diff --git a/cells/a2111o/sky130_fd_sc_lp__a2111o_0.spice b/cells/a2111o/sky130_fd_sc_lp__a2111o_0.spice
index 0b32b96..cdb96a5 100644
--- a/cells/a2111o/sky130_fd_sc_lp__a2111o_0.spice
+++ b/cells/a2111o/sky130_fd_sc_lp__a2111o_0.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__a2111o_0.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__a2111o_0 A1 A2 B1 C1 D1 VGND VNB VPB VPWR X
 M1000 a_468_476# A2 VPWR VPB phighvt w=640000u l=150000u
@@ -26,4 +41,3 @@
 M1011 VGND A2 a_582_47# VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a2111o/sky130_fd_sc_lp__a2111o_1.spice b/cells/a2111o/sky130_fd_sc_lp__a2111o_1.spice
index ce06510..80bd2d5 100644
--- a/cells/a2111o/sky130_fd_sc_lp__a2111o_1.spice
+++ b/cells/a2111o/sky130_fd_sc_lp__a2111o_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__a2111o_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__a2111o_1 A1 A2 B1 C1 D1 VGND VNB VPB VPWR X
 M1000 VGND C1 a_105_239# VNB nshort w=840000u l=150000u
@@ -26,4 +41,3 @@
 M1011 a_105_239# D1 VGND VNB nshort w=840000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a2111o/sky130_fd_sc_lp__a2111o_2.spice b/cells/a2111o/sky130_fd_sc_lp__a2111o_2.spice
index 479f609..deeb8c3 100644
--- a/cells/a2111o/sky130_fd_sc_lp__a2111o_2.spice
+++ b/cells/a2111o/sky130_fd_sc_lp__a2111o_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__a2111o_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__a2111o_2 A1 A2 B1 C1 D1 VGND VNB VPB VPWR X
 M1000 a_86_275# B1 VGND VNB nshort w=840000u l=150000u
@@ -30,4 +45,3 @@
 M1013 a_715_49# A1 a_86_275# VNB nshort w=840000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a2111o/sky130_fd_sc_lp__a2111o_4.spice b/cells/a2111o/sky130_fd_sc_lp__a2111o_4.spice
index 0c37b55..31f7b63 100644
--- a/cells/a2111o/sky130_fd_sc_lp__a2111o_4.spice
+++ b/cells/a2111o/sky130_fd_sc_lp__a2111o_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__a2111o_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__a2111o_4 A1 A2 B1 C1 D1 VGND VNB VPB VPWR X
 M1000 a_63_367# C1 a_318_367# VPB phighvt w=1.26e+06u l=150000u
@@ -58,4 +73,3 @@
 M1027 X a_77_47# VGND VNB nshort w=840000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a2111o/sky130_fd_sc_lp__a2111o_lp.spice b/cells/a2111o/sky130_fd_sc_lp__a2111o_lp.spice
index e0f96f3..59ca16d 100644
--- a/cells/a2111o/sky130_fd_sc_lp__a2111o_lp.spice
+++ b/cells/a2111o/sky130_fd_sc_lp__a2111o_lp.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__a2111o_lp.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__a2111o_lp A1 A2 B1 C1 D1 VGND VNB VPB VPWR X
 M1000 a_134_409# D1 a_27_409# VPB phighvt w=1e+06u l=250000u
@@ -34,4 +49,3 @@
 M1015 X a_27_409# VPWR VPB phighvt w=1e+06u l=250000u
 +  ad=2.85e+11p pd=2.57e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/a2111o/sky130_fd_sc_lp__a2111o_m.spice b/cells/a2111o/sky130_fd_sc_lp__a2111o_m.spice
index 11ec776..7e16da6 100644
--- a/cells/a2111o/sky130_fd_sc_lp__a2111o_m.spice
+++ b/cells/a2111o/sky130_fd_sc_lp__a2111o_m.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__a2111o_m.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__a2111o_m A1 A2 B1 C1 D1 VGND VNB VPB VPWR X
 M1000 a_503_47# A1 a_85_21# VNB nshort w=420000u l=150000u
@@ -26,4 +41,3 @@
 M1011 a_267_369# D1 a_85_21# VPB phighvt w=420000u l=150000u
 +  ad=0p pd=0u as=1.113e+11p ps=1.37e+06u
 .ends
-
diff --git a/cells/a2111oi/sky130_fd_sc_lp__a2111oi_0.spice b/cells/a2111oi/sky130_fd_sc_lp__a2111oi_0.spice
index 3b89ab1..f6a06ea 100644
--- a/cells/a2111oi/sky130_fd_sc_lp__a2111oi_0.spice
+++ b/cells/a2111oi/sky130_fd_sc_lp__a2111oi_0.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__a2111oi_0.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__a2111oi_0 A1 A2 B1 C1 D1 VGND VNB VPB VPWR Y
 M1000 a_432_47# A1 Y VNB nshort w=420000u l=150000u
@@ -22,4 +37,3 @@
 M1009 a_318_483# B1 a_246_483# VPB phighvt w=640000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a2111oi/sky130_fd_sc_lp__a2111oi_1.spice b/cells/a2111oi/sky130_fd_sc_lp__a2111oi_1.spice
index 25434f0..60b3f10 100644
--- a/cells/a2111oi/sky130_fd_sc_lp__a2111oi_1.spice
+++ b/cells/a2111oi/sky130_fd_sc_lp__a2111oi_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__a2111oi_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__a2111oi_1 A1 A2 B1 C1 D1 VGND VNB VPB VPWR Y
 M1000 a_253_367# C1 a_157_367# VPB phighvt w=1.26e+06u l=150000u
@@ -22,4 +37,3 @@
 M1009 Y B1 VGND VNB nshort w=840000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a2111oi/sky130_fd_sc_lp__a2111oi_2.spice b/cells/a2111oi/sky130_fd_sc_lp__a2111oi_2.spice
index 48a059c..12d0cd8 100644
--- a/cells/a2111oi/sky130_fd_sc_lp__a2111oi_2.spice
+++ b/cells/a2111oi/sky130_fd_sc_lp__a2111oi_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__a2111oi_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__a2111oi_2 A1 A2 B1 C1 D1 VGND VNB VPB VPWR Y
 M1000 a_684_47# A1 Y VNB nshort w=840000u l=150000u
@@ -42,4 +57,3 @@
 M1019 VGND A2 a_684_47# VNB nshort w=840000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a2111oi/sky130_fd_sc_lp__a2111oi_4.spice b/cells/a2111oi/sky130_fd_sc_lp__a2111oi_4.spice
index 7e4d913..be1f6b6 100644
--- a/cells/a2111oi/sky130_fd_sc_lp__a2111oi_4.spice
+++ b/cells/a2111oi/sky130_fd_sc_lp__a2111oi_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__a2111oi_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__a2111oi_4 A1 A2 B1 C1 D1 VGND VNB VPB VPWR Y
 M1000 Y D1 a_27_367# VPB phighvt w=1.26e+06u l=150000u
@@ -82,4 +97,3 @@
 M1039 Y D1 VGND VNB nshort w=840000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a2111oi/sky130_fd_sc_lp__a2111oi_lp.spice b/cells/a2111oi/sky130_fd_sc_lp__a2111oi_lp.spice
index c1b3312..fd511fc 100644
--- a/cells/a2111oi/sky130_fd_sc_lp__a2111oi_lp.spice
+++ b/cells/a2111oi/sky130_fd_sc_lp__a2111oi_lp.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__a2111oi_lp.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__a2111oi_lp A1 A2 B1 C1 D1 VGND VNB VPB VPWR Y
 M1000 a_289_57# B1 VGND VNB nshort w=420000u l=150000u
@@ -28,4 +43,3 @@
 M1012 VPWR A2 a_131_409# VPB phighvt w=1e+06u l=250000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a2111oi/sky130_fd_sc_lp__a2111oi_m.spice b/cells/a2111oi/sky130_fd_sc_lp__a2111oi_m.spice
index 697510a..efcba81 100644
--- a/cells/a2111oi/sky130_fd_sc_lp__a2111oi_m.spice
+++ b/cells/a2111oi/sky130_fd_sc_lp__a2111oi_m.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__a2111oi_m.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__a2111oi_m A1 A2 B1 C1 D1 VGND VNB VPB VPWR Y
 M1000 a_155_533# D1 Y VPB phighvt w=420000u l=150000u
@@ -22,4 +37,3 @@
 M1009 Y D1 VGND VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a211o/sky130_fd_sc_lp__a211o_0.spice b/cells/a211o/sky130_fd_sc_lp__a211o_0.spice
index d943192..ec870bd 100644
--- a/cells/a211o/sky130_fd_sc_lp__a211o_0.spice
+++ b/cells/a211o/sky130_fd_sc_lp__a211o_0.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__a211o_0.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__a211o_0 A1 A2 B1 C1 VGND VNB VPB VPWR X
 M1000 a_80_172# C1 VGND VNB nshort w=420000u l=150000u
@@ -22,4 +37,3 @@
 M1009 VPWR a_80_172# X VPB phighvt w=640000u l=150000u
 +  ad=0p pd=0u as=1.696e+11p ps=1.81e+06u
 .ends
-
diff --git a/cells/a211o/sky130_fd_sc_lp__a211o_1.spice b/cells/a211o/sky130_fd_sc_lp__a211o_1.spice
index a117c27..9ffa531 100644
--- a/cells/a211o/sky130_fd_sc_lp__a211o_1.spice
+++ b/cells/a211o/sky130_fd_sc_lp__a211o_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__a211o_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__a211o_1 A1 A2 B1 C1 VGND VNB VPB VPWR X
 M1000 a_80_237# C1 a_504_367# VPB phighvt w=1.26e+06u l=150000u
@@ -22,4 +37,3 @@
 M1009 VGND a_80_237# X VNB nshort w=840000u l=150000u
 +  ad=0p pd=0u as=2.226e+11p ps=2.21e+06u
 .ends
-
diff --git a/cells/a211o/sky130_fd_sc_lp__a211o_2.spice b/cells/a211o/sky130_fd_sc_lp__a211o_2.spice
index d7dc57d..0030b8e 100644
--- a/cells/a211o/sky130_fd_sc_lp__a211o_2.spice
+++ b/cells/a211o/sky130_fd_sc_lp__a211o_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__a211o_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__a211o_2 A1 A2 B1 C1 VGND VNB VPB VPWR X
 M1000 a_303_367# A1 VPWR VPB phighvt w=1.26e+06u l=150000u
@@ -26,4 +41,3 @@
 M1011 X a_80_21# VPWR VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a211o/sky130_fd_sc_lp__a211o_4.spice b/cells/a211o/sky130_fd_sc_lp__a211o_4.spice
index b8fc929..991aeb0 100644
--- a/cells/a211o/sky130_fd_sc_lp__a211o_4.spice
+++ b/cells/a211o/sky130_fd_sc_lp__a211o_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__a211o_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__a211o_4 A1 A2 B1 C1 VGND VNB VPB VPWR X
 M1000 a_610_367# C1 a_103_263# VPB phighvt w=1.26e+06u l=150000u
@@ -50,4 +65,3 @@
 M1023 X a_103_263# VGND VNB nshort w=840000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a211o/sky130_fd_sc_lp__a211o_lp.spice b/cells/a211o/sky130_fd_sc_lp__a211o_lp.spice
index 14d3c32..0c6726f 100644
--- a/cells/a211o/sky130_fd_sc_lp__a211o_lp.spice
+++ b/cells/a211o/sky130_fd_sc_lp__a211o_lp.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__a211o_lp.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__a211o_lp A1 A2 B1 C1 VGND VNB VPB VPWR X
 M1000 VPWR A1 a_29_409# VPB phighvt w=1e+06u l=250000u
@@ -28,4 +43,3 @@
 M1012 VGND A2 a_130_57# VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a211o/sky130_fd_sc_lp__a211o_m.spice b/cells/a211o/sky130_fd_sc_lp__a211o_m.spice
index 0dffb12..7bcdd83 100644
--- a/cells/a211o/sky130_fd_sc_lp__a211o_m.spice
+++ b/cells/a211o/sky130_fd_sc_lp__a211o_m.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__a211o_m.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__a211o_m A1 A2 B1 C1 VGND VNB VPB VPWR X
 M1000 VGND B1 a_82_483# VNB nshort w=420000u l=150000u
@@ -22,4 +37,3 @@
 M1009 a_82_483# A1 a_322_145# VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a211oi/sky130_fd_sc_lp__a211oi_0.spice b/cells/a211oi/sky130_fd_sc_lp__a211oi_0.spice
index 35c3e54..96ede55 100644
--- a/cells/a211oi/sky130_fd_sc_lp__a211oi_0.spice
+++ b/cells/a211oi/sky130_fd_sc_lp__a211oi_0.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__a211oi_0.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__a211oi_0 A1 A2 B1 C1 VGND VNB VPB VPWR Y
 M1000 a_148_47# A2 VGND VNB nshort w=420000u l=150000u
@@ -18,4 +33,3 @@
 M1007 Y A1 a_148_47# VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a211oi/sky130_fd_sc_lp__a211oi_1.spice b/cells/a211oi/sky130_fd_sc_lp__a211oi_1.spice
index d7530bb..cdb1783 100644
--- a/cells/a211oi/sky130_fd_sc_lp__a211oi_1.spice
+++ b/cells/a211oi/sky130_fd_sc_lp__a211oi_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__a211oi_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__a211oi_1 A1 A2 B1 C1 VGND VNB VPB VPWR Y
 M1000 a_27_367# A1 VPWR VPB phighvt w=1.26e+06u l=150000u
@@ -18,4 +33,3 @@
 M1007 Y A1 a_110_49# VNB nshort w=840000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a211oi/sky130_fd_sc_lp__a211oi_2.spice b/cells/a211oi/sky130_fd_sc_lp__a211oi_2.spice
index eb08c14..fb524e0 100644
--- a/cells/a211oi/sky130_fd_sc_lp__a211oi_2.spice
+++ b/cells/a211oi/sky130_fd_sc_lp__a211oi_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__a211oi_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__a211oi_2 A1 A2 B1 C1 VGND VNB VPB VPWR Y
 M1000 VPWR A2 a_296_367# VPB phighvt w=1.26e+06u l=150000u
@@ -34,4 +49,3 @@
 M1015 Y A1 a_489_65# VNB nshort w=840000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a211oi/sky130_fd_sc_lp__a211oi_4.spice b/cells/a211oi/sky130_fd_sc_lp__a211oi_4.spice
index 2b89b38..b1829c9 100644
--- a/cells/a211oi/sky130_fd_sc_lp__a211oi_4.spice
+++ b/cells/a211oi/sky130_fd_sc_lp__a211oi_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__a211oi_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__a211oi_4 A1 A2 B1 C1 VGND VNB VPB VPWR Y
 M1000 VGND C1 Y VNB nshort w=840000u l=150000u
@@ -66,4 +81,3 @@
 M1031 Y B1 VGND VNB nshort w=840000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a211oi/sky130_fd_sc_lp__a211oi_lp.spice b/cells/a211oi/sky130_fd_sc_lp__a211oi_lp.spice
index cbc1467..770ecec 100644
--- a/cells/a211oi/sky130_fd_sc_lp__a211oi_lp.spice
+++ b/cells/a211oi/sky130_fd_sc_lp__a211oi_lp.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__a211oi_lp.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__a211oi_lp A1 A2 B1 C1 VGND VNB VPB VPWR Y
 M1000 a_295_57# B1 VGND VNB nshort w=420000u l=150000u
@@ -22,4 +37,3 @@
 M1009 VGND A2 a_453_57# VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a211oi/sky130_fd_sc_lp__a211oi_m.spice b/cells/a211oi/sky130_fd_sc_lp__a211oi_m.spice
index ce2d0eb..0b90fd2 100644
--- a/cells/a211oi/sky130_fd_sc_lp__a211oi_m.spice
+++ b/cells/a211oi/sky130_fd_sc_lp__a211oi_m.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__a211oi_m.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__a211oi_m A1 A2 B1 C1 VGND VNB VPB VPWR Y
 M1000 Y C1 a_314_369# VPB phighvt w=420000u l=150000u
@@ -18,4 +33,3 @@
 M1007 Y C1 VGND VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a21bo/sky130_fd_sc_lp__a21bo_0.spice b/cells/a21bo/sky130_fd_sc_lp__a21bo_0.spice
index c41c794..54e0017 100644
--- a/cells/a21bo/sky130_fd_sc_lp__a21bo_0.spice
+++ b/cells/a21bo/sky130_fd_sc_lp__a21bo_0.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__a21bo_0.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__a21bo_0 A1 A2 B1_N VGND VNB VPB VPWR X
 M1000 VGND A2 a_533_52# VNB nshort w=420000u l=150000u
@@ -22,4 +37,3 @@
 M1009 a_533_52# A1 a_72_212# VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a21bo/sky130_fd_sc_lp__a21bo_1.spice b/cells/a21bo/sky130_fd_sc_lp__a21bo_1.spice
index 39fddbb..e6fbf78 100644
--- a/cells/a21bo/sky130_fd_sc_lp__a21bo_1.spice
+++ b/cells/a21bo/sky130_fd_sc_lp__a21bo_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__a21bo_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__a21bo_1 A1 A2 B1_N VGND VNB VPB VPWR X
 M1000 a_436_367# A2 VPWR VPB phighvt w=1.26e+06u l=150000u
@@ -22,4 +37,3 @@
 M1009 VPWR a_80_43# X VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=3.339e+11p ps=3.05e+06u
 .ends
-
diff --git a/cells/a21bo/sky130_fd_sc_lp__a21bo_2.spice b/cells/a21bo/sky130_fd_sc_lp__a21bo_2.spice
index 8b5dbe9..54594d5 100644
--- a/cells/a21bo/sky130_fd_sc_lp__a21bo_2.spice
+++ b/cells/a21bo/sky130_fd_sc_lp__a21bo_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__a21bo_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__a21bo_2 A1 A2 B1_N VGND VNB VPB VPWR X
 M1000 VGND a_22_259# X VNB nshort w=840000u l=150000u
@@ -26,4 +41,3 @@
 M1011 a_594_47# A1 a_22_259# VNB nshort w=840000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a21bo/sky130_fd_sc_lp__a21bo_4.spice b/cells/a21bo/sky130_fd_sc_lp__a21bo_4.spice
index 718a6f4..3adc290 100644
--- a/cells/a21bo/sky130_fd_sc_lp__a21bo_4.spice
+++ b/cells/a21bo/sky130_fd_sc_lp__a21bo_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__a21bo_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__a21bo_4 A1 A2 B1_N VGND VNB VPB VPWR X
 M1000 VPWR a_188_315# X VPB phighvt w=1.26e+06u l=150000u
@@ -46,4 +61,3 @@
 M1021 VPWR B1_N a_42_47# VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=3.339e+11p ps=3.05e+06u
 .ends
-
diff --git a/cells/a21bo/sky130_fd_sc_lp__a21bo_lp.spice b/cells/a21bo/sky130_fd_sc_lp__a21bo_lp.spice
index f2a18f28..77a77cf 100644
--- a/cells/a21bo/sky130_fd_sc_lp__a21bo_lp.spice
+++ b/cells/a21bo/sky130_fd_sc_lp__a21bo_lp.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__a21bo_lp.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__a21bo_lp A1 A2 B1_N VGND VNB VPB VPWR X
 M1000 a_436_55# a_308_364# a_84_29# VNB nshort w=420000u l=150000u
@@ -28,4 +43,3 @@
 M1012 VGND a_308_364# a_436_55# VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a21bo/sky130_fd_sc_lp__a21bo_m.spice b/cells/a21bo/sky130_fd_sc_lp__a21bo_m.spice
index 7e5d5bb..8e7973f 100644
--- a/cells/a21bo/sky130_fd_sc_lp__a21bo_m.spice
+++ b/cells/a21bo/sky130_fd_sc_lp__a21bo_m.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__a21bo_m.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__a21bo_m A1 A2 B1_N VGND VNB VPB VPWR X
 M1000 a_80_72# a_196_98# VGND VNB nshort w=420000u l=150000u
@@ -22,4 +37,3 @@
 M1009 VPWR A1 a_419_439# VPB phighvt w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a21boi/sky130_fd_sc_lp__a21boi_0.spice b/cells/a21boi/sky130_fd_sc_lp__a21boi_0.spice
index a885767..ffdbf2e 100644
--- a/cells/a21boi/sky130_fd_sc_lp__a21boi_0.spice
+++ b/cells/a21boi/sky130_fd_sc_lp__a21boi_0.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__a21boi_0.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__a21boi_0 A1 A2 B1_N VGND VNB VPB VPWR Y
 M1000 a_350_47# A1 Y VNB nshort w=420000u l=150000u
@@ -18,4 +33,3 @@
 M1007 VGND A2 a_350_47# VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a21boi/sky130_fd_sc_lp__a21boi_1.spice b/cells/a21boi/sky130_fd_sc_lp__a21boi_1.spice
index 6ae4700..bf4ed98 100644
--- a/cells/a21boi/sky130_fd_sc_lp__a21boi_1.spice
+++ b/cells/a21boi/sky130_fd_sc_lp__a21boi_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__a21boi_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__a21boi_1 A1 A2 B1_N VGND VNB VPB VPWR Y
 M1000 a_302_367# a_27_508# Y VPB phighvt w=1.26e+06u l=150000u
@@ -18,4 +33,3 @@
 M1007 VGND A2 a_380_47# VNB nshort w=840000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a21boi/sky130_fd_sc_lp__a21boi_2.spice b/cells/a21boi/sky130_fd_sc_lp__a21boi_2.spice
index 27c3884..105c01b 100644
--- a/cells/a21boi/sky130_fd_sc_lp__a21boi_2.spice
+++ b/cells/a21boi/sky130_fd_sc_lp__a21boi_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__a21boi_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__a21boi_2 A1 A2 B1_N VGND VNB VPB VPWR Y
 M1000 VPWR A1 a_231_367# VPB phighvt w=1.26e+06u l=150000u
@@ -30,4 +45,3 @@
 M1013 VGND A2 a_502_65# VNB nshort w=840000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a21boi/sky130_fd_sc_lp__a21boi_4.spice b/cells/a21boi/sky130_fd_sc_lp__a21boi_4.spice
index a765915..cda1b35 100644
--- a/cells/a21boi/sky130_fd_sc_lp__a21boi_4.spice
+++ b/cells/a21boi/sky130_fd_sc_lp__a21boi_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__a21boi_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__a21boi_4 A1 A2 B1_N VGND VNB VPB VPWR Y
 M1000 VGND a_33_367# Y VNB nshort w=840000u l=150000u
@@ -54,4 +69,3 @@
 M1025 a_223_367# A2 VPWR VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a21boi/sky130_fd_sc_lp__a21boi_lp.spice b/cells/a21boi/sky130_fd_sc_lp__a21boi_lp.spice
index ac796f6..aa9b7e7 100644
--- a/cells/a21boi/sky130_fd_sc_lp__a21boi_lp.spice
+++ b/cells/a21boi/sky130_fd_sc_lp__a21boi_lp.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__a21boi_lp.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__a21boi_lp A1 A2 B1_N VGND VNB VPB VPWR Y
 M1000 Y a_298_318# a_29_409# VPB phighvt w=1e+06u l=250000u
@@ -22,4 +37,3 @@
 M1009 a_336_47# a_298_318# Y VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a21boi/sky130_fd_sc_lp__a21boi_m.spice b/cells/a21boi/sky130_fd_sc_lp__a21boi_m.spice
index 2b3f2f1..d7bae9f 100644
--- a/cells/a21boi/sky130_fd_sc_lp__a21boi_m.spice
+++ b/cells/a21boi/sky130_fd_sc_lp__a21boi_m.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__a21boi_m.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__a21boi_m A1 A2 B1_N VGND VNB VPB VPWR Y
 M1000 VPWR A1 a_306_395# VPB phighvt w=420000u l=150000u
@@ -18,4 +33,3 @@
 M1007 a_310_47# A1 Y VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a21o/sky130_fd_sc_lp__a21o_0.spice b/cells/a21o/sky130_fd_sc_lp__a21o_0.spice
index 04c3c78..d905e6d 100644
--- a/cells/a21o/sky130_fd_sc_lp__a21o_0.spice
+++ b/cells/a21o/sky130_fd_sc_lp__a21o_0.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__a21o_0.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__a21o_0 A1 A2 B1 VGND VNB VPB VPWR X
 M1000 a_319_473# B1 a_80_275# VPB phighvt w=640000u l=150000u
@@ -18,4 +33,3 @@
 M1007 VGND a_80_275# X VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=1.113e+11p ps=1.37e+06u
 .ends
-
diff --git a/cells/a21o/sky130_fd_sc_lp__a21o_1.spice b/cells/a21o/sky130_fd_sc_lp__a21o_1.spice
index 5e47611..3f4fff4 100644
--- a/cells/a21o/sky130_fd_sc_lp__a21o_1.spice
+++ b/cells/a21o/sky130_fd_sc_lp__a21o_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__a21o_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__a21o_1 A1 A2 B1 VGND VNB VPB VPWR X
 M1000 VGND a_80_237# X VNB nshort w=840000u l=150000u
@@ -18,4 +33,3 @@
 M1007 VPWR a_80_237# X VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=3.339e+11p ps=3.05e+06u
 .ends
-
diff --git a/cells/a21o/sky130_fd_sc_lp__a21o_2.spice b/cells/a21o/sky130_fd_sc_lp__a21o_2.spice
index 57c227d..a3ffbe9 100644
--- a/cells/a21o/sky130_fd_sc_lp__a21o_2.spice
+++ b/cells/a21o/sky130_fd_sc_lp__a21o_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__a21o_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__a21o_2 A1 A2 B1 VGND VNB VPB VPWR X
 M1000 a_392_367# B1 a_86_269# VPB phighvt w=1.26e+06u l=150000u
@@ -22,4 +37,3 @@
 M1009 VGND a_86_269# X VNB nshort w=840000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a21o/sky130_fd_sc_lp__a21o_4.spice b/cells/a21o/sky130_fd_sc_lp__a21o_4.spice
index e863055..1410e96 100644
--- a/cells/a21o/sky130_fd_sc_lp__a21o_4.spice
+++ b/cells/a21o/sky130_fd_sc_lp__a21o_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__a21o_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__a21o_4 A1 A2 B1 VGND VNB VPB VPWR X
 M1000 a_792_49# A1 a_134_269# VNB nshort w=840000u l=150000u
@@ -42,4 +57,3 @@
 M1019 X a_134_269# VPWR VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a21o/sky130_fd_sc_lp__a21o_lp.spice b/cells/a21o/sky130_fd_sc_lp__a21o_lp.spice
index 06a10f0..fb196b9 100644
--- a/cells/a21o/sky130_fd_sc_lp__a21o_lp.spice
+++ b/cells/a21o/sky130_fd_sc_lp__a21o_lp.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__a21o_lp.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__a21o_lp A1 A2 B1 VGND VNB VPB VPWR X
 M1000 X a_218_57# VPWR VPB phighvt w=1e+06u l=250000u
@@ -22,4 +37,3 @@
 M1009 VGND B1 a_332_57# VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a21o/sky130_fd_sc_lp__a21o_m.spice b/cells/a21o/sky130_fd_sc_lp__a21o_m.spice
index ca44e6a..fb6ae77 100644
--- a/cells/a21o/sky130_fd_sc_lp__a21o_m.spice
+++ b/cells/a21o/sky130_fd_sc_lp__a21o_m.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__a21o_m.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__a21o_m A1 A2 B1 VGND VNB VPB VPWR X
 M1000 a_324_508# A2 VPWR VPB phighvt w=420000u l=150000u
@@ -18,4 +33,3 @@
 M1007 VGND a_80_153# X VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=1.113e+11p ps=1.37e+06u
 .ends
-
diff --git a/cells/a21oi/sky130_fd_sc_lp__a21oi_0.spice b/cells/a21oi/sky130_fd_sc_lp__a21oi_0.spice
index da47b61..3022827 100644
--- a/cells/a21oi/sky130_fd_sc_lp__a21oi_0.spice
+++ b/cells/a21oi/sky130_fd_sc_lp__a21oi_0.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__a21oi_0.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__a21oi_0 A1 A2 B1 VGND VNB VPB VPWR Y
 M1000 a_136_47# A2 VGND VNB nshort w=420000u l=150000u
@@ -14,4 +29,3 @@
 M1005 VPWR A2 a_45_473# VPB phighvt w=640000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a21oi/sky130_fd_sc_lp__a21oi_1.spice b/cells/a21oi/sky130_fd_sc_lp__a21oi_1.spice
index 499db9d..0729003 100644
--- a/cells/a21oi/sky130_fd_sc_lp__a21oi_1.spice
+++ b/cells/a21oi/sky130_fd_sc_lp__a21oi_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__a21oi_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__a21oi_1 A1 A2 B1 VGND VNB VPB VPWR Y
 M1000 Y A1 a_110_69# VNB nshort w=840000u l=150000u
@@ -14,4 +29,3 @@
 M1005 VPWR A2 a_27_367# VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a21oi/sky130_fd_sc_lp__a21oi_2.spice b/cells/a21oi/sky130_fd_sc_lp__a21oi_2.spice
index 594e71e..4fb106a 100644
--- a/cells/a21oi/sky130_fd_sc_lp__a21oi_2.spice
+++ b/cells/a21oi/sky130_fd_sc_lp__a21oi_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__a21oi_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__a21oi_2 A1 A2 B1 VGND VNB VPB VPWR Y
 M1000 VPWR A1 a_27_367# VPB phighvt w=1.26e+06u l=150000u
@@ -26,4 +41,3 @@
 M1011 a_110_47# A1 Y VNB nshort w=840000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a21oi/sky130_fd_sc_lp__a21oi_4.spice b/cells/a21oi/sky130_fd_sc_lp__a21oi_4.spice
index 73475c6..507a40a 100644
--- a/cells/a21oi/sky130_fd_sc_lp__a21oi_4.spice
+++ b/cells/a21oi/sky130_fd_sc_lp__a21oi_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__a21oi_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__a21oi_4 A1 A2 B1 VGND VNB VPB VPWR Y
 M1000 a_111_47# A2 VGND VNB nshort w=840000u l=150000u
@@ -50,4 +65,3 @@
 M1023 Y A1 a_111_47# VNB nshort w=840000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a21oi/sky130_fd_sc_lp__a21oi_lp.spice b/cells/a21oi/sky130_fd_sc_lp__a21oi_lp.spice
index 8623318..07337d7 100644
--- a/cells/a21oi/sky130_fd_sc_lp__a21oi_lp.spice
+++ b/cells/a21oi/sky130_fd_sc_lp__a21oi_lp.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__a21oi_lp.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__a21oi_lp A1 A2 B1 VGND VNB VPB VPWR Y
 M1000 Y B1 a_31_409# VPB phighvt w=1e+06u l=250000u
@@ -16,4 +31,3 @@
 M1006 Y A1 a_132_47# VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a21oi/sky130_fd_sc_lp__a21oi_m.spice b/cells/a21oi/sky130_fd_sc_lp__a21oi_m.spice
index 56d9f17..c69d102 100644
--- a/cells/a21oi/sky130_fd_sc_lp__a21oi_m.spice
+++ b/cells/a21oi/sky130_fd_sc_lp__a21oi_m.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__a21oi_m.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__a21oi_m A1 A2 B1 VGND VNB VPB VPWR Y
 M1000 VGND B1 Y VNB nshort w=420000u l=150000u
@@ -14,4 +29,3 @@
 M1005 a_118_47# A2 VGND VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a221o/sky130_fd_sc_lp__a221o_0.spice b/cells/a221o/sky130_fd_sc_lp__a221o_0.spice
index 497ba67..01921a2 100644
--- a/cells/a221o/sky130_fd_sc_lp__a221o_0.spice
+++ b/cells/a221o/sky130_fd_sc_lp__a221o_0.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__a221o_0.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__a221o_0 A1 A2 B1 B2 C1 VGND VNB VPB VPWR X
 M1000 VPWR a_72_312# X VPB phighvt w=640000u l=150000u
@@ -26,4 +41,3 @@
 M1011 a_72_312# C1 a_409_429# VPB phighvt w=640000u l=150000u
 +  ad=1.696e+11p pd=1.81e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/a221o/sky130_fd_sc_lp__a221o_1.spice b/cells/a221o/sky130_fd_sc_lp__a221o_1.spice
index 48833dc..c72ebaf 100644
--- a/cells/a221o/sky130_fd_sc_lp__a221o_1.spice
+++ b/cells/a221o/sky130_fd_sc_lp__a221o_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__a221o_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__a221o_1 A1 A2 B1 B2 C1 VGND VNB VPB VPWR X
 M1000 a_80_21# C1 a_458_367# VPB phighvt w=1.26e+06u l=150000u
@@ -26,4 +41,3 @@
 M1011 VPWR a_80_21# X VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=3.339e+11p ps=3.05e+06u
 .ends
-
diff --git a/cells/a221o/sky130_fd_sc_lp__a221o_2.spice b/cells/a221o/sky130_fd_sc_lp__a221o_2.spice
index 37ee84b..9b6ff29 100644
--- a/cells/a221o/sky130_fd_sc_lp__a221o_2.spice
+++ b/cells/a221o/sky130_fd_sc_lp__a221o_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__a221o_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__a221o_2 A1 A2 B1 B2 C1 VGND VNB VPB VPWR X
 M1000 a_334_367# A2 VPWR VPB phighvt w=1.26e+06u l=150000u
@@ -30,4 +45,3 @@
 M1013 a_86_27# C1 VGND VNB nshort w=840000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a221o/sky130_fd_sc_lp__a221o_4.spice b/cells/a221o/sky130_fd_sc_lp__a221o_4.spice
index 6388ef4..2cc76f5 100644
--- a/cells/a221o/sky130_fd_sc_lp__a221o_4.spice
+++ b/cells/a221o/sky130_fd_sc_lp__a221o_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__a221o_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__a221o_4 A1 A2 B1 B2 C1 VGND VNB VPB VPWR X
 M1000 a_457_47# A2 VGND VNB nshort w=840000u l=150000u
@@ -58,4 +73,3 @@
 M1027 a_822_367# B2 a_457_367# VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a221o/sky130_fd_sc_lp__a221o_lp.spice b/cells/a221o/sky130_fd_sc_lp__a221o_lp.spice
index bb05205..9febed5 100644
--- a/cells/a221o/sky130_fd_sc_lp__a221o_lp.spice
+++ b/cells/a221o/sky130_fd_sc_lp__a221o_lp.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__a221o_lp.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__a221o_lp A1 A2 B1 B2 C1 VGND VNB VPB VPWR X
 M1000 a_582_66# B1 a_96_183# VNB nshort w=420000u l=150000u
@@ -30,4 +45,3 @@
 M1013 VGND a_96_183# a_162_66# VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a221o/sky130_fd_sc_lp__a221o_m.spice b/cells/a221o/sky130_fd_sc_lp__a221o_m.spice
index 6a3efcc..f73d4a2 100644
--- a/cells/a221o/sky130_fd_sc_lp__a221o_m.spice
+++ b/cells/a221o/sky130_fd_sc_lp__a221o_m.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__a221o_m.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__a221o_m A1 A2 B1 B2 C1 VGND VNB VPB VPWR X
 M1000 VPWR A1 a_233_535# VPB phighvt w=420000u l=150000u
@@ -26,4 +41,3 @@
 M1011 a_33_153# C1 VGND VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a221oi/sky130_fd_sc_lp__a221oi_0.spice b/cells/a221oi/sky130_fd_sc_lp__a221oi_0.spice
index 9c1487a..c274ebb 100644
--- a/cells/a221oi/sky130_fd_sc_lp__a221oi_0.spice
+++ b/cells/a221oi/sky130_fd_sc_lp__a221oi_0.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__a221oi_0.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__a221oi_0 A1 A2 B1 B2 C1 VGND VNB VPB VPWR Y
 M1000 a_228_47# B2 VGND VNB nshort w=420000u l=150000u
@@ -22,4 +37,3 @@
 M1009 VGND C1 Y VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a221oi/sky130_fd_sc_lp__a221oi_1.spice b/cells/a221oi/sky130_fd_sc_lp__a221oi_1.spice
index 481e0f8..73532c2 100644
--- a/cells/a221oi/sky130_fd_sc_lp__a221oi_1.spice
+++ b/cells/a221oi/sky130_fd_sc_lp__a221oi_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__a221oi_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__a221oi_1 A1 A2 B1 B2 C1 VGND VNB VPB VPWR Y
 M1000 VPWR A1 a_217_367# VPB phighvt w=1.26e+06u l=150000u
@@ -22,4 +37,3 @@
 M1009 a_110_367# C1 Y VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=3.339e+11p ps=3.05e+06u
 .ends
-
diff --git a/cells/a221oi/sky130_fd_sc_lp__a221oi_2.spice b/cells/a221oi/sky130_fd_sc_lp__a221oi_2.spice
index 5f7ebfa..1ac65d1 100644
--- a/cells/a221oi/sky130_fd_sc_lp__a221oi_2.spice
+++ b/cells/a221oi/sky130_fd_sc_lp__a221oi_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__a221oi_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__a221oi_2 A1 A2 B1 B2 C1 VGND VNB VPB VPWR Y
 M1000 a_27_367# B1 a_303_367# VPB phighvt w=1.26e+06u l=150000u
@@ -42,4 +57,3 @@
 M1019 a_303_367# A1 VPWR VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a221oi/sky130_fd_sc_lp__a221oi_4.spice b/cells/a221oi/sky130_fd_sc_lp__a221oi_4.spice
index fbbfd75..fa52e1c 100644
--- a/cells/a221oi/sky130_fd_sc_lp__a221oi_4.spice
+++ b/cells/a221oi/sky130_fd_sc_lp__a221oi_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__a221oi_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__a221oi_4 A1 A2 B1 B2 C1 VGND VNB VPB VPWR Y
 M1000 a_1334_47# A1 Y VNB nshort w=840000u l=150000u
@@ -82,4 +97,3 @@
 M1039 a_1334_47# A1 Y VNB nshort w=840000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a221oi/sky130_fd_sc_lp__a221oi_lp.spice b/cells/a221oi/sky130_fd_sc_lp__a221oi_lp.spice
index 10e4b3e..a53e92c 100644
--- a/cells/a221oi/sky130_fd_sc_lp__a221oi_lp.spice
+++ b/cells/a221oi/sky130_fd_sc_lp__a221oi_lp.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__a221oi_lp.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__a221oi_lp A1 A2 B1 B2 C1 VGND VNB VPB VPWR Y
 M1000 VGND A2 a_341_48# VNB nshort w=420000u l=150000u
@@ -24,4 +39,3 @@
 M1010 a_163_412# B2 a_56_412# VPB phighvt w=1e+06u l=250000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a221oi/sky130_fd_sc_lp__a221oi_m.spice b/cells/a221oi/sky130_fd_sc_lp__a221oi_m.spice
index cef545b..9b1c626 100644
--- a/cells/a221oi/sky130_fd_sc_lp__a221oi_m.spice
+++ b/cells/a221oi/sky130_fd_sc_lp__a221oi_m.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__a221oi_m.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__a221oi_m A1 A2 B1 B2 C1 VGND VNB VPB VPWR Y
 M1000 VPWR A1 a_296_535# VPB phighvt w=420000u l=150000u
@@ -22,4 +37,3 @@
 M1009 VGND C1 Y VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a22o/sky130_fd_sc_lp__a22o_0.spice b/cells/a22o/sky130_fd_sc_lp__a22o_0.spice
index 211d8aa..3bff74c 100644
--- a/cells/a22o/sky130_fd_sc_lp__a22o_0.spice
+++ b/cells/a22o/sky130_fd_sc_lp__a22o_0.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__a22o_0.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__a22o_0 A1 A2 B1 B2 VGND VNB VPB VPWR X
 M1000 a_85_155# B1 a_257_491# VPB phighvt w=640000u l=150000u
@@ -22,4 +37,3 @@
 M1009 a_85_155# A1 a_235_47# VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a22o/sky130_fd_sc_lp__a22o_1.spice b/cells/a22o/sky130_fd_sc_lp__a22o_1.spice
index e742d25..080c30f 100644
--- a/cells/a22o/sky130_fd_sc_lp__a22o_1.spice
+++ b/cells/a22o/sky130_fd_sc_lp__a22o_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__a22o_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__a22o_1 A1 A2 B1 B2 VGND VNB VPB VPWR X
 M1000 a_217_367# A2 VPWR VPB phighvt w=1.26e+06u l=150000u
@@ -22,4 +37,3 @@
 M1009 VPWR a_80_246# X VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=3.339e+11p ps=3.05e+06u
 .ends
-
diff --git a/cells/a22o/sky130_fd_sc_lp__a22o_2.spice b/cells/a22o/sky130_fd_sc_lp__a22o_2.spice
index 1cf9096..da314f7 100644
--- a/cells/a22o/sky130_fd_sc_lp__a22o_2.spice
+++ b/cells/a22o/sky130_fd_sc_lp__a22o_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__a22o_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__a22o_2 A1 A2 B1 B2 VGND VNB VPB VPWR X
 M1000 a_94_249# A1 a_340_49# VNB nshort w=840000u l=150000u
@@ -26,4 +41,3 @@
 M1011 VPWR a_94_249# X VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a22o/sky130_fd_sc_lp__a22o_4.spice b/cells/a22o/sky130_fd_sc_lp__a22o_4.spice
index 8aaa5d3..3c1aca9 100644
--- a/cells/a22o/sky130_fd_sc_lp__a22o_4.spice
+++ b/cells/a22o/sky130_fd_sc_lp__a22o_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__a22o_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__a22o_4 A1 A2 B1 B2 VGND VNB VPB VPWR X
 M1000 X a_103_263# VPWR VPB phighvt w=1.26e+06u l=150000u
@@ -50,4 +65,3 @@
 M1023 a_103_263# B2 a_549_367# VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a22o/sky130_fd_sc_lp__a22o_lp.spice b/cells/a22o/sky130_fd_sc_lp__a22o_lp.spice
index d6ab0b3..8da6ac4 100644
--- a/cells/a22o/sky130_fd_sc_lp__a22o_lp.spice
+++ b/cells/a22o/sky130_fd_sc_lp__a22o_lp.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__a22o_lp.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__a22o_lp A1 A2 B1 B2 VGND VNB VPB VPWR X
 M1000 a_137_409# B1 a_243_409# VPB phighvt w=1e+06u l=250000u
@@ -24,4 +39,3 @@
 M1010 X a_243_409# VPWR VPB phighvt w=1e+06u l=250000u
 +  ad=2.85e+11p pd=2.57e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/a22o/sky130_fd_sc_lp__a22o_m.spice b/cells/a22o/sky130_fd_sc_lp__a22o_m.spice
index 80a06fe..d709ffb 100644
--- a/cells/a22o/sky130_fd_sc_lp__a22o_m.spice
+++ b/cells/a22o/sky130_fd_sc_lp__a22o_m.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__a22o_m.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__a22o_m A1 A2 B1 B2 VGND VNB VPB VPWR X
 M1000 a_85_317# B1 a_265_501# VPB phighvt w=420000u l=150000u
@@ -22,4 +37,3 @@
 M1009 a_445_125# B1 a_85_317# VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a22oi/sky130_fd_sc_lp__a22oi_0.spice b/cells/a22oi/sky130_fd_sc_lp__a22oi_0.spice
index b31cb9c..2baf390 100644
--- a/cells/a22oi/sky130_fd_sc_lp__a22oi_0.spice
+++ b/cells/a22oi/sky130_fd_sc_lp__a22oi_0.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__a22oi_0.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__a22oi_0 A1 A2 B1 B2 VGND VNB VPB VPWR Y
 M1000 a_45_405# A2 VPWR VPB phighvt w=640000u l=150000u
@@ -18,4 +33,3 @@
 M1007 a_307_47# A1 Y VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a22oi/sky130_fd_sc_lp__a22oi_1.spice b/cells/a22oi/sky130_fd_sc_lp__a22oi_1.spice
index dbc55ee..18c4419 100644
--- a/cells/a22oi/sky130_fd_sc_lp__a22oi_1.spice
+++ b/cells/a22oi/sky130_fd_sc_lp__a22oi_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__a22oi_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__a22oi_1 A1 A2 B1 B2 VGND VNB VPB VPWR Y
 M1000 a_65_367# A2 VPWR VPB phighvt w=1.26e+06u l=150000u
@@ -18,4 +33,3 @@
 M1007 Y B1 a_148_69# VNB nshort w=840000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a22oi/sky130_fd_sc_lp__a22oi_2.spice b/cells/a22oi/sky130_fd_sc_lp__a22oi_2.spice
index fd6fe19..2987a18 100644
--- a/cells/a22oi/sky130_fd_sc_lp__a22oi_2.spice
+++ b/cells/a22oi/sky130_fd_sc_lp__a22oi_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__a22oi_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__a22oi_2 A1 A2 B1 B2 VGND VNB VPB VPWR Y
 M1000 a_49_367# B1 Y VPB phighvt w=1.26e+06u l=150000u
@@ -34,4 +49,3 @@
 M1015 Y B1 a_49_367# VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a22oi/sky130_fd_sc_lp__a22oi_4.spice b/cells/a22oi/sky130_fd_sc_lp__a22oi_4.spice
index 71cce2d..db75066 100644
--- a/cells/a22oi/sky130_fd_sc_lp__a22oi_4.spice
+++ b/cells/a22oi/sky130_fd_sc_lp__a22oi_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__a22oi_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__a22oi_4 A1 A2 B1 B2 VGND VNB VPB VPWR Y
 M1000 Y B1 a_89_367# VPB phighvt w=1.26e+06u l=150000u
@@ -66,4 +81,3 @@
 M1031 VGND A2 a_867_47# VNB nshort w=840000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a22oi/sky130_fd_sc_lp__a22oi_lp.spice b/cells/a22oi/sky130_fd_sc_lp__a22oi_lp.spice
index 8130acf..5da85a5 100644
--- a/cells/a22oi/sky130_fd_sc_lp__a22oi_lp.spice
+++ b/cells/a22oi/sky130_fd_sc_lp__a22oi_lp.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__a22oi_lp.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__a22oi_lp A1 A2 B1 B2 VGND VNB VPB VPWR Y
 M1000 a_357_47# A1 Y VNB nshort w=420000u l=150000u
@@ -18,4 +33,3 @@
 M1007 Y B1 a_171_47# VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a22oi/sky130_fd_sc_lp__a22oi_m.spice b/cells/a22oi/sky130_fd_sc_lp__a22oi_m.spice
index 95a79de..4a85755 100644
--- a/cells/a22oi/sky130_fd_sc_lp__a22oi_m.spice
+++ b/cells/a22oi/sky130_fd_sc_lp__a22oi_m.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__a22oi_m.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__a22oi_m A1 A2 B1 B2 VGND VNB VPB VPWR Y
 M1000 a_39_496# A2 VPWR VPB phighvt w=420000u l=150000u
@@ -18,4 +33,3 @@
 M1007 a_133_47# B2 VGND VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a2bb2o/sky130_fd_sc_lp__a2bb2o_0.spice b/cells/a2bb2o/sky130_fd_sc_lp__a2bb2o_0.spice
index 47f9f0c..c1788d9 100644
--- a/cells/a2bb2o/sky130_fd_sc_lp__a2bb2o_0.spice
+++ b/cells/a2bb2o/sky130_fd_sc_lp__a2bb2o_0.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__a2bb2o_0.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__a2bb2o_0 A1_N A2_N B1 B2 VGND VNB VPB VPWR X
 M1000 VGND a_59_194# X VNB nshort w=420000u l=150000u
@@ -26,4 +41,3 @@
 M1011 a_516_535# a_237_47# a_59_194# VPB phighvt w=420000u l=150000u
 +  ad=0p pd=0u as=1.113e+11p ps=1.37e+06u
 .ends
-
diff --git a/cells/a2bb2o/sky130_fd_sc_lp__a2bb2o_1.spice b/cells/a2bb2o/sky130_fd_sc_lp__a2bb2o_1.spice
index 9d34f8f..b37ff82 100644
--- a/cells/a2bb2o/sky130_fd_sc_lp__a2bb2o_1.spice
+++ b/cells/a2bb2o/sky130_fd_sc_lp__a2bb2o_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__a2bb2o_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__a2bb2o_1 A1_N A2_N B1 B2 VGND VNB VPB VPWR X
 M1000 a_271_367# A1_N VPWR VPB phighvt w=420000u l=150000u
@@ -26,4 +41,3 @@
 M1011 VGND a_91_269# X VNB nshort w=840000u l=150000u
 +  ad=0p pd=0u as=2.226e+11p ps=2.21e+06u
 .ends
-
diff --git a/cells/a2bb2o/sky130_fd_sc_lp__a2bb2o_2.spice b/cells/a2bb2o/sky130_fd_sc_lp__a2bb2o_2.spice
index 2501df4..2bfc271 100644
--- a/cells/a2bb2o/sky130_fd_sc_lp__a2bb2o_2.spice
+++ b/cells/a2bb2o/sky130_fd_sc_lp__a2bb2o_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__a2bb2o_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__a2bb2o_2 A1_N A2_N B1 B2 VGND VNB VPB VPWR X
 M1000 VPWR a_218_131# X VPB phighvt w=1.26e+06u l=150000u
@@ -30,4 +45,3 @@
 M1013 a_146_131# B1 VGND VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a2bb2o/sky130_fd_sc_lp__a2bb2o_4.spice b/cells/a2bb2o/sky130_fd_sc_lp__a2bb2o_4.spice
index 0e010a1..1b17e7e 100644
--- a/cells/a2bb2o/sky130_fd_sc_lp__a2bb2o_4.spice
+++ b/cells/a2bb2o/sky130_fd_sc_lp__a2bb2o_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__a2bb2o_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__a2bb2o_4 A1_N A2_N B1 B2 VGND VNB VPB VPWR X
 M1000 a_742_367# A2_N a_436_21# VPB phighvt w=1.26e+06u l=150000u
@@ -58,4 +73,3 @@
 M1027 VGND A2_N a_436_21# VNB nshort w=840000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a2bb2o/sky130_fd_sc_lp__a2bb2o_lp.spice b/cells/a2bb2o/sky130_fd_sc_lp__a2bb2o_lp.spice
index 238cd64..fddce91 100644
--- a/cells/a2bb2o/sky130_fd_sc_lp__a2bb2o_lp.spice
+++ b/cells/a2bb2o/sky130_fd_sc_lp__a2bb2o_lp.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__a2bb2o_lp.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__a2bb2o_lp A1_N A2_N B1 B2 VGND VNB VPB VPWR X
 M1000 a_742_74# A1_N VGND VNB nshort w=420000u l=150000u
@@ -34,4 +49,3 @@
 M1015 a_284_31# A2_N a_794_409# VPB phighvt w=1e+06u l=250000u
 +  ad=2.85e+11p pd=2.57e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/a2bb2o/sky130_fd_sc_lp__a2bb2o_m.spice b/cells/a2bb2o/sky130_fd_sc_lp__a2bb2o_m.spice
index fba62fc..c6867b1 100644
--- a/cells/a2bb2o/sky130_fd_sc_lp__a2bb2o_m.spice
+++ b/cells/a2bb2o/sky130_fd_sc_lp__a2bb2o_m.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__a2bb2o_m.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__a2bb2o_m A1_N A2_N B1 B2 VGND VNB VPB VPWR X
 M1000 VPWR a_85_345# X VPB phighvt w=420000u l=150000u
@@ -26,4 +41,3 @@
 M1011 a_479_429# a_210_125# a_85_345# VPB phighvt w=420000u l=150000u
 +  ad=0p pd=0u as=1.141e+11p ps=1.41e+06u
 .ends
-
diff --git a/cells/a2bb2oi/sky130_fd_sc_lp__a2bb2oi_0.spice b/cells/a2bb2oi/sky130_fd_sc_lp__a2bb2oi_0.spice
index 08d292c..492cabf 100644
--- a/cells/a2bb2oi/sky130_fd_sc_lp__a2bb2oi_0.spice
+++ b/cells/a2bb2oi/sky130_fd_sc_lp__a2bb2oi_0.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__a2bb2oi_0.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__a2bb2oi_0 A1_N A2_N B1 B2 VGND VNB VPB VPWR Y
 M1000 a_481_47# B2 Y VNB nshort w=420000u l=150000u
@@ -22,4 +37,3 @@
 M1009 a_420_387# a_110_47# Y VPB phighvt w=640000u l=150000u
 +  ad=0p pd=0u as=1.696e+11p ps=1.81e+06u
 .ends
-
diff --git a/cells/a2bb2oi/sky130_fd_sc_lp__a2bb2oi_1.spice b/cells/a2bb2oi/sky130_fd_sc_lp__a2bb2oi_1.spice
index 06cabb4..db01380 100644
--- a/cells/a2bb2oi/sky130_fd_sc_lp__a2bb2oi_1.spice
+++ b/cells/a2bb2oi/sky130_fd_sc_lp__a2bb2oi_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__a2bb2oi_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__a2bb2oi_1 A1_N A2_N B1 B2 VGND VNB VPB VPWR Y
 M1000 a_381_367# B1 VPWR VPB phighvt w=1.26e+06u l=150000u
@@ -22,4 +37,3 @@
 M1009 VPWR B2 a_381_367# VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a2bb2oi/sky130_fd_sc_lp__a2bb2oi_2.spice b/cells/a2bb2oi/sky130_fd_sc_lp__a2bb2oi_2.spice
index 3adbfc6..4320fdc 100644
--- a/cells/a2bb2oi/sky130_fd_sc_lp__a2bb2oi_2.spice
+++ b/cells/a2bb2oi/sky130_fd_sc_lp__a2bb2oi_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__a2bb2oi_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__a2bb2oi_2 A1_N A2_N B1 B2 VGND VNB VPB VPWR Y
 M1000 VGND A2_N a_459_39# VNB nshort w=840000u l=150000u
@@ -42,4 +57,3 @@
 M1019 a_459_39# A1_N VGND VNB nshort w=840000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a2bb2oi/sky130_fd_sc_lp__a2bb2oi_4.spice b/cells/a2bb2oi/sky130_fd_sc_lp__a2bb2oi_4.spice
index e8db5e5..89faa67 100644
--- a/cells/a2bb2oi/sky130_fd_sc_lp__a2bb2oi_4.spice
+++ b/cells/a2bb2oi/sky130_fd_sc_lp__a2bb2oi_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__a2bb2oi_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__a2bb2oi_4 A1_N A2_N B1 B2 VGND VNB VPB VPWR Y
 M1000 a_73_367# B2 VPWR VPB phighvt w=1.26e+06u l=150000u
@@ -82,4 +97,3 @@
 M1039 VGND A2_N a_832_21# VNB nshort w=840000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a2bb2oi/sky130_fd_sc_lp__a2bb2oi_lp.spice b/cells/a2bb2oi/sky130_fd_sc_lp__a2bb2oi_lp.spice
index c11516d..2b77aab 100644
--- a/cells/a2bb2oi/sky130_fd_sc_lp__a2bb2oi_lp.spice
+++ b/cells/a2bb2oi/sky130_fd_sc_lp__a2bb2oi_lp.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__a2bb2oi_lp.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__a2bb2oi_lp A1_N A2_N B1 B2 VGND VNB VPB VPWR Y
 M1000 VGND A1_N a_652_47# VNB nshort w=420000u l=150000u
@@ -28,4 +43,3 @@
 M1012 a_296_146# A2_N a_494_47# VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a2bb2oi/sky130_fd_sc_lp__a2bb2oi_m.spice b/cells/a2bb2oi/sky130_fd_sc_lp__a2bb2oi_m.spice
index 77bd672..2838f32 100644
--- a/cells/a2bb2oi/sky130_fd_sc_lp__a2bb2oi_m.spice
+++ b/cells/a2bb2oi/sky130_fd_sc_lp__a2bb2oi_m.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__a2bb2oi_m.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__a2bb2oi_m A1_N A2_N B1 B2 VGND VNB VPB VPWR Y
 M1000 VGND A2_N a_202_47# VNB nshort w=420000u l=150000u
@@ -22,4 +37,3 @@
 M1009 a_403_387# B1 VPWR VPB phighvt w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a311o/sky130_fd_sc_lp__a311o_0.spice b/cells/a311o/sky130_fd_sc_lp__a311o_0.spice
index ec8bfd9..d9e0c03 100644
--- a/cells/a311o/sky130_fd_sc_lp__a311o_0.spice
+++ b/cells/a311o/sky130_fd_sc_lp__a311o_0.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__a311o_0.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__a311o_0 A1 A2 A3 B1 C1 VGND VNB VPB VPWR X
 M1000 a_72_312# C1 a_558_486# VPB phighvt w=640000u l=150000u
@@ -26,4 +41,3 @@
 M1011 a_246_48# A3 VGND VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a311o/sky130_fd_sc_lp__a311o_1.spice b/cells/a311o/sky130_fd_sc_lp__a311o_1.spice
index 77c4439..69ce69a 100644
--- a/cells/a311o/sky130_fd_sc_lp__a311o_1.spice
+++ b/cells/a311o/sky130_fd_sc_lp__a311o_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__a311o_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__a311o_1 A1 A2 A3 B1 C1 VGND VNB VPB VPWR X
 M1000 VPWR A2 a_259_367# VPB phighvt w=1.26e+06u l=150000u
@@ -26,4 +41,3 @@
 M1011 a_609_367# B1 a_259_367# VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a311o/sky130_fd_sc_lp__a311o_2.spice b/cells/a311o/sky130_fd_sc_lp__a311o_2.spice
index 6558444..f8cce18 100644
--- a/cells/a311o/sky130_fd_sc_lp__a311o_2.spice
+++ b/cells/a311o/sky130_fd_sc_lp__a311o_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__a311o_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__a311o_2 A1 A2 A3 B1 C1 VGND VNB VPB VPWR X
 M1000 a_85_21# A1 a_427_47# VNB nshort w=840000u l=150000u
@@ -30,4 +45,3 @@
 M1013 X a_85_21# VGND VNB nshort w=840000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a311o/sky130_fd_sc_lp__a311o_4.spice b/cells/a311o/sky130_fd_sc_lp__a311o_4.spice
index ab6e98a..f834746 100644
--- a/cells/a311o/sky130_fd_sc_lp__a311o_4.spice
+++ b/cells/a311o/sky130_fd_sc_lp__a311o_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__a311o_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__a311o_4 A1 A2 A3 B1 C1 VGND VNB VPB VPWR X
 M1000 a_111_47# B1 VGND VNB nshort w=840000u l=150000u
@@ -58,4 +73,3 @@
 M1027 a_283_367# B1 a_28_367# VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a311o/sky130_fd_sc_lp__a311o_lp.spice b/cells/a311o/sky130_fd_sc_lp__a311o_lp.spice
index 6fca930..0d1ede2 100644
--- a/cells/a311o/sky130_fd_sc_lp__a311o_lp.spice
+++ b/cells/a311o/sky130_fd_sc_lp__a311o_lp.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__a311o_lp.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__a311o_lp A1 A2 A3 B1 C1 VGND VNB VPB VPWR X
 M1000 a_257_414# A1 VPWR VPB phighvt w=1e+06u l=250000u
@@ -32,4 +47,3 @@
 M1014 a_115_47# a_85_21# X VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=1.197e+11p ps=1.41e+06u
 .ends
-
diff --git a/cells/a311o/sky130_fd_sc_lp__a311o_m.spice b/cells/a311o/sky130_fd_sc_lp__a311o_m.spice
index 9f6459f..a8fce9e 100644
--- a/cells/a311o/sky130_fd_sc_lp__a311o_m.spice
+++ b/cells/a311o/sky130_fd_sc_lp__a311o_m.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__a311o_m.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__a311o_m A1 A2 A3 B1 C1 VGND VNB VPB VPWR X
 M1000 VGND B1 a_54_154# VNB nshort w=420000u l=150000u
@@ -26,4 +41,3 @@
 M1011 a_196_403# A3 VPWR VPB phighvt w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a311oi/sky130_fd_sc_lp__a311oi_0.spice b/cells/a311oi/sky130_fd_sc_lp__a311oi_0.spice
index e9bf2d6..7a95e84 100644
--- a/cells/a311oi/sky130_fd_sc_lp__a311oi_0.spice
+++ b/cells/a311oi/sky130_fd_sc_lp__a311oi_0.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__a311oi_0.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__a311oi_0 A1 A2 A3 B1 C1 VGND VNB VPB VPWR Y
 M1000 a_158_473# A3 VPWR VPB phighvt w=640000u l=150000u
@@ -22,4 +37,3 @@
 M1009 VGND B1 Y VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a311oi/sky130_fd_sc_lp__a311oi_1.spice b/cells/a311oi/sky130_fd_sc_lp__a311oi_1.spice
index 072c3f0..13724e0 100644
--- a/cells/a311oi/sky130_fd_sc_lp__a311oi_1.spice
+++ b/cells/a311oi/sky130_fd_sc_lp__a311oi_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__a311oi_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__a311oi_1 A1 A2 A3 B1 C1 VGND VNB VPB VPWR Y
 M1000 VPWR A2 a_181_367# VPB phighvt w=1.26e+06u l=150000u
@@ -22,4 +37,3 @@
 M1009 a_181_367# A3 VPWR VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a311oi/sky130_fd_sc_lp__a311oi_2.spice b/cells/a311oi/sky130_fd_sc_lp__a311oi_2.spice
index 790efaf..2d81952 100644
--- a/cells/a311oi/sky130_fd_sc_lp__a311oi_2.spice
+++ b/cells/a311oi/sky130_fd_sc_lp__a311oi_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__a311oi_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__a311oi_2 A1 A2 A3 B1 C1 VGND VNB VPB VPWR Y
 M1000 a_135_367# A1 VPWR VPB phighvt w=1.26e+06u l=150000u
@@ -42,4 +57,3 @@
 M1019 a_727_367# B1 a_135_367# VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a311oi/sky130_fd_sc_lp__a311oi_4.spice b/cells/a311oi/sky130_fd_sc_lp__a311oi_4.spice
index 132fb0d..0a50756 100644
--- a/cells/a311oi/sky130_fd_sc_lp__a311oi_4.spice
+++ b/cells/a311oi/sky130_fd_sc_lp__a311oi_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__a311oi_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__a311oi_4 A1 A2 A3 B1 C1 VGND VNB VPB VPWR Y
 M1000 Y A1 a_454_47# VNB nshort w=840000u l=150000u
@@ -82,4 +97,3 @@
 M1039 VGND A3 a_27_47# VNB nshort w=840000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a311oi/sky130_fd_sc_lp__a311oi_lp.spice b/cells/a311oi/sky130_fd_sc_lp__a311oi_lp.spice
index 2fac55c..7549724 100644
--- a/cells/a311oi/sky130_fd_sc_lp__a311oi_lp.spice
+++ b/cells/a311oi/sky130_fd_sc_lp__a311oi_lp.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__a311oi_lp.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__a311oi_lp A1 A2 A3 B1 C1 VGND VNB VPB VPWR Y
 M1000 a_134_409# A3 VPWR VPB phighvt w=1e+06u l=250000u
@@ -26,4 +41,3 @@
 M1011 VGND C1 a_516_47# VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a311oi/sky130_fd_sc_lp__a311oi_m.spice b/cells/a311oi/sky130_fd_sc_lp__a311oi_m.spice
index 85da1de..f8ae8aa 100644
--- a/cells/a311oi/sky130_fd_sc_lp__a311oi_m.spice
+++ b/cells/a311oi/sky130_fd_sc_lp__a311oi_m.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__a311oi_m.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__a311oi_m A1 A2 A3 B1 C1 VGND VNB VPB VPWR Y
 M1000 a_191_535# A1 VPWR VPB phighvt w=420000u l=150000u
@@ -22,4 +37,3 @@
 M1009 Y A1 a_271_51# VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a31o/sky130_fd_sc_lp__a31o_0.spice b/cells/a31o/sky130_fd_sc_lp__a31o_0.spice
index 9e1e67d..7b8a319 100644
--- a/cells/a31o/sky130_fd_sc_lp__a31o_0.spice
+++ b/cells/a31o/sky130_fd_sc_lp__a31o_0.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__a31o_0.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__a31o_0 A1 A2 A3 B1 VGND VNB VPB VPWR X
 M1000 a_361_50# A2 a_272_50# VNB nshort w=420000u l=150000u
@@ -22,4 +37,3 @@
 M1009 a_86_241# A1 a_361_50# VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a31o/sky130_fd_sc_lp__a31o_1.spice b/cells/a31o/sky130_fd_sc_lp__a31o_1.spice
index 6e1dec1..cc55021 100644
--- a/cells/a31o/sky130_fd_sc_lp__a31o_1.spice
+++ b/cells/a31o/sky130_fd_sc_lp__a31o_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__a31o_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__a31o_1 A1 A2 A3 B1 VGND VNB VPB VPWR X
 M1000 a_269_367# A1 VPWR VPB phighvt w=1.26e+06u l=150000u
@@ -22,4 +37,3 @@
 M1009 VPWR A2 a_269_367# VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a31o/sky130_fd_sc_lp__a31o_2.spice b/cells/a31o/sky130_fd_sc_lp__a31o_2.spice
index 97aafcc..ad8a5eb 100644
--- a/cells/a31o/sky130_fd_sc_lp__a31o_2.spice
+++ b/cells/a31o/sky130_fd_sc_lp__a31o_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__a31o_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__a31o_2 A1 A2 A3 B1 VGND VNB VPB VPWR X
 M1000 VGND B1 a_85_23# VNB nshort w=840000u l=150000u
@@ -26,4 +41,3 @@
 M1011 a_85_23# A1 a_427_49# VNB nshort w=840000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a31o/sky130_fd_sc_lp__a31o_4.spice b/cells/a31o/sky130_fd_sc_lp__a31o_4.spice
index 903a196..f751a7b 100644
--- a/cells/a31o/sky130_fd_sc_lp__a31o_4.spice
+++ b/cells/a31o/sky130_fd_sc_lp__a31o_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__a31o_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__a31o_4 A1 A2 A3 B1 VGND VNB VPB VPWR X
 M1000 a_726_47# A2 a_919_67# VNB nshort w=840000u l=150000u
@@ -50,4 +65,3 @@
 M1023 X a_110_47# VGND VNB nshort w=840000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a31o/sky130_fd_sc_lp__a31o_lp.spice b/cells/a31o/sky130_fd_sc_lp__a31o_lp.spice
index 4376121..1dde851 100644
--- a/cells/a31o/sky130_fd_sc_lp__a31o_lp.spice
+++ b/cells/a31o/sky130_fd_sc_lp__a31o_lp.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__a31o_lp.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__a31o_lp A1 A2 A3 B1 VGND VNB VPB VPWR X
 M1000 VPWR A3 a_155_409# VPB phighvt w=1e+06u l=250000u
@@ -26,4 +41,3 @@
 M1011 VGND A3 a_352_56# VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a31o/sky130_fd_sc_lp__a31o_m.spice b/cells/a31o/sky130_fd_sc_lp__a31o_m.spice
index 0cbbae8..ce4737f 100644
--- a/cells/a31o/sky130_fd_sc_lp__a31o_m.spice
+++ b/cells/a31o/sky130_fd_sc_lp__a31o_m.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__a31o_m.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__a31o_m A1 A2 A3 B1 VGND VNB VPB VPWR X
 M1000 VPWR a_86_172# X VPB phighvt w=420000u l=150000u
@@ -22,4 +37,3 @@
 M1009 a_274_512# A1 VPWR VPB phighvt w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a31oi/sky130_fd_sc_lp__a31oi_0.spice b/cells/a31oi/sky130_fd_sc_lp__a31oi_0.spice
index 0dd8f4e..2c3dce3 100644
--- a/cells/a31oi/sky130_fd_sc_lp__a31oi_0.spice
+++ b/cells/a31oi/sky130_fd_sc_lp__a31oi_0.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__a31oi_0.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__a31oi_0 A1 A2 A3 B1 VGND VNB VPB VPWR Y
 M1000 Y A1 a_201_47# VNB nshort w=420000u l=150000u
@@ -18,4 +33,3 @@
 M1007 a_201_47# A2 a_123_47# VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a31oi/sky130_fd_sc_lp__a31oi_1.spice b/cells/a31oi/sky130_fd_sc_lp__a31oi_1.spice
index 66048f5..04f8489 100644
--- a/cells/a31oi/sky130_fd_sc_lp__a31oi_1.spice
+++ b/cells/a31oi/sky130_fd_sc_lp__a31oi_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__a31oi_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__a31oi_1 A1 A2 A3 B1 VGND VNB VPB VPWR Y
 M1000 a_151_367# A3 VPWR VPB phighvt w=1.26e+06u l=150000u
@@ -18,4 +33,3 @@
 M1007 Y A1 a_223_47# VNB nshort w=840000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a31oi/sky130_fd_sc_lp__a31oi_2.spice b/cells/a31oi/sky130_fd_sc_lp__a31oi_2.spice
index e2a1682..26c7c4d 100644
--- a/cells/a31oi/sky130_fd_sc_lp__a31oi_2.spice
+++ b/cells/a31oi/sky130_fd_sc_lp__a31oi_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__a31oi_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__a31oi_2 A1 A2 A3 B1 VGND VNB VPB VPWR Y
 M1000 VPWR A2 a_27_367# VPB phighvt w=1.26e+06u l=150000u
@@ -34,4 +49,3 @@
 M1015 Y A1 a_282_69# VNB nshort w=840000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a31oi/sky130_fd_sc_lp__a31oi_4.spice b/cells/a31oi/sky130_fd_sc_lp__a31oi_4.spice
index bfeb204..18f9a80 100644
--- a/cells/a31oi/sky130_fd_sc_lp__a31oi_4.spice
+++ b/cells/a31oi/sky130_fd_sc_lp__a31oi_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__a31oi_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__a31oi_4 A1 A2 A3 B1 VGND VNB VPB VPWR Y
 M1000 a_41_367# A1 VPWR VPB phighvt w=1.26e+06u l=150000u
@@ -66,4 +81,3 @@
 M1031 VPWR A2 a_41_367# VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a31oi/sky130_fd_sc_lp__a31oi_lp.spice b/cells/a31oi/sky130_fd_sc_lp__a31oi_lp.spice
index c01b216..6a4ce59 100644
--- a/cells/a31oi/sky130_fd_sc_lp__a31oi_lp.spice
+++ b/cells/a31oi/sky130_fd_sc_lp__a31oi_lp.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__a31oi_lp.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__a31oi_lp A1 A2 A3 B1 VGND VNB VPB VPWR Y
 M1000 VPWR A2 a_139_409# VPB phighvt w=1e+06u l=250000u
@@ -20,4 +35,3 @@
 M1008 Y B1 a_139_409# VPB phighvt w=1e+06u l=250000u
 +  ad=2.85e+11p pd=2.57e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/a31oi/sky130_fd_sc_lp__a31oi_m.spice b/cells/a31oi/sky130_fd_sc_lp__a31oi_m.spice
index ed207ce..ef1c29b 100644
--- a/cells/a31oi/sky130_fd_sc_lp__a31oi_m.spice
+++ b/cells/a31oi/sky130_fd_sc_lp__a31oi_m.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__a31oi_m.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__a31oi_m A1 A2 A3 B1 VGND VNB VPB VPWR Y
 M1000 a_169_500# A1 VPWR VPB phighvt w=420000u l=150000u
@@ -18,4 +33,3 @@
 M1007 a_169_500# A3 VPWR VPB phighvt w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a32o/sky130_fd_sc_lp__a32o_0.spice b/cells/a32o/sky130_fd_sc_lp__a32o_0.spice
index 365504f..fd24cff 100644
--- a/cells/a32o/sky130_fd_sc_lp__a32o_0.spice
+++ b/cells/a32o/sky130_fd_sc_lp__a32o_0.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__a32o_0.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__a32o_0 A1 A2 A3 B1 B2 VGND VNB VPB VPWR X
 M1000 a_363_47# A2 a_275_47# VNB nshort w=420000u l=150000u
@@ -26,4 +41,3 @@
 M1011 a_269_429# A1 VPWR VPB phighvt w=640000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a32o/sky130_fd_sc_lp__a32o_1.spice b/cells/a32o/sky130_fd_sc_lp__a32o_1.spice
index 1605681..a9c79db 100644
--- a/cells/a32o/sky130_fd_sc_lp__a32o_1.spice
+++ b/cells/a32o/sky130_fd_sc_lp__a32o_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__a32o_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__a32o_1 A1 A2 A3 B1 B2 VGND VNB VPB VPWR X
 M1000 VPWR A2 a_249_367# VPB phighvt w=1.26e+06u l=150000u
@@ -26,4 +41,3 @@
 M1011 a_249_367# B2 a_80_21# VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a32o/sky130_fd_sc_lp__a32o_2.spice b/cells/a32o/sky130_fd_sc_lp__a32o_2.spice
index 9a0579d..d22d055 100644
--- a/cells/a32o/sky130_fd_sc_lp__a32o_2.spice
+++ b/cells/a32o/sky130_fd_sc_lp__a32o_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__a32o_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__a32o_2 A1 A2 A3 B1 B2 VGND VNB VPB VPWR X
 M1000 a_432_47# B2 VGND VNB nshort w=840000u l=150000u
@@ -30,4 +45,3 @@
 M1013 VGND A3 a_739_47# VNB nshort w=840000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a32o/sky130_fd_sc_lp__a32o_4.spice b/cells/a32o/sky130_fd_sc_lp__a32o_4.spice
index b9699c6..4708b66 100644
--- a/cells/a32o/sky130_fd_sc_lp__a32o_4.spice
+++ b/cells/a32o/sky130_fd_sc_lp__a32o_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__a32o_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__a32o_4 A1 A2 A3 B1 B2 VGND VNB VPB VPWR X
 M1000 VPWR a_101_21# X VPB phighvt w=1.26e+06u l=150000u
@@ -58,4 +73,3 @@
 M1027 a_1208_65# B1 a_101_21# VNB nshort w=840000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a32o/sky130_fd_sc_lp__a32o_lp.spice b/cells/a32o/sky130_fd_sc_lp__a32o_lp.spice
index f02e311..27d4301 100644
--- a/cells/a32o/sky130_fd_sc_lp__a32o_lp.spice
+++ b/cells/a32o/sky130_fd_sc_lp__a32o_lp.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__a32o_lp.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__a32o_lp A1 A2 A3 B1 B2 VGND VNB VPB VPWR X
 M1000 a_30_419# B1 a_137_419# VPB phighvt w=1e+06u l=250000u
@@ -28,4 +43,3 @@
 M1012 a_30_419# A2 VPWR VPB phighvt w=1e+06u l=250000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a32o/sky130_fd_sc_lp__a32o_m.spice b/cells/a32o/sky130_fd_sc_lp__a32o_m.spice
index 9003919..02015ab 100644
--- a/cells/a32o/sky130_fd_sc_lp__a32o_m.spice
+++ b/cells/a32o/sky130_fd_sc_lp__a32o_m.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__a32o_m.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__a32o_m A1 A2 A3 B1 B2 VGND VNB VPB VPWR X
 M1000 a_300_47# A2 a_228_47# VNB nshort w=420000u l=150000u
@@ -26,4 +41,3 @@
 M1011 VPWR A2 a_228_385# VPB phighvt w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a32oi/sky130_fd_sc_lp__a32oi_0.spice b/cells/a32oi/sky130_fd_sc_lp__a32oi_0.spice
index 8c5e7aa..10b30c1 100644
--- a/cells/a32oi/sky130_fd_sc_lp__a32oi_0.spice
+++ b/cells/a32oi/sky130_fd_sc_lp__a32oi_0.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__a32oi_0.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__a32oi_0 A1 A2 A3 B1 B2 VGND VNB VPB VPWR Y
 M1000 VPWR A3 a_37_397# VPB phighvt w=640000u l=150000u
@@ -22,4 +37,3 @@
 M1009 a_333_47# A1 Y VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a32oi/sky130_fd_sc_lp__a32oi_1.spice b/cells/a32oi/sky130_fd_sc_lp__a32oi_1.spice
index 53aafa3..cc13d02 100644
--- a/cells/a32oi/sky130_fd_sc_lp__a32oi_1.spice
+++ b/cells/a32oi/sky130_fd_sc_lp__a32oi_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__a32oi_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__a32oi_1 A1 A2 A3 B1 B2 VGND VNB VPB VPWR Y
 M1000 Y B2 a_58_367# VPB phighvt w=1.26e+06u l=150000u
@@ -22,4 +37,3 @@
 M1009 VGND A3 a_434_69# VNB nshort w=840000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a32oi/sky130_fd_sc_lp__a32oi_2.spice b/cells/a32oi/sky130_fd_sc_lp__a32oi_2.spice
index 839ad9a..f0da4d3 100644
--- a/cells/a32oi/sky130_fd_sc_lp__a32oi_2.spice
+++ b/cells/a32oi/sky130_fd_sc_lp__a32oi_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__a32oi_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__a32oi_2 A1 A2 A3 B1 B2 VGND VNB VPB VPWR Y
 M1000 a_43_367# B1 Y VPB phighvt w=1.26e+06u l=150000u
@@ -42,4 +57,3 @@
 M1019 VPWR A1 a_43_367# VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a32oi/sky130_fd_sc_lp__a32oi_4.spice b/cells/a32oi/sky130_fd_sc_lp__a32oi_4.spice
index 41b7a9b..fa4873b 100644
--- a/cells/a32oi/sky130_fd_sc_lp__a32oi_4.spice
+++ b/cells/a32oi/sky130_fd_sc_lp__a32oi_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__a32oi_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__a32oi_4 A1 A2 A3 B1 B2 VGND VNB VPB VPWR Y
 M1000 VPWR A3 a_42_367# VPB phighvt w=1.26e+06u l=150000u
@@ -82,4 +97,3 @@
 M1039 VPWR A1 a_42_367# VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a32oi/sky130_fd_sc_lp__a32oi_lp.spice b/cells/a32oi/sky130_fd_sc_lp__a32oi_lp.spice
index a0b825c..325a3f1 100644
--- a/cells/a32oi/sky130_fd_sc_lp__a32oi_lp.spice
+++ b/cells/a32oi/sky130_fd_sc_lp__a32oi_lp.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__a32oi_lp.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__a32oi_lp A1 A2 A3 B1 B2 VGND VNB VPB VPWR Y
 M1000 a_56_409# B1 Y VPB phighvt w=1e+06u l=250000u
@@ -22,4 +37,3 @@
 M1009 VPWR A3 a_56_409# VPB phighvt w=1e+06u l=250000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a32oi/sky130_fd_sc_lp__a32oi_m.spice b/cells/a32oi/sky130_fd_sc_lp__a32oi_m.spice
index f124b61..777c304 100644
--- a/cells/a32oi/sky130_fd_sc_lp__a32oi_m.spice
+++ b/cells/a32oi/sky130_fd_sc_lp__a32oi_m.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__a32oi_m.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__a32oi_m A1 A2 A3 B1 B2 VGND VNB VPB VPWR Y
 M1000 Y B2 a_40_500# VPB phighvt w=420000u l=150000u
@@ -22,4 +37,3 @@
 M1009 a_152_47# B2 VGND VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a41o/sky130_fd_sc_lp__a41o_0.spice b/cells/a41o/sky130_fd_sc_lp__a41o_0.spice
index 5f508a2..46636a9 100644
--- a/cells/a41o/sky130_fd_sc_lp__a41o_0.spice
+++ b/cells/a41o/sky130_fd_sc_lp__a41o_0.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__a41o_0.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__a41o_0 A1 A2 A3 A4 B1 VGND VNB VPB VPWR X
 M1000 a_321_473# A2 VPWR VPB phighvt w=640000u l=150000u
@@ -26,4 +41,3 @@
 M1011 a_385_47# A1 a_80_309# VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a41o/sky130_fd_sc_lp__a41o_1.spice b/cells/a41o/sky130_fd_sc_lp__a41o_1.spice
index 9c556ba..deb7d4b 100644
--- a/cells/a41o/sky130_fd_sc_lp__a41o_1.spice
+++ b/cells/a41o/sky130_fd_sc_lp__a41o_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__a41o_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__a41o_1 A1 A2 A3 A4 B1 VGND VNB VPB VPWR X
 M1000 a_550_47# A2 a_478_47# VNB nshort w=840000u l=150000u
@@ -26,4 +41,3 @@
 M1011 a_346_367# B1 a_113_237# VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=3.339e+11p ps=3.05e+06u
 .ends
-
diff --git a/cells/a41o/sky130_fd_sc_lp__a41o_2.spice b/cells/a41o/sky130_fd_sc_lp__a41o_2.spice
index 778957b..5bbd865 100644
--- a/cells/a41o/sky130_fd_sc_lp__a41o_2.spice
+++ b/cells/a41o/sky130_fd_sc_lp__a41o_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__a41o_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__a41o_2 A1 A2 A3 A4 B1 VGND VNB VPB VPWR X
 M1000 VPWR A2 a_453_367# VPB phighvt w=1.26e+06u l=150000u
@@ -30,4 +45,3 @@
 M1013 X a_90_53# VPWR VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a41o/sky130_fd_sc_lp__a41o_4.spice b/cells/a41o/sky130_fd_sc_lp__a41o_4.spice
index f967592..9347556 100644
--- a/cells/a41o/sky130_fd_sc_lp__a41o_4.spice
+++ b/cells/a41o/sky130_fd_sc_lp__a41o_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__a41o_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__a41o_4 A1 A2 A3 A4 B1 VGND VNB VPB VPWR X
 M1000 X a_100_23# VPWR VPB phighvt w=1.26e+06u l=150000u
@@ -58,4 +73,3 @@
 M1027 a_495_367# A2 VPWR VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a41o/sky130_fd_sc_lp__a41o_lp.spice b/cells/a41o/sky130_fd_sc_lp__a41o_lp.spice
index 9beb5d4..830aa35 100644
--- a/cells/a41o/sky130_fd_sc_lp__a41o_lp.spice
+++ b/cells/a41o/sky130_fd_sc_lp__a41o_lp.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__a41o_lp.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__a41o_lp A1 A2 A3 A4 B1 VGND VNB VPB VPWR X
 M1000 a_428_47# A1 a_314_47# VNB nshort w=420000u l=150000u
@@ -30,4 +45,3 @@
 M1013 X a_428_47# VPWR VPB phighvt w=1e+06u l=250000u
 +  ad=2.85e+11p pd=2.57e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/a41o/sky130_fd_sc_lp__a41o_m.spice b/cells/a41o/sky130_fd_sc_lp__a41o_m.spice
index 73cdee7..f40a80e 100644
--- a/cells/a41o/sky130_fd_sc_lp__a41o_m.spice
+++ b/cells/a41o/sky130_fd_sc_lp__a41o_m.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__a41o_m.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__a41o_m A1 A2 A3 A4 B1 VGND VNB VPB VPWR X
 M1000 VPWR A1 a_300_508# VPB phighvt w=420000u l=150000u
@@ -26,4 +41,3 @@
 M1011 a_300_508# A4 VPWR VPB phighvt w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a41oi/sky130_fd_sc_lp__a41oi_0.spice b/cells/a41oi/sky130_fd_sc_lp__a41oi_0.spice
index c4e391d..1d62915 100644
--- a/cells/a41oi/sky130_fd_sc_lp__a41oi_0.spice
+++ b/cells/a41oi/sky130_fd_sc_lp__a41oi_0.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__a41oi_0.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__a41oi_0 A1 A2 A3 A4 B1 VGND VNB VPB VPWR Y
 M1000 VPWR A3 a_176_479# VPB phighvt w=640000u l=150000u
@@ -22,4 +37,3 @@
 M1009 VPWR A1 a_176_479# VPB phighvt w=640000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a41oi/sky130_fd_sc_lp__a41oi_1.spice b/cells/a41oi/sky130_fd_sc_lp__a41oi_1.spice
index 3cb9861..82e57bf 100644
--- a/cells/a41oi/sky130_fd_sc_lp__a41oi_1.spice
+++ b/cells/a41oi/sky130_fd_sc_lp__a41oi_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__a41oi_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__a41oi_1 A1 A2 A3 A4 B1 VGND VNB VPB VPWR Y
 M1000 a_128_367# A3 VPWR VPB phighvt w=1.26e+06u l=150000u
@@ -22,4 +37,3 @@
 M1009 a_304_47# A4 VGND VNB nshort w=840000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a41oi/sky130_fd_sc_lp__a41oi_2.spice b/cells/a41oi/sky130_fd_sc_lp__a41oi_2.spice
index edfa773..ff68d16 100644
--- a/cells/a41oi/sky130_fd_sc_lp__a41oi_2.spice
+++ b/cells/a41oi/sky130_fd_sc_lp__a41oi_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__a41oi_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__a41oi_2 A1 A2 A3 A4 B1 VGND VNB VPB VPWR Y
 M1000 a_103_367# A1 VPWR VPB phighvt w=1.26e+06u l=150000u
@@ -42,4 +57,3 @@
 M1019 a_788_69# A4 VGND VNB nshort w=840000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a41oi/sky130_fd_sc_lp__a41oi_4.spice b/cells/a41oi/sky130_fd_sc_lp__a41oi_4.spice
index 89c0f7c..1f80199 100644
--- a/cells/a41oi/sky130_fd_sc_lp__a41oi_4.spice
+++ b/cells/a41oi/sky130_fd_sc_lp__a41oi_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__a41oi_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__a41oi_4 A1 A2 A3 A4 B1 VGND VNB VPB VPWR Y
 M1000 a_30_367# A4 VPWR VPB phighvt w=1.26e+06u l=150000u
@@ -82,4 +97,3 @@
 M1039 Y B1 VGND VNB nshort w=840000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a41oi/sky130_fd_sc_lp__a41oi_lp.spice b/cells/a41oi/sky130_fd_sc_lp__a41oi_lp.spice
index 75b4c52..cb50e5d 100644
--- a/cells/a41oi/sky130_fd_sc_lp__a41oi_lp.spice
+++ b/cells/a41oi/sky130_fd_sc_lp__a41oi_lp.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__a41oi_lp.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__a41oi_lp A1 A2 A3 A4 B1 VGND VNB VPB VPWR Y
 M1000 Y A1 a_326_47# VNB nshort w=420000u l=150000u
@@ -24,4 +39,3 @@
 M1010 a_170_47# A4 VGND VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a41oi/sky130_fd_sc_lp__a41oi_m.spice b/cells/a41oi/sky130_fd_sc_lp__a41oi_m.spice
index 27390e0..239a9c7 100644
--- a/cells/a41oi/sky130_fd_sc_lp__a41oi_m.spice
+++ b/cells/a41oi/sky130_fd_sc_lp__a41oi_m.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__a41oi_m.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__a41oi_m A1 A2 A3 A4 B1 VGND VNB VPB VPWR Y
 M1000 a_186_531# A4 VPWR VPB phighvt w=420000u l=150000u
@@ -22,4 +37,3 @@
 M1009 a_186_531# A2 VPWR VPB phighvt w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/and2/sky130_fd_sc_lp__and2_0.spice b/cells/and2/sky130_fd_sc_lp__and2_0.spice
index 165e36b..f35b82a 100644
--- a/cells/and2/sky130_fd_sc_lp__and2_0.spice
+++ b/cells/and2/sky130_fd_sc_lp__and2_0.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__and2_0.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__and2_0 A B VGND VNB VPB VPWR X
 M1000 a_63_47# A VPWR VPB phighvt w=420000u l=150000u
@@ -14,4 +29,3 @@
 M1005 VPWR B a_63_47# VPB phighvt w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/and2/sky130_fd_sc_lp__and2_1.spice b/cells/and2/sky130_fd_sc_lp__and2_1.spice
index 71ff829..ba41b1e 100644
--- a/cells/and2/sky130_fd_sc_lp__and2_1.spice
+++ b/cells/and2/sky130_fd_sc_lp__and2_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__and2_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__and2_1 A B VGND VNB VPB VPWR X
 M1000 a_92_131# A VPWR VPB phighvt w=420000u l=150000u
@@ -14,4 +29,3 @@
 M1005 a_175_131# A a_92_131# VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=1.113e+11p ps=1.37e+06u
 .ends
-
diff --git a/cells/and2/sky130_fd_sc_lp__and2_2.spice b/cells/and2/sky130_fd_sc_lp__and2_2.spice
index f2c2bea..b979695 100644
--- a/cells/and2/sky130_fd_sc_lp__and2_2.spice
+++ b/cells/and2/sky130_fd_sc_lp__and2_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__and2_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__and2_2 A B VGND VNB VPB VPWR X
 M1000 VPWR B a_46_47# VPB phighvt w=420000u l=150000u
@@ -18,4 +33,3 @@
 M1007 VGND B a_129_47# VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/and2/sky130_fd_sc_lp__and2_4.spice b/cells/and2/sky130_fd_sc_lp__and2_4.spice
index f72e693..a1fa707 100644
--- a/cells/and2/sky130_fd_sc_lp__and2_4.spice
+++ b/cells/and2/sky130_fd_sc_lp__and2_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__and2_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__and2_4 A B VGND VNB VPB VPWR X
 M1000 VGND B a_110_47# VNB nshort w=840000u l=150000u
@@ -26,4 +41,3 @@
 M1011 a_27_47# A VPWR VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/and2/sky130_fd_sc_lp__and2_lp.spice b/cells/and2/sky130_fd_sc_lp__and2_lp.spice
index 6ba3001..f2907a1 100644
--- a/cells/and2/sky130_fd_sc_lp__and2_lp.spice
+++ b/cells/and2/sky130_fd_sc_lp__and2_lp.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__and2_lp.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__and2_lp A B VGND VNB VPB VPWR X
 M1000 a_494_92# a_213_468# VGND VNB nshort w=420000u l=150000u
@@ -22,4 +37,3 @@
 M1009 a_457_468# a_213_468# VPWR VPB phighvt w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/and2/sky130_fd_sc_lp__and2_lp2.spice b/cells/and2/sky130_fd_sc_lp__and2_lp2.spice
index 95a6e03..78a4113 100644
--- a/cells/and2/sky130_fd_sc_lp__and2_lp2.spice
+++ b/cells/and2/sky130_fd_sc_lp__and2_lp2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__and2_lp2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__and2_lp2 A B VGND VNB VPB VPWR X
 M1000 VPWR a_99_21# X VPB phighvt w=1e+06u l=250000u
@@ -16,4 +31,3 @@
 M1006 VGND a_99_21# a_129_47# VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/and2/sky130_fd_sc_lp__and2_m.spice b/cells/and2/sky130_fd_sc_lp__and2_m.spice
index 8df34ee..62fe83b 100644
--- a/cells/and2/sky130_fd_sc_lp__and2_m.spice
+++ b/cells/and2/sky130_fd_sc_lp__and2_m.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__and2_m.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__and2_m A B VGND VNB VPB VPWR X
 M1000 X a_34_141# VPWR VPB phighvt w=420000u l=150000u
@@ -14,4 +29,3 @@
 M1005 VPWR B a_34_141# VPB phighvt w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/and2b/sky130_fd_sc_lp__and2b_1.spice b/cells/and2b/sky130_fd_sc_lp__and2b_1.spice
index 133a5b1..9d4aacf 100644
--- a/cells/and2b/sky130_fd_sc_lp__and2b_1.spice
+++ b/cells/and2b/sky130_fd_sc_lp__and2b_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__and2b_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__and2b_1 A_N B VGND VNB VPB VPWR X
 M1000 a_217_131# a_27_47# VPWR VPB phighvt w=420000u l=150000u
@@ -18,4 +33,3 @@
 M1007 VPWR A_N a_27_47# VPB phighvt w=420000u l=150000u
 +  ad=0p pd=0u as=1.113e+11p ps=1.37e+06u
 .ends
-
diff --git a/cells/and2b/sky130_fd_sc_lp__and2b_2.spice b/cells/and2b/sky130_fd_sc_lp__and2b_2.spice
index 2559dd8..bc13bbe 100644
--- a/cells/and2b/sky130_fd_sc_lp__and2b_2.spice
+++ b/cells/and2b/sky130_fd_sc_lp__and2b_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__and2b_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__and2b_2 A_N B VGND VNB VPB VPWR X
 M1000 VPWR a_186_239# X VPB phighvt w=1.26e+06u l=150000u
@@ -22,4 +37,3 @@
 M1009 a_455_133# B VGND VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/and2b/sky130_fd_sc_lp__and2b_4.spice b/cells/and2b/sky130_fd_sc_lp__and2b_4.spice
index 97d616c..7f2cda1 100644
--- a/cells/and2b/sky130_fd_sc_lp__and2b_4.spice
+++ b/cells/and2b/sky130_fd_sc_lp__and2b_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__and2b_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__and2b_4 A_N B VGND VNB VPB VPWR X
 M1000 X a_213_23# VPWR VPB phighvt w=1.26e+06u l=150000u
@@ -30,4 +45,3 @@
 M1013 X a_213_23# VPWR VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/and2b/sky130_fd_sc_lp__and2b_lp.spice b/cells/and2b/sky130_fd_sc_lp__and2b_lp.spice
index d65f16b..a451476 100644
--- a/cells/and2b/sky130_fd_sc_lp__and2b_lp.spice
+++ b/cells/and2b/sky130_fd_sc_lp__and2b_lp.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__and2b_lp.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__and2b_lp A_N B VGND VNB VPB VPWR X
 M1000 a_108_127# B VPWR VPB phighvt w=1e+06u l=250000u
@@ -22,4 +37,3 @@
 M1009 VPWR a_378_159# a_108_127# VPB phighvt w=1e+06u l=250000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/and2b/sky130_fd_sc_lp__and2b_m.spice b/cells/and2b/sky130_fd_sc_lp__and2b_m.spice
index 41edbd8..1f9000c 100644
--- a/cells/and2b/sky130_fd_sc_lp__and2b_m.spice
+++ b/cells/and2b/sky130_fd_sc_lp__and2b_m.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__and2b_m.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__and2b_m A_N B VGND VNB VPB VPWR X
 M1000 VPWR A_N a_35_70# VPB phighvt w=420000u l=150000u
@@ -18,4 +33,3 @@
 M1007 VGND A_N a_35_70# VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=1.113e+11p ps=1.37e+06u
 .ends
-
diff --git a/cells/and3/sky130_fd_sc_lp__and3_0.spice b/cells/and3/sky130_fd_sc_lp__and3_0.spice
index 1209612..437035a 100644
--- a/cells/and3/sky130_fd_sc_lp__and3_0.spice
+++ b/cells/and3/sky130_fd_sc_lp__and3_0.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__and3_0.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__and3_0 A B C VGND VNB VPB VPWR X
 M1000 VPWR C a_68_65# VPB phighvt w=420000u l=150000u
@@ -18,4 +33,3 @@
 M1007 VPWR A a_68_65# VPB phighvt w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/and3/sky130_fd_sc_lp__and3_1.spice b/cells/and3/sky130_fd_sc_lp__and3_1.spice
index 7c7be6c..21ba8c0 100644
--- a/cells/and3/sky130_fd_sc_lp__and3_1.spice
+++ b/cells/and3/sky130_fd_sc_lp__and3_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__and3_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__and3_1 A B C VGND VNB VPB VPWR X
 M1000 VPWR C a_61_367# VPB phighvt w=420000u l=150000u
@@ -18,4 +33,3 @@
 M1007 a_61_367# B VPWR VPB phighvt w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/and3/sky130_fd_sc_lp__and3_2.spice b/cells/and3/sky130_fd_sc_lp__and3_2.spice
index d217add..68130c5 100644
--- a/cells/and3/sky130_fd_sc_lp__and3_2.spice
+++ b/cells/and3/sky130_fd_sc_lp__and3_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__and3_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__and3_2 A B C VGND VNB VPB VPWR X
 M1000 VPWR A a_27_385# VPB phighvt w=420000u l=150000u
@@ -22,4 +37,3 @@
 M1009 VGND a_27_385# X VNB nshort w=840000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/and3/sky130_fd_sc_lp__and3_4.spice b/cells/and3/sky130_fd_sc_lp__and3_4.spice
index bdfc66c..616e89e 100644
--- a/cells/and3/sky130_fd_sc_lp__and3_4.spice
+++ b/cells/and3/sky130_fd_sc_lp__and3_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__and3_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__and3_4 A B C VGND VNB VPB VPWR X
 M1000 VPWR A a_77_47# VPB phighvt w=1.26e+06u l=150000u
@@ -30,4 +45,3 @@
 M1013 VGND a_77_47# X VNB nshort w=840000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/and3/sky130_fd_sc_lp__and3_lp.spice b/cells/and3/sky130_fd_sc_lp__and3_lp.spice
index 980c7f2..c25d662 100644
--- a/cells/and3/sky130_fd_sc_lp__and3_lp.spice
+++ b/cells/and3/sky130_fd_sc_lp__and3_lp.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__and3_lp.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__and3_lp A B C VGND VNB VPB VPWR X
 M1000 a_38_416# B VPWR VPB phighvt w=1e+06u l=250000u
@@ -20,4 +35,3 @@
 M1008 VPWR C a_38_416# VPB phighvt w=1e+06u l=250000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/and3/sky130_fd_sc_lp__and3_m.spice b/cells/and3/sky130_fd_sc_lp__and3_m.spice
index d387494..2fbeb12 100644
--- a/cells/and3/sky130_fd_sc_lp__and3_m.spice
+++ b/cells/and3/sky130_fd_sc_lp__and3_m.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__and3_m.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__and3_m A B C VGND VNB VPB VPWR X
 M1000 a_51_47# B VPWR VPB phighvt w=420000u l=150000u
@@ -18,4 +33,3 @@
 M1007 X a_51_47# VGND VNB nshort w=420000u l=150000u
 +  ad=1.113e+11p pd=1.37e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/and3b/sky130_fd_sc_lp__and3b_1.spice b/cells/and3b/sky130_fd_sc_lp__and3b_1.spice
index 4cb1911..83e669b 100644
--- a/cells/and3b/sky130_fd_sc_lp__and3b_1.spice
+++ b/cells/and3b/sky130_fd_sc_lp__and3b_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__and3b_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__and3b_1 A_N B C VGND VNB VPB VPWR X
 M1000 X a_185_367# VPWR VPB phighvt w=1.26e+06u l=150000u
@@ -22,4 +37,3 @@
 M1009 VGND C a_376_47# VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/and3b/sky130_fd_sc_lp__and3b_2.spice b/cells/and3b/sky130_fd_sc_lp__and3b_2.spice
index 663e8bf..5aa2840 100644
--- a/cells/and3b/sky130_fd_sc_lp__and3b_2.spice
+++ b/cells/and3b/sky130_fd_sc_lp__and3b_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__and3b_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__and3b_2 A_N B C VGND VNB VPB VPWR X
 M1000 a_204_27# C VPWR VPB phighvt w=420000u l=150000u
@@ -26,4 +41,3 @@
 M1011 X a_204_27# VPWR VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/and3b/sky130_fd_sc_lp__and3b_4.spice b/cells/and3b/sky130_fd_sc_lp__and3b_4.spice
index f961d64..9753447 100644
--- a/cells/and3b/sky130_fd_sc_lp__and3b_4.spice
+++ b/cells/and3b/sky130_fd_sc_lp__and3b_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__and3b_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__and3b_4 A_N B C VGND VNB VPB VPWR X
 M1000 X a_242_23# VPWR VPB phighvt w=1.26e+06u l=150000u
@@ -34,4 +49,3 @@
 M1015 VGND A_N a_49_133# VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=1.197e+11p ps=1.41e+06u
 .ends
-
diff --git a/cells/and3b/sky130_fd_sc_lp__and3b_lp.spice b/cells/and3b/sky130_fd_sc_lp__and3b_lp.spice
index 4fe2a71..5fc8b28 100644
--- a/cells/and3b/sky130_fd_sc_lp__and3b_lp.spice
+++ b/cells/and3b/sky130_fd_sc_lp__and3b_lp.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__and3b_lp.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__and3b_lp A_N B C VGND VNB VPB VPWR X
 M1000 a_666_57# a_248_409# VGND VNB nshort w=420000u l=150000u
@@ -26,4 +41,3 @@
 M1011 a_137_408# A_N a_114_57# VNB nshort w=420000u l=150000u
 +  ad=1.197e+11p pd=1.41e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/and3b/sky130_fd_sc_lp__and3b_m.spice b/cells/and3b/sky130_fd_sc_lp__and3b_m.spice
index 06b7a0a..0441a77 100644
--- a/cells/and3b/sky130_fd_sc_lp__and3b_m.spice
+++ b/cells/and3b/sky130_fd_sc_lp__and3b_m.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__and3b_m.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__and3b_m A_N B C VGND VNB VPB VPWR X
 M1000 a_220_53# B VPWR VPB phighvt w=420000u l=150000u
@@ -22,4 +37,3 @@
 M1009 X a_220_53# VGND VNB nshort w=420000u l=150000u
 +  ad=1.113e+11p pd=1.37e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/and4/sky130_fd_sc_lp__and4_0.spice b/cells/and4/sky130_fd_sc_lp__and4_0.spice
index 0b60d06..0e8aafa 100644
--- a/cells/and4/sky130_fd_sc_lp__and4_0.spice
+++ b/cells/and4/sky130_fd_sc_lp__and4_0.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__and4_0.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__and4_0 A B C D VGND VNB VPB VPWR X
 M1000 VPWR B a_84_58# VPB phighvt w=420000u l=150000u
@@ -22,4 +37,3 @@
 M1009 a_84_58# A VPWR VPB phighvt w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/and4/sky130_fd_sc_lp__and4_1.spice b/cells/and4/sky130_fd_sc_lp__and4_1.spice
index 2bd7a69..c297362 100644
--- a/cells/and4/sky130_fd_sc_lp__and4_1.spice
+++ b/cells/and4/sky130_fd_sc_lp__and4_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__and4_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__and4_1 A B C D VGND VNB VPB VPWR X
 M1000 VGND D a_327_47# VNB nshort w=420000u l=150000u
@@ -22,4 +37,3 @@
 M1009 a_40_47# C VPWR VPB phighvt w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/and4/sky130_fd_sc_lp__and4_2.spice b/cells/and4/sky130_fd_sc_lp__and4_2.spice
index 8cb9c88..42f8c6e 100644
--- a/cells/and4/sky130_fd_sc_lp__and4_2.spice
+++ b/cells/and4/sky130_fd_sc_lp__and4_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__and4_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__and4_2 A B C D VGND VNB VPB VPWR X
 M1000 VPWR D a_72_49# VPB phighvt w=420000u l=150000u
@@ -26,4 +41,3 @@
 M1011 VPWR a_72_49# X VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/and4/sky130_fd_sc_lp__and4_4.spice b/cells/and4/sky130_fd_sc_lp__and4_4.spice
index b0ee104..024c6f1 100644
--- a/cells/and4/sky130_fd_sc_lp__and4_4.spice
+++ b/cells/and4/sky130_fd_sc_lp__and4_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__and4_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__and4_4 A B C D VGND VNB VPB VPWR X
 M1000 a_58_47# A VPWR VPB phighvt w=1.26e+06u l=150000u
@@ -34,4 +49,3 @@
 M1015 VGND D a_321_47# VNB nshort w=840000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/and4/sky130_fd_sc_lp__and4_lp.spice b/cells/and4/sky130_fd_sc_lp__and4_lp.spice
index 1a6b61a..a8521a6 100644
--- a/cells/and4/sky130_fd_sc_lp__and4_lp.spice
+++ b/cells/and4/sky130_fd_sc_lp__and4_lp.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__and4_lp.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__and4_lp A B C D VGND VNB VPB VPWR X
 M1000 a_230_55# D VGND VNB nshort w=420000u l=150000u
@@ -34,4 +49,3 @@
 M1015 VPWR C a_272_485# VPB phighvt w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/and4/sky130_fd_sc_lp__and4_lp2.spice b/cells/and4/sky130_fd_sc_lp__and4_lp2.spice
index 9e941c3..e6c1164 100644
--- a/cells/and4/sky130_fd_sc_lp__and4_lp2.spice
+++ b/cells/and4/sky130_fd_sc_lp__and4_lp2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__and4_lp2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__and4_lp2 A B C D VGND VNB VPB VPWR X
 M1000 a_84_21# A a_450_47# VNB nshort w=420000u l=150000u
@@ -24,4 +39,3 @@
 M1010 VPWR a_84_21# X VPB phighvt w=1e+06u l=250000u
 +  ad=0p pd=0u as=2.85e+11p ps=2.57e+06u
 .ends
-
diff --git a/cells/and4/sky130_fd_sc_lp__and4_m.spice b/cells/and4/sky130_fd_sc_lp__and4_m.spice
index cc06d69..5d5c8e5 100644
--- a/cells/and4/sky130_fd_sc_lp__and4_m.spice
+++ b/cells/and4/sky130_fd_sc_lp__and4_m.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__and4_m.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__and4_m A B C D VGND VNB VPB VPWR X
 M1000 a_316_47# C a_208_47# VNB nshort w=420000u l=150000u
@@ -22,4 +37,3 @@
 M1009 a_53_47# C VPWR VPB phighvt w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/and4b/sky130_fd_sc_lp__and4b_1.spice b/cells/and4b/sky130_fd_sc_lp__and4b_1.spice
index 15ff840..6da2ece 100644
--- a/cells/and4b/sky130_fd_sc_lp__and4b_1.spice
+++ b/cells/and4b/sky130_fd_sc_lp__and4b_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__and4b_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__and4b_1 A_N B C D VGND VNB VPB VPWR X
 M1000 X a_215_367# VPWR VPB phighvt w=1.26e+06u l=150000u
@@ -26,4 +41,3 @@
 M1011 VGND D a_444_47# VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/and4b/sky130_fd_sc_lp__and4b_2.spice b/cells/and4b/sky130_fd_sc_lp__and4b_2.spice
index 710202e..d9deb5a 100644
--- a/cells/and4b/sky130_fd_sc_lp__and4b_2.spice
+++ b/cells/and4b/sky130_fd_sc_lp__and4b_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__and4b_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__and4b_2 A_N B C D VGND VNB VPB VPWR X
 M1000 VPWR a_222_375# X VPB phighvt w=1.26e+06u l=150000u
@@ -30,4 +45,3 @@
 M1013 VGND D a_450_125# VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/and4b/sky130_fd_sc_lp__and4b_4.spice b/cells/and4b/sky130_fd_sc_lp__and4b_4.spice
index 0d4072f..30bdc2a 100644
--- a/cells/and4b/sky130_fd_sc_lp__and4b_4.spice
+++ b/cells/and4b/sky130_fd_sc_lp__and4b_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__and4b_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__and4b_4 A_N B C D VGND VNB VPB VPWR X
 M1000 X a_242_23# VPWR VPB phighvt w=1.26e+06u l=150000u
@@ -38,4 +53,3 @@
 M1017 VGND A_N a_49_133# VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=1.197e+11p ps=1.41e+06u
 .ends
-
diff --git a/cells/and4b/sky130_fd_sc_lp__and4b_lp.spice b/cells/and4b/sky130_fd_sc_lp__and4b_lp.spice
index f9a65fd..05e3717 100644
--- a/cells/and4b/sky130_fd_sc_lp__and4b_lp.spice
+++ b/cells/and4b/sky130_fd_sc_lp__and4b_lp.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__and4b_lp.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__and4b_lp A_N B C D VGND VNB VPB VPWR X
 M1000 a_276_47# D VGND VNB nshort w=420000u l=150000u
@@ -30,4 +45,3 @@
 M1013 a_84_21# D VPWR VPB phighvt w=1e+06u l=250000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/and4b/sky130_fd_sc_lp__and4b_m.spice b/cells/and4b/sky130_fd_sc_lp__and4b_m.spice
index 49391cf..83c7a54 100644
--- a/cells/and4b/sky130_fd_sc_lp__and4b_m.spice
+++ b/cells/and4b/sky130_fd_sc_lp__and4b_m.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__and4b_m.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__and4b_m A_N B C D VGND VNB VPB VPWR X
 M1000 X a_240_73# VPWR VPB phighvt w=420000u l=150000u
@@ -26,4 +41,3 @@
 M1011 X a_240_73# VGND VNB nshort w=420000u l=150000u
 +  ad=1.113e+11p pd=1.37e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/and4bb/sky130_fd_sc_lp__and4bb_1.spice b/cells/and4bb/sky130_fd_sc_lp__and4bb_1.spice
index ef88af3..24beb05 100644
--- a/cells/and4bb/sky130_fd_sc_lp__and4bb_1.spice
+++ b/cells/and4bb/sky130_fd_sc_lp__and4bb_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__and4bb_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__and4bb_1 A_N B_N C D VGND VNB VPB VPWR X
 M1000 a_196_51# B_N VGND VNB nshort w=420000u l=150000u
@@ -30,4 +45,3 @@
 M1013 a_427_131# a_27_51# a_344_131# VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=1.113e+11p ps=1.37e+06u
 .ends
-
diff --git a/cells/and4bb/sky130_fd_sc_lp__and4bb_2.spice b/cells/and4bb/sky130_fd_sc_lp__and4bb_2.spice
index 420b2ec..a6b1a5d 100644
--- a/cells/and4bb/sky130_fd_sc_lp__and4bb_2.spice
+++ b/cells/and4bb/sky130_fd_sc_lp__and4bb_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__and4bb_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__and4bb_2 A_N B_N C D VGND VNB VPB VPWR X
 M1000 VPWR D a_185_23# VPB phighvt w=420000u l=150000u
@@ -34,4 +49,3 @@
 M1015 a_516_125# a_27_133# a_185_23# VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=1.113e+11p ps=1.37e+06u
 .ends
-
diff --git a/cells/and4bb/sky130_fd_sc_lp__and4bb_4.spice b/cells/and4bb/sky130_fd_sc_lp__and4bb_4.spice
index c23fc86..10b9abe 100644
--- a/cells/and4bb/sky130_fd_sc_lp__and4bb_4.spice
+++ b/cells/and4bb/sky130_fd_sc_lp__and4bb_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__and4bb_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__and4bb_4 A_N B_N C D VGND VNB VPB VPWR X
 M1000 VPWR C a_254_21# VPB phighvt w=1.26e+06u l=150000u
@@ -42,4 +57,3 @@
 M1019 a_254_21# a_929_21# a_851_47# VNB nshort w=840000u l=150000u
 +  ad=2.226e+11p pd=2.21e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/and4bb/sky130_fd_sc_lp__and4bb_lp.spice b/cells/and4bb/sky130_fd_sc_lp__and4bb_lp.spice
index 0607f4a..0fa78b9 100644
--- a/cells/and4bb/sky130_fd_sc_lp__and4bb_lp.spice
+++ b/cells/and4bb/sky130_fd_sc_lp__and4bb_lp.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__and4bb_lp.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__and4bb_lp A_N B_N C D VGND VNB VPB VPWR X
 M1000 X a_461_47# a_896_47# VNB nshort w=420000u l=150000u
@@ -36,4 +51,3 @@
 M1016 a_896_47# a_461_47# VGND VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/and4bb/sky130_fd_sc_lp__and4bb_m.spice b/cells/and4bb/sky130_fd_sc_lp__and4bb_m.spice
index 55c71ae..9b34825 100644
--- a/cells/and4bb/sky130_fd_sc_lp__and4bb_m.spice
+++ b/cells/and4bb/sky130_fd_sc_lp__and4bb_m.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__and4bb_m.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__and4bb_m A_N B_N C D VGND VNB VPB VPWR X
 M1000 VGND A_N a_54_55# VNB nshort w=420000u l=150000u
@@ -30,4 +45,3 @@
 M1013 a_487_125# a_223_55# a_415_125# VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/buf/sky130_fd_sc_lp__buf_0.spice b/cells/buf/sky130_fd_sc_lp__buf_0.spice
index 22c3b35..49faa60 100644
--- a/cells/buf/sky130_fd_sc_lp__buf_0.spice
+++ b/cells/buf/sky130_fd_sc_lp__buf_0.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__buf_0.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__buf_0 A VGND VNB VPB VPWR X
 M1000 a_70_157# A VGND VNB nshort w=420000u l=150000u
@@ -10,4 +25,3 @@
 M1003 VGND a_70_157# X VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=1.113e+11p ps=1.37e+06u
 .ends
-
diff --git a/cells/buf/sky130_fd_sc_lp__buf_1.spice b/cells/buf/sky130_fd_sc_lp__buf_1.spice
index 1d7d53a..0d7529c 100644
--- a/cells/buf/sky130_fd_sc_lp__buf_1.spice
+++ b/cells/buf/sky130_fd_sc_lp__buf_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__buf_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__buf_1 A VGND VNB VPB VPWR X
 M1000 a_70_237# A VPWR VPB phighvt w=640000u l=150000u
@@ -10,4 +25,3 @@
 M1003 VPWR a_70_237# X VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=3.339e+11p ps=3.05e+06u
 .ends
-
diff --git a/cells/buf/sky130_fd_sc_lp__buf_16.spice b/cells/buf/sky130_fd_sc_lp__buf_16.spice
index 2cb7bc9..320e718 100644
--- a/cells/buf/sky130_fd_sc_lp__buf_16.spice
+++ b/cells/buf/sky130_fd_sc_lp__buf_16.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__buf_16.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__buf_16 A VGND VNB VPB VPWR X
 M1000 a_130_47# A VPWR VPB phighvt w=1.26e+06u l=150000u
@@ -90,4 +105,3 @@
 M1043 X a_130_47# VGND VNB nshort w=840000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/buf/sky130_fd_sc_lp__buf_2.spice b/cells/buf/sky130_fd_sc_lp__buf_2.spice
index aac5021..5dac2de 100644
--- a/cells/buf/sky130_fd_sc_lp__buf_2.spice
+++ b/cells/buf/sky130_fd_sc_lp__buf_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__buf_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__buf_2 A VGND VNB VPB VPWR X
 M1000 X a_90_21# VGND VNB nshort w=840000u l=150000u
@@ -14,4 +29,3 @@
 M1005 VPWR a_90_21# X VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/buf/sky130_fd_sc_lp__buf_4.spice b/cells/buf/sky130_fd_sc_lp__buf_4.spice
index 18842e8..fa5ce08 100644
--- a/cells/buf/sky130_fd_sc_lp__buf_4.spice
+++ b/cells/buf/sky130_fd_sc_lp__buf_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__buf_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__buf_4 A VGND VNB VPB VPWR X
 M1000 a_122_23# A VPWR VPB phighvt w=1.26e+06u l=150000u
@@ -22,4 +37,3 @@
 M1009 X a_122_23# VPWR VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/buf/sky130_fd_sc_lp__buf_8.spice b/cells/buf/sky130_fd_sc_lp__buf_8.spice
index bae359e..f637a92 100644
--- a/cells/buf/sky130_fd_sc_lp__buf_8.spice
+++ b/cells/buf/sky130_fd_sc_lp__buf_8.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__buf_8.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__buf_8 A VGND VNB VPB VPWR X
 M1000 VPWR A a_27_47# VPB phighvt w=1.26e+06u l=150000u
@@ -46,4 +61,3 @@
 M1021 VGND A a_27_47# VNB nshort w=840000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/buf/sky130_fd_sc_lp__buf_lp.spice b/cells/buf/sky130_fd_sc_lp__buf_lp.spice
index ad5eec2..ff4f447 100644
--- a/cells/buf/sky130_fd_sc_lp__buf_lp.spice
+++ b/cells/buf/sky130_fd_sc_lp__buf_lp.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__buf_lp.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__buf_lp A VGND VNB VPB VPWR X
 M1000 a_124_57# a_94_31# X VNB nshort w=420000u l=150000u
@@ -14,4 +29,3 @@
 M1005 VGND a_94_31# a_124_57# VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/buf/sky130_fd_sc_lp__buf_m.spice b/cells/buf/sky130_fd_sc_lp__buf_m.spice
index 8edd12b..52fc167 100644
--- a/cells/buf/sky130_fd_sc_lp__buf_m.spice
+++ b/cells/buf/sky130_fd_sc_lp__buf_m.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__buf_m.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__buf_m A VGND VNB VPB VPWR X
 M1000 VGND a_47_178# X VNB nshort w=420000u l=150000u
@@ -10,4 +25,3 @@
 M1003 VPWR a_47_178# X VPB phighvt w=420000u l=150000u
 +  ad=0p pd=0u as=1.113e+11p ps=1.37e+06u
 .ends
-
diff --git a/cells/bufbuf/sky130_fd_sc_lp__bufbuf_16.spice b/cells/bufbuf/sky130_fd_sc_lp__bufbuf_16.spice
index 617d60a..15c1ee1 100644
--- a/cells/bufbuf/sky130_fd_sc_lp__bufbuf_16.spice
+++ b/cells/bufbuf/sky130_fd_sc_lp__bufbuf_16.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__bufbuf_16.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__bufbuf_16 A VGND VNB VPB VPWR X
 M1000 X a_610_47# VPWR VPB phighvt w=1.26e+06u l=150000u
@@ -106,4 +121,3 @@
 M1051 VPWR A a_27_49# VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=3.339e+11p ps=3.05e+06u
 .ends
-
diff --git a/cells/bufbuf/sky130_fd_sc_lp__bufbuf_8.spice b/cells/bufbuf/sky130_fd_sc_lp__bufbuf_8.spice
index ee0b752..001c5c1 100644
--- a/cells/bufbuf/sky130_fd_sc_lp__bufbuf_8.spice
+++ b/cells/bufbuf/sky130_fd_sc_lp__bufbuf_8.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__bufbuf_8.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__bufbuf_8 A VGND VNB VPB VPWR X
 M1000 a_117_265# a_837_23# VPWR VPB phighvt w=1.26e+06u l=150000u
@@ -54,4 +69,3 @@
 M1025 a_117_265# a_837_23# VPWR VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/bufinv/sky130_fd_sc_lp__bufinv_16.spice b/cells/bufinv/sky130_fd_sc_lp__bufinv_16.spice
index 82c7b81..268251a 100644
--- a/cells/bufinv/sky130_fd_sc_lp__bufinv_16.spice
+++ b/cells/bufinv/sky130_fd_sc_lp__bufinv_16.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__bufinv_16.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__bufinv_16 A VGND VNB VPB VPWR Y
 M1000 Y a_413_49# VPWR VPB phighvt w=1.26e+06u l=150000u
@@ -102,4 +117,3 @@
 M1049 VPWR a_63_49# a_413_49# VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/bufinv/sky130_fd_sc_lp__bufinv_8.spice b/cells/bufinv/sky130_fd_sc_lp__bufinv_8.spice
index 71a5ba1..d6de96a 100644
--- a/cells/bufinv/sky130_fd_sc_lp__bufinv_8.spice
+++ b/cells/bufinv/sky130_fd_sc_lp__bufinv_8.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__bufinv_8.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__bufinv_8 A VGND VNB VPB VPWR Y
 M1000 Y a_82_23# VPWR VPB phighvt w=1.26e+06u l=150000u
@@ -50,4 +65,3 @@
 M1023 VGND a_82_23# Y VNB nshort w=840000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/bufkapwr/sky130_fd_sc_lp__bufkapwr_1.spice b/cells/bufkapwr/sky130_fd_sc_lp__bufkapwr_1.spice
index 9953bf1..19ed232 100644
--- a/cells/bufkapwr/sky130_fd_sc_lp__bufkapwr_1.spice
+++ b/cells/bufkapwr/sky130_fd_sc_lp__bufkapwr_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__bufkapwr_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__bufkapwr_1 A KAPWR VGND VNB VPB VPWR X
 M1000 a_69_161# A KAPWR VPB phighvt w=1.26e+06u l=150000u
@@ -10,4 +25,3 @@
 M1003 KAPWR a_69_161# X VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=3.339e+11p ps=3.05e+06u
 .ends
-
diff --git a/cells/bufkapwr/sky130_fd_sc_lp__bufkapwr_2.spice b/cells/bufkapwr/sky130_fd_sc_lp__bufkapwr_2.spice
index 7c50b6b..4f2c2d9 100644
--- a/cells/bufkapwr/sky130_fd_sc_lp__bufkapwr_2.spice
+++ b/cells/bufkapwr/sky130_fd_sc_lp__bufkapwr_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__bufkapwr_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__bufkapwr_2 A KAPWR VGND VNB VPB VPWR X
 M1000 KAPWR a_27_47# X VPB phighvt w=1.26e+06u l=150000u
@@ -14,4 +29,3 @@
 M1005 KAPWR A a_27_47# VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=3.339e+11p ps=3.05e+06u
 .ends
-
diff --git a/cells/bufkapwr/sky130_fd_sc_lp__bufkapwr_4.spice b/cells/bufkapwr/sky130_fd_sc_lp__bufkapwr_4.spice
index 0cfe896..9d25690 100644
--- a/cells/bufkapwr/sky130_fd_sc_lp__bufkapwr_4.spice
+++ b/cells/bufkapwr/sky130_fd_sc_lp__bufkapwr_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__bufkapwr_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__bufkapwr_4 A KAPWR VGND VNB VPB VPWR X
 M1000 KAPWR a_27_47# X VPB phighvt w=1.26e+06u l=150000u
@@ -22,4 +37,3 @@
 M1009 KAPWR A a_27_47# VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=3.339e+11p ps=3.05e+06u
 .ends
-
diff --git a/cells/bufkapwr/sky130_fd_sc_lp__bufkapwr_8.spice b/cells/bufkapwr/sky130_fd_sc_lp__bufkapwr_8.spice
index f07c893..6581171 100644
--- a/cells/bufkapwr/sky130_fd_sc_lp__bufkapwr_8.spice
+++ b/cells/bufkapwr/sky130_fd_sc_lp__bufkapwr_8.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__bufkapwr_8.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__bufkapwr_8 A KAPWR VGND VNB VPB VPWR X
 M1000 X a_110_47# KAPWR VPB phighvt w=1.26e+06u l=150000u
@@ -42,4 +57,3 @@
 M1019 X a_110_47# VGND VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/buflp/sky130_fd_sc_lp__buflp_0.spice b/cells/buflp/sky130_fd_sc_lp__buflp_0.spice
index f0a9950..4a4a564 100644
--- a/cells/buflp/sky130_fd_sc_lp__buflp_0.spice
+++ b/cells/buflp/sky130_fd_sc_lp__buflp_0.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__buflp_0.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__buflp_0 A VGND VNB VPB VPWR X
 M1000 VPWR A a_128_490# VPB phighvt w=420000u l=150000u
@@ -18,4 +33,3 @@
 M1007 a_123_120# A a_36_120# VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=1.197e+11p ps=1.41e+06u
 .ends
-
diff --git a/cells/buflp/sky130_fd_sc_lp__buflp_1.spice b/cells/buflp/sky130_fd_sc_lp__buflp_1.spice
index 6417760..27a03d6 100644
--- a/cells/buflp/sky130_fd_sc_lp__buflp_1.spice
+++ b/cells/buflp/sky130_fd_sc_lp__buflp_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__buflp_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__buflp_1 A VGND VNB VPB VPWR X
 M1000 VGND a_86_21# a_116_47# VNB nshort w=840000u l=150000u
@@ -18,4 +33,3 @@
 M1007 a_308_403# A VPWR VPB phighvt w=640000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/buflp/sky130_fd_sc_lp__buflp_2.spice b/cells/buflp/sky130_fd_sc_lp__buflp_2.spice
index bee805b..85e97ed 100644
--- a/cells/buflp/sky130_fd_sc_lp__buflp_2.spice
+++ b/cells/buflp/sky130_fd_sc_lp__buflp_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__buflp_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__buflp_2 A VGND VNB VPB VPWR X
 M1000 a_128_367# a_98_21# X VPB phighvt w=1.26e+06u l=150000u
@@ -26,4 +41,3 @@
 M1011 a_98_21# A a_509_377# VPB phighvt w=640000u l=150000u
 +  ad=1.824e+11p pd=1.85e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/buflp/sky130_fd_sc_lp__buflp_4.spice b/cells/buflp/sky130_fd_sc_lp__buflp_4.spice
index 12887d3..38b85f7 100644
--- a/cells/buflp/sky130_fd_sc_lp__buflp_4.spice
+++ b/cells/buflp/sky130_fd_sc_lp__buflp_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__buflp_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__buflp_4 A VGND VNB VPB VPWR X
 M1000 VPWR a_84_21# a_114_367# VPB phighvt w=1.26e+06u l=150000u
@@ -42,4 +57,3 @@
 M1019 VPWR a_84_21# a_114_367# VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/buflp/sky130_fd_sc_lp__buflp_8.spice b/cells/buflp/sky130_fd_sc_lp__buflp_8.spice
index da3b0a4..327dfaf 100644
--- a/cells/buflp/sky130_fd_sc_lp__buflp_8.spice
+++ b/cells/buflp/sky130_fd_sc_lp__buflp_8.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__buflp_8.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__buflp_8 A VGND VNB VPB VPWR X
 M1000 a_114_47# A VGND VNB nshort w=840000u l=150000u
@@ -90,4 +105,3 @@
 M1043 a_644_47# a_27_47# VGND VNB nshort w=840000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/buflp/sky130_fd_sc_lp__buflp_m.spice b/cells/buflp/sky130_fd_sc_lp__buflp_m.spice
index 39dfde6..581cd18 100644
--- a/cells/buflp/sky130_fd_sc_lp__buflp_m.spice
+++ b/cells/buflp/sky130_fd_sc_lp__buflp_m.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__buflp_m.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__buflp_m A VGND VNB VPB VPWR X
 M1000 a_278_120# A VGND VNB nshort w=420000u l=150000u
@@ -18,4 +33,3 @@
 M1007 VPWR a_90_94# a_120_490# VPB phighvt w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/busdriver/sky130_fd_sc_lp__busdriver_20.spice b/cells/busdriver/sky130_fd_sc_lp__busdriver_20.spice
index 4630633..0419e10 100644
--- a/cells/busdriver/sky130_fd_sc_lp__busdriver_20.spice
+++ b/cells/busdriver/sky130_fd_sc_lp__busdriver_20.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__busdriver_20.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__busdriver_20 A TE_B VGND VNB VPB VPWR Z
 M1000 a_630_367# a_286_367# VPWR VPB phighvt w=1.26e+06u l=150000u
@@ -182,4 +197,3 @@
 M1089 a_286_367# a_114_47# VPWR VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/busdriver2/sky130_fd_sc_lp__busdriver2_20.spice b/cells/busdriver2/sky130_fd_sc_lp__busdriver2_20.spice
index 2eb8342..eb150b4 100644
--- a/cells/busdriver2/sky130_fd_sc_lp__busdriver2_20.spice
+++ b/cells/busdriver2/sky130_fd_sc_lp__busdriver2_20.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__busdriver2_20.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__busdriver2_20 A TE_B VGND VNB VPB VPWR Z
 M1000 Z a_1909_21# a_630_367# VPB pshort w=1.26e+06u l=150000u
@@ -182,4 +197,3 @@
 M1089 a_630_367# a_286_367# VPWR VPB pshort w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/busdrivernovlp/sky130_fd_sc_lp__busdrivernovlp_20.spice b/cells/busdrivernovlp/sky130_fd_sc_lp__busdrivernovlp_20.spice
index c321418..e4208b9 100644
--- a/cells/busdrivernovlp/sky130_fd_sc_lp__busdrivernovlp_20.spice
+++ b/cells/busdrivernovlp/sky130_fd_sc_lp__busdrivernovlp_20.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__busdrivernovlp_20.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__busdrivernovlp_20 A TE_B VGND VNB VPB VPWR Z
 M1000 a_658_367# a_381_85# a_726_47# VPB phighvt w=1.26e+06u l=150000u
@@ -122,4 +137,3 @@
 M1059 Z a_726_47# VGND VNB nshort w=640000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/busdrivernovlp2/sky130_fd_sc_lp__busdrivernovlp2_20.spice b/cells/busdrivernovlp2/sky130_fd_sc_lp__busdrivernovlp2_20.spice
index e64059d..e537953 100644
--- a/cells/busdrivernovlp2/sky130_fd_sc_lp__busdrivernovlp2_20.spice
+++ b/cells/busdrivernovlp2/sky130_fd_sc_lp__busdrivernovlp2_20.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__busdrivernovlp2_20.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__busdrivernovlp2_20 A TE_B VGND VNB VPB VPWR Z
 M1000 a_1238_47# a_726_47# a_1260_373# VPB pshort w=840000u l=150000u
@@ -122,4 +137,3 @@
 M1059 Z a_726_47# VGND VNB nshort w=640000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/busdrivernovlpsleep/sky130_fd_sc_lp__busdrivernovlpsleep_20.spice b/cells/busdrivernovlpsleep/sky130_fd_sc_lp__busdrivernovlpsleep_20.spice
index c942b37..2c829b6 100644
--- a/cells/busdrivernovlpsleep/sky130_fd_sc_lp__busdrivernovlpsleep_20.spice
+++ b/cells/busdrivernovlpsleep/sky130_fd_sc_lp__busdrivernovlpsleep_20.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__busdrivernovlpsleep_20.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__busdrivernovlpsleep_20 A SLEEP TE_B KAPWR VGND VNB VPB VPWR
 + Z
@@ -151,4 +166,3 @@
 M1073 VGND a_1486_47# Z VNB nshort w=640000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/bushold/sky130_fd_sc_lp__bushold_1.spice b/cells/bushold/sky130_fd_sc_lp__bushold_1.spice
index 50e0c74..0eb8843 100644
--- a/cells/bushold/sky130_fd_sc_lp__bushold_1.spice
+++ b/cells/bushold/sky130_fd_sc_lp__bushold_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__bushold_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__bushold_1 RESET VGND VNB VPB VPWR X
 M1000 VGND RESET a_89_535# VNB nshort w=420000u l=150000u
@@ -14,4 +29,3 @@
 M1005 a_89_535# X VGND VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/bushold0/sky130_fd_sc_lp__bushold0_1.spice b/cells/bushold0/sky130_fd_sc_lp__bushold0_1.spice
index 5bb78b1..ff60587 100644
--- a/cells/bushold0/sky130_fd_sc_lp__bushold0_1.spice
+++ b/cells/bushold0/sky130_fd_sc_lp__bushold0_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__bushold0_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__bushold0_1 RESET VGND VNB VPB VPWR X
 M1000 X RESET VGND VNB nshort w=420000u l=150000u
@@ -14,4 +29,3 @@
 M1005 VGND X a_27_535# VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=1.113e+11p ps=1.37e+06u
 .ends
-
diff --git a/cells/busreceiver/sky130_fd_sc_lp__busreceiver_0.spice b/cells/busreceiver/sky130_fd_sc_lp__busreceiver_0.spice
index 72617dd..8c8c35d 100644
--- a/cells/busreceiver/sky130_fd_sc_lp__busreceiver_0.spice
+++ b/cells/busreceiver/sky130_fd_sc_lp__busreceiver_0.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__busreceiver_0.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__busreceiver_0 A VGND VNB VPB VPWR X
 M1000 a_70_157# A VGND VNB nshort w=420000u l=150000u
@@ -10,4 +25,3 @@
 M1003 VGND a_70_157# X VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=1.113e+11p ps=1.37e+06u
 .ends
-
diff --git a/cells/busreceiver/sky130_fd_sc_lp__busreceiver_1.spice b/cells/busreceiver/sky130_fd_sc_lp__busreceiver_1.spice
index 0da08fb..cf7a898 100644
--- a/cells/busreceiver/sky130_fd_sc_lp__busreceiver_1.spice
+++ b/cells/busreceiver/sky130_fd_sc_lp__busreceiver_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__busreceiver_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__busreceiver_1 A VGND VNB VPB VPWR X
 M1000 a_70_237# A VPWR VPB phighvt w=640000u l=150000u
@@ -10,4 +25,3 @@
 M1003 VPWR a_70_237# X VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=3.339e+11p ps=3.05e+06u
 .ends
-
diff --git a/cells/busreceiver/sky130_fd_sc_lp__busreceiver_m.spice b/cells/busreceiver/sky130_fd_sc_lp__busreceiver_m.spice
index b21c98c..5edfd4e 100644
--- a/cells/busreceiver/sky130_fd_sc_lp__busreceiver_m.spice
+++ b/cells/busreceiver/sky130_fd_sc_lp__busreceiver_m.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__busreceiver_m.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__busreceiver_m A VGND VNB VPB VPWR X
 M1000 VGND a_47_178# X VNB nshort w=420000u l=150000u
@@ -10,4 +25,3 @@
 M1003 VPWR a_47_178# X VPB phighvt w=420000u l=150000u
 +  ad=0p pd=0u as=1.113e+11p ps=1.37e+06u
 .ends
-
diff --git a/cells/clkbuf/sky130_fd_sc_lp__clkbuf_0.spice b/cells/clkbuf/sky130_fd_sc_lp__clkbuf_0.spice
index 1abd547..43c18c4 100644
--- a/cells/clkbuf/sky130_fd_sc_lp__clkbuf_0.spice
+++ b/cells/clkbuf/sky130_fd_sc_lp__clkbuf_0.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__clkbuf_0.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__clkbuf_0 A VGND VNB VPB VPWR X
 M1000 a_70_157# A VGND VNB nshort w=420000u l=150000u
@@ -10,4 +25,3 @@
 M1003 a_70_157# A VPWR VPB phighvt w=640000u l=150000u
 +  ad=1.696e+11p pd=1.81e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/clkbuf/sky130_fd_sc_lp__clkbuf_1.spice b/cells/clkbuf/sky130_fd_sc_lp__clkbuf_1.spice
index f667549..1fbe445 100644
--- a/cells/clkbuf/sky130_fd_sc_lp__clkbuf_1.spice
+++ b/cells/clkbuf/sky130_fd_sc_lp__clkbuf_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__clkbuf_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__clkbuf_1 A VGND VNB VPB VPWR X
 M1000 a_69_161# A VPWR VPB phighvt w=1.26e+06u l=150000u
@@ -10,4 +25,3 @@
 M1003 VPWR a_69_161# X VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=3.339e+11p ps=3.05e+06u
 .ends
-
diff --git a/cells/clkbuf/sky130_fd_sc_lp__clkbuf_16.spice b/cells/clkbuf/sky130_fd_sc_lp__clkbuf_16.spice
index 46712dc..169b810 100644
--- a/cells/clkbuf/sky130_fd_sc_lp__clkbuf_16.spice
+++ b/cells/clkbuf/sky130_fd_sc_lp__clkbuf_16.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__clkbuf_16.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__clkbuf_16 A VGND VNB VPB VPWR X
 M1000 VPWR a_116_47# X VPB phighvt w=1.26e+06u l=150000u
@@ -82,4 +97,3 @@
 M1039 VPWR a_116_47# X VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/clkbuf/sky130_fd_sc_lp__clkbuf_2.spice b/cells/clkbuf/sky130_fd_sc_lp__clkbuf_2.spice
index 6f408a7..720557d 100644
--- a/cells/clkbuf/sky130_fd_sc_lp__clkbuf_2.spice
+++ b/cells/clkbuf/sky130_fd_sc_lp__clkbuf_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__clkbuf_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__clkbuf_2 A VGND VNB VPB VPWR X
 M1000 VPWR a_27_47# X VPB phighvt w=1.26e+06u l=150000u
@@ -14,4 +29,3 @@
 M1005 VPWR A a_27_47# VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=3.339e+11p ps=3.05e+06u
 .ends
-
diff --git a/cells/clkbuf/sky130_fd_sc_lp__clkbuf_4.spice b/cells/clkbuf/sky130_fd_sc_lp__clkbuf_4.spice
index c068cd2..4ec2520 100644
--- a/cells/clkbuf/sky130_fd_sc_lp__clkbuf_4.spice
+++ b/cells/clkbuf/sky130_fd_sc_lp__clkbuf_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__clkbuf_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__clkbuf_4 A VGND VNB VPB VPWR X
 M1000 VPWR a_27_47# X VPB phighvt w=1.26e+06u l=150000u
@@ -22,4 +37,3 @@
 M1009 VPWR A a_27_47# VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=3.339e+11p ps=3.05e+06u
 .ends
-
diff --git a/cells/clkbuf/sky130_fd_sc_lp__clkbuf_8.spice b/cells/clkbuf/sky130_fd_sc_lp__clkbuf_8.spice
index 2fcda14..f31a331 100644
--- a/cells/clkbuf/sky130_fd_sc_lp__clkbuf_8.spice
+++ b/cells/clkbuf/sky130_fd_sc_lp__clkbuf_8.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__clkbuf_8.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__clkbuf_8 A VGND VNB VPB VPWR X
 M1000 X a_110_47# VPWR VPB phighvt w=1.26e+06u l=150000u
@@ -42,4 +57,3 @@
 M1019 X a_110_47# VGND VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/clkbuf/sky130_fd_sc_lp__clkbuf_lp.spice b/cells/clkbuf/sky130_fd_sc_lp__clkbuf_lp.spice
index 440a03e..6179371 100644
--- a/cells/clkbuf/sky130_fd_sc_lp__clkbuf_lp.spice
+++ b/cells/clkbuf/sky130_fd_sc_lp__clkbuf_lp.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__clkbuf_lp.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__clkbuf_lp A VGND VNB VPB VPWR X
 M1000 a_124_57# a_94_31# X VNB nshort w=420000u l=150000u
@@ -14,4 +29,3 @@
 M1005 VGND a_94_31# a_124_57# VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/clkbuflp/sky130_fd_sc_lp__clkbuflp_16.spice b/cells/clkbuflp/sky130_fd_sc_lp__clkbuflp_16.spice
index bb3bc78..f02a747 100644
--- a/cells/clkbuflp/sky130_fd_sc_lp__clkbuflp_16.spice
+++ b/cells/clkbuflp/sky130_fd_sc_lp__clkbuflp_16.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__clkbuflp_16.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__clkbuflp_16 A VGND VNB VPB VPWR X
 M1000 X a_130_417# a_1378_47# VNB nshort w=550000u l=150000u
@@ -102,4 +117,3 @@
 M1049 X a_130_417# a_746_47# VNB nshort w=550000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/clkbuflp/sky130_fd_sc_lp__clkbuflp_2.spice b/cells/clkbuflp/sky130_fd_sc_lp__clkbuflp_2.spice
index 55cf110..0202b92 100644
--- a/cells/clkbuflp/sky130_fd_sc_lp__clkbuflp_2.spice
+++ b/cells/clkbuflp/sky130_fd_sc_lp__clkbuflp_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__clkbuflp_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__clkbuflp_2 A VGND VNB VPB VPWR X
 M1000 VGND A a_110_47# VNB nshort w=420000u l=150000u
@@ -20,4 +35,3 @@
 M1008 X a_27_47# VPWR VPB phighvt w=1e+06u l=250000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/clkbuflp/sky130_fd_sc_lp__clkbuflp_4.spice b/cells/clkbuflp/sky130_fd_sc_lp__clkbuflp_4.spice
index 7712c6a..13d4c2f 100644
--- a/cells/clkbuflp/sky130_fd_sc_lp__clkbuflp_4.spice
+++ b/cells/clkbuflp/sky130_fd_sc_lp__clkbuflp_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__clkbuflp_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__clkbuflp_4 A VGND VNB VPB VPWR X
 M1000 a_130_417# A a_110_47# VNB nshort w=640000u l=150000u
@@ -26,4 +41,3 @@
 M1011 X a_130_417# VPWR VPB phighvt w=1e+06u l=250000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/clkbuflp/sky130_fd_sc_lp__clkbuflp_8.spice b/cells/clkbuflp/sky130_fd_sc_lp__clkbuflp_8.spice
index 977d77b..e897c5f 100644
--- a/cells/clkbuflp/sky130_fd_sc_lp__clkbuflp_8.spice
+++ b/cells/clkbuflp/sky130_fd_sc_lp__clkbuflp_8.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__clkbuflp_8.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__clkbuflp_8 A VGND VNB VPB VPWR X
 M1000 X a_130_417# a_534_47# VNB nshort w=550000u l=150000u
@@ -50,4 +65,3 @@
 M1023 X a_130_417# VPWR VPB phighvt w=1e+06u l=250000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/clkdlybuf4s15/sky130_fd_sc_lp__clkdlybuf4s15_1.spice b/cells/clkdlybuf4s15/sky130_fd_sc_lp__clkdlybuf4s15_1.spice
index 0c9e17c..075d6ae 100644
--- a/cells/clkdlybuf4s15/sky130_fd_sc_lp__clkdlybuf4s15_1.spice
+++ b/cells/clkdlybuf4s15/sky130_fd_sc_lp__clkdlybuf4s15_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__clkdlybuf4s15_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__clkdlybuf4s15_1 A VGND VNB VPB VPWR X
 M1000 X a_394_52# VPWR VPB phighvt w=1.26e+06u l=150000u
@@ -18,4 +33,3 @@
 M1007 VPWR A a_27_52# VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=3.339e+11p ps=3.05e+06u
 .ends
-
diff --git a/cells/clkdlybuf4s15/sky130_fd_sc_lp__clkdlybuf4s15_2.spice b/cells/clkdlybuf4s15/sky130_fd_sc_lp__clkdlybuf4s15_2.spice
index ef51e9d..10a5b6a 100644
--- a/cells/clkdlybuf4s15/sky130_fd_sc_lp__clkdlybuf4s15_2.spice
+++ b/cells/clkdlybuf4s15/sky130_fd_sc_lp__clkdlybuf4s15_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__clkdlybuf4s15_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__clkdlybuf4s15_2 A VGND VNB VPB VPWR X
 M1000 VGND a_394_52# X VNB nshort w=420000u l=150000u
@@ -22,4 +37,3 @@
 M1009 VPWR A a_27_52# VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=3.339e+11p ps=3.05e+06u
 .ends
-
diff --git a/cells/clkdlybuf4s18/sky130_fd_sc_lp__clkdlybuf4s18_1.spice b/cells/clkdlybuf4s18/sky130_fd_sc_lp__clkdlybuf4s18_1.spice
index 7f47a73..dc02737 100644
--- a/cells/clkdlybuf4s18/sky130_fd_sc_lp__clkdlybuf4s18_1.spice
+++ b/cells/clkdlybuf4s18/sky130_fd_sc_lp__clkdlybuf4s18_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__clkdlybuf4s18_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__clkdlybuf4s18_1 A VGND VNB VPB VPWR X
 M1000 a_282_52# a_27_52# VPWR VPB phighvt w=1e+06u l=180000u
@@ -18,4 +33,3 @@
 M1007 VPWR A a_27_52# VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=3.339e+11p ps=3.05e+06u
 .ends
-
diff --git a/cells/clkdlybuf4s18/sky130_fd_sc_lp__clkdlybuf4s18_2.spice b/cells/clkdlybuf4s18/sky130_fd_sc_lp__clkdlybuf4s18_2.spice
index 5daf052..da1b94b 100644
--- a/cells/clkdlybuf4s18/sky130_fd_sc_lp__clkdlybuf4s18_2.spice
+++ b/cells/clkdlybuf4s18/sky130_fd_sc_lp__clkdlybuf4s18_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__clkdlybuf4s18_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__clkdlybuf4s18_2 A VGND VNB VPB VPWR X
 M1000 a_282_52# a_27_52# VPWR VPB phighvt w=1e+06u l=180000u
@@ -22,4 +37,3 @@
 M1009 VPWR A a_27_52# VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=3.339e+11p ps=3.05e+06u
 .ends
-
diff --git a/cells/clkdlybuf4s25/sky130_fd_sc_lp__clkdlybuf4s25_1.spice b/cells/clkdlybuf4s25/sky130_fd_sc_lp__clkdlybuf4s25_1.spice
index 4c1cd31..3538929 100644
--- a/cells/clkdlybuf4s25/sky130_fd_sc_lp__clkdlybuf4s25_1.spice
+++ b/cells/clkdlybuf4s25/sky130_fd_sc_lp__clkdlybuf4s25_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__clkdlybuf4s25_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__clkdlybuf4s25_1 A VGND VNB VPB VPWR X
 M1000 X a_394_52# VPWR VPB phighvt w=1.26e+06u l=150000u
@@ -18,4 +33,3 @@
 M1007 VPWR A a_27_52# VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=3.339e+11p ps=3.05e+06u
 .ends
-
diff --git a/cells/clkdlybuf4s25/sky130_fd_sc_lp__clkdlybuf4s25_2.spice b/cells/clkdlybuf4s25/sky130_fd_sc_lp__clkdlybuf4s25_2.spice
index f07197a..3a7bd83 100644
--- a/cells/clkdlybuf4s25/sky130_fd_sc_lp__clkdlybuf4s25_2.spice
+++ b/cells/clkdlybuf4s25/sky130_fd_sc_lp__clkdlybuf4s25_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__clkdlybuf4s25_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__clkdlybuf4s25_2 A VGND VNB VPB VPWR X
 M1000 VGND a_394_52# X VNB nshort w=420000u l=150000u
@@ -22,4 +37,3 @@
 M1009 VPWR A a_27_52# VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=3.339e+11p ps=3.05e+06u
 .ends
-
diff --git a/cells/clkdlybuf4s50/sky130_fd_sc_lp__clkdlybuf4s50_1.spice b/cells/clkdlybuf4s50/sky130_fd_sc_lp__clkdlybuf4s50_1.spice
index 00009dd..fef3386 100644
--- a/cells/clkdlybuf4s50/sky130_fd_sc_lp__clkdlybuf4s50_1.spice
+++ b/cells/clkdlybuf4s50/sky130_fd_sc_lp__clkdlybuf4s50_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__clkdlybuf4s50_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__clkdlybuf4s50_1 A VGND VNB VPB VPWR X
 M1000 a_282_52# a_27_52# VPWR VPB phighvt w=1e+06u l=500000u
@@ -18,4 +33,3 @@
 M1007 VPWR A a_27_52# VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=3.339e+11p ps=3.05e+06u
 .ends
-
diff --git a/cells/clkdlybuf4s50/sky130_fd_sc_lp__clkdlybuf4s50_2.spice b/cells/clkdlybuf4s50/sky130_fd_sc_lp__clkdlybuf4s50_2.spice
index ad1e2e5..df669eb 100644
--- a/cells/clkdlybuf4s50/sky130_fd_sc_lp__clkdlybuf4s50_2.spice
+++ b/cells/clkdlybuf4s50/sky130_fd_sc_lp__clkdlybuf4s50_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__clkdlybuf4s50_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__clkdlybuf4s50_2 A VGND VNB VPB VPWR X
 M1000 a_282_52# a_27_52# VPWR VPB phighvt w=1e+06u l=500000u
@@ -22,4 +37,3 @@
 M1009 VPWR A a_27_52# VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=3.339e+11p ps=3.05e+06u
 .ends
-
diff --git a/cells/clkinv/sky130_fd_sc_lp__clkinv_0.spice b/cells/clkinv/sky130_fd_sc_lp__clkinv_0.spice
index 053aa41..cb022ec 100644
--- a/cells/clkinv/sky130_fd_sc_lp__clkinv_0.spice
+++ b/cells/clkinv/sky130_fd_sc_lp__clkinv_0.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__clkinv_0.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__clkinv_0 A VGND VNB VPB VPWR Y
 M1000 Y A VGND VNB nshort w=420000u l=150000u
@@ -6,4 +21,3 @@
 M1001 Y A VPWR VPB phighvt w=640000u l=150000u
 +  ad=1.696e+11p pd=1.81e+06u as=1.696e+11p ps=1.81e+06u
 .ends
-
diff --git a/cells/clkinv/sky130_fd_sc_lp__clkinv_1.spice b/cells/clkinv/sky130_fd_sc_lp__clkinv_1.spice
index 10b141d..0ac611d 100644
--- a/cells/clkinv/sky130_fd_sc_lp__clkinv_1.spice
+++ b/cells/clkinv/sky130_fd_sc_lp__clkinv_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__clkinv_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__clkinv_1 A VGND VNB VPB VPWR Y
 M1000 VPWR A Y VPB phighvt w=840000u l=150000u
@@ -8,4 +23,3 @@
 M1002 Y A VPWR VPB phighvt w=840000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/clkinv/sky130_fd_sc_lp__clkinv_16.spice b/cells/clkinv/sky130_fd_sc_lp__clkinv_16.spice
index bd77ccc..c71f6a6 100644
--- a/cells/clkinv/sky130_fd_sc_lp__clkinv_16.spice
+++ b/cells/clkinv/sky130_fd_sc_lp__clkinv_16.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__clkinv_16.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__clkinv_16 A VGND VNB VPB VPWR Y
 M1000 Y A VPWR VPB phighvt w=1.26e+06u l=150000u
@@ -82,4 +97,3 @@
 M1039 VGND A Y VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/clkinv/sky130_fd_sc_lp__clkinv_2.spice b/cells/clkinv/sky130_fd_sc_lp__clkinv_2.spice
index 4f3e5dc..7ee7dff 100644
--- a/cells/clkinv/sky130_fd_sc_lp__clkinv_2.spice
+++ b/cells/clkinv/sky130_fd_sc_lp__clkinv_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__clkinv_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__clkinv_2 A VGND VNB VPB VPWR Y
 M1000 Y A VGND VNB nshort w=420000u l=150000u
@@ -12,4 +27,3 @@
 M1004 Y A VPWR VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/clkinv/sky130_fd_sc_lp__clkinv_4.spice b/cells/clkinv/sky130_fd_sc_lp__clkinv_4.spice
index 28d2d94..1b471c2 100644
--- a/cells/clkinv/sky130_fd_sc_lp__clkinv_4.spice
+++ b/cells/clkinv/sky130_fd_sc_lp__clkinv_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__clkinv_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__clkinv_4 A VGND VNB VPB VPWR Y
 M1000 Y A VGND VNB nshort w=420000u l=150000u
@@ -22,4 +37,3 @@
 M1009 Y A VPWR VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/clkinv/sky130_fd_sc_lp__clkinv_8.spice b/cells/clkinv/sky130_fd_sc_lp__clkinv_8.spice
index 7833ec4..a1caebb 100644
--- a/cells/clkinv/sky130_fd_sc_lp__clkinv_8.spice
+++ b/cells/clkinv/sky130_fd_sc_lp__clkinv_8.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__clkinv_8.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__clkinv_8 A VGND VNB VPB VPWR Y
 M1000 Y A VPWR VPB phighvt w=1.26e+06u l=150000u
@@ -42,4 +57,3 @@
 M1019 Y A VPWR VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/clkinv/sky130_fd_sc_lp__clkinv_lp.spice b/cells/clkinv/sky130_fd_sc_lp__clkinv_lp.spice
index d16fdbc..fd44fdc 100644
--- a/cells/clkinv/sky130_fd_sc_lp__clkinv_lp.spice
+++ b/cells/clkinv/sky130_fd_sc_lp__clkinv_lp.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__clkinv_lp.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__clkinv_lp A VGND VNB VPB VPWR Y
 M1000 a_124_92# A VGND VNB nshort w=420000u l=150000u
@@ -10,4 +25,3 @@
 M1003 Y A a_124_468# VPB phighvt w=640000u l=150000u
 +  ad=1.824e+11p pd=1.85e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/clkinv/sky130_fd_sc_lp__clkinv_lp2.spice b/cells/clkinv/sky130_fd_sc_lp__clkinv_lp2.spice
index 65b6c4a..b97862e 100644
--- a/cells/clkinv/sky130_fd_sc_lp__clkinv_lp2.spice
+++ b/cells/clkinv/sky130_fd_sc_lp__clkinv_lp2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__clkinv_lp2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__clkinv_lp2 A VGND VNB VPB VPWR Y
 M1000 a_124_67# A VGND VNB nshort w=420000u l=150000u
@@ -8,4 +23,3 @@
 M1002 Y A a_124_67# VNB nshort w=420000u l=150000u
 +  ad=1.197e+11p pd=1.41e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/clkinvlp/sky130_fd_sc_lp__clkinvlp_16.spice b/cells/clkinvlp/sky130_fd_sc_lp__clkinvlp_16.spice
index 7128cb6..3f3eefb 100644
--- a/cells/clkinvlp/sky130_fd_sc_lp__clkinvlp_16.spice
+++ b/cells/clkinvlp/sky130_fd_sc_lp__clkinvlp_16.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__clkinvlp_16.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__clkinvlp_16 A VGND VNB VPB VPWR Y
 M1000 Y A VPWR VPB phighvt w=1e+06u l=250000u
@@ -74,4 +89,3 @@
 M1035 Y A VPWR VPB phighvt w=1e+06u l=250000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/clkinvlp/sky130_fd_sc_lp__clkinvlp_2.spice b/cells/clkinvlp/sky130_fd_sc_lp__clkinvlp_2.spice
index 287a72f..69f29b3 100644
--- a/cells/clkinvlp/sky130_fd_sc_lp__clkinvlp_2.spice
+++ b/cells/clkinvlp/sky130_fd_sc_lp__clkinvlp_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__clkinvlp_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__clkinvlp_2 A VGND VNB VPB VPWR Y
 M1000 Y A VPWR VPB phighvt w=1e+06u l=250000u
@@ -10,4 +25,3 @@
 M1003 VPWR A Y VPB phighvt w=1e+06u l=250000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/clkinvlp/sky130_fd_sc_lp__clkinvlp_4.spice b/cells/clkinvlp/sky130_fd_sc_lp__clkinvlp_4.spice
index 1e332e3..848162e 100644
--- a/cells/clkinvlp/sky130_fd_sc_lp__clkinvlp_4.spice
+++ b/cells/clkinvlp/sky130_fd_sc_lp__clkinvlp_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__clkinvlp_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__clkinvlp_4 A VGND VNB VPB VPWR Y
 M1000 Y A VPWR VPB phighvt w=1e+06u l=250000u
@@ -18,4 +33,3 @@
 M1007 VGND A a_268_67# VNB nshort w=550000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/clkinvlp/sky130_fd_sc_lp__clkinvlp_8.spice b/cells/clkinvlp/sky130_fd_sc_lp__clkinvlp_8.spice
index 71f5269..d75b205 100644
--- a/cells/clkinvlp/sky130_fd_sc_lp__clkinvlp_8.spice
+++ b/cells/clkinvlp/sky130_fd_sc_lp__clkinvlp_8.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__clkinvlp_8.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__clkinvlp_8 A VGND VNB VPB VPWR Y
 M1000 Y A VPWR VPB phighvt w=1e+06u l=250000u
@@ -34,4 +49,3 @@
 M1015 Y A VPWR VPB phighvt w=1e+06u l=250000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/conb/sky130_fd_sc_lp__conb_0.spice b/cells/conb/sky130_fd_sc_lp__conb_0.spice
index 173569e..81e86d7 100644
--- a/cells/conb/sky130_fd_sc_lp__conb_0.spice
+++ b/cells/conb/sky130_fd_sc_lp__conb_0.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__conb_0.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__conb_0 VGND VNB VPB VPWR HI LO
 M1000 VPWR LO HI VPB phighvt w=640000u l=150000u
@@ -10,4 +25,3 @@
 M1003 VGND LO LO VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/conb/sky130_fd_sc_lp__conb_1.spice b/cells/conb/sky130_fd_sc_lp__conb_1.spice
index 2fc10ee..4038a35 100644
--- a/cells/conb/sky130_fd_sc_lp__conb_1.spice
+++ b/cells/conb/sky130_fd_sc_lp__conb_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__conb_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__conb_1 VGND VNB VPB VPWR HI LO
 M1000 VPWR LO HI VPB phighvt w=640000u l=150000u
@@ -10,4 +25,3 @@
 M1003 VGND LO LO VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/decap/sky130_fd_sc_lp__decap_12.spice b/cells/decap/sky130_fd_sc_lp__decap_12.spice
index 140dc67..ef4eb61 100644
--- a/cells/decap/sky130_fd_sc_lp__decap_12.spice
+++ b/cells/decap/sky130_fd_sc_lp__decap_12.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__decap_12.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__decap_12 VGND VNB VPB VPWR
 M1000 VGND VPWR VGND VNB nshort w=1e+06u l=4e+06u
@@ -6,4 +21,3 @@
 M1001 VPWR VGND VPWR VPB phighvt w=1e+06u l=4e+06u
 +  ad=5.6e+11p pd=5.12e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/decap/sky130_fd_sc_lp__decap_3.spice b/cells/decap/sky130_fd_sc_lp__decap_3.spice
index c803884..22cdff6 100644
--- a/cells/decap/sky130_fd_sc_lp__decap_3.spice
+++ b/cells/decap/sky130_fd_sc_lp__decap_3.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__decap_3.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__decap_3 VGND VNB VPB VPWR
 M1000 VPWR VGND VPWR VPB phighvt w=1e+06u l=500000u
@@ -6,4 +21,3 @@
 M1001 VGND VPWR VGND VNB nshort w=550000u l=500000u
 +  ad=3.025e+11p pd=3.3e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/decap/sky130_fd_sc_lp__decap_4.spice b/cells/decap/sky130_fd_sc_lp__decap_4.spice
index 593e230..8667e7d 100644
--- a/cells/decap/sky130_fd_sc_lp__decap_4.spice
+++ b/cells/decap/sky130_fd_sc_lp__decap_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__decap_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__decap_4 VGND VNB VPB VPWR
 M1000 VPWR VGND VPWR VPB phighvt w=1e+06u l=1e+06u
@@ -6,4 +21,3 @@
 M1001 VGND VPWR VGND VNB nshort w=1e+06u l=1e+06u
 +  ad=5.5e+11p pd=5.1e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/decap/sky130_fd_sc_lp__decap_6.spice b/cells/decap/sky130_fd_sc_lp__decap_6.spice
index f5a95cb..2e2c261 100644
--- a/cells/decap/sky130_fd_sc_lp__decap_6.spice
+++ b/cells/decap/sky130_fd_sc_lp__decap_6.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__decap_6.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__decap_6 VGND VNB VPB VPWR
 M1000 VPWR VGND VPWR VPB phighvt w=1e+06u l=2e+06u
@@ -6,4 +21,3 @@
 M1001 VGND VPWR VGND VNB nshort w=1e+06u l=2e+06u
 +  ad=5.3e+11p pd=5.06e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/decap/sky130_fd_sc_lp__decap_8.spice b/cells/decap/sky130_fd_sc_lp__decap_8.spice
index f1e970f..bd70abb 100644
--- a/cells/decap/sky130_fd_sc_lp__decap_8.spice
+++ b/cells/decap/sky130_fd_sc_lp__decap_8.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__decap_8.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__decap_8 VGND VNB VPB VPWR
 M1000 VGND VPWR VGND VNB nshort w=1e+06u l=2e+06u
@@ -6,4 +21,3 @@
 M1001 VPWR VGND VPWR VPB phighvt w=1e+06u l=2e+06u
 +  ad=5.6e+11p pd=5.12e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/decapkapwr/sky130_fd_sc_lp__decapkapwr_12.spice b/cells/decapkapwr/sky130_fd_sc_lp__decapkapwr_12.spice
index 895f3ba..b747dc7 100644
--- a/cells/decapkapwr/sky130_fd_sc_lp__decapkapwr_12.spice
+++ b/cells/decapkapwr/sky130_fd_sc_lp__decapkapwr_12.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__decapkapwr_12.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__decapkapwr_12 KAPWR VGND VNB VPB VPWR
 M1000 VGND KAPWR VGND VNB nshort w=1e+06u l=4e+06u
@@ -6,4 +21,3 @@
 M1001 KAPWR VGND KAPWR VPB phighvt w=1e+06u l=4e+06u
 +  ad=5.6e+11p pd=5.12e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/decapkapwr/sky130_fd_sc_lp__decapkapwr_3.spice b/cells/decapkapwr/sky130_fd_sc_lp__decapkapwr_3.spice
index d22d2d8..cfbe443 100644
--- a/cells/decapkapwr/sky130_fd_sc_lp__decapkapwr_3.spice
+++ b/cells/decapkapwr/sky130_fd_sc_lp__decapkapwr_3.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__decapkapwr_3.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__decapkapwr_3 KAPWR VGND VNB VPB VPWR
 M1000 KAPWR VGND KAPWR VPB phighvt w=1e+06u l=500000u
@@ -6,4 +21,3 @@
 M1001 VGND KAPWR VGND VNB nshort w=550000u l=500000u
 +  ad=3.025e+11p pd=3.3e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/decapkapwr/sky130_fd_sc_lp__decapkapwr_4.spice b/cells/decapkapwr/sky130_fd_sc_lp__decapkapwr_4.spice
index da2571b..5ce07ce 100644
--- a/cells/decapkapwr/sky130_fd_sc_lp__decapkapwr_4.spice
+++ b/cells/decapkapwr/sky130_fd_sc_lp__decapkapwr_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__decapkapwr_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__decapkapwr_4 KAPWR VGND VNB VPB VPWR
 M1000 KAPWR VGND KAPWR VPB phighvt w=1e+06u l=1e+06u
@@ -6,4 +21,3 @@
 M1001 VGND KAPWR VGND VNB nshort w=1e+06u l=1e+06u
 +  ad=5.5e+11p pd=5.1e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/decapkapwr/sky130_fd_sc_lp__decapkapwr_6.spice b/cells/decapkapwr/sky130_fd_sc_lp__decapkapwr_6.spice
index bc1dc01..c4bb597 100644
--- a/cells/decapkapwr/sky130_fd_sc_lp__decapkapwr_6.spice
+++ b/cells/decapkapwr/sky130_fd_sc_lp__decapkapwr_6.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__decapkapwr_6.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__decapkapwr_6 KAPWR VGND VNB VPB VPWR
 M1000 KAPWR VGND KAPWR VPB phighvt w=1e+06u l=2e+06u
@@ -6,4 +21,3 @@
 M1001 VGND KAPWR VGND VNB nshort w=1e+06u l=2e+06u
 +  ad=5.3e+11p pd=5.06e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/decapkapwr/sky130_fd_sc_lp__decapkapwr_8.spice b/cells/decapkapwr/sky130_fd_sc_lp__decapkapwr_8.spice
index bb4c88a..bfd3c97 100644
--- a/cells/decapkapwr/sky130_fd_sc_lp__decapkapwr_8.spice
+++ b/cells/decapkapwr/sky130_fd_sc_lp__decapkapwr_8.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__decapkapwr_8.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__decapkapwr_8 KAPWR VGND VNB VPB VPWR
 M1000 VGND KAPWR VGND VNB nshort w=1e+06u l=2e+06u
@@ -6,4 +21,3 @@
 M1001 KAPWR VGND KAPWR VPB phighvt w=1e+06u l=2e+06u
 +  ad=5.6e+11p pd=5.12e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/dfbbn/sky130_fd_sc_lp__dfbbn_1.spice b/cells/dfbbn/sky130_fd_sc_lp__dfbbn_1.spice
index 40e8426..89a2ffa 100644
--- a/cells/dfbbn/sky130_fd_sc_lp__dfbbn_1.spice
+++ b/cells/dfbbn/sky130_fd_sc_lp__dfbbn_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__dfbbn_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__dfbbn_1 CLK_N D RESET_B SET_B VGND VNB VPB VPWR Q Q_N
 M1000 VPWR a_1741_137# a_1649_512# VPB phighvt w=420000u l=150000u
@@ -82,4 +97,3 @@
 M1039 a_1649_512# a_113_67# a_1531_428# VPB phighvt w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/dfbbn/sky130_fd_sc_lp__dfbbn_2.spice b/cells/dfbbn/sky130_fd_sc_lp__dfbbn_2.spice
index 57d4ed4..00e99bf 100644
--- a/cells/dfbbn/sky130_fd_sc_lp__dfbbn_2.spice
+++ b/cells/dfbbn/sky130_fd_sc_lp__dfbbn_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__dfbbn_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__dfbbn_2 CLK_N D RESET_B SET_B VGND VNB VPB VPWR Q Q_N
 M1000 VGND a_1746_137# a_1698_163# VNB nshort w=420000u l=150000u
@@ -90,4 +105,3 @@
 M1043 a_1447_119# a_789_78# VGND VNB nshort w=640000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/dfbbp/sky130_fd_sc_lp__dfbbp_1.spice b/cells/dfbbp/sky130_fd_sc_lp__dfbbp_1.spice
index e74bf0b..bf3dc01 100644
--- a/cells/dfbbp/sky130_fd_sc_lp__dfbbp_1.spice
+++ b/cells/dfbbp/sky130_fd_sc_lp__dfbbp_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__dfbbp_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__dfbbp_1 CLK D RESET_B SET_B VGND VNB VPB VPWR Q Q_N
 M1000 VGND a_1545_332# a_2317_367# VNB nshort w=420000u l=150000u
@@ -82,4 +97,3 @@
 M1039 Q a_2317_367# VGND VNB nshort w=840000u l=150000u
 +  ad=2.394e+11p pd=2.25e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/dfrbp/sky130_fd_sc_lp__dfrbp_1.spice b/cells/dfrbp/sky130_fd_sc_lp__dfrbp_1.spice
index 3622c8c..b50dae1 100644
--- a/cells/dfrbp/sky130_fd_sc_lp__dfrbp_1.spice
+++ b/cells/dfrbp/sky130_fd_sc_lp__dfrbp_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__dfrbp_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__dfrbp_1 CLK D RESET_B VGND VNB VPB VPWR Q Q_N
 M1000 a_423_191# RESET_B VGND VNB nshort w=420000u l=150000u
@@ -70,4 +85,3 @@
 M1033 VGND a_1440_304# a_1420_128# VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/dfrbp/sky130_fd_sc_lp__dfrbp_2.spice b/cells/dfrbp/sky130_fd_sc_lp__dfrbp_2.spice
index f72bc35..59bd570 100644
--- a/cells/dfrbp/sky130_fd_sc_lp__dfrbp_2.spice
+++ b/cells/dfrbp/sky130_fd_sc_lp__dfrbp_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__dfrbp_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__dfrbp_2 CLK D RESET_B VGND VNB VPB VPWR Q Q_N
 M1000 VPWR a_811_341# a_793_463# VPB phighvt w=420000u l=150000u
@@ -78,4 +93,3 @@
 M1037 VGND a_1444_320# a_1424_128# VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/dfrbp/sky130_fd_sc_lp__dfrbp_lp.spice b/cells/dfrbp/sky130_fd_sc_lp__dfrbp_lp.spice
index 315f6ee..8f86798 100644
--- a/cells/dfrbp/sky130_fd_sc_lp__dfrbp_lp.spice
+++ b/cells/dfrbp/sky130_fd_sc_lp__dfrbp_lp.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__dfrbp_lp.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__dfrbp_lp CLK D RESET_B VGND VNB VPB VPWR Q Q_N
 M1000 a_1301_373# a_590_116# a_817_90# VPB phighvt w=840000u l=150000u
@@ -104,4 +119,3 @@
 M1050 a_3036_48# a_1799_379# VGND VNB nshort w=840000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/dfrtn/sky130_fd_sc_lp__dfrtn_1.spice b/cells/dfrtn/sky130_fd_sc_lp__dfrtn_1.spice
index 1649225..167a6a1 100644
--- a/cells/dfrtn/sky130_fd_sc_lp__dfrtn_1.spice
+++ b/cells/dfrtn/sky130_fd_sc_lp__dfrtn_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__dfrtn_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__dfrtn_1 CLK_N D RESET_B VGND VNB VPB VPWR Q
 M1000 a_1287_276# RESET_B VPWR VPB phighvt w=420000u l=150000u
@@ -66,4 +81,3 @@
 M1031 VGND RESET_B a_540_123# VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/dfrtp/sky130_fd_sc_lp__dfrtp_1.spice b/cells/dfrtp/sky130_fd_sc_lp__dfrtp_1.spice
index 91f80aa..e8ec847 100644
--- a/cells/dfrtp/sky130_fd_sc_lp__dfrtp_1.spice
+++ b/cells/dfrtp/sky130_fd_sc_lp__dfrtp_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__dfrtp_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__dfrtp_1 CLK D RESET_B VGND VNB VPB VPWR Q
 M1000 VGND a_1467_419# a_1417_133# VNB nshort w=420000u l=150000u
@@ -66,4 +81,3 @@
 M1031 a_1247_89# a_196_462# a_695_375# VNB nshort w=640000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/dfrtp/sky130_fd_sc_lp__dfrtp_2.spice b/cells/dfrtp/sky130_fd_sc_lp__dfrtp_2.spice
index 6e250e2..7192735 100644
--- a/cells/dfrtp/sky130_fd_sc_lp__dfrtp_2.spice
+++ b/cells/dfrtp/sky130_fd_sc_lp__dfrtp_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__dfrtp_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__dfrtp_2 CLK D RESET_B VGND VNB VPB VPWR Q
 M1000 VPWR a_1252_451# a_1836_47# VPB phighvt w=640000u l=150000u
@@ -70,4 +85,3 @@
 M1033 VPWR a_1836_47# Q VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/dfrtp/sky130_fd_sc_lp__dfrtp_4.spice b/cells/dfrtp/sky130_fd_sc_lp__dfrtp_4.spice
index 5f0a154..e9d4e36 100644
--- a/cells/dfrtp/sky130_fd_sc_lp__dfrtp_4.spice
+++ b/cells/dfrtp/sky130_fd_sc_lp__dfrtp_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__dfrtp_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__dfrtp_4 CLK D RESET_B VGND VNB VPB VPWR Q
 M1000 VPWR a_731_405# a_689_535# VPB phighvt w=420000u l=150000u
@@ -78,4 +93,3 @@
 M1037 VPWR a_1891_47# Q VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/dfsbp/sky130_fd_sc_lp__dfsbp_1.spice b/cells/dfsbp/sky130_fd_sc_lp__dfsbp_1.spice
index 156ea15..4bf7fd8 100644
--- a/cells/dfsbp/sky130_fd_sc_lp__dfsbp_1.spice
+++ b/cells/dfsbp/sky130_fd_sc_lp__dfsbp_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__dfsbp_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__dfsbp_1 CLK D SET_B VGND VNB VPB VPWR Q Q_N
 M1000 a_666_119# a_161_21# a_580_119# VNB nshort w=420000u l=150000u
@@ -70,4 +85,3 @@
 M1033 a_1472_449# a_161_21# a_1331_151# VPB phighvt w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/dfsbp/sky130_fd_sc_lp__dfsbp_2.spice b/cells/dfsbp/sky130_fd_sc_lp__dfsbp_2.spice
index ed9a325..8ec912e 100644
--- a/cells/dfsbp/sky130_fd_sc_lp__dfsbp_2.spice
+++ b/cells/dfsbp/sky130_fd_sc_lp__dfsbp_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__dfsbp_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__dfsbp_2 CLK D SET_B VGND VNB VPB VPWR Q Q_N
 M1000 a_129_179# CLK VPWR VPB phighvt w=640000u l=150000u
@@ -78,4 +93,3 @@
 M1037 a_593_125# a_191_21# a_507_125# VPB phighvt w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/dfsbp/sky130_fd_sc_lp__dfsbp_lp.spice b/cells/dfsbp/sky130_fd_sc_lp__dfsbp_lp.spice
index 60c1468..7d3e7ca 100644
--- a/cells/dfsbp/sky130_fd_sc_lp__dfsbp_lp.spice
+++ b/cells/dfsbp/sky130_fd_sc_lp__dfsbp_lp.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__dfsbp_lp.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__dfsbp_lp CLK D SET_B VGND VNB VPB VPWR Q Q_N
 M1000 a_1621_125# a_263_409# a_1519_125# VNB nshort w=420000u l=150000u
@@ -84,4 +99,3 @@
 M1040 a_2628_57# a_2383_57# VGND VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/dfstp/sky130_fd_sc_lp__dfstp_1.spice b/cells/dfstp/sky130_fd_sc_lp__dfstp_1.spice
index 20c2ba3..59b7309 100644
--- a/cells/dfstp/sky130_fd_sc_lp__dfstp_1.spice
+++ b/cells/dfstp/sky130_fd_sc_lp__dfstp_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__dfstp_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__dfstp_1 CLK D SET_B VGND VNB VPB VPWR Q
 M1000 Q a_1832_131# VGND VNB nshort w=840000u l=150000u
@@ -66,4 +81,3 @@
 M1031 a_1175_417# a_202_463# a_1110_47# VNB nshort w=640000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/dfstp/sky130_fd_sc_lp__dfstp_2.spice b/cells/dfstp/sky130_fd_sc_lp__dfstp_2.spice
index ffa409e..ead5425 100644
--- a/cells/dfstp/sky130_fd_sc_lp__dfstp_2.spice
+++ b/cells/dfstp/sky130_fd_sc_lp__dfstp_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__dfstp_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__dfstp_2 CLK D SET_B VGND VNB VPB VPWR Q
 M1000 a_988_379# a_486_119# VPWR VPB phighvt w=840000u l=150000u
@@ -70,4 +85,3 @@
 M1033 a_1158_47# SET_B VPWR VPB phighvt w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/dfstp/sky130_fd_sc_lp__dfstp_4.spice b/cells/dfstp/sky130_fd_sc_lp__dfstp_4.spice
index a20796b..da91bf1 100644
--- a/cells/dfstp/sky130_fd_sc_lp__dfstp_4.spice
+++ b/cells/dfstp/sky130_fd_sc_lp__dfstp_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__dfstp_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__dfstp_4 CLK D SET_B VGND VNB VPB VPWR Q
 M1000 a_690_463# a_30_99# a_562_119# VPB phighvt w=420000u l=150000u
@@ -78,4 +93,3 @@
 M1037 a_476_119# D VGND VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/dfstp/sky130_fd_sc_lp__dfstp_lp.spice b/cells/dfstp/sky130_fd_sc_lp__dfstp_lp.spice
index a66196e..3bd5322 100644
--- a/cells/dfstp/sky130_fd_sc_lp__dfstp_lp.spice
+++ b/cells/dfstp/sky130_fd_sc_lp__dfstp_lp.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__dfstp_lp.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__dfstp_lp CLK D SET_B VGND VNB VPB VPWR Q
 M1000 VPWR a_1731_99# a_1726_419# VPB phighvt w=1e+06u l=250000u
@@ -78,4 +93,3 @@
 M1037 VGND a_1526_125# a_2104_47# VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/dfxbp/sky130_fd_sc_lp__dfxbp_1.spice b/cells/dfxbp/sky130_fd_sc_lp__dfxbp_1.spice
index b5bd072..6fbeaca 100644
--- a/cells/dfxbp/sky130_fd_sc_lp__dfxbp_1.spice
+++ b/cells/dfxbp/sky130_fd_sc_lp__dfxbp_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__dfxbp_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__dfxbp_1 CLK D VGND VNB VPB VPWR Q Q_N
 M1000 a_1105_119# a_110_82# a_997_119# VNB nshort w=420000u l=150000u
@@ -58,4 +73,3 @@
 M1027 a_526_463# a_217_463# a_440_463# VPB phighvt w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/dfxbp/sky130_fd_sc_lp__dfxbp_2.spice b/cells/dfxbp/sky130_fd_sc_lp__dfxbp_2.spice
index 4df0e8f..265e74b 100644
--- a/cells/dfxbp/sky130_fd_sc_lp__dfxbp_2.spice
+++ b/cells/dfxbp/sky130_fd_sc_lp__dfxbp_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__dfxbp_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__dfxbp_2 CLK D VGND VNB VPB VPWR Q Q_N
 M1000 a_628_119# a_236_463# a_537_119# VNB nshort w=420000u l=150000u
@@ -66,4 +81,3 @@
 M1031 Q_N a_1513_137# VPWR VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/dfxbp/sky130_fd_sc_lp__dfxbp_lp.spice b/cells/dfxbp/sky130_fd_sc_lp__dfxbp_lp.spice
index 774b25b..04eb1f3 100644
--- a/cells/dfxbp/sky130_fd_sc_lp__dfxbp_lp.spice
+++ b/cells/dfxbp/sky130_fd_sc_lp__dfxbp_lp.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__dfxbp_lp.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__dfxbp_lp CLK D VGND VNB VPB VPWR Q Q_N
 M1000 a_297_85# D VGND VNB nshort w=420000u l=150000u
@@ -74,4 +89,3 @@
 M1035 a_1507_321# a_1339_153# VPWR VPB phighvt w=1e+06u l=250000u
 +  ad=2.85e+11p pd=2.57e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/dfxtp/sky130_fd_sc_lp__dfxtp_1.spice b/cells/dfxtp/sky130_fd_sc_lp__dfxtp_1.spice
index ec674e6..1b56a61 100644
--- a/cells/dfxtp/sky130_fd_sc_lp__dfxtp_1.spice
+++ b/cells/dfxtp/sky130_fd_sc_lp__dfxtp_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__dfxtp_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__dfxtp_1 CLK D VGND VNB VPB VPWR Q
 M1000 a_668_137# a_526_413# VPWR VPB phighvt w=840000u l=150000u
@@ -50,4 +65,3 @@
 M1023 a_440_413# D VPWR VPB phighvt w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/dfxtp/sky130_fd_sc_lp__dfxtp_2.spice b/cells/dfxtp/sky130_fd_sc_lp__dfxtp_2.spice
index 8be3c41..449963c 100644
--- a/cells/dfxtp/sky130_fd_sc_lp__dfxtp_2.spice
+++ b/cells/dfxtp/sky130_fd_sc_lp__dfxtp_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__dfxtp_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__dfxtp_2 CLK D VGND VNB VPB VPWR Q
 M1000 a_679_93# a_551_119# VGND VNB nshort w=640000u l=150000u
@@ -54,4 +69,3 @@
 M1025 VGND a_1175_93# Q VNB nshort w=840000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/dfxtp/sky130_fd_sc_lp__dfxtp_4.spice b/cells/dfxtp/sky130_fd_sc_lp__dfxtp_4.spice
index e206ad1..6d493e1 100644
--- a/cells/dfxtp/sky130_fd_sc_lp__dfxtp_4.spice
+++ b/cells/dfxtp/sky130_fd_sc_lp__dfxtp_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__dfxtp_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__dfxtp_4 CLK D VGND VNB VPB VPWR Q
 M1000 a_526_413# a_110_70# a_431_119# VNB nshort w=420000u l=150000u
@@ -62,4 +77,3 @@
 M1029 VGND a_1112_93# Q VNB nshort w=840000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/dfxtp/sky130_fd_sc_lp__dfxtp_lp.spice b/cells/dfxtp/sky130_fd_sc_lp__dfxtp_lp.spice
index 472f3a5..bcab519 100644
--- a/cells/dfxtp/sky130_fd_sc_lp__dfxtp_lp.spice
+++ b/cells/dfxtp/sky130_fd_sc_lp__dfxtp_lp.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__dfxtp_lp.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__dfxtp_lp CLK D VGND VNB VPB VPWR Q
 M1000 a_263_409# a_27_57# a_270_57# VNB nshort w=420000u l=150000u
@@ -62,4 +77,3 @@
 M1029 VGND a_1005_99# a_902_125# VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/diode/sky130_fd_sc_lp__diode_0.spice b/cells/diode/sky130_fd_sc_lp__diode_0.spice
index d68a063..5783143 100644
--- a/cells/diode/sky130_fd_sc_lp__diode_0.spice
+++ b/cells/diode/sky130_fd_sc_lp__diode_0.spice
@@ -1,5 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__diode_0.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__diode_0 DIODE VGND VNB VPB VPWR
 .ends
-
diff --git a/cells/diode/sky130_fd_sc_lp__diode_1.spice b/cells/diode/sky130_fd_sc_lp__diode_1.spice
index b18494b..173c161 100644
--- a/cells/diode/sky130_fd_sc_lp__diode_1.spice
+++ b/cells/diode/sky130_fd_sc_lp__diode_1.spice
@@ -1,5 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__diode_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__diode_1 DIODE VGND VNB VPB VPWR
 .ends
-
diff --git a/cells/dlclkp/sky130_fd_sc_lp__dlclkp_1.spice b/cells/dlclkp/sky130_fd_sc_lp__dlclkp_1.spice
index 720f07d..33f27ec 100644
--- a/cells/dlclkp/sky130_fd_sc_lp__dlclkp_1.spice
+++ b/cells/dlclkp/sky130_fd_sc_lp__dlclkp_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__dlclkp_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__dlclkp_1 CLK GATE VGND VNB VPB VPWR GCLK
 M1000 a_80_269# a_315_382# a_273_480# VPB phighvt w=640000u l=150000u
@@ -42,4 +57,3 @@
 M1019 VPWR a_80_269# a_27_367# VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=3.339e+11p ps=3.05e+06u
 .ends
-
diff --git a/cells/dlclkp/sky130_fd_sc_lp__dlclkp_2.spice b/cells/dlclkp/sky130_fd_sc_lp__dlclkp_2.spice
index 53d2323..e4db4bd 100644
--- a/cells/dlclkp/sky130_fd_sc_lp__dlclkp_2.spice
+++ b/cells/dlclkp/sky130_fd_sc_lp__dlclkp_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__dlclkp_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__dlclkp_2 CLK GATE VGND VNB VPB VPWR GCLK
 M1000 a_1039_367# CLK VPWR VPB phighvt w=640000u l=150000u
@@ -46,4 +61,3 @@
 M1021 a_416_81# a_284_367# a_78_269# VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/dlclkp/sky130_fd_sc_lp__dlclkp_4.spice b/cells/dlclkp/sky130_fd_sc_lp__dlclkp_4.spice
index 4b1836b..545931b 100644
--- a/cells/dlclkp/sky130_fd_sc_lp__dlclkp_4.spice
+++ b/cells/dlclkp/sky130_fd_sc_lp__dlclkp_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__dlclkp_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__dlclkp_4 CLK GATE VGND VNB VPB VPWR GCLK
 M1000 a_1078_367# CLK VPWR VPB phighvt w=1.26e+06u l=150000u
@@ -54,4 +69,3 @@
 M1025 VPWR a_73_269# a_27_367# VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=3.339e+11p ps=3.05e+06u
 .ends
-
diff --git a/cells/dlclkp/sky130_fd_sc_lp__dlclkp_lp.spice b/cells/dlclkp/sky130_fd_sc_lp__dlclkp_lp.spice
index 47bbeb1..3dc8fc9 100644
--- a/cells/dlclkp/sky130_fd_sc_lp__dlclkp_lp.spice
+++ b/cells/dlclkp/sky130_fd_sc_lp__dlclkp_lp.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__dlclkp_lp.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__dlclkp_lp CLK GATE VGND VNB VPB VPWR GCLK
 M1000 VGND a_80_21# a_110_47# VNB nshort w=420000u l=150000u
@@ -50,4 +65,3 @@
 M1023 a_584_21# a_352_419# a_700_47# VNB nshort w=420000u l=150000u
 +  ad=1.197e+11p pd=1.41e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/dlrbn/sky130_fd_sc_lp__dlrbn_1.spice b/cells/dlrbn/sky130_fd_sc_lp__dlrbn_1.spice
index 5319694..efaa420 100644
--- a/cells/dlrbn/sky130_fd_sc_lp__dlrbn_1.spice
+++ b/cells/dlrbn/sky130_fd_sc_lp__dlrbn_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__dlrbn_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__dlrbn_1 D GATE_N RESET_B VGND VNB VPB VPWR Q Q_N
 M1000 a_630_167# a_112_70# a_625_377# VPB phighvt w=420000u l=150000u
@@ -50,4 +65,3 @@
 M1023 a_1394_367# a_955_271# VGND VNB nshort w=420000u l=150000u
 +  ad=1.512e+11p pd=1.56e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/dlrbn/sky130_fd_sc_lp__dlrbn_2.spice b/cells/dlrbn/sky130_fd_sc_lp__dlrbn_2.spice
index dba41d1..28e8d0a 100644
--- a/cells/dlrbn/sky130_fd_sc_lp__dlrbn_2.spice
+++ b/cells/dlrbn/sky130_fd_sc_lp__dlrbn_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__dlrbn_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__dlrbn_2 D GATE_N RESET_B VGND VNB VPB VPWR Q Q_N
 M1000 Q a_942_252# VPWR VPB phighvt w=1.26e+06u l=150000u
@@ -58,4 +73,3 @@
 M1027 a_1184_60# a_591_155# a_942_252# VNB nshort w=840000u l=150000u
 +  ad=0p pd=0u as=2.226e+11p ps=2.21e+06u
 .ends
-
diff --git a/cells/dlrbn/sky130_fd_sc_lp__dlrbn_lp.spice b/cells/dlrbn/sky130_fd_sc_lp__dlrbn_lp.spice
index bd691f8..ebde921 100644
--- a/cells/dlrbn/sky130_fd_sc_lp__dlrbn_lp.spice
+++ b/cells/dlrbn/sky130_fd_sc_lp__dlrbn_lp.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__dlrbn_lp.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__dlrbn_lp D GATE_N RESET_B VGND VNB VPB VPWR Q Q_N
 M1000 a_796_419# a_451_419# a_698_419# VPB phighvt w=1e+06u l=250000u
@@ -62,4 +77,3 @@
 M1029 VGND a_952_305# a_950_47# VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/dlrbp/sky130_fd_sc_lp__dlrbp_1.spice b/cells/dlrbp/sky130_fd_sc_lp__dlrbp_1.spice
index 53eb8d2..896a172 100644
--- a/cells/dlrbp/sky130_fd_sc_lp__dlrbp_1.spice
+++ b/cells/dlrbp/sky130_fd_sc_lp__dlrbp_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__dlrbp_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__dlrbp_1 D GATE RESET_B VGND VNB VPB VPWR Q Q_N
 M1000 Q a_776_93# VPWR VPB phighvt w=1.26e+06u l=150000u
@@ -50,4 +65,3 @@
 M1023 a_218_483# a_49_93# VGND VNB nshort w=420000u l=150000u
 +  ad=1.113e+11p pd=1.37e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/dlrbp/sky130_fd_sc_lp__dlrbp_2.spice b/cells/dlrbp/sky130_fd_sc_lp__dlrbp_2.spice
index 48c60eb..5f44fda 100644
--- a/cells/dlrbp/sky130_fd_sc_lp__dlrbp_2.spice
+++ b/cells/dlrbp/sky130_fd_sc_lp__dlrbp_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__dlrbp_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__dlrbp_2 D GATE RESET_B VGND VNB VPB VPWR Q Q_N
 M1000 a_823_25# a_1023_405# a_981_503# VPB phighvt w=420000u l=150000u
@@ -58,4 +73,3 @@
 M1027 Q_N a_80_21# VPWR VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/dlrbp/sky130_fd_sc_lp__dlrbp_lp.spice b/cells/dlrbp/sky130_fd_sc_lp__dlrbp_lp.spice
index e6250d2..b826e34 100644
--- a/cells/dlrbp/sky130_fd_sc_lp__dlrbp_lp.spice
+++ b/cells/dlrbp/sky130_fd_sc_lp__dlrbp_lp.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__dlrbp_lp.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__dlrbp_lp D GATE RESET_B VGND VNB VPB VPWR Q Q_N
 M1000 a_272_419# GATE a_272_112# VNB nshort w=420000u l=150000u
@@ -62,4 +77,3 @@
 M1029 a_1701_74# a_1028_23# a_1614_74# VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=1.197e+11p ps=1.41e+06u
 .ends
-
diff --git a/cells/dlrtn/sky130_fd_sc_lp__dlrtn_1.spice b/cells/dlrtn/sky130_fd_sc_lp__dlrtn_1.spice
index 2e06f55..e6035da 100644
--- a/cells/dlrtn/sky130_fd_sc_lp__dlrtn_1.spice
+++ b/cells/dlrtn/sky130_fd_sc_lp__dlrtn_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__dlrtn_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__dlrtn_1 D GATE_N RESET_B VGND VNB VPB VPWR Q
 M1000 a_820_99# a_670_125# VPWR VPB phighvt w=1.26e+06u l=150000u
@@ -42,4 +57,3 @@
 M1019 VGND a_820_99# a_756_125# VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/dlrtn/sky130_fd_sc_lp__dlrtn_2.spice b/cells/dlrtn/sky130_fd_sc_lp__dlrtn_2.spice
index 6123156..19c3594 100644
--- a/cells/dlrtn/sky130_fd_sc_lp__dlrtn_2.spice
+++ b/cells/dlrtn/sky130_fd_sc_lp__dlrtn_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__dlrtn_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__dlrtn_2 D GATE_N RESET_B VGND VNB VPB VPWR Q
 M1000 VPWR a_221_70# a_372_397# VPB phighvt w=640000u l=150000u
@@ -46,4 +61,3 @@
 M1021 VGND a_776_99# a_726_125# VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/dlrtn/sky130_fd_sc_lp__dlrtn_4.spice b/cells/dlrtn/sky130_fd_sc_lp__dlrtn_4.spice
index 98bbaaa..a7f9f25 100644
--- a/cells/dlrtn/sky130_fd_sc_lp__dlrtn_4.spice
+++ b/cells/dlrtn/sky130_fd_sc_lp__dlrtn_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__dlrtn_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__dlrtn_4 D GATE_N RESET_B VGND VNB VPB VPWR Q
 M1000 a_725_125# a_357_365# a_639_125# VNB nshort w=420000u l=150000u
@@ -54,4 +69,3 @@
 M1025 VPWR a_789_99# Q VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/dlrtn/sky130_fd_sc_lp__dlrtn_lp.spice b/cells/dlrtn/sky130_fd_sc_lp__dlrtn_lp.spice
index 9b664aa..e0b4d9e 100644
--- a/cells/dlrtn/sky130_fd_sc_lp__dlrtn_lp.spice
+++ b/cells/dlrtn/sky130_fd_sc_lp__dlrtn_lp.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__dlrtn_lp.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__dlrtn_lp D GATE_N RESET_B VGND VNB VPB VPWR Q
 M1000 VPWR D a_27_47# VPB phighvt w=1e+06u l=250000u
@@ -50,4 +65,3 @@
 M1023 a_901_415# a_264_415# a_744_415# VPB phighvt w=1e+06u l=250000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/dlrtp/sky130_fd_sc_lp__dlrtp_1.spice b/cells/dlrtp/sky130_fd_sc_lp__dlrtp_1.spice
index 48ff4fa..5115524 100644
--- a/cells/dlrtp/sky130_fd_sc_lp__dlrtp_1.spice
+++ b/cells/dlrtp/sky130_fd_sc_lp__dlrtp_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__dlrtp_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__dlrtp_1 D GATE RESET_B VGND VNB VPB VPWR Q
 M1000 VGND D a_41_464# VNB nshort w=420000u l=150000u
@@ -42,4 +57,3 @@
 M1019 VGND RESET_B a_1056_73# VNB nshort w=840000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/dlrtp/sky130_fd_sc_lp__dlrtp_2.spice b/cells/dlrtp/sky130_fd_sc_lp__dlrtp_2.spice
index 917f13f..5f45868 100644
--- a/cells/dlrtp/sky130_fd_sc_lp__dlrtp_2.spice
+++ b/cells/dlrtp/sky130_fd_sc_lp__dlrtp_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__dlrtp_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__dlrtp_2 D GATE RESET_B VGND VNB VPB VPWR Q
 M1000 VPWR a_796_21# a_785_479# VPB phighvt w=420000u l=150000u
@@ -46,4 +61,3 @@
 M1021 VGND a_251_475# a_383_479# VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=1.197e+11p ps=1.41e+06u
 .ends
-
diff --git a/cells/dlrtp/sky130_fd_sc_lp__dlrtp_4.spice b/cells/dlrtp/sky130_fd_sc_lp__dlrtp_4.spice
index 06b27d9..f4956cd 100644
--- a/cells/dlrtp/sky130_fd_sc_lp__dlrtp_4.spice
+++ b/cells/dlrtp/sky130_fd_sc_lp__dlrtp_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__dlrtp_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__dlrtp_4 D GATE RESET_B VGND VNB VPB VPWR Q
 M1000 VPWR a_267_464# a_414_47# VPB phighvt w=640000u l=150000u
@@ -54,4 +69,3 @@
 M1025 a_267_464# GATE VGND VNB nshort w=420000u l=150000u
 +  ad=1.113e+11p pd=1.37e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/dlrtp/sky130_fd_sc_lp__dlrtp_lp.spice b/cells/dlrtp/sky130_fd_sc_lp__dlrtp_lp.spice
index 2f4acb1..91a935f 100644
--- a/cells/dlrtp/sky130_fd_sc_lp__dlrtp_lp.spice
+++ b/cells/dlrtp/sky130_fd_sc_lp__dlrtp_lp.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__dlrtp_lp.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__dlrtp_lp D GATE RESET_B VGND VNB VPB VPWR Q
 M1000 VPWR a_638_73# a_800_343# VPB phighvt w=640000u l=150000u
@@ -62,4 +77,3 @@
 M1029 a_862_101# a_1208_75# VGND VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/dlrtp/sky130_fd_sc_lp__dlrtp_lp2.spice b/cells/dlrtp/sky130_fd_sc_lp__dlrtp_lp2.spice
index 4441120..a52e99a 100644
--- a/cells/dlrtp/sky130_fd_sc_lp__dlrtp_lp2.spice
+++ b/cells/dlrtp/sky130_fd_sc_lp__dlrtp_lp2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__dlrtp_lp2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__dlrtp_lp2 D GATE RESET_B VGND VNB VPB VPWR Q
 M1000 Q a_898_21# VPWR VPB phighvt w=1e+06u l=250000u
@@ -50,4 +65,3 @@
 M1023 VGND a_256_405# a_500_47# VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/dlxbn/sky130_fd_sc_lp__dlxbn_1.spice b/cells/dlxbn/sky130_fd_sc_lp__dlxbn_1.spice
index 1161413..60faf04 100644
--- a/cells/dlxbn/sky130_fd_sc_lp__dlxbn_1.spice
+++ b/cells/dlxbn/sky130_fd_sc_lp__dlxbn_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__dlxbn_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__dlxbn_1 D GATE_N VGND VNB VPB VPWR Q Q_N
 M1000 a_626_47# a_363_483# a_584_483# VPB phighvt w=640000u l=150000u
@@ -46,4 +61,3 @@
 M1021 a_584_483# a_34_407# VPWR VPB phighvt w=640000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/dlxbn/sky130_fd_sc_lp__dlxbn_2.spice b/cells/dlxbn/sky130_fd_sc_lp__dlxbn_2.spice
index 25de414..8abc894 100644
--- a/cells/dlxbn/sky130_fd_sc_lp__dlxbn_2.spice
+++ b/cells/dlxbn/sky130_fd_sc_lp__dlxbn_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__dlxbn_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__dlxbn_2 D GATE_N VGND VNB VPB VPWR Q Q_N
 M1000 VPWR a_214_136# a_354_47# VPB phighvt w=640000u l=150000u
@@ -54,4 +69,3 @@
 M1025 VGND a_805_21# Q VNB nshort w=840000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/dlxbp/sky130_fd_sc_lp__dlxbp_1.spice b/cells/dlxbp/sky130_fd_sc_lp__dlxbp_1.spice
index 1e36ffd..c403423 100644
--- a/cells/dlxbp/sky130_fd_sc_lp__dlxbp_1.spice
+++ b/cells/dlxbp/sky130_fd_sc_lp__dlxbp_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__dlxbp_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__dlxbp_1 D GATE VGND VNB VPB VPWR Q Q_N
 M1000 Q_N a_1266_147# VPWR VPB phighvt w=1.26e+06u l=150000u
@@ -46,4 +61,3 @@
 M1021 VGND D a_46_62# VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=1.113e+11p ps=1.37e+06u
 .ends
-
diff --git a/cells/dlxbp/sky130_fd_sc_lp__dlxbp_lp.spice b/cells/dlxbp/sky130_fd_sc_lp__dlxbp_lp.spice
index 4e658a9..52e397b 100644
--- a/cells/dlxbp/sky130_fd_sc_lp__dlxbp_lp.spice
+++ b/cells/dlxbp/sky130_fd_sc_lp__dlxbp_lp.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__dlxbp_lp.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__dlxbp_lp D GATE VGND VNB VPB VPWR Q Q_N
 M1000 a_1597_361# a_969_407# VPWR VPB phighvt w=640000u l=150000u
@@ -74,4 +89,3 @@
 M1035 a_1584_131# a_969_407# VGND VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/dlxbp/sky130_fd_sc_lp__dlxbp_lp2.spice b/cells/dlxbp/sky130_fd_sc_lp__dlxbp_lp2.spice
index 6eb09a8..4cd413f 100644
--- a/cells/dlxbp/sky130_fd_sc_lp__dlxbp_lp2.spice
+++ b/cells/dlxbp/sky130_fd_sc_lp__dlxbp_lp2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__dlxbp_lp2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__dlxbp_lp2 D GATE VGND VNB VPB VPWR Q Q_N
 M1000 VGND D a_114_57# VNB nshort w=420000u l=150000u
@@ -60,4 +75,3 @@
 M1028 Q_N a_1662_57# VPWR VPB phighvt w=1e+06u l=250000u
 +  ad=2.85e+11p pd=2.57e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/dlxtn/sky130_fd_sc_lp__dlxtn_1.spice b/cells/dlxtn/sky130_fd_sc_lp__dlxtn_1.spice
index 5f81ef9..29b957b 100644
--- a/cells/dlxtn/sky130_fd_sc_lp__dlxtn_1.spice
+++ b/cells/dlxtn/sky130_fd_sc_lp__dlxtn_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__dlxtn_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__dlxtn_1 D GATE_N VGND VNB VPB VPWR Q
 M1000 VPWR a_228_129# a_342_481# VPB phighvt w=640000u l=150000u
@@ -38,4 +53,3 @@
 M1017 a_842_413# a_656_481# VGND VNB nshort w=840000u l=150000u
 +  ad=2.226e+11p pd=2.21e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/dlxtn/sky130_fd_sc_lp__dlxtn_2.spice b/cells/dlxtn/sky130_fd_sc_lp__dlxtn_2.spice
index cac21c0..99651b2 100644
--- a/cells/dlxtn/sky130_fd_sc_lp__dlxtn_2.spice
+++ b/cells/dlxtn/sky130_fd_sc_lp__dlxtn_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__dlxtn_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__dlxtn_2 D GATE_N VGND VNB VPB VPWR Q
 M1000 a_849_419# a_663_481# VPWR VPB phighvt w=1.26e+06u l=150000u
@@ -42,4 +57,3 @@
 M1019 a_669_47# a_57_130# VGND VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/dlxtn/sky130_fd_sc_lp__dlxtn_4.spice b/cells/dlxtn/sky130_fd_sc_lp__dlxtn_4.spice
index d74a762..e7b8990 100644
--- a/cells/dlxtn/sky130_fd_sc_lp__dlxtn_4.spice
+++ b/cells/dlxtn/sky130_fd_sc_lp__dlxtn_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__dlxtn_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__dlxtn_4 D GATE_N VGND VNB VPB VPWR Q
 M1000 VGND a_795_423# Q VNB nshort w=840000u l=150000u
@@ -50,4 +65,3 @@
 M1023 VGND a_200_481# a_310_485# VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=1.113e+11p ps=1.37e+06u
 .ends
-
diff --git a/cells/dlxtp/sky130_fd_sc_lp__dlxtp_1.spice b/cells/dlxtp/sky130_fd_sc_lp__dlxtp_1.spice
index 6eeee3e..5791bcb 100644
--- a/cells/dlxtp/sky130_fd_sc_lp__dlxtp_1.spice
+++ b/cells/dlxtp/sky130_fd_sc_lp__dlxtp_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__dlxtp_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__dlxtp_1 D GATE VGND VNB VPB VPWR Q
 M1000 VPWR a_196_425# a_317_461# VPB phighvt w=640000u l=150000u
@@ -38,4 +53,3 @@
 M1017 a_596_419# a_317_461# a_530_125# VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/dlxtp/sky130_fd_sc_lp__dlxtp_lp.spice b/cells/dlxtp/sky130_fd_sc_lp__dlxtp_lp.spice
index 3fcd7d6..771cb27 100644
--- a/cells/dlxtp/sky130_fd_sc_lp__dlxtp_lp.spice
+++ b/cells/dlxtp/sky130_fd_sc_lp__dlxtp_lp.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__dlxtp_lp.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__dlxtp_lp D GATE VGND VNB VPB VPWR Q
 M1000 VPWR GATE a_114_470# VPB phighvt w=640000u l=150000u
@@ -58,4 +73,3 @@
 M1027 VPWR a_1027_407# a_933_535# VPB phighvt w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/dlxtp/sky130_fd_sc_lp__dlxtp_lp2.spice b/cells/dlxtp/sky130_fd_sc_lp__dlxtp_lp2.spice
index f173710..698b735 100644
--- a/cells/dlxtp/sky130_fd_sc_lp__dlxtp_lp2.spice
+++ b/cells/dlxtp/sky130_fd_sc_lp__dlxtp_lp2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__dlxtp_lp2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__dlxtp_lp2 D GATE VGND VNB VPB VPWR Q
 M1000 a_880_47# a_240_409# a_778_47# VNB nshort w=420000u l=150000u
@@ -48,4 +63,3 @@
 M1022 a_1207_47# a_778_47# VGND VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/dlybuf4s15kapwr/sky130_fd_sc_lp__dlybuf4s15kapwr_1.spice b/cells/dlybuf4s15kapwr/sky130_fd_sc_lp__dlybuf4s15kapwr_1.spice
index 2f192da..cb74733 100644
--- a/cells/dlybuf4s15kapwr/sky130_fd_sc_lp__dlybuf4s15kapwr_1.spice
+++ b/cells/dlybuf4s15kapwr/sky130_fd_sc_lp__dlybuf4s15kapwr_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__dlybuf4s15kapwr_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__dlybuf4s15kapwr_1 A KAPWR VGND VNB VPB VPWR X
 M1000 X a_394_52# KAPWR VPB phighvt w=1.26e+06u l=150000u
@@ -18,4 +33,3 @@
 M1007 KAPWR A a_27_52# VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=3.339e+11p ps=3.05e+06u
 .ends
-
diff --git a/cells/dlybuf4s15kapwr/sky130_fd_sc_lp__dlybuf4s15kapwr_2.spice b/cells/dlybuf4s15kapwr/sky130_fd_sc_lp__dlybuf4s15kapwr_2.spice
index 22f4f09..b53cff5 100644
--- a/cells/dlybuf4s15kapwr/sky130_fd_sc_lp__dlybuf4s15kapwr_2.spice
+++ b/cells/dlybuf4s15kapwr/sky130_fd_sc_lp__dlybuf4s15kapwr_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__dlybuf4s15kapwr_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__dlybuf4s15kapwr_2 A KAPWR VGND VNB VPB VPWR X
 M1000 VGND a_394_52# X VNB nshort w=420000u l=150000u
@@ -22,4 +37,3 @@
 M1009 KAPWR A a_27_52# VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=3.339e+11p ps=3.05e+06u
 .ends
-
diff --git a/cells/dlybuf4s18kapwr/sky130_fd_sc_lp__dlybuf4s18kapwr_1.spice b/cells/dlybuf4s18kapwr/sky130_fd_sc_lp__dlybuf4s18kapwr_1.spice
index b9e8d3c..caf4efa 100644
--- a/cells/dlybuf4s18kapwr/sky130_fd_sc_lp__dlybuf4s18kapwr_1.spice
+++ b/cells/dlybuf4s18kapwr/sky130_fd_sc_lp__dlybuf4s18kapwr_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__dlybuf4s18kapwr_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__dlybuf4s18kapwr_1 A KAPWR VGND VNB VPB VPWR X
 M1000 a_282_52# a_27_52# KAPWR VPB phighvt w=1e+06u l=180000u
@@ -18,4 +33,3 @@
 M1007 KAPWR A a_27_52# VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=3.339e+11p ps=3.05e+06u
 .ends
-
diff --git a/cells/dlybuf4s18kapwr/sky130_fd_sc_lp__dlybuf4s18kapwr_2.spice b/cells/dlybuf4s18kapwr/sky130_fd_sc_lp__dlybuf4s18kapwr_2.spice
index 36f44d4..c6f840a 100644
--- a/cells/dlybuf4s18kapwr/sky130_fd_sc_lp__dlybuf4s18kapwr_2.spice
+++ b/cells/dlybuf4s18kapwr/sky130_fd_sc_lp__dlybuf4s18kapwr_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__dlybuf4s18kapwr_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__dlybuf4s18kapwr_2 A KAPWR VGND VNB VPB VPWR X
 M1000 a_282_52# a_27_52# KAPWR VPB phighvt w=1e+06u l=180000u
@@ -22,4 +37,3 @@
 M1009 KAPWR A a_27_52# VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=3.339e+11p ps=3.05e+06u
 .ends
-
diff --git a/cells/dlybuf4s25kapwr/sky130_fd_sc_lp__dlybuf4s25kapwr_1.spice b/cells/dlybuf4s25kapwr/sky130_fd_sc_lp__dlybuf4s25kapwr_1.spice
index 2181699..f55dd40 100644
--- a/cells/dlybuf4s25kapwr/sky130_fd_sc_lp__dlybuf4s25kapwr_1.spice
+++ b/cells/dlybuf4s25kapwr/sky130_fd_sc_lp__dlybuf4s25kapwr_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__dlybuf4s25kapwr_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__dlybuf4s25kapwr_1 A KAPWR VGND VNB VPB VPWR X
 M1000 X a_394_52# KAPWR VPB phighvt w=1.26e+06u l=150000u
@@ -18,4 +33,3 @@
 M1007 KAPWR A a_27_52# VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=3.339e+11p ps=3.05e+06u
 .ends
-
diff --git a/cells/dlybuf4s25kapwr/sky130_fd_sc_lp__dlybuf4s25kapwr_2.spice b/cells/dlybuf4s25kapwr/sky130_fd_sc_lp__dlybuf4s25kapwr_2.spice
index 3844fb7..900203c 100644
--- a/cells/dlybuf4s25kapwr/sky130_fd_sc_lp__dlybuf4s25kapwr_2.spice
+++ b/cells/dlybuf4s25kapwr/sky130_fd_sc_lp__dlybuf4s25kapwr_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__dlybuf4s25kapwr_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__dlybuf4s25kapwr_2 A KAPWR VGND VNB VPB VPWR X
 M1000 VGND a_394_52# X VNB nshort w=420000u l=150000u
@@ -22,4 +37,3 @@
 M1009 KAPWR A a_27_52# VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=3.339e+11p ps=3.05e+06u
 .ends
-
diff --git a/cells/dlybuf4s50kapwr/sky130_fd_sc_lp__dlybuf4s50kapwr_1.spice b/cells/dlybuf4s50kapwr/sky130_fd_sc_lp__dlybuf4s50kapwr_1.spice
index 6842486..e2591e0 100644
--- a/cells/dlybuf4s50kapwr/sky130_fd_sc_lp__dlybuf4s50kapwr_1.spice
+++ b/cells/dlybuf4s50kapwr/sky130_fd_sc_lp__dlybuf4s50kapwr_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__dlybuf4s50kapwr_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__dlybuf4s50kapwr_1 A KAPWR VGND VNB VPB VPWR X
 M1000 a_282_52# a_27_52# KAPWR VPB phighvt w=1e+06u l=500000u
@@ -18,4 +33,3 @@
 M1007 KAPWR A a_27_52# VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=3.339e+11p ps=3.05e+06u
 .ends
-
diff --git a/cells/dlybuf4s50kapwr/sky130_fd_sc_lp__dlybuf4s50kapwr_2.spice b/cells/dlybuf4s50kapwr/sky130_fd_sc_lp__dlybuf4s50kapwr_2.spice
index ea860f9..6e081a8 100644
--- a/cells/dlybuf4s50kapwr/sky130_fd_sc_lp__dlybuf4s50kapwr_2.spice
+++ b/cells/dlybuf4s50kapwr/sky130_fd_sc_lp__dlybuf4s50kapwr_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__dlybuf4s50kapwr_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__dlybuf4s50kapwr_2 A KAPWR VGND VNB VPB VPWR X
 M1000 a_282_52# a_27_52# KAPWR VPB phighvt w=1e+06u l=500000u
@@ -22,4 +37,3 @@
 M1009 KAPWR A a_27_52# VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=3.339e+11p ps=3.05e+06u
 .ends
-
diff --git a/cells/dlygate4s15/sky130_fd_sc_lp__dlygate4s15_1.spice b/cells/dlygate4s15/sky130_fd_sc_lp__dlygate4s15_1.spice
index bd36ca0..29d23b1 100644
--- a/cells/dlygate4s15/sky130_fd_sc_lp__dlygate4s15_1.spice
+++ b/cells/dlygate4s15/sky130_fd_sc_lp__dlygate4s15_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__dlygate4s15_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__dlygate4s15_1 A VGND VNB VPB VPWR X
 M1000 a_288_52# a_27_52# VPWR VPB phighvt w=420000u l=150000u
@@ -18,4 +33,3 @@
 M1007 VPWR a_288_52# a_405_136# VPB phighvt w=420000u l=150000u
 +  ad=0p pd=0u as=1.113e+11p ps=1.37e+06u
 .ends
-
diff --git a/cells/dlygate4s18/sky130_fd_sc_lp__dlygate4s18_1.spice b/cells/dlygate4s18/sky130_fd_sc_lp__dlygate4s18_1.spice
index 2c00809..f6ff875 100644
--- a/cells/dlygate4s18/sky130_fd_sc_lp__dlygate4s18_1.spice
+++ b/cells/dlygate4s18/sky130_fd_sc_lp__dlygate4s18_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__dlygate4s18_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__dlygate4s18_1 A VGND VNB VPB VPWR X
 M1000 a_288_52# a_27_52# VGND VNB nshort w=420000u l=180000u
@@ -18,4 +33,3 @@
 M1007 VPWR a_288_52# a_405_136# VPB phighvt w=420000u l=180000u
 +  ad=0p pd=0u as=1.113e+11p ps=1.37e+06u
 .ends
-
diff --git a/cells/dlygate4s50/sky130_fd_sc_lp__dlygate4s50_1.spice b/cells/dlygate4s50/sky130_fd_sc_lp__dlygate4s50_1.spice
index d150555..940b1b2 100644
--- a/cells/dlygate4s50/sky130_fd_sc_lp__dlygate4s50_1.spice
+++ b/cells/dlygate4s50/sky130_fd_sc_lp__dlygate4s50_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__dlygate4s50_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__dlygate4s50_1 A VGND VNB VPB VPWR X
 M1000 X a_405_136# VGND VNB nshort w=840000u l=150000u
@@ -18,4 +33,3 @@
 M1007 VPWR a_288_52# a_405_136# VPB phighvt w=420000u l=500000u
 +  ad=0p pd=0u as=1.113e+11p ps=1.37e+06u
 .ends
-
diff --git a/cells/dlymetal6s2s/sky130_fd_sc_lp__dlymetal6s2s_1.spice b/cells/dlymetal6s2s/sky130_fd_sc_lp__dlymetal6s2s_1.spice
index 6823ac6..15a4229 100644
--- a/cells/dlymetal6s2s/sky130_fd_sc_lp__dlymetal6s2s_1.spice
+++ b/cells/dlymetal6s2s/sky130_fd_sc_lp__dlymetal6s2s_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__dlymetal6s2s_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__dlymetal6s2s_1 A VGND VNB VPB VPWR X
 M1000 a_496_47# a_315_131# VPWR VPB phighvt w=1.26e+06u l=150000u
@@ -26,4 +41,3 @@
 M1011 VGND X a_315_131# VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=1.113e+11p ps=1.37e+06u
 .ends
-
diff --git a/cells/dlymetal6s4s/sky130_fd_sc_lp__dlymetal6s4s_1.spice b/cells/dlymetal6s4s/sky130_fd_sc_lp__dlymetal6s4s_1.spice
index 4cb7d21..4a151f9 100644
--- a/cells/dlymetal6s4s/sky130_fd_sc_lp__dlymetal6s4s_1.spice
+++ b/cells/dlymetal6s4s/sky130_fd_sc_lp__dlymetal6s4s_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__dlymetal6s4s_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__dlymetal6s4s_1 A VGND VNB VPB VPWR X
 M1000 X a_315_131# VPWR VPB phighvt w=1.26e+06u l=150000u
@@ -26,4 +41,3 @@
 M1011 VGND a_208_47# a_315_131# VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=1.113e+11p ps=1.37e+06u
 .ends
-
diff --git a/cells/dlymetal6s6s/sky130_fd_sc_lp__dlymetal6s6s_1.spice b/cells/dlymetal6s6s/sky130_fd_sc_lp__dlymetal6s6s_1.spice
index 89840a8..326518a 100644
--- a/cells/dlymetal6s6s/sky130_fd_sc_lp__dlymetal6s6s_1.spice
+++ b/cells/dlymetal6s6s/sky130_fd_sc_lp__dlymetal6s6s_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__dlymetal6s6s_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__dlymetal6s6s_1 A VGND VNB VPB VPWR X
 M1000 a_496_47# a_315_131# VPWR VPB phighvt w=1.26e+06u l=150000u
@@ -26,4 +41,3 @@
 M1011 VGND a_208_47# a_315_131# VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=1.113e+11p ps=1.37e+06u
 .ends
-
diff --git a/cells/ebufn/sky130_fd_sc_lp__ebufn_1.spice b/cells/ebufn/sky130_fd_sc_lp__ebufn_1.spice
index 3599744..4eac6d0 100644
--- a/cells/ebufn/sky130_fd_sc_lp__ebufn_1.spice
+++ b/cells/ebufn/sky130_fd_sc_lp__ebufn_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__ebufn_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__ebufn_1 A TE_B VGND VNB VPB VPWR Z
 M1000 VPWR TE_B a_165_367# VPB phighvt w=1.26e+06u l=150000u
@@ -18,4 +33,3 @@
 M1007 a_165_367# a_105_263# Z VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=3.591e+11p ps=3.09e+06u
 .ends
-
diff --git a/cells/ebufn/sky130_fd_sc_lp__ebufn_2.spice b/cells/ebufn/sky130_fd_sc_lp__ebufn_2.spice
index 6d6d71b..c175c39 100644
--- a/cells/ebufn/sky130_fd_sc_lp__ebufn_2.spice
+++ b/cells/ebufn/sky130_fd_sc_lp__ebufn_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__ebufn_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__ebufn_2 A TE_B VGND VNB VPB VPWR Z
 M1000 a_39_367# TE_B VPWR VPB phighvt w=1.26e+06u l=150000u
@@ -26,4 +41,3 @@
 M1011 a_96_21# A VPWR VPB phighvt w=640000u l=150000u
 +  ad=1.824e+11p pd=1.85e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/ebufn/sky130_fd_sc_lp__ebufn_4.spice b/cells/ebufn/sky130_fd_sc_lp__ebufn_4.spice
index fd9155c..cb7ed9f 100644
--- a/cells/ebufn/sky130_fd_sc_lp__ebufn_4.spice
+++ b/cells/ebufn/sky130_fd_sc_lp__ebufn_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__ebufn_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__ebufn_4 A TE_B VGND VNB VPB VPWR Z
 M1000 Z a_84_21# a_27_47# VNB nshort w=840000u l=150000u
@@ -42,4 +57,3 @@
 M1019 a_84_21# A VGND VNB nshort w=840000u l=150000u
 +  ad=2.394e+11p pd=2.25e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/ebufn/sky130_fd_sc_lp__ebufn_8.spice b/cells/ebufn/sky130_fd_sc_lp__ebufn_8.spice
index 8a79bfb..5c05ed4 100644
--- a/cells/ebufn/sky130_fd_sc_lp__ebufn_8.spice
+++ b/cells/ebufn/sky130_fd_sc_lp__ebufn_8.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__ebufn_8.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__ebufn_8 A TE_B VGND VNB VPB VPWR Z
 M1000 VPWR TE_B a_27_367# VPB phighvt w=1.26e+06u l=150000u
@@ -78,4 +93,3 @@
 M1037 VGND a_772_21# a_27_47# VNB nshort w=840000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/ebufn/sky130_fd_sc_lp__ebufn_lp.spice b/cells/ebufn/sky130_fd_sc_lp__ebufn_lp.spice
index 07f6bdd..08447c7 100644
--- a/cells/ebufn/sky130_fd_sc_lp__ebufn_lp.spice
+++ b/cells/ebufn/sky130_fd_sc_lp__ebufn_lp.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__ebufn_lp.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__ebufn_lp A TE_B VGND VNB VPB VPWR Z
 M1000 VGND A a_122_131# VNB nshort w=420000u l=150000u
@@ -26,4 +41,3 @@
 M1011 a_702_401# TE_B VPWR VPB phighvt w=640000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/ebufn/sky130_fd_sc_lp__ebufn_lp2.spice b/cells/ebufn/sky130_fd_sc_lp__ebufn_lp2.spice
index 93ab274..43d2243 100644
--- a/cells/ebufn/sky130_fd_sc_lp__ebufn_lp2.spice
+++ b/cells/ebufn/sky130_fd_sc_lp__ebufn_lp2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__ebufn_lp2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__ebufn_lp2 A TE_B VGND VNB VPB VPWR Z
 M1000 VPWR A a_27_47# VPB phighvt w=1e+06u l=250000u
@@ -22,4 +37,3 @@
 M1009 VPWR TE_B a_475_419# VPB phighvt w=1e+06u l=250000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/edfxbp/sky130_fd_sc_lp__edfxbp_1.spice b/cells/edfxbp/sky130_fd_sc_lp__edfxbp_1.spice
index 8e47f78..f73d337 100644
--- a/cells/edfxbp/sky130_fd_sc_lp__edfxbp_1.spice
+++ b/cells/edfxbp/sky130_fd_sc_lp__edfxbp_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__edfxbp_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__edfxbp_1 CLK D DE VGND VNB VPB VPWR Q Q_N
 M1000 Q_N a_587_350# VGND VNB nshort w=840000u l=150000u
@@ -74,4 +89,3 @@
 M1035 a_1067_65# a_902_396# VGND VNB nshort w=640000u l=150000u
 +  ad=1.824e+11p pd=1.85e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/einvn/sky130_fd_sc_lp__einvn_0.spice b/cells/einvn/sky130_fd_sc_lp__einvn_0.spice
index 7c26b8d..af51a7f 100644
--- a/cells/einvn/sky130_fd_sc_lp__einvn_0.spice
+++ b/cells/einvn/sky130_fd_sc_lp__einvn_0.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__einvn_0.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__einvn_0 A TE_B VGND VNB VPB VPWR Z
 M1000 Z A a_224_481# VPB phighvt w=640000u l=150000u
@@ -14,4 +29,3 @@
 M1005 a_224_141# a_28_141# VGND VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/einvn/sky130_fd_sc_lp__einvn_1.spice b/cells/einvn/sky130_fd_sc_lp__einvn_1.spice
index d8e9ba3..746f321 100644
--- a/cells/einvn/sky130_fd_sc_lp__einvn_1.spice
+++ b/cells/einvn/sky130_fd_sc_lp__einvn_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__einvn_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__einvn_1 A TE_B VGND VNB VPB VPWR Z
 M1000 a_166_73# A Z VNB nshort w=840000u l=150000u
@@ -14,4 +29,3 @@
 M1005 VPWR TE_B a_166_367# VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/einvn/sky130_fd_sc_lp__einvn_2.spice b/cells/einvn/sky130_fd_sc_lp__einvn_2.spice
index 7f49904..4eecd80 100644
--- a/cells/einvn/sky130_fd_sc_lp__einvn_2.spice
+++ b/cells/einvn/sky130_fd_sc_lp__einvn_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__einvn_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__einvn_2 A TE_B VGND VNB VPB VPWR Z
 M1000 a_220_367# A Z VPB phighvt w=1.26e+06u l=150000u
@@ -22,4 +37,3 @@
 M1009 a_220_367# TE_B VPWR VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/einvn/sky130_fd_sc_lp__einvn_4.spice b/cells/einvn/sky130_fd_sc_lp__einvn_4.spice
index fa89425..6967ce3 100644
--- a/cells/einvn/sky130_fd_sc_lp__einvn_4.spice
+++ b/cells/einvn/sky130_fd_sc_lp__einvn_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__einvn_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__einvn_4 A TE_B VGND VNB VPB VPWR Z
 M1000 Z A a_87_367# VPB phighvt w=1.26e+06u l=150000u
@@ -38,4 +53,3 @@
 M1017 a_87_367# TE_B VPWR VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/einvn/sky130_fd_sc_lp__einvn_8.spice b/cells/einvn/sky130_fd_sc_lp__einvn_8.spice
index c6cfd6c..03953d9 100644
--- a/cells/einvn/sky130_fd_sc_lp__einvn_8.spice
+++ b/cells/einvn/sky130_fd_sc_lp__einvn_8.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__einvn_8.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__einvn_8 A TE_B VGND VNB VPB VPWR Z
 M1000 a_305_47# A Z VNB nshort w=840000u l=150000u
@@ -70,4 +85,3 @@
 M1033 a_305_47# a_110_57# VGND VNB nshort w=840000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/einvn/sky130_fd_sc_lp__einvn_lp.spice b/cells/einvn/sky130_fd_sc_lp__einvn_lp.spice
index 49d8727..8d8bd7a 100644
--- a/cells/einvn/sky130_fd_sc_lp__einvn_lp.spice
+++ b/cells/einvn/sky130_fd_sc_lp__einvn_lp.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__einvn_lp.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__einvn_lp A TE_B VGND VNB VPB VPWR Z
 M1000 a_284_148# a_28_148# VGND VNB nshort w=420000u l=150000u
@@ -16,4 +31,3 @@
 M1006 Z A a_252_414# VPB phighvt w=1e+06u l=250000u
 +  ad=2.85e+11p pd=2.57e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/einvn/sky130_fd_sc_lp__einvn_m.spice b/cells/einvn/sky130_fd_sc_lp__einvn_m.spice
index c89cc14..2ca8eeb 100644
--- a/cells/einvn/sky130_fd_sc_lp__einvn_m.spice
+++ b/cells/einvn/sky130_fd_sc_lp__einvn_m.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__einvn_m.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__einvn_m A TE_B VGND VNB VPB VPWR Z
 M1000 a_218_154# a_47_154# VGND VNB nshort w=420000u l=150000u
@@ -14,4 +29,3 @@
 M1005 a_232_535# TE_B VPWR VPB phighvt w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/einvp/sky130_fd_sc_lp__einvp_0.spice b/cells/einvp/sky130_fd_sc_lp__einvp_0.spice
index 152e285..ff95127 100644
--- a/cells/einvp/sky130_fd_sc_lp__einvp_0.spice
+++ b/cells/einvp/sky130_fd_sc_lp__einvp_0.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__einvp_0.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__einvp_0 A TE VGND VNB VPB VPWR Z
 M1000 VPWR TE a_32_70# VPB phighvt w=420000u l=150000u
@@ -14,4 +29,3 @@
 M1005 Z A a_201_70# VNB nshort w=420000u l=150000u
 +  ad=1.113e+11p pd=1.37e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/einvp/sky130_fd_sc_lp__einvp_1.spice b/cells/einvp/sky130_fd_sc_lp__einvp_1.spice
index e8c167d..0876fe2 100644
--- a/cells/einvp/sky130_fd_sc_lp__einvp_1.spice
+++ b/cells/einvp/sky130_fd_sc_lp__einvp_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__einvp_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__einvp_1 A TE VGND VNB VPB VPWR Z
 M1000 a_207_302# TE VPWR VPB phighvt w=420000u l=150000u
@@ -14,4 +29,3 @@
 M1005 a_161_400# A Z VPB phighvt w=1e+06u l=150000u
 +  ad=0p pd=0u as=2.85e+11p ps=2.57e+06u
 .ends
-
diff --git a/cells/einvp/sky130_fd_sc_lp__einvp_2.spice b/cells/einvp/sky130_fd_sc_lp__einvp_2.spice
index cf5641d..1b81c7e 100644
--- a/cells/einvp/sky130_fd_sc_lp__einvp_2.spice
+++ b/cells/einvp/sky130_fd_sc_lp__einvp_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__einvp_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__einvp_2 A TE VGND VNB VPB VPWR Z
 M1000 VGND TE a_30_131# VNB nshort w=420000u l=150000u
@@ -22,4 +37,3 @@
 M1009 Z A a_218_47# VNB nshort w=840000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/einvp/sky130_fd_sc_lp__einvp_4.spice b/cells/einvp/sky130_fd_sc_lp__einvp_4.spice
index 1076ffd..045b106 100644
--- a/cells/einvp/sky130_fd_sc_lp__einvp_4.spice
+++ b/cells/einvp/sky130_fd_sc_lp__einvp_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__einvp_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__einvp_4 A TE VGND VNB VPB VPWR Z
 M1000 VPWR a_35_47# a_301_367# VPB phighvt w=1.26e+06u l=150000u
@@ -38,4 +53,3 @@
 M1017 a_204_47# TE VGND VNB nshort w=840000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/einvp/sky130_fd_sc_lp__einvp_8.spice b/cells/einvp/sky130_fd_sc_lp__einvp_8.spice
index a9da02c..b37fa05 100644
--- a/cells/einvp/sky130_fd_sc_lp__einvp_8.spice
+++ b/cells/einvp/sky130_fd_sc_lp__einvp_8.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__einvp_8.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__einvp_8 A TE VGND VNB VPB VPWR Z
 M1000 VPWR a_182_367# a_365_367# VPB phighvt w=1.26e+06u l=150000u
@@ -70,4 +85,3 @@
 M1033 VPWR a_182_367# a_365_367# VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/einvp/sky130_fd_sc_lp__einvp_lp.spice b/cells/einvp/sky130_fd_sc_lp__einvp_lp.spice
index 869387c..30c76b6 100644
--- a/cells/einvp/sky130_fd_sc_lp__einvp_lp.spice
+++ b/cells/einvp/sky130_fd_sc_lp__einvp_lp.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__einvp_lp.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__einvp_lp A TE VGND VNB VPB VPWR Z
 M1000 a_182_321# TE a_314_101# VNB nshort w=420000u l=150000u
@@ -16,4 +31,3 @@
 M1006 a_134_419# A Z VPB phighvt w=1e+06u l=250000u
 +  ad=0p pd=0u as=2.85e+11p ps=2.57e+06u
 .ends
-
diff --git a/cells/einvp/sky130_fd_sc_lp__einvp_m.spice b/cells/einvp/sky130_fd_sc_lp__einvp_m.spice
index e9a375d..76a6871 100644
--- a/cells/einvp/sky130_fd_sc_lp__einvp_m.spice
+++ b/cells/einvp/sky130_fd_sc_lp__einvp_m.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__einvp_m.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__einvp_m A TE VGND VNB VPB VPWR Z
 M1000 a_227_535# a_42_129# VPWR VPB phighvt w=420000u l=150000u
@@ -14,4 +29,3 @@
 M1005 VPWR TE a_42_129# VPB phighvt w=420000u l=150000u
 +  ad=0p pd=0u as=1.113e+11p ps=1.37e+06u
 .ends
-
diff --git a/cells/fa/sky130_fd_sc_lp__fa_0.spice b/cells/fa/sky130_fd_sc_lp__fa_0.spice
index 5a1b2d3..4efe3f7 100644
--- a/cells/fa/sky130_fd_sc_lp__fa_0.spice
+++ b/cells/fa/sky130_fd_sc_lp__fa_0.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__fa_0.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__fa_0 A B CIN VGND VNB VPB VPWR COUT SUM
 M1000 SUM a_1059_119# VPWR VPB phighvt w=640000u l=150000u
@@ -58,4 +73,3 @@
 M1027 VGND B a_382_119# VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/fa/sky130_fd_sc_lp__fa_1.spice b/cells/fa/sky130_fd_sc_lp__fa_1.spice
index a95f27a..ac52edf 100644
--- a/cells/fa/sky130_fd_sc_lp__fa_1.spice
+++ b/cells/fa/sky130_fd_sc_lp__fa_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__fa_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__fa_1 A B CIN VGND VNB VPB VPWR COUT SUM
 M1000 a_1290_411# B a_1212_411# VPB phighvt w=420000u l=150000u
@@ -58,4 +73,3 @@
 M1027 a_1212_125# CIN a_1118_411# VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/fa/sky130_fd_sc_lp__fa_2.spice b/cells/fa/sky130_fd_sc_lp__fa_2.spice
index 4d28e38..f91a61d 100644
--- a/cells/fa/sky130_fd_sc_lp__fa_2.spice
+++ b/cells/fa/sky130_fd_sc_lp__fa_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__fa_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__fa_2 A B CIN VGND VNB VPB VPWR COUT SUM
 M1000 a_941_419# B VPWR VPB phighvt w=640000u l=150000u
@@ -66,4 +81,3 @@
 M1031 a_941_419# a_395_398# a_84_21# VPB phighvt w=640000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/fa/sky130_fd_sc_lp__fa_4.spice b/cells/fa/sky130_fd_sc_lp__fa_4.spice
index aa3523e..3dd9a5b 100644
--- a/cells/fa/sky130_fd_sc_lp__fa_4.spice
+++ b/cells/fa/sky130_fd_sc_lp__fa_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__fa_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__fa_4 A B CIN VGND VNB VPB VPWR COUT SUM
 M1000 VPWR a_884_131# SUM VPB phighvt w=1.26e+06u l=150000u
@@ -82,4 +97,3 @@
 M1039 a_884_131# a_328_131# a_604_131# VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/fa/sky130_fd_sc_lp__fa_lp.spice b/cells/fa/sky130_fd_sc_lp__fa_lp.spice
index 8c33adb..dbfddc3 100644
--- a/cells/fa/sky130_fd_sc_lp__fa_lp.spice
+++ b/cells/fa/sky130_fd_sc_lp__fa_lp.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__fa_lp.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__fa_lp A B CIN VGND VNB VPB VPWR COUT SUM
 M1000 a_1049_419# B VPWR VPB phighvt w=1e+06u l=250000u
@@ -62,4 +77,3 @@
 M1029 VPWR A a_245_409# VPB phighvt w=1e+06u l=250000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/fa/sky130_fd_sc_lp__fa_m.spice b/cells/fa/sky130_fd_sc_lp__fa_m.spice
index a26f6bf..fe40078 100644
--- a/cells/fa/sky130_fd_sc_lp__fa_m.spice
+++ b/cells/fa/sky130_fd_sc_lp__fa_m.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__fa_m.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__fa_m A B CIN VGND VNB VPB VPWR COUT SUM
 M1000 a_1195_119# CIN a_1101_119# VNB nshort w=420000u l=150000u
@@ -58,4 +73,3 @@
 M1027 a_1101_119# a_80_241# a_843_119# VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/fah/sky130_fd_sc_lp__fah_1.spice b/cells/fah/sky130_fd_sc_lp__fah_1.spice
index fffa9e4..e45a021 100644
--- a/cells/fah/sky130_fd_sc_lp__fah_1.spice
+++ b/cells/fah/sky130_fd_sc_lp__fah_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__fah_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__fah_1 A B CI VGND VNB VPB VPWR COUT SUM
 M1000 VPWR a_2229_269# a_1741_367# VPB phighvt w=1.26e+06u l=150000u
@@ -66,4 +81,3 @@
 M1031 a_1741_367# B a_1022_362# VPB phighvt w=840000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/fahcin/sky130_fd_sc_lp__fahcin_1.spice b/cells/fahcin/sky130_fd_sc_lp__fahcin_1.spice
index 042e518..eb710fe 100644
--- a/cells/fahcin/sky130_fd_sc_lp__fahcin_1.spice
+++ b/cells/fahcin/sky130_fd_sc_lp__fahcin_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__fahcin_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__fahcin_1 A B CIN VGND VNB VPB VPWR COUT SUM
 M1000 a_364_73# B a_256_87# VNB nshort w=640000u l=150000u
@@ -66,4 +81,3 @@
 M1031 a_1926_135# a_555_73# a_1774_367# VNB nshort w=640000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/fahcon/sky130_fd_sc_lp__fahcon_1.spice b/cells/fahcon/sky130_fd_sc_lp__fahcon_1.spice
index c9e2958..ccec7f0 100644
--- a/cells/fahcon/sky130_fd_sc_lp__fahcon_1.spice
+++ b/cells/fahcon/sky130_fd_sc_lp__fahcon_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__fahcon_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__fahcon_1 A B CI VGND VNB VPB VPWR COUT_N SUM
 M1000 a_367_119# a_329_269# a_33_367# VPB phighvt w=840000u l=150000u
@@ -66,4 +81,3 @@
 M1031 a_247_367# B a_359_367# VNB nshort w=640000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/fill/sky130_fd_sc_lp__fill_1.spice b/cells/fill/sky130_fd_sc_lp__fill_1.spice
index 7be1bc3..b6626d3 100644
--- a/cells/fill/sky130_fd_sc_lp__fill_1.spice
+++ b/cells/fill/sky130_fd_sc_lp__fill_1.spice
@@ -1,5 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__fill_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__fill_1 VGND VNB VPB VPWR
 .ends
-
diff --git a/cells/fill/sky130_fd_sc_lp__fill_2.spice b/cells/fill/sky130_fd_sc_lp__fill_2.spice
index 8fd6443..2d559e8 100644
--- a/cells/fill/sky130_fd_sc_lp__fill_2.spice
+++ b/cells/fill/sky130_fd_sc_lp__fill_2.spice
@@ -1,5 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__fill_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__fill_2 VGND VNB VPB VPWR
 .ends
-
diff --git a/cells/fill/sky130_fd_sc_lp__fill_4.spice b/cells/fill/sky130_fd_sc_lp__fill_4.spice
index b7639c3..2f6c258 100644
--- a/cells/fill/sky130_fd_sc_lp__fill_4.spice
+++ b/cells/fill/sky130_fd_sc_lp__fill_4.spice
@@ -1,5 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__fill_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__fill_4 VGND VNB VPB VPWR
 .ends
-
diff --git a/cells/fill/sky130_fd_sc_lp__fill_8.spice b/cells/fill/sky130_fd_sc_lp__fill_8.spice
index 69fdb75..0f6875f 100644
--- a/cells/fill/sky130_fd_sc_lp__fill_8.spice
+++ b/cells/fill/sky130_fd_sc_lp__fill_8.spice
@@ -1,5 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__fill_8.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__fill_8 VGND VNB VPB VPWR
 .ends
-
diff --git a/cells/ha/sky130_fd_sc_lp__ha_0.spice b/cells/ha/sky130_fd_sc_lp__ha_0.spice
index c215fc3..3d2ee00 100644
--- a/cells/ha/sky130_fd_sc_lp__ha_0.spice
+++ b/cells/ha/sky130_fd_sc_lp__ha_0.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__ha_0.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__ha_0 A B VGND VNB VPB VPWR COUT SUM
 M1000 VPWR a_80_60# SUM VPB phighvt w=640000u l=150000u
@@ -30,4 +45,3 @@
 M1013 a_307_47# a_204_315# a_80_60# VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=1.197e+11p ps=1.41e+06u
 .ends
-
diff --git a/cells/ha/sky130_fd_sc_lp__ha_1.spice b/cells/ha/sky130_fd_sc_lp__ha_1.spice
index 7b497e4..8c094a3 100644
--- a/cells/ha/sky130_fd_sc_lp__ha_1.spice
+++ b/cells/ha/sky130_fd_sc_lp__ha_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__ha_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__ha_1 A B VGND VNB VPB VPWR COUT SUM
 M1000 VPWR A a_223_320# VPB phighvt w=420000u l=150000u
@@ -30,4 +45,3 @@
 M1013 COUT a_223_320# VGND VNB nshort w=840000u l=150000u
 +  ad=2.226e+11p pd=2.21e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/ha/sky130_fd_sc_lp__ha_2.spice b/cells/ha/sky130_fd_sc_lp__ha_2.spice
index fff14fc..0165d79 100644
--- a/cells/ha/sky130_fd_sc_lp__ha_2.spice
+++ b/cells/ha/sky130_fd_sc_lp__ha_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__ha_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__ha_2 A B VGND VNB VPB VPWR COUT SUM
 M1000 VGND a_227_397# SUM VNB nshort w=840000u l=150000u
@@ -38,4 +53,3 @@
 M1017 VPWR a_227_397# SUM VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/ha/sky130_fd_sc_lp__ha_4.spice b/cells/ha/sky130_fd_sc_lp__ha_4.spice
index c0ac7dc..7f97f3a 100644
--- a/cells/ha/sky130_fd_sc_lp__ha_4.spice
+++ b/cells/ha/sky130_fd_sc_lp__ha_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__ha_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__ha_4 A B VGND VNB VPB VPWR COUT SUM
 M1000 VPWR A a_454_263# VPB phighvt w=1.26e+06u l=150000u
@@ -74,4 +89,3 @@
 M1035 SUM a_110_263# VPWR VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/ha/sky130_fd_sc_lp__ha_lp.spice b/cells/ha/sky130_fd_sc_lp__ha_lp.spice
index 876834c..84f692a 100644
--- a/cells/ha/sky130_fd_sc_lp__ha_lp.spice
+++ b/cells/ha/sky130_fd_sc_lp__ha_lp.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__ha_lp.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__ha_lp A B VGND VNB VPB VPWR COUT SUM
 M1000 a_296_286# B VPWR VPB phighvt w=1e+06u l=250000u
@@ -34,4 +49,3 @@
 M1015 a_369_47# A VGND VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/ha/sky130_fd_sc_lp__ha_m.spice b/cells/ha/sky130_fd_sc_lp__ha_m.spice
index fed6157..045cab5 100644
--- a/cells/ha/sky130_fd_sc_lp__ha_m.spice
+++ b/cells/ha/sky130_fd_sc_lp__ha_m.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__ha_m.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__ha_m A B VGND VNB VPB VPWR COUT SUM
 M1000 VGND A a_720_125# VNB nshort w=420000u l=150000u
@@ -30,4 +45,3 @@
 M1013 a_249_212# B VPWR VPB phighvt w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/inputiso0n/sky130_fd_sc_lp__inputiso0n_lp.spice b/cells/inputiso0n/sky130_fd_sc_lp__inputiso0n_lp.spice
index 29e8969..1ed3d1e 100644
--- a/cells/inputiso0n/sky130_fd_sc_lp__inputiso0n_lp.spice
+++ b/cells/inputiso0n/sky130_fd_sc_lp__inputiso0n_lp.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__inputiso0n_lp.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__inputiso0n_lp A SLEEP_B VGND VNB VPB VPWR X
 M1000 a_307_489# SLEEP_B a_138_93# VPB phighvt w=420000u l=150000u
@@ -22,4 +37,3 @@
 M1009 a_149_489# A VPWR VPB phighvt w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/inputiso0p/sky130_fd_sc_lp__inputiso0p_lp.spice b/cells/inputiso0p/sky130_fd_sc_lp__inputiso0p_lp.spice
index a9235fa..0eb790c 100644
--- a/cells/inputiso0p/sky130_fd_sc_lp__inputiso0p_lp.spice
+++ b/cells/inputiso0p/sky130_fd_sc_lp__inputiso0p_lp.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__inputiso0p_lp.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__inputiso0p_lp A SLEEP VGND VNB VPB VPWR X
 M1000 a_432_489# A a_342_489# VPB phighvt w=420000u l=150000u
@@ -30,4 +45,3 @@
 M1013 a_342_489# a_27_93# a_270_489# VPB phighvt w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/inputiso1n/sky130_fd_sc_lp__inputiso1n_lp.spice b/cells/inputiso1n/sky130_fd_sc_lp__inputiso1n_lp.spice
index 90ef990..9a6ef20 100644
--- a/cells/inputiso1n/sky130_fd_sc_lp__inputiso1n_lp.spice
+++ b/cells/inputiso1n/sky130_fd_sc_lp__inputiso1n_lp.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__inputiso1n_lp.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__inputiso1n_lp A SLEEP_B VGND VNB VPB VPWR X
 M1000 a_340_489# a_27_93# VPWR VPB phighvt w=420000u l=150000u
@@ -30,4 +45,3 @@
 M1013 a_340_93# A a_340_489# VPB phighvt w=420000u l=150000u
 +  ad=1.113e+11p pd=1.37e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/inputiso1p/sky130_fd_sc_lp__inputiso1p_lp.spice b/cells/inputiso1p/sky130_fd_sc_lp__inputiso1p_lp.spice
index 2fdaa5e..8588159 100644
--- a/cells/inputiso1p/sky130_fd_sc_lp__inputiso1p_lp.spice
+++ b/cells/inputiso1p/sky130_fd_sc_lp__inputiso1p_lp.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__inputiso1p_lp.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__inputiso1p_lp A SLEEP VGND VNB VPB VPWR X
 M1000 VPWR SLEEP a_245_489# VPB phighvt w=420000u l=150000u
@@ -22,4 +37,3 @@
 M1009 VGND SLEEP a_335_93# VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/inputisolatch/sky130_fd_sc_lp__inputisolatch_lp.spice b/cells/inputisolatch/sky130_fd_sc_lp__inputisolatch_lp.spice
index 965af00..9e0857d 100644
--- a/cells/inputisolatch/sky130_fd_sc_lp__inputisolatch_lp.spice
+++ b/cells/inputisolatch/sky130_fd_sc_lp__inputisolatch_lp.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__inputisolatch_lp.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__inputisolatch_lp D SLEEP_B VGND VNB VPB VPWR Q
 M1000 VGND a_458_293# a_521_73# VNB nshort w=420000u l=150000u
@@ -42,4 +57,3 @@
 M1019 a_281_535# a_21_179# a_117_535# VPB phighvt w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/inv/sky130_fd_sc_lp__inv_0.spice b/cells/inv/sky130_fd_sc_lp__inv_0.spice
index 1dc5c72..53b205c 100644
--- a/cells/inv/sky130_fd_sc_lp__inv_0.spice
+++ b/cells/inv/sky130_fd_sc_lp__inv_0.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__inv_0.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__inv_0 A VGND VNB VPB VPWR Y
 M1000 Y A VGND VNB nshort w=420000u l=150000u
@@ -6,4 +21,3 @@
 M1001 Y A VPWR VPB phighvt w=640000u l=150000u
 +  ad=1.696e+11p pd=1.81e+06u as=1.696e+11p ps=1.81e+06u
 .ends
-
diff --git a/cells/inv/sky130_fd_sc_lp__inv_1.spice b/cells/inv/sky130_fd_sc_lp__inv_1.spice
index 6ccc3f3..edbb4cf 100644
--- a/cells/inv/sky130_fd_sc_lp__inv_1.spice
+++ b/cells/inv/sky130_fd_sc_lp__inv_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__inv_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__inv_1 A VGND VNB VPB VPWR Y
 M1000 Y A VGND VNB nshort w=840000u l=150000u
@@ -6,4 +21,3 @@
 M1001 Y A VPWR VPB phighvt w=1.26e+06u l=150000u
 +  ad=3.339e+11p pd=3.05e+06u as=3.339e+11p ps=3.05e+06u
 .ends
-
diff --git a/cells/inv/sky130_fd_sc_lp__inv_16.spice b/cells/inv/sky130_fd_sc_lp__inv_16.spice
index 0d82cf7..705a47d 100644
--- a/cells/inv/sky130_fd_sc_lp__inv_16.spice
+++ b/cells/inv/sky130_fd_sc_lp__inv_16.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__inv_16.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__inv_16 A VGND VNB VPB Y
 M1000 Y A VPB w_n38_331# phighvt w=1.26e+06u l=150000u
@@ -66,4 +81,3 @@
 M1031 VPB A Y w_n38_331# phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/inv/sky130_fd_sc_lp__inv_2.spice b/cells/inv/sky130_fd_sc_lp__inv_2.spice
index a5e15b4..689fde0 100644
--- a/cells/inv/sky130_fd_sc_lp__inv_2.spice
+++ b/cells/inv/sky130_fd_sc_lp__inv_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__inv_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__inv_2 A VGND VNB VPB VPWR Y
 M1000 Y A VGND VNB nshort w=840000u l=150000u
@@ -10,4 +25,3 @@
 M1003 Y A VPWR VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/inv/sky130_fd_sc_lp__inv_4.spice b/cells/inv/sky130_fd_sc_lp__inv_4.spice
index 6d54dc2..488333c 100644
--- a/cells/inv/sky130_fd_sc_lp__inv_4.spice
+++ b/cells/inv/sky130_fd_sc_lp__inv_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__inv_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__inv_4 A VGND VNB VPB VPWR Y
 M1000 Y A VGND VNB nshort w=840000u l=150000u
@@ -18,4 +33,3 @@
 M1007 Y A VPWR VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/inv/sky130_fd_sc_lp__inv_8.spice b/cells/inv/sky130_fd_sc_lp__inv_8.spice
index b70f70d..6953500 100644
--- a/cells/inv/sky130_fd_sc_lp__inv_8.spice
+++ b/cells/inv/sky130_fd_sc_lp__inv_8.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__inv_8.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__inv_8 A VGND VNB VPB VPWR Y
 M1000 VPWR A Y VPB phighvt w=1.26e+06u l=150000u
@@ -34,4 +49,3 @@
 M1015 Y A VPWR VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/inv/sky130_fd_sc_lp__inv_lp.spice b/cells/inv/sky130_fd_sc_lp__inv_lp.spice
index d3f1855..f70d5ce 100644
--- a/cells/inv/sky130_fd_sc_lp__inv_lp.spice
+++ b/cells/inv/sky130_fd_sc_lp__inv_lp.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__inv_lp.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__inv_lp A VGND VNB VPB VPWR Y
 M1000 a_124_67# A VGND VNB nshort w=420000u l=150000u
@@ -8,4 +23,3 @@
 M1002 Y A a_124_67# VNB nshort w=420000u l=150000u
 +  ad=1.197e+11p pd=1.41e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/inv/sky130_fd_sc_lp__inv_m.spice b/cells/inv/sky130_fd_sc_lp__inv_m.spice
index 76e9c6b..b1f6197 100644
--- a/cells/inv/sky130_fd_sc_lp__inv_m.spice
+++ b/cells/inv/sky130_fd_sc_lp__inv_m.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__inv_m.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__inv_m A VGND VNB VPB VPWR Y
 M1000 Y A VGND VNB nshort w=420000u l=150000u
@@ -6,4 +21,3 @@
 M1001 Y A VPWR VPB phighvt w=420000u l=150000u
 +  ad=1.113e+11p pd=1.37e+06u as=1.113e+11p ps=1.37e+06u
 .ends
-
diff --git a/cells/invkapwr/sky130_fd_sc_lp__invkapwr_1.spice b/cells/invkapwr/sky130_fd_sc_lp__invkapwr_1.spice
index c47b8dc..cd79497 100644
--- a/cells/invkapwr/sky130_fd_sc_lp__invkapwr_1.spice
+++ b/cells/invkapwr/sky130_fd_sc_lp__invkapwr_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__invkapwr_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__invkapwr_1 A KAPWR VGND VNB VPB VPWR Y
 M1000 KAPWR A Y VPB phighvt w=840000u l=150000u
@@ -8,4 +23,3 @@
 M1002 Y A KAPWR VPB phighvt w=840000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/invkapwr/sky130_fd_sc_lp__invkapwr_2.spice b/cells/invkapwr/sky130_fd_sc_lp__invkapwr_2.spice
index 0e21157..459fd6f 100644
--- a/cells/invkapwr/sky130_fd_sc_lp__invkapwr_2.spice
+++ b/cells/invkapwr/sky130_fd_sc_lp__invkapwr_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__invkapwr_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__invkapwr_2 A KAPWR VGND VNB VPB VPWR Y
 M1000 Y A VGND VNB nshort w=420000u l=150000u
@@ -12,4 +27,3 @@
 M1004 Y A KAPWR VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/invkapwr/sky130_fd_sc_lp__invkapwr_4.spice b/cells/invkapwr/sky130_fd_sc_lp__invkapwr_4.spice
index d6be2bd..d884e39 100644
--- a/cells/invkapwr/sky130_fd_sc_lp__invkapwr_4.spice
+++ b/cells/invkapwr/sky130_fd_sc_lp__invkapwr_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__invkapwr_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__invkapwr_4 A KAPWR VGND VNB VPB VPWR Y
 M1000 Y A VGND VNB nshort w=420000u l=150000u
@@ -22,4 +37,3 @@
 M1009 Y A KAPWR VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/invkapwr/sky130_fd_sc_lp__invkapwr_8.spice b/cells/invkapwr/sky130_fd_sc_lp__invkapwr_8.spice
index b2e2be1..7a46dcb 100644
--- a/cells/invkapwr/sky130_fd_sc_lp__invkapwr_8.spice
+++ b/cells/invkapwr/sky130_fd_sc_lp__invkapwr_8.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__invkapwr_8.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__invkapwr_8 A KAPWR VGND VNB VPB VPWR Y
 M1000 Y A KAPWR VPB phighvt w=1.26e+06u l=150000u
@@ -42,4 +57,3 @@
 M1019 Y A KAPWR VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/invlp/sky130_fd_sc_lp__invlp_0.spice b/cells/invlp/sky130_fd_sc_lp__invlp_0.spice
index 320ef92..d92aa7a 100644
--- a/cells/invlp/sky130_fd_sc_lp__invlp_0.spice
+++ b/cells/invlp/sky130_fd_sc_lp__invlp_0.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__invlp_0.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__invlp_0 A VGND VNB VPB VPWR Y
 M1000 a_124_92# A VGND VNB nshort w=420000u l=150000u
@@ -10,4 +25,3 @@
 M1003 Y A a_124_468# VPB phighvt w=640000u l=150000u
 +  ad=1.824e+11p pd=1.85e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/invlp/sky130_fd_sc_lp__invlp_1.spice b/cells/invlp/sky130_fd_sc_lp__invlp_1.spice
index c2c36a2..56caf0a 100644
--- a/cells/invlp/sky130_fd_sc_lp__invlp_1.spice
+++ b/cells/invlp/sky130_fd_sc_lp__invlp_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__invlp_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__invlp_1 A VGND VNB VPB VPWR Y
 M1000 a_130_367# A VPWR VPB phighvt w=1.26e+06u l=150000u
@@ -10,4 +25,3 @@
 M1003 a_124_47# A VGND VNB nshort w=840000u l=150000u
 +  ad=0p pd=0u as=2.394e+11p ps=2.25e+06u
 .ends
-
diff --git a/cells/invlp/sky130_fd_sc_lp__invlp_2.spice b/cells/invlp/sky130_fd_sc_lp__invlp_2.spice
index 993a276..ae15337 100644
--- a/cells/invlp/sky130_fd_sc_lp__invlp_2.spice
+++ b/cells/invlp/sky130_fd_sc_lp__invlp_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__invlp_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__invlp_2 A VGND VNB VPB VPWR Y
 M1000 VPWR A a_116_367# VPB phighvt w=1.26e+06u l=150000u
@@ -18,4 +33,3 @@
 M1007 Y A a_116_55# VNB nshort w=840000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/invlp/sky130_fd_sc_lp__invlp_4.spice b/cells/invlp/sky130_fd_sc_lp__invlp_4.spice
index 55302b5..2655958 100644
--- a/cells/invlp/sky130_fd_sc_lp__invlp_4.spice
+++ b/cells/invlp/sky130_fd_sc_lp__invlp_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__invlp_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__invlp_4 A VGND VNB VPB VPWR Y
 M1000 VGND A a_114_53# VNB nshort w=840000u l=150000u
@@ -34,4 +49,3 @@
 M1015 a_114_53# A VGND VNB nshort w=840000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/invlp/sky130_fd_sc_lp__invlp_8.spice b/cells/invlp/sky130_fd_sc_lp__invlp_8.spice
index fe92d0e..fb2cf74 100644
--- a/cells/invlp/sky130_fd_sc_lp__invlp_8.spice
+++ b/cells/invlp/sky130_fd_sc_lp__invlp_8.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__invlp_8.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__invlp_8 A VGND VNB VPB VPWR Y
 M1000 Y A a_114_53# VNB nshort w=840000u l=150000u
@@ -66,4 +81,3 @@
 M1031 Y A a_114_367# VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/invlp/sky130_fd_sc_lp__invlp_m.spice b/cells/invlp/sky130_fd_sc_lp__invlp_m.spice
index acd4f9e..410c98c 100644
--- a/cells/invlp/sky130_fd_sc_lp__invlp_m.spice
+++ b/cells/invlp/sky130_fd_sc_lp__invlp_m.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__invlp_m.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__invlp_m A VGND VNB VPB VPWR Y
 M1000 a_124_92# A VGND VNB nshort w=420000u l=150000u
@@ -10,4 +25,3 @@
 M1003 Y A a_124_92# VNB nshort w=420000u l=150000u
 +  ad=1.197e+11p pd=1.41e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/iso0n/sky130_fd_sc_lp__iso0n_lp.spice b/cells/iso0n/sky130_fd_sc_lp__iso0n_lp.spice
index 1f0601e..9ddcdab 100644
--- a/cells/iso0n/sky130_fd_sc_lp__iso0n_lp.spice
+++ b/cells/iso0n/sky130_fd_sc_lp__iso0n_lp.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__iso0n_lp.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__iso0n_lp A KAGND SLEEP_B VGND VNB VPB VPWR X
 M1000 a_307_489# SLEEP_B a_138_93# VPB phighvt w=420000u l=150000u
@@ -22,4 +37,3 @@
 M1009 a_149_489# A VPWR VPB phighvt w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/iso0n/sky130_fd_sc_lp__iso0n_lp2.spice b/cells/iso0n/sky130_fd_sc_lp__iso0n_lp2.spice
index 007a893..5d2fa7d 100644
--- a/cells/iso0n/sky130_fd_sc_lp__iso0n_lp2.spice
+++ b/cells/iso0n/sky130_fd_sc_lp__iso0n_lp2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__iso0n_lp2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__iso0n_lp2 A SLEEP_B KAGND VGND VNB VPB VPWR X
 M1000 VPWR SLEEP_B a_65_65# VPB phighvt w=1e+06u l=250000u
@@ -16,4 +31,3 @@
 M1006 X a_65_65# VPWR VPB phighvt w=1e+06u l=250000u
 +  ad=2.85e+11p pd=2.57e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/iso0p/sky130_fd_sc_lp__iso0p_lp.spice b/cells/iso0p/sky130_fd_sc_lp__iso0p_lp.spice
index 09d3c3b..02388f7 100644
--- a/cells/iso0p/sky130_fd_sc_lp__iso0p_lp.spice
+++ b/cells/iso0p/sky130_fd_sc_lp__iso0p_lp.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__iso0p_lp.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__iso0p_lp A KAPWR SLEEP VGND VNB VPB VPWR X
 M1000 a_432_489# A a_342_489# VPB phighvt w=420000u l=150000u
@@ -30,4 +45,3 @@
 M1013 a_342_489# a_27_93# a_270_489# VPB phighvt w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/iso0p/sky130_fd_sc_lp__iso0p_lp2.spice b/cells/iso0p/sky130_fd_sc_lp__iso0p_lp2.spice
index 1383d66..dcf8267 100644
--- a/cells/iso0p/sky130_fd_sc_lp__iso0p_lp2.spice
+++ b/cells/iso0p/sky130_fd_sc_lp__iso0p_lp2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__iso0p_lp2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__iso0p_lp2 A SLEEP KAPWR VGND VNB VPB VPWR X
 M1000 a_342_417# A a_340_93# VNB nshort w=420000u l=150000u
@@ -22,4 +37,3 @@
 M1009 a_342_417# a_27_93# KAPWR VPB phighvt w=1e+06u l=250000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/iso1n/sky130_fd_sc_lp__iso1n_lp.spice b/cells/iso1n/sky130_fd_sc_lp__iso1n_lp.spice
index f4975df..53a6cde 100644
--- a/cells/iso1n/sky130_fd_sc_lp__iso1n_lp.spice
+++ b/cells/iso1n/sky130_fd_sc_lp__iso1n_lp.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__iso1n_lp.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__iso1n_lp A KAGND SLEEP_B VGND VNB VPB VPWR X
 M1000 a_340_489# a_27_93# VPWR VPB phighvt w=420000u l=150000u
@@ -30,4 +45,3 @@
 M1013 a_340_93# A a_340_489# VPB phighvt w=420000u l=150000u
 +  ad=1.113e+11p pd=1.37e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/iso1n/sky130_fd_sc_lp__iso1n_lp2.spice b/cells/iso1n/sky130_fd_sc_lp__iso1n_lp2.spice
index 6099074..4251bc1 100644
--- a/cells/iso1n/sky130_fd_sc_lp__iso1n_lp2.spice
+++ b/cells/iso1n/sky130_fd_sc_lp__iso1n_lp2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__iso1n_lp2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__iso1n_lp2 A SLEEP_B KAGND VGND VNB VPB VPWR X
 M1000 VPWR SLEEP_B a_27_109# VPB phighvt w=1e+06u l=250000u
@@ -26,4 +41,3 @@
 M1011 a_452_109# A a_350_109# VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/iso1p/sky130_fd_sc_lp__iso1p_lp.spice b/cells/iso1p/sky130_fd_sc_lp__iso1p_lp.spice
index 4e97fb0..91b077d 100644
--- a/cells/iso1p/sky130_fd_sc_lp__iso1p_lp.spice
+++ b/cells/iso1p/sky130_fd_sc_lp__iso1p_lp.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__iso1p_lp.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__iso1p_lp A KAPWR SLEEP VGND VNB VPB VPWR X
 M1000 KAPWR SLEEP a_245_489# VPB phighvt w=420000u l=150000u
@@ -22,4 +37,3 @@
 M1009 VGND SLEEP a_335_93# VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/iso1p/sky130_fd_sc_lp__iso1p_lp2.spice b/cells/iso1p/sky130_fd_sc_lp__iso1p_lp2.spice
index 5d5fa41..e8bfcc3 100644
--- a/cells/iso1p/sky130_fd_sc_lp__iso1p_lp2.spice
+++ b/cells/iso1p/sky130_fd_sc_lp__iso1p_lp2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__iso1p_lp2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__iso1p_lp2 A SLEEP KAPWR VGND VNB VPB VPWR X
 M1000 a_137_409# A a_147_57# VNB nshort w=420000u l=150000u
@@ -20,4 +35,3 @@
 M1008 VGND SLEEP a_311_57# VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/isobufsrc/sky130_fd_sc_lp__isobufsrc_1.spice b/cells/isobufsrc/sky130_fd_sc_lp__isobufsrc_1.spice
index 249809c..30fc4da 100644
--- a/cells/isobufsrc/sky130_fd_sc_lp__isobufsrc_1.spice
+++ b/cells/isobufsrc/sky130_fd_sc_lp__isobufsrc_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__isobufsrc_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__isobufsrc_1 A SLEEP VGND VNB VPB VPWR X
 M1000 X a_79_47# a_283_367# VPB phighvt w=1.26e+06u l=150000u
@@ -14,4 +29,3 @@
 M1005 a_283_367# SLEEP VPWR VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/isobufsrc/sky130_fd_sc_lp__isobufsrc_2.spice b/cells/isobufsrc/sky130_fd_sc_lp__isobufsrc_2.spice
index fd5224e..a5e3ff0 100644
--- a/cells/isobufsrc/sky130_fd_sc_lp__isobufsrc_2.spice
+++ b/cells/isobufsrc/sky130_fd_sc_lp__isobufsrc_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__isobufsrc_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__isobufsrc_2 A SLEEP VGND VNB VPB VPWR X
 M1000 VGND SLEEP X VNB nshort w=840000u l=150000u
@@ -22,4 +37,3 @@
 M1009 a_283_367# SLEEP VPWR VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/isobufsrc/sky130_fd_sc_lp__isobufsrc_4.spice b/cells/isobufsrc/sky130_fd_sc_lp__isobufsrc_4.spice
index 6eb94f5..81a414c 100644
--- a/cells/isobufsrc/sky130_fd_sc_lp__isobufsrc_4.spice
+++ b/cells/isobufsrc/sky130_fd_sc_lp__isobufsrc_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__isobufsrc_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__isobufsrc_4 A SLEEP VGND VNB VPB VPWR X
 M1000 a_245_367# SLEEP VPWR VPB phighvt w=1.26e+06u l=150000u
@@ -38,4 +53,3 @@
 M1017 VGND a_60_47# X VNB nshort w=840000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/isolatch/sky130_fd_sc_lp__isolatch_lp.spice b/cells/isolatch/sky130_fd_sc_lp__isolatch_lp.spice
index e5fb0b9..482d00e 100644
--- a/cells/isolatch/sky130_fd_sc_lp__isolatch_lp.spice
+++ b/cells/isolatch/sky130_fd_sc_lp__isolatch_lp.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__isolatch_lp.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__isolatch_lp D SLEEP_B KAPWR VGND VNB VPB VPWR Q
 M1000 VGND a_458_293# a_521_73# VNB nshort w=420000u l=150000u
@@ -42,4 +57,3 @@
 M1019 a_281_535# a_21_179# a_117_535# VPB phighvt w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/lsbuf/sky130_fd_sc_lp__lsbuf_lp.spice b/cells/lsbuf/sky130_fd_sc_lp__lsbuf_lp.spice
index e540e59..25f031f 100644
--- a/cells/lsbuf/sky130_fd_sc_lp__lsbuf_lp.spice
+++ b/cells/lsbuf/sky130_fd_sc_lp__lsbuf_lp.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__lsbuf_lp.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__lsbuf_lp A DESTPWR DESTVPB VGND VPB VPWR X
 M1000 a_712_718# a_193_718# VGND VGND nshort w=840000u l=150000u
@@ -34,4 +49,3 @@
 M1015 DESTPWR a_246_987# a_276_1085# DESTVPB phighvt w=1e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/lsbufiso0p/sky130_fd_sc_lp__lsbufiso0p_lp.spice b/cells/lsbufiso0p/sky130_fd_sc_lp__lsbufiso0p_lp.spice
index acfe3e5..e27edee 100644
--- a/cells/lsbufiso0p/sky130_fd_sc_lp__lsbufiso0p_lp.spice
+++ b/cells/lsbufiso0p/sky130_fd_sc_lp__lsbufiso0p_lp.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__lsbufiso0p_lp.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__lsbufiso0p_lp A DESTPWR DESTVPB SLEEP VGND VPB VPWR X
 M1000 a_1096_1085# SLEEP DESTPWR DESTVPB phighvt w=1e+06u l=150000u
@@ -50,4 +65,3 @@
 M1023 X a_123_718# a_1096_1085# DESTVPB phighvt w=1e+06u l=150000u
 +  ad=2.65e+11p pd=2.53e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/lsbufiso1p/sky130_fd_sc_lp__lsbufiso1p_lp.spice b/cells/lsbufiso1p/sky130_fd_sc_lp__lsbufiso1p_lp.spice
index ef28934..baceed0 100644
--- a/cells/lsbufiso1p/sky130_fd_sc_lp__lsbufiso1p_lp.spice
+++ b/cells/lsbufiso1p/sky130_fd_sc_lp__lsbufiso1p_lp.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__lsbufiso1p_lp.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__lsbufiso1p_lp A DESTPWR DESTVPB SLEEP VGND VPB VPWR X
 M1000 a_278_718# A a_206_718# VGND nshort w=840000u l=150000u
@@ -50,4 +65,3 @@
 M1023 VGND a_517_420# a_278_718# VGND nshort w=840000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/maj3/sky130_fd_sc_lp__maj3_0.spice b/cells/maj3/sky130_fd_sc_lp__maj3_0.spice
index b785413..38feab9 100644
--- a/cells/maj3/sky130_fd_sc_lp__maj3_0.spice
+++ b/cells/maj3/sky130_fd_sc_lp__maj3_0.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__maj3_0.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__maj3_0 A B C VGND VNB VPB VPWR X
 M1000 a_149_57# C a_28_431# VNB nshort w=420000u l=150000u
@@ -30,4 +45,3 @@
 M1013 a_115_431# C a_28_431# VPB phighvt w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/maj3/sky130_fd_sc_lp__maj3_1.spice b/cells/maj3/sky130_fd_sc_lp__maj3_1.spice
index 6c0e0cd..73f7379 100644
--- a/cells/maj3/sky130_fd_sc_lp__maj3_1.spice
+++ b/cells/maj3/sky130_fd_sc_lp__maj3_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__maj3_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__maj3_1 A B C VGND VNB VPB VPWR X
 M1000 a_30_57# B a_275_391# VPB phighvt w=420000u l=150000u
@@ -30,4 +45,3 @@
 M1013 a_275_391# A VPWR VPB phighvt w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/maj3/sky130_fd_sc_lp__maj3_2.spice b/cells/maj3/sky130_fd_sc_lp__maj3_2.spice
index af8787e..de353b2 100644
--- a/cells/maj3/sky130_fd_sc_lp__maj3_2.spice
+++ b/cells/maj3/sky130_fd_sc_lp__maj3_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__maj3_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__maj3_2 A B C VGND VNB VPB VPWR X
 M1000 a_310_491# A VPWR VPB phighvt w=640000u l=150000u
@@ -34,4 +49,3 @@
 M1015 VGND C a_482_49# VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/maj3/sky130_fd_sc_lp__maj3_4.spice b/cells/maj3/sky130_fd_sc_lp__maj3_4.spice
index 2216dcd..f3ff9c2 100644
--- a/cells/maj3/sky130_fd_sc_lp__maj3_4.spice
+++ b/cells/maj3/sky130_fd_sc_lp__maj3_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__maj3_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__maj3_4 A B C VGND VNB VPB VPWR X
 M1000 VPWR A a_154_367# VPB phighvt w=1.26e+06u l=150000u
@@ -42,4 +57,3 @@
 M1019 VPWR C a_482_367# VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/maj3/sky130_fd_sc_lp__maj3_lp.spice b/cells/maj3/sky130_fd_sc_lp__maj3_lp.spice
index f5dfa93..0689412 100644
--- a/cells/maj3/sky130_fd_sc_lp__maj3_lp.spice
+++ b/cells/maj3/sky130_fd_sc_lp__maj3_lp.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__maj3_lp.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__maj3_lp A B C VGND VNB VPB VPWR X
 M1000 a_154_125# B a_29_419# VNB nshort w=420000u l=150000u
@@ -32,4 +47,3 @@
 M1014 a_350_125# A VGND VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/maj3/sky130_fd_sc_lp__maj3_m.spice b/cells/maj3/sky130_fd_sc_lp__maj3_m.spice
index 91aab90..856d573 100644
--- a/cells/maj3/sky130_fd_sc_lp__maj3_m.spice
+++ b/cells/maj3/sky130_fd_sc_lp__maj3_m.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__maj3_m.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__maj3_m A B C VGND VNB VPB VPWR X
 M1000 a_121_57# C a_34_57# VNB nshort w=420000u l=150000u
@@ -30,4 +45,3 @@
 M1013 VGND A a_121_57# VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/mux2/sky130_fd_sc_lp__mux2_0.spice b/cells/mux2/sky130_fd_sc_lp__mux2_0.spice
index fc41ad3..bb6ac9d 100644
--- a/cells/mux2/sky130_fd_sc_lp__mux2_0.spice
+++ b/cells/mux2/sky130_fd_sc_lp__mux2_0.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__mux2_0.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__mux2_0 A0 A1 S VGND VNB VPB VPWR X
 M1000 a_509_99# S VPWR VPB phighvt w=420000u l=150000u
@@ -26,4 +41,3 @@
 M1011 VPWR a_509_99# a_423_515# VPB phighvt w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/mux2/sky130_fd_sc_lp__mux2_1.spice b/cells/mux2/sky130_fd_sc_lp__mux2_1.spice
index ef7babb..7aa46c0 100644
--- a/cells/mux2/sky130_fd_sc_lp__mux2_1.spice
+++ b/cells/mux2/sky130_fd_sc_lp__mux2_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__mux2_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__mux2_1 A0 A1 S VGND VNB VPB VPWR X
 M1000 VPWR a_488_106# a_518_434# VPB phighvt w=420000u l=150000u
@@ -26,4 +41,3 @@
 M1011 a_488_106# S VPWR VPB phighvt w=420000u l=150000u
 +  ad=1.113e+11p pd=1.37e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/mux2/sky130_fd_sc_lp__mux2_2.spice b/cells/mux2/sky130_fd_sc_lp__mux2_2.spice
index 49e3b72..61bdc5f 100644
--- a/cells/mux2/sky130_fd_sc_lp__mux2_2.spice
+++ b/cells/mux2/sky130_fd_sc_lp__mux2_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__mux2_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__mux2_2 A0 A1 S VGND VNB VPB VPWR X
 M1000 a_350_449# a_284_279# VPWR VPB phighvt w=640000u l=150000u
@@ -30,4 +45,3 @@
 M1013 a_86_21# A0 a_319_48# VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/mux2/sky130_fd_sc_lp__mux2_4.spice b/cells/mux2/sky130_fd_sc_lp__mux2_4.spice
index ce136bb..9dc5bb4 100644
--- a/cells/mux2/sky130_fd_sc_lp__mux2_4.spice
+++ b/cells/mux2/sky130_fd_sc_lp__mux2_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__mux2_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__mux2_4 A0 A1 S VGND VNB VPB VPWR X
 M1000 VGND a_359_47# X VNB nshort w=840000u l=150000u
@@ -38,4 +53,3 @@
 M1017 a_210_367# a_41_367# VPWR VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/mux2/sky130_fd_sc_lp__mux2_8.spice b/cells/mux2/sky130_fd_sc_lp__mux2_8.spice
index 194dc1a..4e07c09 100644
--- a/cells/mux2/sky130_fd_sc_lp__mux2_8.spice
+++ b/cells/mux2/sky130_fd_sc_lp__mux2_8.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__mux2_8.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__mux2_8 A0 A1 S VGND VNB VPB VPWR X
 M1000 a_1179_311# S VPWR VPB phighvt w=1.26e+06u l=150000u
@@ -70,4 +85,3 @@
 M1033 X a_84_21# VGND VNB nshort w=840000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/mux2/sky130_fd_sc_lp__mux2_lp.spice b/cells/mux2/sky130_fd_sc_lp__mux2_lp.spice
index 7923366..21e76bd 100644
--- a/cells/mux2/sky130_fd_sc_lp__mux2_lp.spice
+++ b/cells/mux2/sky130_fd_sc_lp__mux2_lp.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__mux2_lp.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__mux2_lp A0 A1 S VGND VNB VPB VPWR X
 M1000 a_123_527# a_84_29# X VPB phighvt w=420000u l=150000u
@@ -34,4 +49,3 @@
 M1015 VPWR a_84_29# a_123_527# VPB phighvt w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/mux2/sky130_fd_sc_lp__mux2_lp2.spice b/cells/mux2/sky130_fd_sc_lp__mux2_lp2.spice
index 38082ed..f55494e 100644
--- a/cells/mux2/sky130_fd_sc_lp__mux2_lp2.spice
+++ b/cells/mux2/sky130_fd_sc_lp__mux2_lp2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__mux2_lp2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__mux2_lp2 A0 A1 S VGND VNB VPB VPWR X
 M1000 a_518_401# A0 a_84_259# VPB phighvt w=1e+06u l=250000u
@@ -30,4 +45,3 @@
 M1013 a_182_303# S VPWR VPB phighvt w=1e+06u l=250000u
 +  ad=2.85e+11p pd=2.57e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/mux2/sky130_fd_sc_lp__mux2_m.spice b/cells/mux2/sky130_fd_sc_lp__mux2_m.spice
index 6f61f5b..542922c 100644
--- a/cells/mux2/sky130_fd_sc_lp__mux2_m.spice
+++ b/cells/mux2/sky130_fd_sc_lp__mux2_m.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__mux2_m.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__mux2_m A0 A1 S VGND VNB VPB VPWR X
 M1000 VPWR a_123_269# X VPB phighvt w=420000u l=150000u
@@ -26,4 +41,3 @@
 M1011 a_487_501# A1 a_123_269# VPB phighvt w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/mux2i/sky130_fd_sc_lp__mux2i_0.spice b/cells/mux2i/sky130_fd_sc_lp__mux2i_0.spice
index cc66c07..018e94a 100644
--- a/cells/mux2i/sky130_fd_sc_lp__mux2i_0.spice
+++ b/cells/mux2i/sky130_fd_sc_lp__mux2i_0.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__mux2i_0.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__mux2i_0 A0 A1 S VGND VNB VPB VPWR Y
 M1000 a_465_491# A0 Y VPB phighvt w=640000u l=150000u
@@ -22,4 +37,3 @@
 M1009 Y A1 a_292_491# VPB phighvt w=640000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/mux2i/sky130_fd_sc_lp__mux2i_1.spice b/cells/mux2i/sky130_fd_sc_lp__mux2i_1.spice
index fd49e69..cdac84e 100644
--- a/cells/mux2i/sky130_fd_sc_lp__mux2i_1.spice
+++ b/cells/mux2i/sky130_fd_sc_lp__mux2i_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__mux2i_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__mux2i_1 A0 A1 S VGND VNB VPB VPWR Y
 M1000 a_212_73# A1 Y VNB nshort w=840000u l=150000u
@@ -22,4 +37,3 @@
 M1009 a_52_367# S VPWR VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/mux2i/sky130_fd_sc_lp__mux2i_2.spice b/cells/mux2i/sky130_fd_sc_lp__mux2i_2.spice
index 279b560..0ebaa04 100644
--- a/cells/mux2i/sky130_fd_sc_lp__mux2i_2.spice
+++ b/cells/mux2i/sky130_fd_sc_lp__mux2i_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__mux2i_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__mux2i_2 A0 A1 S VGND VNB VPB VPWR Y
 M1000 Y A1 a_251_367# VPB phighvt w=1.26e+06u l=150000u
@@ -38,4 +53,3 @@
 M1017 a_251_47# a_44_367# VGND VNB nshort w=840000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/mux2i/sky130_fd_sc_lp__mux2i_4.spice b/cells/mux2i/sky130_fd_sc_lp__mux2i_4.spice
index f92e560..c1ce2f7 100644
--- a/cells/mux2i/sky130_fd_sc_lp__mux2i_4.spice
+++ b/cells/mux2i/sky130_fd_sc_lp__mux2i_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__mux2i_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__mux2i_4 A0 A1 S VGND VNB VPB VPWR Y
 M1000 VPWR S a_126_367# VPB phighvt w=1.26e+06u l=150000u
@@ -70,4 +85,3 @@
 M1033 a_470_69# S VGND VNB nshort w=840000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/mux2i/sky130_fd_sc_lp__mux2i_lp.spice b/cells/mux2i/sky130_fd_sc_lp__mux2i_lp.spice
index 9982818..0db8107 100644
--- a/cells/mux2i/sky130_fd_sc_lp__mux2i_lp.spice
+++ b/cells/mux2i/sky130_fd_sc_lp__mux2i_lp.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__mux2i_lp.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__mux2i_lp A0 A1 S VGND VNB VPB VPWR Y
 M1000 a_365_255# S a_510_527# VPB phighvt w=420000u l=150000u
@@ -26,4 +41,3 @@
 M1011 a_510_527# S VPWR VPB phighvt w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/mux2i/sky130_fd_sc_lp__mux2i_lp2.spice b/cells/mux2i/sky130_fd_sc_lp__mux2i_lp2.spice
index 11a24da..307ee64 100644
--- a/cells/mux2i/sky130_fd_sc_lp__mux2i_lp2.spice
+++ b/cells/mux2i/sky130_fd_sc_lp__mux2i_lp2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__mux2i_lp2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__mux2i_lp2 A0 A1 S VGND VNB VPB VPWR Y
 M1000 a_609_47# S VGND VNB nshort w=420000u l=150000u
@@ -24,4 +39,3 @@
 M1010 a_422_47# A0 Y VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/mux2i/sky130_fd_sc_lp__mux2i_m.spice b/cells/mux2i/sky130_fd_sc_lp__mux2i_m.spice
index c2887e8..bf2e7b6 100644
--- a/cells/mux2i/sky130_fd_sc_lp__mux2i_m.spice
+++ b/cells/mux2i/sky130_fd_sc_lp__mux2i_m.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__mux2i_m.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__mux2i_m A0 A1 S VGND VNB VPB VPWR Y
 M1000 VGND S a_416_125# VNB nshort w=420000u l=150000u
@@ -22,4 +37,3 @@
 M1009 a_416_125# A1 Y VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/mux4/sky130_fd_sc_lp__mux4_0.spice b/cells/mux4/sky130_fd_sc_lp__mux4_0.spice
index 051a963..a9f87d4 100644
--- a/cells/mux4/sky130_fd_sc_lp__mux4_0.spice
+++ b/cells/mux4/sky130_fd_sc_lp__mux4_0.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__mux4_0.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__mux4_0 A0 A1 A2 A3 S0 S1 VGND VNB VPB VPWR X
 M1000 a_294_506# a_1029_37# a_1075_493# VPB phighvt w=420000u l=150000u
@@ -54,4 +69,3 @@
 M1025 a_685_504# a_31_506# a_613_504# VPB phighvt w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/mux4/sky130_fd_sc_lp__mux4_1.spice b/cells/mux4/sky130_fd_sc_lp__mux4_1.spice
index 65fe9d5..e974d73 100644
--- a/cells/mux4/sky130_fd_sc_lp__mux4_1.spice
+++ b/cells/mux4/sky130_fd_sc_lp__mux4_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__mux4_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__mux4_1 A0 A1 A2 A3 S0 S1 VGND VNB VPB VPWR X
 M1000 VPWR A1 a_27_519# VPB phighvt w=420000u l=150000u
@@ -54,4 +69,3 @@
 M1025 a_799_501# A2 VPWR VPB phighvt w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/mux4/sky130_fd_sc_lp__mux4_2.spice b/cells/mux4/sky130_fd_sc_lp__mux4_2.spice
index f128f08..d1fba40 100644
--- a/cells/mux4/sky130_fd_sc_lp__mux4_2.spice
+++ b/cells/mux4/sky130_fd_sc_lp__mux4_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__mux4_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__mux4_2 A0 A1 A2 A3 S0 S1 VGND VNB VPB VPWR X
 M1000 a_196_125# S0 a_1223_119# VNB nshort w=420000u l=150000u
@@ -58,4 +73,3 @@
 M1027 a_196_125# a_859_351# a_1223_419# VPB phighvt w=640000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/mux4/sky130_fd_sc_lp__mux4_4.spice b/cells/mux4/sky130_fd_sc_lp__mux4_4.spice
index 3661a1e..81073d6 100644
--- a/cells/mux4/sky130_fd_sc_lp__mux4_4.spice
+++ b/cells/mux4/sky130_fd_sc_lp__mux4_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__mux4_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__mux4_4 A0 A1 A2 A3 S0 S1 VGND VNB VPB VPWR X
 M1000 a_200_119# a_1041_333# a_999_431# VPB phighvt w=640000u l=150000u
@@ -66,4 +81,3 @@
 M1031 a_114_119# a_84_277# a_27_119# VPB phighvt w=640000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/mux4/sky130_fd_sc_lp__mux4_lp.spice b/cells/mux4/sky130_fd_sc_lp__mux4_lp.spice
index 4b68f32..4ce7eb4 100644
--- a/cells/mux4/sky130_fd_sc_lp__mux4_lp.spice
+++ b/cells/mux4/sky130_fd_sc_lp__mux4_lp.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__mux4_lp.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__mux4_lp A0 A1 A2 A3 S0 S1 VGND VNB VPB VPWR X
 M1000 VGND A0 a_1600_47# VNB nshort w=420000u l=150000u
@@ -60,4 +75,3 @@
 M1028 a_946_317# S0 VPWR VPB phighvt w=1e+06u l=250000u
 +  ad=2.85e+11p pd=2.57e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/mux4/sky130_fd_sc_lp__mux4_m.spice b/cells/mux4/sky130_fd_sc_lp__mux4_m.spice
index f17a930..3a8b2e4 100644
--- a/cells/mux4/sky130_fd_sc_lp__mux4_m.spice
+++ b/cells/mux4/sky130_fd_sc_lp__mux4_m.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__mux4_m.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__mux4_m A0 A1 A2 A3 S0 S1 VGND VNB VPB VPWR X
 M1000 a_345_126# S0 a_273_463# VPB phighvt w=420000u l=150000u
@@ -54,4 +69,3 @@
 M1025 VGND S1 a_1118_37# VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=1.113e+11p ps=1.37e+06u
 .ends
-
diff --git a/cells/nand2/sky130_fd_sc_lp__nand2_0.spice b/cells/nand2/sky130_fd_sc_lp__nand2_0.spice
index 3db78b5..485b555 100644
--- a/cells/nand2/sky130_fd_sc_lp__nand2_0.spice
+++ b/cells/nand2/sky130_fd_sc_lp__nand2_0.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__nand2_0.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__nand2_0 A B VGND VNB VPB VPWR Y
 M1000 Y B VPWR VPB phighvt w=640000u l=150000u
@@ -10,4 +25,3 @@
 M1003 a_124_47# B VGND VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=1.113e+11p ps=1.37e+06u
 .ends
-
diff --git a/cells/nand2/sky130_fd_sc_lp__nand2_1.spice b/cells/nand2/sky130_fd_sc_lp__nand2_1.spice
index db79efe..60df2e1 100644
--- a/cells/nand2/sky130_fd_sc_lp__nand2_1.spice
+++ b/cells/nand2/sky130_fd_sc_lp__nand2_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__nand2_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__nand2_1 A B VGND VNB VPB VPWR Y
 M1000 a_112_69# B VGND VNB nshort w=840000u l=150000u
@@ -10,4 +25,3 @@
 M1003 Y B VPWR VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/nand2/sky130_fd_sc_lp__nand2_2.spice b/cells/nand2/sky130_fd_sc_lp__nand2_2.spice
index 9661064..a35c192 100644
--- a/cells/nand2/sky130_fd_sc_lp__nand2_2.spice
+++ b/cells/nand2/sky130_fd_sc_lp__nand2_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__nand2_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__nand2_2 A B VGND VNB VPB VPWR Y
 M1000 Y A VPWR VPB phighvt w=1.26e+06u l=150000u
@@ -18,4 +33,3 @@
 M1007 a_27_65# A Y VNB nshort w=840000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/nand2/sky130_fd_sc_lp__nand2_4.spice b/cells/nand2/sky130_fd_sc_lp__nand2_4.spice
index 93d7aad..dd95450 100644
--- a/cells/nand2/sky130_fd_sc_lp__nand2_4.spice
+++ b/cells/nand2/sky130_fd_sc_lp__nand2_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__nand2_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__nand2_4 A B VGND VNB VPB VPWR Y
 M1000 VPWR B Y VPB phighvt w=1.26e+06u l=150000u
@@ -34,4 +49,3 @@
 M1015 VGND B a_63_65# VNB nshort w=840000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/nand2/sky130_fd_sc_lp__nand2_8.spice b/cells/nand2/sky130_fd_sc_lp__nand2_8.spice
index 5e39a4d..c57ecf9 100644
--- a/cells/nand2/sky130_fd_sc_lp__nand2_8.spice
+++ b/cells/nand2/sky130_fd_sc_lp__nand2_8.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__nand2_8.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__nand2_8 A B VGND VNB VPB VPWR Y
 M1000 Y B VPWR VPB phighvt w=1.26e+06u l=150000u
@@ -66,4 +81,3 @@
 M1031 a_27_65# B VGND VNB nshort w=840000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/nand2/sky130_fd_sc_lp__nand2_lp.spice b/cells/nand2/sky130_fd_sc_lp__nand2_lp.spice
index 016cc84..a755d0b 100644
--- a/cells/nand2/sky130_fd_sc_lp__nand2_lp.spice
+++ b/cells/nand2/sky130_fd_sc_lp__nand2_lp.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__nand2_lp.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__nand2_lp A B VGND VNB VPB VPWR Y
 M1000 a_121_57# B VGND VNB nshort w=420000u l=150000u
@@ -14,4 +29,3 @@
 M1005 a_207_367# A VPWR VPB phighvt w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/nand2/sky130_fd_sc_lp__nand2_lp2.spice b/cells/nand2/sky130_fd_sc_lp__nand2_lp2.spice
index f5db8f0..7853ce2 100644
--- a/cells/nand2/sky130_fd_sc_lp__nand2_lp2.spice
+++ b/cells/nand2/sky130_fd_sc_lp__nand2_lp2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__nand2_lp2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__nand2_lp2 A B VGND VNB VPB VPWR Y
 M1000 Y A a_151_57# VNB nshort w=420000u l=150000u
@@ -10,4 +25,3 @@
 M1003 Y B VPWR VPB phighvt w=1e+06u l=250000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/nand2/sky130_fd_sc_lp__nand2_m.spice b/cells/nand2/sky130_fd_sc_lp__nand2_m.spice
index fc868bf..f75ba3e 100644
--- a/cells/nand2/sky130_fd_sc_lp__nand2_m.spice
+++ b/cells/nand2/sky130_fd_sc_lp__nand2_m.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__nand2_m.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__nand2_m A B VGND VNB VPB VPWR Y
 M1000 Y B VPWR VPB phighvt w=420000u l=150000u
@@ -10,4 +25,3 @@
 M1003 a_124_47# B VGND VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=1.113e+11p ps=1.37e+06u
 .ends
-
diff --git a/cells/nand2b/sky130_fd_sc_lp__nand2b_1.spice b/cells/nand2b/sky130_fd_sc_lp__nand2b_1.spice
index 353b95e..01617b9 100644
--- a/cells/nand2b/sky130_fd_sc_lp__nand2b_1.spice
+++ b/cells/nand2b/sky130_fd_sc_lp__nand2b_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__nand2b_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__nand2b_1 A_N B VGND VNB VPB VPWR Y
 M1000 VGND A_N a_40_367# VNB nshort w=420000u l=150000u
@@ -14,4 +29,3 @@
 M1005 VPWR a_40_367# Y VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/nand2b/sky130_fd_sc_lp__nand2b_2.spice b/cells/nand2b/sky130_fd_sc_lp__nand2b_2.spice
index 1c4bf66..b3a5947 100644
--- a/cells/nand2b/sky130_fd_sc_lp__nand2b_2.spice
+++ b/cells/nand2b/sky130_fd_sc_lp__nand2b_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__nand2b_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__nand2b_2 A_N B VGND VNB VPB VPWR Y
 M1000 VGND B a_229_47# VNB nshort w=840000u l=150000u
@@ -22,4 +37,3 @@
 M1009 a_229_47# B VGND VNB nshort w=840000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/nand2b/sky130_fd_sc_lp__nand2b_4.spice b/cells/nand2b/sky130_fd_sc_lp__nand2b_4.spice
index 2723923..632a58a 100644
--- a/cells/nand2b/sky130_fd_sc_lp__nand2b_4.spice
+++ b/cells/nand2b/sky130_fd_sc_lp__nand2b_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__nand2b_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__nand2b_4 A_N B VGND VNB VPB VPWR Y
 M1000 Y a_27_51# a_217_65# VNB nshort w=840000u l=150000u
@@ -38,4 +53,3 @@
 M1017 Y B VPWR VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/nand2b/sky130_fd_sc_lp__nand2b_lp.spice b/cells/nand2b/sky130_fd_sc_lp__nand2b_lp.spice
index 266c4ec..636ef85 100644
--- a/cells/nand2b/sky130_fd_sc_lp__nand2b_lp.spice
+++ b/cells/nand2b/sky130_fd_sc_lp__nand2b_lp.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__nand2b_lp.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__nand2b_lp A_N B VGND VNB VPB VPWR Y
 M1000 a_119_51# A_N a_32_51# VNB nshort w=420000u l=150000u
@@ -16,4 +31,3 @@
 M1006 Y B VPWR VPB phighvt w=1e+06u l=250000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/nand2b/sky130_fd_sc_lp__nand2b_m.spice b/cells/nand2b/sky130_fd_sc_lp__nand2b_m.spice
index 366cee2..963898e 100644
--- a/cells/nand2b/sky130_fd_sc_lp__nand2b_m.spice
+++ b/cells/nand2b/sky130_fd_sc_lp__nand2b_m.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__nand2b_m.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__nand2b_m A_N B VGND VNB VPB VPWR Y
 M1000 VPWR a_46_54# Y VPB phighvt w=420000u l=150000u
@@ -14,4 +29,3 @@
 M1005 VPWR A_N a_46_54# VPB phighvt w=420000u l=150000u
 +  ad=0p pd=0u as=1.113e+11p ps=1.37e+06u
 .ends
-
diff --git a/cells/nand3/sky130_fd_sc_lp__nand3_0.spice b/cells/nand3/sky130_fd_sc_lp__nand3_0.spice
index f86a460..4f4c226 100644
--- a/cells/nand3/sky130_fd_sc_lp__nand3_0.spice
+++ b/cells/nand3/sky130_fd_sc_lp__nand3_0.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__nand3_0.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__nand3_0 A B C VGND VNB VPB VPWR Y
 M1000 a_117_47# C VGND VNB nshort w=420000u l=150000u
@@ -14,4 +29,3 @@
 M1005 Y A a_195_47# VNB nshort w=420000u l=150000u
 +  ad=1.113e+11p pd=1.37e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/nand3/sky130_fd_sc_lp__nand3_1.spice b/cells/nand3/sky130_fd_sc_lp__nand3_1.spice
index ff69c96..c885583 100644
--- a/cells/nand3/sky130_fd_sc_lp__nand3_1.spice
+++ b/cells/nand3/sky130_fd_sc_lp__nand3_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__nand3_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__nand3_1 A B C VGND VNB VPB VPWR Y
 M1000 Y C VPWR VPB phighvt w=1.26e+06u l=150000u
@@ -14,4 +29,3 @@
 M1005 a_141_76# C VGND VNB nshort w=840000u l=150000u
 +  ad=0p pd=0u as=2.226e+11p ps=2.21e+06u
 .ends
-
diff --git a/cells/nand3/sky130_fd_sc_lp__nand3_2.spice b/cells/nand3/sky130_fd_sc_lp__nand3_2.spice
index b79d4a3..13472be 100644
--- a/cells/nand3/sky130_fd_sc_lp__nand3_2.spice
+++ b/cells/nand3/sky130_fd_sc_lp__nand3_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__nand3_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__nand3_2 A B C VGND VNB VPB VPWR Y
 M1000 VGND C a_298_65# VNB nshort w=840000u l=150000u
@@ -26,4 +41,3 @@
 M1011 Y C VPWR VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/nand3/sky130_fd_sc_lp__nand3_4.spice b/cells/nand3/sky130_fd_sc_lp__nand3_4.spice
index 1d6bf83..d9230e0 100644
--- a/cells/nand3/sky130_fd_sc_lp__nand3_4.spice
+++ b/cells/nand3/sky130_fd_sc_lp__nand3_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__nand3_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__nand3_4 A B C VGND VNB VPB VPWR Y
 M1000 Y A VPWR VPB phighvt w=1.26e+06u l=150000u
@@ -50,4 +65,3 @@
 M1023 Y A VPWR VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/nand3/sky130_fd_sc_lp__nand3_lp.spice b/cells/nand3/sky130_fd_sc_lp__nand3_lp.spice
index bf79320..4389a01 100644
--- a/cells/nand3/sky130_fd_sc_lp__nand3_lp.spice
+++ b/cells/nand3/sky130_fd_sc_lp__nand3_lp.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__nand3_lp.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__nand3_lp A B C VGND VNB VPB VPWR Y
 M1000 Y C VPWR VPB phighvt w=1e+06u l=250000u
@@ -14,4 +29,3 @@
 M1005 a_233_47# B a_155_47# VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/nand3/sky130_fd_sc_lp__nand3_m.spice b/cells/nand3/sky130_fd_sc_lp__nand3_m.spice
index 09aa0fb..3f344da 100644
--- a/cells/nand3/sky130_fd_sc_lp__nand3_m.spice
+++ b/cells/nand3/sky130_fd_sc_lp__nand3_m.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__nand3_m.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__nand3_m A B C VGND VNB VPB VPWR Y
 M1000 a_117_47# C VGND VNB nshort w=420000u l=150000u
@@ -14,4 +29,3 @@
 M1005 Y A a_195_47# VNB nshort w=420000u l=150000u
 +  ad=1.113e+11p pd=1.37e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/nand3b/sky130_fd_sc_lp__nand3b_1.spice b/cells/nand3b/sky130_fd_sc_lp__nand3b_1.spice
index e6e3519..86c118e 100644
--- a/cells/nand3b/sky130_fd_sc_lp__nand3b_1.spice
+++ b/cells/nand3b/sky130_fd_sc_lp__nand3b_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__nand3b_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__nand3b_1 A_N B C VGND VNB VPB VPWR Y
 M1000 a_366_47# B a_275_47# VNB nshort w=840000u l=150000u
@@ -18,4 +33,3 @@
 M1007 Y C VPWR VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/nand3b/sky130_fd_sc_lp__nand3b_2.spice b/cells/nand3b/sky130_fd_sc_lp__nand3b_2.spice
index 8bb0b04..e243f2f 100644
--- a/cells/nand3b/sky130_fd_sc_lp__nand3b_2.spice
+++ b/cells/nand3b/sky130_fd_sc_lp__nand3b_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__nand3b_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__nand3b_2 A_N B C VGND VNB VPB VPWR Y
 M1000 Y a_55_155# a_332_71# VNB nshort w=840000u l=150000u
@@ -30,4 +45,3 @@
 M1013 VPWR B Y VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/nand3b/sky130_fd_sc_lp__nand3b_4.spice b/cells/nand3b/sky130_fd_sc_lp__nand3b_4.spice
index 5a025ca..b827547 100644
--- a/cells/nand3b/sky130_fd_sc_lp__nand3b_4.spice
+++ b/cells/nand3b/sky130_fd_sc_lp__nand3b_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__nand3b_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__nand3b_4 A_N B C VGND VNB VPB VPWR Y
 M1000 a_225_47# a_35_74# Y VNB nshort w=840000u l=150000u
@@ -54,4 +69,3 @@
 M1025 a_225_47# a_35_74# Y VNB nshort w=840000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/nand3b/sky130_fd_sc_lp__nand3b_lp.spice b/cells/nand3b/sky130_fd_sc_lp__nand3b_lp.spice
index ee57f40..e6eeb60 100644
--- a/cells/nand3b/sky130_fd_sc_lp__nand3b_lp.spice
+++ b/cells/nand3b/sky130_fd_sc_lp__nand3b_lp.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__nand3b_lp.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__nand3b_lp A_N B C VGND VNB VPB VPWR Y
 M1000 a_156_141# a_90_247# Y VNB nshort w=420000u l=150000u
@@ -20,4 +35,3 @@
 M1008 a_90_247# A_N VPWR VPB phighvt w=1e+06u l=250000u
 +  ad=2.85e+11p pd=2.57e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/nand3b/sky130_fd_sc_lp__nand3b_m.spice b/cells/nand3b/sky130_fd_sc_lp__nand3b_m.spice
index 6d19b57..46617af 100644
--- a/cells/nand3b/sky130_fd_sc_lp__nand3b_m.spice
+++ b/cells/nand3b/sky130_fd_sc_lp__nand3b_m.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__nand3b_m.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__nand3b_m A_N B C VGND VNB VPB VPWR Y
 M1000 VPWR A_N a_37_47# VPB phighvt w=420000u l=150000u
@@ -18,4 +33,3 @@
 M1007 a_251_47# C VGND VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/nand4/sky130_fd_sc_lp__nand4_0.spice b/cells/nand4/sky130_fd_sc_lp__nand4_0.spice
index b8eed5e..40a5b74 100644
--- a/cells/nand4/sky130_fd_sc_lp__nand4_0.spice
+++ b/cells/nand4/sky130_fd_sc_lp__nand4_0.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__nand4_0.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__nand4_0 A B C D VGND VNB VPB VPWR Y
 M1000 VPWR A Y VPB phighvt w=640000u l=150000u
@@ -18,4 +33,3 @@
 M1007 a_351_47# B a_237_47# VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/nand4/sky130_fd_sc_lp__nand4_1.spice b/cells/nand4/sky130_fd_sc_lp__nand4_1.spice
index b2cbdd3..258baed 100644
--- a/cells/nand4/sky130_fd_sc_lp__nand4_1.spice
+++ b/cells/nand4/sky130_fd_sc_lp__nand4_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__nand4_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__nand4_1 A B C D VGND VNB VPB VPWR Y
 M1000 a_325_47# B a_211_47# VNB nshort w=840000u l=150000u
@@ -18,4 +33,3 @@
 M1007 a_133_47# D VGND VNB nshort w=840000u l=150000u
 +  ad=0p pd=0u as=2.226e+11p ps=2.21e+06u
 .ends
-
diff --git a/cells/nand4/sky130_fd_sc_lp__nand4_2.spice b/cells/nand4/sky130_fd_sc_lp__nand4_2.spice
index a9a676e..1b4fa2f 100644
--- a/cells/nand4/sky130_fd_sc_lp__nand4_2.spice
+++ b/cells/nand4/sky130_fd_sc_lp__nand4_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__nand4_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__nand4_2 A B C D VGND VNB VPB VPWR Y
 M1000 VPWR D Y VPB phighvt w=1.26e+06u l=150000u
@@ -34,4 +49,3 @@
 M1015 VPWR B Y VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/nand4/sky130_fd_sc_lp__nand4_4.spice b/cells/nand4/sky130_fd_sc_lp__nand4_4.spice
index 85d87fa..9414019 100644
--- a/cells/nand4/sky130_fd_sc_lp__nand4_4.spice
+++ b/cells/nand4/sky130_fd_sc_lp__nand4_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__nand4_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__nand4_4 A B C D VGND VNB VPB VPWR Y
 M1000 Y D VPWR VPB phighvt w=1.26e+06u l=150000u
@@ -66,4 +81,3 @@
 M1031 a_27_65# D VGND VNB nshort w=840000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/nand4/sky130_fd_sc_lp__nand4_lp.spice b/cells/nand4/sky130_fd_sc_lp__nand4_lp.spice
index 93f4aeb..05a619e 100644
--- a/cells/nand4/sky130_fd_sc_lp__nand4_lp.spice
+++ b/cells/nand4/sky130_fd_sc_lp__nand4_lp.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__nand4_lp.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__nand4_lp A B C D VGND VNB VPB VPWR Y
 M1000 VPWR C Y VPB phighvt w=1e+06u l=250000u
@@ -18,4 +33,3 @@
 M1007 Y B VPWR VPB phighvt w=1e+06u l=250000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/nand4/sky130_fd_sc_lp__nand4_m.spice b/cells/nand4/sky130_fd_sc_lp__nand4_m.spice
index 47c9caa..f65c7e7 100644
--- a/cells/nand4/sky130_fd_sc_lp__nand4_m.spice
+++ b/cells/nand4/sky130_fd_sc_lp__nand4_m.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__nand4_m.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__nand4_m A B C D VGND VNB VPB VPWR Y
 M1000 VPWR A Y VPB phighvt w=420000u l=150000u
@@ -18,4 +33,3 @@
 M1007 a_351_47# B a_237_47# VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/nand4b/sky130_fd_sc_lp__nand4b_1.spice b/cells/nand4b/sky130_fd_sc_lp__nand4b_1.spice
index e95b57a..281edd4 100644
--- a/cells/nand4b/sky130_fd_sc_lp__nand4b_1.spice
+++ b/cells/nand4b/sky130_fd_sc_lp__nand4b_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__nand4b_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__nand4b_1 A_N B C D VGND VNB VPB VPWR Y
 M1000 Y a_71_131# a_442_47# VNB nshort w=840000u l=150000u
@@ -22,4 +37,3 @@
 M1009 VPWR a_71_131# Y VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/nand4b/sky130_fd_sc_lp__nand4b_2.spice b/cells/nand4b/sky130_fd_sc_lp__nand4b_2.spice
index 82e4b8e..3cdd097 100644
--- a/cells/nand4b/sky130_fd_sc_lp__nand4b_2.spice
+++ b/cells/nand4b/sky130_fd_sc_lp__nand4b_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__nand4b_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__nand4b_2 A_N B C D VGND VNB VPB VPWR Y
 M1000 a_486_65# B a_217_65# VNB nshort w=840000u l=150000u
@@ -38,4 +53,3 @@
 M1017 Y D VPWR VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/nand4b/sky130_fd_sc_lp__nand4b_4.spice b/cells/nand4b/sky130_fd_sc_lp__nand4b_4.spice
index 1289acc..cc89b6b 100644
--- a/cells/nand4b/sky130_fd_sc_lp__nand4b_4.spice
+++ b/cells/nand4b/sky130_fd_sc_lp__nand4b_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__nand4b_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__nand4b_4 A_N B C D VGND VNB VPB VPWR Y
 M1000 VPWR A_N a_27_51# VPB phighvt w=1.26e+06u l=150000u
@@ -70,4 +85,3 @@
 M1033 Y B VPWR VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/nand4b/sky130_fd_sc_lp__nand4b_lp.spice b/cells/nand4b/sky130_fd_sc_lp__nand4b_lp.spice
index d95fa93..19c1eb9 100644
--- a/cells/nand4b/sky130_fd_sc_lp__nand4b_lp.spice
+++ b/cells/nand4b/sky130_fd_sc_lp__nand4b_lp.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__nand4b_lp.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__nand4b_lp A_N B C D VGND VNB VPB VPWR Y
 M1000 a_173_47# a_87_231# Y VNB nshort w=420000u l=150000u
@@ -24,4 +39,3 @@
 M1010 a_87_231# A_N a_509_47# VNB nshort w=420000u l=150000u
 +  ad=1.197e+11p pd=1.41e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/nand4b/sky130_fd_sc_lp__nand4b_m.spice b/cells/nand4b/sky130_fd_sc_lp__nand4b_m.spice
index 5a956e9..3df5552 100644
--- a/cells/nand4b/sky130_fd_sc_lp__nand4b_m.spice
+++ b/cells/nand4b/sky130_fd_sc_lp__nand4b_m.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__nand4b_m.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__nand4b_m A_N B C D VGND VNB VPB VPWR Y
 M1000 VPWR C Y VPB phighvt w=420000u l=150000u
@@ -22,4 +37,3 @@
 M1009 a_343_52# C a_271_52# VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/nand4bb/sky130_fd_sc_lp__nand4bb_1.spice b/cells/nand4bb/sky130_fd_sc_lp__nand4bb_1.spice
index 913e4ac..06997f8 100644
--- a/cells/nand4bb/sky130_fd_sc_lp__nand4bb_1.spice
+++ b/cells/nand4bb/sky130_fd_sc_lp__nand4bb_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__nand4bb_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__nand4bb_1 A_N B_N C D VGND VNB VPB VPWR Y
 M1000 Y a_49_367# VPWR VPB phighvt w=1.26e+06u l=150000u
@@ -26,4 +41,3 @@
 M1011 Y D VPWR VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/nand4bb/sky130_fd_sc_lp__nand4bb_2.spice b/cells/nand4bb/sky130_fd_sc_lp__nand4bb_2.spice
index 253bc39..fa4a4f1 100644
--- a/cells/nand4bb/sky130_fd_sc_lp__nand4bb_2.spice
+++ b/cells/nand4bb/sky130_fd_sc_lp__nand4bb_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__nand4bb_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__nand4bb_2 A_N B_N C D VGND VNB VPB VPWR Y
 M1000 VPWR B_N a_27_373# VPB phighvt w=420000u l=150000u
@@ -42,4 +57,3 @@
 M1019 VPWR C Y VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/nand4bb/sky130_fd_sc_lp__nand4bb_4.spice b/cells/nand4bb/sky130_fd_sc_lp__nand4bb_4.spice
index d2181bc..8972860 100644
--- a/cells/nand4bb/sky130_fd_sc_lp__nand4bb_4.spice
+++ b/cells/nand4bb/sky130_fd_sc_lp__nand4bb_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__nand4bb_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__nand4bb_4 A_N B_N C D VGND VNB VPB VPWR Y
 M1000 a_324_45# a_217_69# a_842_67# VNB nshort w=840000u l=150000u
@@ -74,4 +89,3 @@
 M1035 Y a_44_69# VPWR VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/nand4bb/sky130_fd_sc_lp__nand4bb_lp.spice b/cells/nand4bb/sky130_fd_sc_lp__nand4bb_lp.spice
index d29ae63..3cc201b 100644
--- a/cells/nand4bb/sky130_fd_sc_lp__nand4bb_lp.spice
+++ b/cells/nand4bb/sky130_fd_sc_lp__nand4bb_lp.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__nand4bb_lp.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__nand4bb_lp A_N B_N C D VGND VNB VPB VPWR Y
 M1000 Y a_27_47# VPWR VPB phighvt w=1e+06u l=250000u
@@ -30,4 +45,3 @@
 M1013 VGND D a_534_47# VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/nand4bb/sky130_fd_sc_lp__nand4bb_m.spice b/cells/nand4bb/sky130_fd_sc_lp__nand4bb_m.spice
index 26b0745..36c6fa5 100644
--- a/cells/nand4bb/sky130_fd_sc_lp__nand4bb_m.spice
+++ b/cells/nand4bb/sky130_fd_sc_lp__nand4bb_m.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__nand4bb_m.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__nand4bb_m A_N B_N C D VGND VNB VPB VPWR Y
 M1000 a_247_151# D VGND VNB nshort w=420000u l=150000u
@@ -26,4 +41,3 @@
 M1011 a_319_151# C a_247_151# VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/nor2/sky130_fd_sc_lp__nor2_0.spice b/cells/nor2/sky130_fd_sc_lp__nor2_0.spice
index 05f7f14..d5c49a8 100644
--- a/cells/nor2/sky130_fd_sc_lp__nor2_0.spice
+++ b/cells/nor2/sky130_fd_sc_lp__nor2_0.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__nor2_0.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__nor2_0 A B VGND VNB VPB VPWR Y
 M1000 VGND B Y VNB nshort w=420000u l=150000u
@@ -10,4 +25,3 @@
 M1003 Y A VGND VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/nor2/sky130_fd_sc_lp__nor2_1.spice b/cells/nor2/sky130_fd_sc_lp__nor2_1.spice
index 8454a7f..80f8b4a 100644
--- a/cells/nor2/sky130_fd_sc_lp__nor2_1.spice
+++ b/cells/nor2/sky130_fd_sc_lp__nor2_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__nor2_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__nor2_1 A B VGND VNB VPB VPWR Y
 M1000 a_116_367# A VPWR VPB phighvt w=1.26e+06u l=150000u
@@ -10,4 +25,3 @@
 M1003 Y A VGND VNB nshort w=840000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/nor2/sky130_fd_sc_lp__nor2_2.spice b/cells/nor2/sky130_fd_sc_lp__nor2_2.spice
index 071e25e..2465b72 100644
--- a/cells/nor2/sky130_fd_sc_lp__nor2_2.spice
+++ b/cells/nor2/sky130_fd_sc_lp__nor2_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__nor2_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__nor2_2 A B VGND VNB VPB VPWR Y
 M1000 Y A VGND VNB nshort w=840000u l=150000u
@@ -18,4 +33,3 @@
 M1007 Y B a_28_367# VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/nor2/sky130_fd_sc_lp__nor2_4.spice b/cells/nor2/sky130_fd_sc_lp__nor2_4.spice
index 089aa21..442ab5b 100644
--- a/cells/nor2/sky130_fd_sc_lp__nor2_4.spice
+++ b/cells/nor2/sky130_fd_sc_lp__nor2_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__nor2_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__nor2_4 A B VGND VNB VPB VPWR Y
 M1000 a_73_367# A VPWR VPB phighvt w=1.26e+06u l=150000u
@@ -34,4 +49,3 @@
 M1015 Y B a_73_367# VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/nor2/sky130_fd_sc_lp__nor2_8.spice b/cells/nor2/sky130_fd_sc_lp__nor2_8.spice
index 91eda02..7bb5fe4 100644
--- a/cells/nor2/sky130_fd_sc_lp__nor2_8.spice
+++ b/cells/nor2/sky130_fd_sc_lp__nor2_8.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__nor2_8.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__nor2_8 A B VGND VNB VPB VPWR Y
 M1000 VPWR A a_47_367# VPB phighvt w=1.26e+06u l=150000u
@@ -66,4 +81,3 @@
 M1031 Y A VGND VNB nshort w=840000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/nor2/sky130_fd_sc_lp__nor2_lp.spice b/cells/nor2/sky130_fd_sc_lp__nor2_lp.spice
index 4e8cb22..77fb1e2 100644
--- a/cells/nor2/sky130_fd_sc_lp__nor2_lp.spice
+++ b/cells/nor2/sky130_fd_sc_lp__nor2_lp.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__nor2_lp.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__nor2_lp A B VNB VPB Y
 M1000 a_130_112# A VNB w_0_0# nshort w=420000u l=150000u
@@ -14,4 +29,3 @@
 M1005 Y B a_130_490# w_n38_331# phighvt w=420000u l=150000u
 +  ad=1.197e+11p pd=1.41e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/nor2/sky130_fd_sc_lp__nor2_lp2.spice b/cells/nor2/sky130_fd_sc_lp__nor2_lp2.spice
index b67d7e9..043e6d1 100644
--- a/cells/nor2/sky130_fd_sc_lp__nor2_lp2.spice
+++ b/cells/nor2/sky130_fd_sc_lp__nor2_lp2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__nor2_lp2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__nor2_lp2 A B VGND VNB VPB VPWR Y
 M1000 a_130_112# A VGND VNB nshort w=420000u l=150000u
@@ -14,4 +29,3 @@
 M1005 a_134_374# A VPWR VPB phighvt w=1e+06u l=250000u
 +  ad=0p pd=0u as=2.85e+11p ps=2.57e+06u
 .ends
-
diff --git a/cells/nor2/sky130_fd_sc_lp__nor2_m.spice b/cells/nor2/sky130_fd_sc_lp__nor2_m.spice
index 97074af..16da749 100644
--- a/cells/nor2/sky130_fd_sc_lp__nor2_m.spice
+++ b/cells/nor2/sky130_fd_sc_lp__nor2_m.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__nor2_m.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__nor2_m A B VGND VNB VPB VPWR Y
 M1000 VGND B Y VNB nshort w=420000u l=150000u
@@ -10,4 +25,3 @@
 M1003 Y A VGND VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/nor2b/sky130_fd_sc_lp__nor2b_1.spice b/cells/nor2b/sky130_fd_sc_lp__nor2b_1.spice
index b4f7577..dca3dc7 100644
--- a/cells/nor2b/sky130_fd_sc_lp__nor2b_1.spice
+++ b/cells/nor2b/sky130_fd_sc_lp__nor2b_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__nor2b_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__nor2b_1 A B_N VGND VNB VPB VPWR Y
 M1000 Y a_79_47# a_283_367# VPB phighvt w=1.26e+06u l=150000u
@@ -14,4 +29,3 @@
 M1005 a_283_367# A VPWR VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/nor2b/sky130_fd_sc_lp__nor2b_2.spice b/cells/nor2b/sky130_fd_sc_lp__nor2b_2.spice
index 771cfd5..aac2750 100644
--- a/cells/nor2b/sky130_fd_sc_lp__nor2b_2.spice
+++ b/cells/nor2b/sky130_fd_sc_lp__nor2b_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__nor2b_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__nor2b_2 A B_N VGND VNB VPB VPWR Y
 M1000 VGND A Y VNB nshort w=840000u l=150000u
@@ -22,4 +37,3 @@
 M1009 a_283_367# A VPWR VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/nor2b/sky130_fd_sc_lp__nor2b_4.spice b/cells/nor2b/sky130_fd_sc_lp__nor2b_4.spice
index 3e58967..1b6f59d 100644
--- a/cells/nor2b/sky130_fd_sc_lp__nor2b_4.spice
+++ b/cells/nor2b/sky130_fd_sc_lp__nor2b_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__nor2b_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__nor2b_4 A B_N VGND VNB VPB VPWR Y
 M1000 a_245_367# A VPWR VPB phighvt w=1.26e+06u l=150000u
@@ -38,4 +53,3 @@
 M1017 VGND a_60_47# Y VNB nshort w=840000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/nor2b/sky130_fd_sc_lp__nor2b_lp.spice b/cells/nor2b/sky130_fd_sc_lp__nor2b_lp.spice
index 4203fdd..c55b65a 100644
--- a/cells/nor2b/sky130_fd_sc_lp__nor2b_lp.spice
+++ b/cells/nor2b/sky130_fd_sc_lp__nor2b_lp.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__nor2b_lp.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__nor2b_lp A B_N VGND VNB VPB VPWR Y
 M1000 a_195_57# A VGND VNB nshort w=420000u l=150000u
@@ -20,4 +35,3 @@
 M1008 Y a_303_300# a_255_408# VPB phighvt w=1e+06u l=250000u
 +  ad=2.85e+11p pd=2.57e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/nor2b/sky130_fd_sc_lp__nor2b_m.spice b/cells/nor2b/sky130_fd_sc_lp__nor2b_m.spice
index 60b7aaf..b15a79a 100644
--- a/cells/nor2b/sky130_fd_sc_lp__nor2b_m.spice
+++ b/cells/nor2b/sky130_fd_sc_lp__nor2b_m.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__nor2b_m.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__nor2b_m A B_N VGND VNB VPB VPWR Y
 M1000 Y a_47_70# a_328_492# VPB phighvt w=420000u l=150000u
@@ -14,4 +29,3 @@
 M1005 Y A VGND VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/nor3/sky130_fd_sc_lp__nor3_0.spice b/cells/nor3/sky130_fd_sc_lp__nor3_0.spice
index 17c67e5..decd91c 100644
--- a/cells/nor3/sky130_fd_sc_lp__nor3_0.spice
+++ b/cells/nor3/sky130_fd_sc_lp__nor3_0.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__nor3_0.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__nor3_0 A B C VGND VNB VPB VPWR Y
 M1000 a_123_483# A VPWR VPB phighvt w=640000u l=150000u
@@ -14,4 +29,3 @@
 M1005 Y C a_201_483# VPB phighvt w=640000u l=150000u
 +  ad=1.696e+11p pd=1.81e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/nor3/sky130_fd_sc_lp__nor3_1.spice b/cells/nor3/sky130_fd_sc_lp__nor3_1.spice
index 59ec0f1..47debb6 100644
--- a/cells/nor3/sky130_fd_sc_lp__nor3_1.spice
+++ b/cells/nor3/sky130_fd_sc_lp__nor3_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__nor3_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__nor3_1 A B C VGND VNB VPB VPWR Y
 M1000 Y C a_202_367# VPB phighvt w=1.26e+06u l=150000u
@@ -14,4 +29,3 @@
 M1005 a_110_367# A VPWR VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=3.339e+11p ps=3.05e+06u
 .ends
-
diff --git a/cells/nor3/sky130_fd_sc_lp__nor3_2.spice b/cells/nor3/sky130_fd_sc_lp__nor3_2.spice
index d4c6ab9..ffb8a27 100644
--- a/cells/nor3/sky130_fd_sc_lp__nor3_2.spice
+++ b/cells/nor3/sky130_fd_sc_lp__nor3_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__nor3_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__nor3_2 A B C VGND VNB VPB VPWR Y
 M1000 VPWR A a_36_367# VPB phighvt w=1.26e+06u l=150000u
@@ -26,4 +41,3 @@
 M1011 Y B VGND VNB nshort w=840000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/nor3/sky130_fd_sc_lp__nor3_4.spice b/cells/nor3/sky130_fd_sc_lp__nor3_4.spice
index 901fab0..8832ddd 100644
--- a/cells/nor3/sky130_fd_sc_lp__nor3_4.spice
+++ b/cells/nor3/sky130_fd_sc_lp__nor3_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__nor3_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__nor3_4 A B C VGND VNB VPB VPWR Y
 M1000 a_456_367# B a_29_367# VPB phighvt w=1.26e+06u l=150000u
@@ -50,4 +65,3 @@
 M1023 VGND B Y VNB nshort w=840000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/nor3/sky130_fd_sc_lp__nor3_lp.spice b/cells/nor3/sky130_fd_sc_lp__nor3_lp.spice
index 0222dfb..c4db88c 100644
--- a/cells/nor3/sky130_fd_sc_lp__nor3_lp.spice
+++ b/cells/nor3/sky130_fd_sc_lp__nor3_lp.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__nor3_lp.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__nor3_lp A B C VGND VNB VPB VPWR Y
 M1000 a_173_57# C Y VNB nshort w=420000u l=150000u
@@ -20,4 +35,3 @@
 M1008 a_489_57# A Y VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/nor3/sky130_fd_sc_lp__nor3_m.spice b/cells/nor3/sky130_fd_sc_lp__nor3_m.spice
index 7ff59c9..9cf107d 100644
--- a/cells/nor3/sky130_fd_sc_lp__nor3_m.spice
+++ b/cells/nor3/sky130_fd_sc_lp__nor3_m.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__nor3_m.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__nor3_m A B C VGND VNB VPB VPWR Y
 M1000 a_123_483# A VPWR VPB phighvt w=420000u l=150000u
@@ -14,4 +29,3 @@
 M1005 Y C a_201_483# VPB phighvt w=420000u l=150000u
 +  ad=1.113e+11p pd=1.37e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/nor3b/sky130_fd_sc_lp__nor3b_1.spice b/cells/nor3b/sky130_fd_sc_lp__nor3b_1.spice
index 43827be..ecdddb1 100644
--- a/cells/nor3b/sky130_fd_sc_lp__nor3b_1.spice
+++ b/cells/nor3b/sky130_fd_sc_lp__nor3b_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__nor3b_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__nor3b_1 A B C_N VGND VNB VPB VPWR Y
 M1000 VGND C_N a_82_131# VNB nshort w=420000u l=150000u
@@ -18,4 +33,3 @@
 M1007 a_347_367# B a_275_367# VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/nor3b/sky130_fd_sc_lp__nor3b_2.spice b/cells/nor3b/sky130_fd_sc_lp__nor3b_2.spice
index 95bf85a..24b9767 100644
--- a/cells/nor3b/sky130_fd_sc_lp__nor3b_2.spice
+++ b/cells/nor3b/sky130_fd_sc_lp__nor3b_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__nor3b_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__nor3b_2 A B C_N VGND VNB VPB VPWR Y
 M1000 VGND a_27_131# Y VNB nshort w=840000u l=150000u
@@ -30,4 +45,3 @@
 M1013 a_472_365# A VPWR VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/nor3b/sky130_fd_sc_lp__nor3b_4.spice b/cells/nor3b/sky130_fd_sc_lp__nor3b_4.spice
index 3a707f4..f9f2886 100644
--- a/cells/nor3b/sky130_fd_sc_lp__nor3b_4.spice
+++ b/cells/nor3b/sky130_fd_sc_lp__nor3b_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__nor3b_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__nor3b_4 A B C_N VGND VNB VPB VPWR Y
 M1000 a_576_367# B a_211_367# VPB phighvt w=1.26e+06u l=150000u
@@ -54,4 +69,3 @@
 M1025 VGND A Y VNB nshort w=840000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/nor3b/sky130_fd_sc_lp__nor3b_lp.spice b/cells/nor3b/sky130_fd_sc_lp__nor3b_lp.spice
index db182a5..cbfa08c 100644
--- a/cells/nor3b/sky130_fd_sc_lp__nor3b_lp.spice
+++ b/cells/nor3b/sky130_fd_sc_lp__nor3b_lp.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__nor3b_lp.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__nor3b_lp A B C_N VGND VNB VPB VPWR Y
 M1000 Y a_350_269# a_286_409# VPB phighvt w=1e+06u l=250000u
@@ -26,4 +41,3 @@
 M1011 VGND A a_136_57# VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/nor3b/sky130_fd_sc_lp__nor3b_m.spice b/cells/nor3b/sky130_fd_sc_lp__nor3b_m.spice
index 0a10bdf..bb4ab2e 100644
--- a/cells/nor3b/sky130_fd_sc_lp__nor3b_m.spice
+++ b/cells/nor3b/sky130_fd_sc_lp__nor3b_m.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__nor3b_m.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__nor3b_m A B C_N VGND VNB VPB VPWR Y
 M1000 a_218_439# A VPWR VPB phighvt w=420000u l=150000u
@@ -18,4 +33,3 @@
 M1007 Y a_27_439# a_290_439# VPB phighvt w=420000u l=150000u
 +  ad=1.113e+11p pd=1.37e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/nor4/sky130_fd_sc_lp__nor4_0.spice b/cells/nor4/sky130_fd_sc_lp__nor4_0.spice
index f2418f5..4405f0c 100644
--- a/cells/nor4/sky130_fd_sc_lp__nor4_0.spice
+++ b/cells/nor4/sky130_fd_sc_lp__nor4_0.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__nor4_0.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__nor4_0 A B C D VGND VNB VPB VPWR Y
 M1000 a_330_483# C a_252_483# VPB phighvt w=640000u l=150000u
@@ -18,4 +33,3 @@
 M1007 VGND B Y VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/nor4/sky130_fd_sc_lp__nor4_1.spice b/cells/nor4/sky130_fd_sc_lp__nor4_1.spice
index f73c8c1..5fe3b77 100644
--- a/cells/nor4/sky130_fd_sc_lp__nor4_1.spice
+++ b/cells/nor4/sky130_fd_sc_lp__nor4_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__nor4_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__nor4_1 A B C D VGND VNB VPB VPWR Y
 M1000 VGND D Y VNB nshort w=840000u l=150000u
@@ -18,4 +33,3 @@
 M1007 a_110_367# A VPWR VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=3.339e+11p ps=3.05e+06u
 .ends
-
diff --git a/cells/nor4/sky130_fd_sc_lp__nor4_2.spice b/cells/nor4/sky130_fd_sc_lp__nor4_2.spice
index 88fbb50..5044e32 100644
--- a/cells/nor4/sky130_fd_sc_lp__nor4_2.spice
+++ b/cells/nor4/sky130_fd_sc_lp__nor4_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__nor4_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__nor4_2 A B C D VGND VNB VPB VPWR Y
 M1000 VPWR A a_157_367# VPB phighvt w=1.26e+06u l=150000u
@@ -34,4 +49,3 @@
 M1015 a_74_367# B a_157_367# VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/nor4/sky130_fd_sc_lp__nor4_4.spice b/cells/nor4/sky130_fd_sc_lp__nor4_4.spice
index 79598ed..da1efb3 100644
--- a/cells/nor4/sky130_fd_sc_lp__nor4_4.spice
+++ b/cells/nor4/sky130_fd_sc_lp__nor4_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__nor4_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__nor4_4 A B C D VGND VNB VPB VPWR Y
 M1000 Y D a_864_367# VPB phighvt w=1.26e+06u l=150000u
@@ -66,4 +81,3 @@
 M1031 a_499_367# B a_72_367# VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/nor4/sky130_fd_sc_lp__nor4_lp.spice b/cells/nor4/sky130_fd_sc_lp__nor4_lp.spice
index d90bd69..8cddd23 100644
--- a/cells/nor4/sky130_fd_sc_lp__nor4_lp.spice
+++ b/cells/nor4/sky130_fd_sc_lp__nor4_lp.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__nor4_lp.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__nor4_lp A B C D VGND VNB VPB VPWR Y
 M1000 a_27_409# D Y VPB phighvt w=1e+06u l=250000u
@@ -26,4 +41,3 @@
 M1011 VPWR A a_570_409# VPB phighvt w=1e+06u l=250000u
 +  ad=2.85e+11p pd=2.57e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/nor4/sky130_fd_sc_lp__nor4_m.spice b/cells/nor4/sky130_fd_sc_lp__nor4_m.spice
index 2ed6615..35e40ce 100644
--- a/cells/nor4/sky130_fd_sc_lp__nor4_m.spice
+++ b/cells/nor4/sky130_fd_sc_lp__nor4_m.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__nor4_m.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__nor4_m A B C D VGND VNB VPB VPWR Y
 M1000 a_330_483# C a_252_483# VPB phighvt w=420000u l=150000u
@@ -18,4 +33,3 @@
 M1007 VGND D Y VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/nor4b/sky130_fd_sc_lp__nor4b_1.spice b/cells/nor4b/sky130_fd_sc_lp__nor4b_1.spice
index e565fc1..4702eb1 100644
--- a/cells/nor4b/sky130_fd_sc_lp__nor4b_1.spice
+++ b/cells/nor4b/sky130_fd_sc_lp__nor4b_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__nor4b_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__nor4b_1 A B C D_N VGND VNB VPB VPWR Y
 M1000 Y a_80_131# a_451_367# VPB phighvt w=1.26e+06u l=150000u
@@ -22,4 +37,3 @@
 M1009 VPWR D_N a_80_131# VPB phighvt w=420000u l=150000u
 +  ad=0p pd=0u as=1.113e+11p ps=1.37e+06u
 .ends
-
diff --git a/cells/nor4b/sky130_fd_sc_lp__nor4b_2.spice b/cells/nor4b/sky130_fd_sc_lp__nor4b_2.spice
index 53dc6b1..ad20b25 100644
--- a/cells/nor4b/sky130_fd_sc_lp__nor4b_2.spice
+++ b/cells/nor4b/sky130_fd_sc_lp__nor4b_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__nor4b_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__nor4b_2 A B C D_N VGND VNB VPB VPWR Y
 M1000 Y B VGND VNB nshort w=840000u l=150000u
@@ -38,4 +53,3 @@
 M1017 a_312_367# C a_229_367# VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/nor4b/sky130_fd_sc_lp__nor4b_4.spice b/cells/nor4b/sky130_fd_sc_lp__nor4b_4.spice
index 6e7c22c..2d17a83 100644
--- a/cells/nor4b/sky130_fd_sc_lp__nor4b_4.spice
+++ b/cells/nor4b/sky130_fd_sc_lp__nor4b_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__nor4b_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__nor4b_4 A B C D_N VGND VNB VPB VPWR Y
 M1000 Y B VGND VNB nshort w=840000u l=150000u
@@ -70,4 +85,3 @@
 M1033 VPWR D_N a_27_367# VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=3.339e+11p ps=3.05e+06u
 .ends
-
diff --git a/cells/nor4b/sky130_fd_sc_lp__nor4b_lp.spice b/cells/nor4b/sky130_fd_sc_lp__nor4b_lp.spice
index ac5f400..7759e81 100644
--- a/cells/nor4b/sky130_fd_sc_lp__nor4b_lp.spice
+++ b/cells/nor4b/sky130_fd_sc_lp__nor4b_lp.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__nor4b_lp.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__nor4b_lp A B C D_N VGND VNB VPB VPWR Y
 M1000 a_641_57# B VGND VNB nshort w=420000u l=150000u
@@ -32,4 +47,3 @@
 M1014 a_635_409# C a_537_409# VPB phighvt w=1e+06u l=250000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/nor4b/sky130_fd_sc_lp__nor4b_m.spice b/cells/nor4b/sky130_fd_sc_lp__nor4b_m.spice
index ceaeaa8..2ea26aa 100644
--- a/cells/nor4b/sky130_fd_sc_lp__nor4b_m.spice
+++ b/cells/nor4b/sky130_fd_sc_lp__nor4b_m.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__nor4b_m.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__nor4b_m A B C D_N VGND VNB VPB VPWR Y
 M1000 Y A VGND VNB nshort w=420000u l=150000u
@@ -22,4 +37,3 @@
 M1009 Y C VGND VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/nor4bb/sky130_fd_sc_lp__nor4bb_1.spice b/cells/nor4bb/sky130_fd_sc_lp__nor4bb_1.spice
index fa4963d..8d1a2c1 100644
--- a/cells/nor4bb/sky130_fd_sc_lp__nor4bb_1.spice
+++ b/cells/nor4bb/sky130_fd_sc_lp__nor4bb_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__nor4bb_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__nor4bb_1 A B C_N D_N VGND VNB VPB VPWR Y
 M1000 VGND A Y VNB nshort w=840000u l=150000u
@@ -26,4 +41,3 @@
 M1011 a_405_367# a_375_269# a_333_367# VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/nor4bb/sky130_fd_sc_lp__nor4bb_2.spice b/cells/nor4bb/sky130_fd_sc_lp__nor4bb_2.spice
index d4f5521..77eb41b 100644
--- a/cells/nor4bb/sky130_fd_sc_lp__nor4bb_2.spice
+++ b/cells/nor4bb/sky130_fd_sc_lp__nor4bb_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__nor4bb_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__nor4bb_2 A B C_N D_N VGND VNB VPB VPWR Y
 M1000 Y a_45_164# VGND VNB nshort w=840000u l=150000u
@@ -42,4 +57,3 @@
 M1019 a_919_367# B a_718_355# VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/nor4bb/sky130_fd_sc_lp__nor4bb_4.spice b/cells/nor4bb/sky130_fd_sc_lp__nor4bb_4.spice
index a025dec..b04b329 100644
--- a/cells/nor4bb/sky130_fd_sc_lp__nor4bb_4.spice
+++ b/cells/nor4bb/sky130_fd_sc_lp__nor4bb_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__nor4bb_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__nor4bb_4 A B C_N D_N VGND VNB VPB VPWR Y
 M1000 Y a_206_51# VGND VNB nshort w=840000u l=150000u
@@ -74,4 +89,3 @@
 M1035 VGND B Y VNB nshort w=840000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/nor4bb/sky130_fd_sc_lp__nor4bb_lp.spice b/cells/nor4bb/sky130_fd_sc_lp__nor4bb_lp.spice
index f2c73e0..e26311f 100644
--- a/cells/nor4bb/sky130_fd_sc_lp__nor4bb_lp.spice
+++ b/cells/nor4bb/sky130_fd_sc_lp__nor4bb_lp.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__nor4bb_lp.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__nor4bb_lp A B C_N D_N VGND VNB VPB VPWR Y
 M1000 a_245_409# a_430_21# Y VPB phighvt w=1e+06u l=250000u
@@ -38,4 +53,3 @@
 M1017 a_430_21# D_N a_980_47# VNB nshort w=420000u l=150000u
 +  ad=1.197e+11p pd=1.41e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/nor4bb/sky130_fd_sc_lp__nor4bb_m.spice b/cells/nor4bb/sky130_fd_sc_lp__nor4bb_m.spice
index 661436b..9681b61 100644
--- a/cells/nor4bb/sky130_fd_sc_lp__nor4bb_m.spice
+++ b/cells/nor4bb/sky130_fd_sc_lp__nor4bb_m.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__nor4bb_m.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__nor4bb_m A B C_N D_N VGND VNB VPB VPWR Y
 M1000 VGND A Y VNB nshort w=420000u l=150000u
@@ -26,4 +41,3 @@
 M1011 Y B VGND VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o2111a/sky130_fd_sc_lp__o2111a_0.spice b/cells/o2111a/sky130_fd_sc_lp__o2111a_0.spice
index 1d4f149..97a8139 100644
--- a/cells/o2111a/sky130_fd_sc_lp__o2111a_0.spice
+++ b/cells/o2111a/sky130_fd_sc_lp__o2111a_0.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__o2111a_0.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__o2111a_0 A1 A2 B1 C1 D1 VGND VNB VPB VPWR X
 M1000 VPWR C1 a_80_21# VPB phighvt w=640000u l=150000u
@@ -26,4 +41,3 @@
 M1011 a_80_21# B1 VPWR VPB phighvt w=640000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o2111a/sky130_fd_sc_lp__o2111a_1.spice b/cells/o2111a/sky130_fd_sc_lp__o2111a_1.spice
index 23e0c0f..bac995b 100644
--- a/cells/o2111a/sky130_fd_sc_lp__o2111a_1.spice
+++ b/cells/o2111a/sky130_fd_sc_lp__o2111a_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__o2111a_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__o2111a_1 A1 A2 B1 C1 D1 VGND VNB VPB VPWR X
 M1000 VGND A2 a_517_49# VNB nshort w=840000u l=150000u
@@ -26,4 +41,3 @@
 M1011 VPWR a_80_21# X VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=3.339e+11p ps=3.05e+06u
 .ends
-
diff --git a/cells/o2111a/sky130_fd_sc_lp__o2111a_2.spice b/cells/o2111a/sky130_fd_sc_lp__o2111a_2.spice
index 080665b..36d52aa 100644
--- a/cells/o2111a/sky130_fd_sc_lp__o2111a_2.spice
+++ b/cells/o2111a/sky130_fd_sc_lp__o2111a_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__o2111a_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__o2111a_2 A1 A2 B1 C1 D1 VGND VNB VPB VPWR X
 M1000 VPWR A1 a_674_367# VPB phighvt w=1.26e+06u l=150000u
@@ -30,4 +45,3 @@
 M1013 VPWR C1 a_80_21# VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o2111a/sky130_fd_sc_lp__o2111a_4.spice b/cells/o2111a/sky130_fd_sc_lp__o2111a_4.spice
index 0473dc0..06a6406 100644
--- a/cells/o2111a/sky130_fd_sc_lp__o2111a_4.spice
+++ b/cells/o2111a/sky130_fd_sc_lp__o2111a_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__o2111a_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__o2111a_4 A1 A2 B1 C1 D1 VGND VNB VPB VPWR X
 M1000 VGND A1 a_389_65# VNB nshort w=840000u l=150000u
@@ -58,4 +73,3 @@
 M1027 a_32_65# C1 a_289_65# VNB nshort w=840000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o2111a/sky130_fd_sc_lp__o2111a_lp.spice b/cells/o2111a/sky130_fd_sc_lp__o2111a_lp.spice
index 6a53d65..4b47e00 100644
--- a/cells/o2111a/sky130_fd_sc_lp__o2111a_lp.spice
+++ b/cells/o2111a/sky130_fd_sc_lp__o2111a_lp.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__o2111a_lp.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__o2111a_lp A1 A2 B1 C1 D1 VGND VNB VPB VPWR X
 M1000 a_232_419# A2 a_134_419# VPB phighvt w=1e+06u l=250000u
@@ -28,4 +43,3 @@
 M1012 VGND A1 a_29_51# VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o2111a/sky130_fd_sc_lp__o2111a_m.spice b/cells/o2111a/sky130_fd_sc_lp__o2111a_m.spice
index cf8e91e..628afec 100644
--- a/cells/o2111a/sky130_fd_sc_lp__o2111a_m.spice
+++ b/cells/o2111a/sky130_fd_sc_lp__o2111a_m.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__o2111a_m.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__o2111a_m A1 A2 B1 C1 D1 VGND VNB VPB VPWR X
 M1000 a_348_47# D1 a_80_21# VNB nshort w=420000u l=150000u
@@ -26,4 +41,3 @@
 M1011 a_80_21# D1 VPWR VPB phighvt w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o2111ai/sky130_fd_sc_lp__o2111ai_0.spice b/cells/o2111ai/sky130_fd_sc_lp__o2111ai_0.spice
index eb85f48..f53eda1 100644
--- a/cells/o2111ai/sky130_fd_sc_lp__o2111ai_0.spice
+++ b/cells/o2111ai/sky130_fd_sc_lp__o2111ai_0.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__o2111ai_0.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__o2111ai_0 A1 A2 B1 C1 D1 VGND VNB VPB VPWR Y
 M1000 VPWR C1 Y VPB phighvt w=640000u l=150000u
@@ -22,4 +37,3 @@
 M1009 a_339_47# B1 a_267_47# VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o2111ai/sky130_fd_sc_lp__o2111ai_1.spice b/cells/o2111ai/sky130_fd_sc_lp__o2111ai_1.spice
index 25a41de..ce55d9e 100644
--- a/cells/o2111ai/sky130_fd_sc_lp__o2111ai_1.spice
+++ b/cells/o2111ai/sky130_fd_sc_lp__o2111ai_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__o2111ai_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__o2111ai_1 A1 A2 B1 C1 D1 VGND VNB VPB VPWR Y
 M1000 a_513_367# A2 Y VPB phighvt w=1.26e+06u l=150000u
@@ -22,4 +37,3 @@
 M1009 Y D1 VPWR VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o2111ai/sky130_fd_sc_lp__o2111ai_2.spice b/cells/o2111ai/sky130_fd_sc_lp__o2111ai_2.spice
index ba7c503..dc574c7 100644
--- a/cells/o2111ai/sky130_fd_sc_lp__o2111ai_2.spice
+++ b/cells/o2111ai/sky130_fd_sc_lp__o2111ai_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__o2111ai_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__o2111ai_2 A1 A2 B1 C1 D1 VGND VNB VPB VPWR Y
 M1000 VPWR C1 Y VPB phighvt w=1.26e+06u l=150000u
@@ -42,4 +57,3 @@
 M1019 VPWR A1 a_694_367# VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o2111ai/sky130_fd_sc_lp__o2111ai_4.spice b/cells/o2111ai/sky130_fd_sc_lp__o2111ai_4.spice
index f3c6c8e..9b988ce 100644
--- a/cells/o2111ai/sky130_fd_sc_lp__o2111ai_4.spice
+++ b/cells/o2111ai/sky130_fd_sc_lp__o2111ai_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__o2111ai_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__o2111ai_4 A1 A2 B1 C1 D1 VGND VNB VPB VPWR Y
 M1000 VPWR D1 Y VPB phighvt w=1.26e+06u l=150000u
@@ -82,4 +97,3 @@
 M1039 VGND A1 a_819_47# VNB nshort w=840000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o2111ai/sky130_fd_sc_lp__o2111ai_lp.spice b/cells/o2111ai/sky130_fd_sc_lp__o2111ai_lp.spice
index f3b2575..048c88f 100644
--- a/cells/o2111ai/sky130_fd_sc_lp__o2111ai_lp.spice
+++ b/cells/o2111ai/sky130_fd_sc_lp__o2111ai_lp.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__o2111ai_lp.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__o2111ai_lp A1 A2 B1 C1 D1 VGND VNB VPB VPWR Y
 M1000 a_483_409# A2 Y VPB phighvt w=1e+06u l=250000u
@@ -22,4 +37,3 @@
 M1009 VGND A2 a_347_57# VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o2111ai/sky130_fd_sc_lp__o2111ai_m.spice b/cells/o2111ai/sky130_fd_sc_lp__o2111ai_m.spice
index a08c5fc..58d3b08 100644
--- a/cells/o2111ai/sky130_fd_sc_lp__o2111ai_m.spice
+++ b/cells/o2111ai/sky130_fd_sc_lp__o2111ai_m.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__o2111ai_m.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__o2111ai_m A1 A2 B1 C1 D1 VGND VNB VPB VPWR Y
 M1000 a_357_50# A1 VGND VNB nshort w=420000u l=150000u
@@ -22,4 +37,3 @@
 M1009 VPWR C1 Y VPB phighvt w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o211a/sky130_fd_sc_lp__o211a_0.spice b/cells/o211a/sky130_fd_sc_lp__o211a_0.spice
index 54eaa79..dd93157 100644
--- a/cells/o211a/sky130_fd_sc_lp__o211a_0.spice
+++ b/cells/o211a/sky130_fd_sc_lp__o211a_0.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__o211a_0.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__o211a_0 A1 A2 B1 C1 VGND VNB VPB VPWR X
 M1000 a_80_21# A2 a_340_485# VPB phighvt w=640000u l=150000u
@@ -22,4 +37,3 @@
 M1009 VPWR B1 a_80_21# VPB phighvt w=640000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o211a/sky130_fd_sc_lp__o211a_1.spice b/cells/o211a/sky130_fd_sc_lp__o211a_1.spice
index b552d18..e94888b 100644
--- a/cells/o211a/sky130_fd_sc_lp__o211a_1.spice
+++ b/cells/o211a/sky130_fd_sc_lp__o211a_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__o211a_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__o211a_1 A1 A2 B1 C1 VGND VNB VPB VPWR X
 M1000 a_365_367# A1 VPWR VPB phighvt w=1.26e+06u l=150000u
@@ -22,4 +37,3 @@
 M1009 a_80_237# C1 a_581_49# VNB nshort w=840000u l=150000u
 +  ad=2.226e+11p pd=2.21e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/o211a/sky130_fd_sc_lp__o211a_2.spice b/cells/o211a/sky130_fd_sc_lp__o211a_2.spice
index a29a3c3..cddf9c6 100644
--- a/cells/o211a/sky130_fd_sc_lp__o211a_2.spice
+++ b/cells/o211a/sky130_fd_sc_lp__o211a_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__o211a_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__o211a_2 A1 A2 B1 C1 VGND VNB VPB VPWR X
 M1000 a_182_47# B1 a_110_47# VNB nshort w=840000u l=150000u
@@ -26,4 +41,3 @@
 M1011 VGND A1 a_182_47# VNB nshort w=840000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o211a/sky130_fd_sc_lp__o211a_4.spice b/cells/o211a/sky130_fd_sc_lp__o211a_4.spice
index 11a61aa..3940d29 100644
--- a/cells/o211a/sky130_fd_sc_lp__o211a_4.spice
+++ b/cells/o211a/sky130_fd_sc_lp__o211a_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__o211a_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__o211a_4 A1 A2 B1 C1 VGND VNB VPB VPWR X
 M1000 a_986_367# A1 VPWR VPB phighvt w=1.26e+06u l=150000u
@@ -50,4 +65,3 @@
 M1023 X a_80_21# VGND VNB nshort w=840000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o211a/sky130_fd_sc_lp__o211a_lp.spice b/cells/o211a/sky130_fd_sc_lp__o211a_lp.spice
index 40897c9..8a1d8e6 100644
--- a/cells/o211a/sky130_fd_sc_lp__o211a_lp.spice
+++ b/cells/o211a/sky130_fd_sc_lp__o211a_lp.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__o211a_lp.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__o211a_lp A1 A2 B1 C1 VGND VNB VPB VPWR X
 M1000 a_606_47# a_232_419# VGND VNB nshort w=420000u l=150000u
@@ -24,4 +39,3 @@
 M1010 VGND A1 a_27_144# VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o211a/sky130_fd_sc_lp__o211a_m.spice b/cells/o211a/sky130_fd_sc_lp__o211a_m.spice
index 7e32063..85ee2a3 100644
--- a/cells/o211a/sky130_fd_sc_lp__o211a_m.spice
+++ b/cells/o211a/sky130_fd_sc_lp__o211a_m.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__o211a_m.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__o211a_m A1 A2 B1 C1 VGND VNB VPB VPWR X
 M1000 VGND A1 a_217_49# VNB nshort w=420000u l=150000u
@@ -22,4 +37,3 @@
 M1009 a_80_60# A2 a_300_371# VPB phighvt w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o211ai/sky130_fd_sc_lp__o211ai_0.spice b/cells/o211ai/sky130_fd_sc_lp__o211ai_0.spice
index 3b43b13..93194d7 100644
--- a/cells/o211ai/sky130_fd_sc_lp__o211ai_0.spice
+++ b/cells/o211ai/sky130_fd_sc_lp__o211ai_0.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__o211ai_0.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__o211ai_0 A1 A2 B1 C1 VGND VNB VPB VPWR Y
 M1000 Y A2 a_131_465# VPB phighvt w=640000u l=150000u
@@ -18,4 +33,3 @@
 M1007 a_36_47# A2 VGND VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o211ai/sky130_fd_sc_lp__o211ai_1.spice b/cells/o211ai/sky130_fd_sc_lp__o211ai_1.spice
index f3664d8..de01c1b 100644
--- a/cells/o211ai/sky130_fd_sc_lp__o211ai_1.spice
+++ b/cells/o211ai/sky130_fd_sc_lp__o211ai_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__o211ai_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__o211ai_1 A1 A2 B1 C1 VGND VNB VPB VPWR Y
 M1000 VPWR B1 Y VPB phighvt w=1.26e+06u l=150000u
@@ -18,4 +33,3 @@
 M1007 a_110_367# A1 VPWR VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o211ai/sky130_fd_sc_lp__o211ai_2.spice b/cells/o211ai/sky130_fd_sc_lp__o211ai_2.spice
index 248a835..7fbaea1 100644
--- a/cells/o211ai/sky130_fd_sc_lp__o211ai_2.spice
+++ b/cells/o211ai/sky130_fd_sc_lp__o211ai_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__o211ai_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__o211ai_2 A1 A2 B1 C1 VGND VNB VPB VPWR Y
 M1000 VGND A1 a_286_65# VNB nshort w=840000u l=150000u
@@ -34,4 +49,3 @@
 M1015 VPWR C1 Y VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o211ai/sky130_fd_sc_lp__o211ai_4.spice b/cells/o211ai/sky130_fd_sc_lp__o211ai_4.spice
index a8c2253..17fff0d 100644
--- a/cells/o211ai/sky130_fd_sc_lp__o211ai_4.spice
+++ b/cells/o211ai/sky130_fd_sc_lp__o211ai_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__o211ai_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__o211ai_4 A1 A2 B1 C1 VGND VNB VPB VPWR Y
 M1000 Y B1 VPWR VPB phighvt w=1.26e+06u l=150000u
@@ -66,4 +81,3 @@
 M1031 a_140_367# A1 VPWR VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o211ai/sky130_fd_sc_lp__o211ai_lp.spice b/cells/o211ai/sky130_fd_sc_lp__o211ai_lp.spice
index e9147eb..477f722 100644
--- a/cells/o211ai/sky130_fd_sc_lp__o211ai_lp.spice
+++ b/cells/o211ai/sky130_fd_sc_lp__o211ai_lp.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__o211ai_lp.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__o211ai_lp A1 A2 B1 C1 VGND VNB VPB VPWR Y
 M1000 Y C1 VPWR VPB phighvt w=1e+06u l=250000u
@@ -18,4 +33,3 @@
 M1007 a_137_409# A1 VPWR VPB phighvt w=1e+06u l=250000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o211ai/sky130_fd_sc_lp__o211ai_m.spice b/cells/o211ai/sky130_fd_sc_lp__o211ai_m.spice
index 154cee9..e67ac29 100644
--- a/cells/o211ai/sky130_fd_sc_lp__o211ai_m.spice
+++ b/cells/o211ai/sky130_fd_sc_lp__o211ai_m.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__o211ai_m.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__o211ai_m A1 A2 B1 C1 VGND VNB VPB VPWR Y
 M1000 a_148_535# A1 VPWR VPB phighvt w=420000u l=150000u
@@ -18,4 +33,3 @@
 M1007 VGND A1 a_29_47# VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o21a/sky130_fd_sc_lp__o21a_0.spice b/cells/o21a/sky130_fd_sc_lp__o21a_0.spice
index 3adbf7f..a288795 100644
--- a/cells/o21a/sky130_fd_sc_lp__o21a_0.spice
+++ b/cells/o21a/sky130_fd_sc_lp__o21a_0.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__o21a_0.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__o21a_0 A1 A2 B1 VGND VNB VPB VPWR X
 M1000 VPWR A1 a_337_483# VPB phighvt w=640000u l=150000u
@@ -18,4 +33,3 @@
 M1007 VGND A2 a_300_58# VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o21a/sky130_fd_sc_lp__o21a_1.spice b/cells/o21a/sky130_fd_sc_lp__o21a_1.spice
index 60bafed..afbee24 100644
--- a/cells/o21a/sky130_fd_sc_lp__o21a_1.spice
+++ b/cells/o21a/sky130_fd_sc_lp__o21a_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__o21a_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__o21a_1 A1 A2 B1 VGND VNB VPB VPWR X
 M1000 VGND A2 a_300_51# VNB nshort w=840000u l=150000u
@@ -18,4 +33,3 @@
 M1007 a_80_21# B1 VPWR VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o21a/sky130_fd_sc_lp__o21a_2.spice b/cells/o21a/sky130_fd_sc_lp__o21a_2.spice
index 7c7dd24..c47fb75 100644
--- a/cells/o21a/sky130_fd_sc_lp__o21a_2.spice
+++ b/cells/o21a/sky130_fd_sc_lp__o21a_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__o21a_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__o21a_2 A1 A2 B1 VGND VNB VPB VPWR X
 M1000 a_392_51# B1 a_86_21# VNB nshort w=840000u l=150000u
@@ -22,4 +37,3 @@
 M1009 a_478_367# A2 a_86_21# VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o21a/sky130_fd_sc_lp__o21a_4.spice b/cells/o21a/sky130_fd_sc_lp__o21a_4.spice
index 13f50d3..2b61062 100644
--- a/cells/o21a/sky130_fd_sc_lp__o21a_4.spice
+++ b/cells/o21a/sky130_fd_sc_lp__o21a_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__o21a_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__o21a_4 A1 A2 B1 VGND VNB VPB VPWR X
 M1000 a_792_367# A1 VPWR VPB phighvt w=1.26e+06u l=150000u
@@ -42,4 +57,3 @@
 M1019 VGND A1 a_485_65# VNB nshort w=840000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o21a/sky130_fd_sc_lp__o21a_lp.spice b/cells/o21a/sky130_fd_sc_lp__o21a_lp.spice
index c6b206c..9adc7cb 100644
--- a/cells/o21a/sky130_fd_sc_lp__o21a_lp.spice
+++ b/cells/o21a/sky130_fd_sc_lp__o21a_lp.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__o21a_lp.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__o21a_lp A1 A2 B1 VGND VNB VPB VPWR X
 M1000 a_146_409# A1 VPWR VPB phighvt w=1e+06u l=250000u
@@ -20,4 +35,3 @@
 M1008 X a_244_409# a_516_47# VNB nshort w=420000u l=150000u
 +  ad=1.197e+11p pd=1.41e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/o21a/sky130_fd_sc_lp__o21a_m.spice b/cells/o21a/sky130_fd_sc_lp__o21a_m.spice
index 31ec393..b342392 100644
--- a/cells/o21a/sky130_fd_sc_lp__o21a_m.spice
+++ b/cells/o21a/sky130_fd_sc_lp__o21a_m.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__o21a_m.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__o21a_m A1 A2 B1 VGND VNB VPB VPWR X
 M1000 VPWR a_80_23# X VPB phighvt w=420000u l=150000u
@@ -18,4 +33,3 @@
 M1007 VPWR A1 a_340_535# VPB phighvt w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o21ai/sky130_fd_sc_lp__o21ai_0.spice b/cells/o21ai/sky130_fd_sc_lp__o21ai_0.spice
index be3fee0..047a503 100644
--- a/cells/o21ai/sky130_fd_sc_lp__o21ai_0.spice
+++ b/cells/o21ai/sky130_fd_sc_lp__o21ai_0.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__o21ai_0.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__o21ai_0 A1 A2 B1 VGND VNB VPB VPWR Y
 M1000 Y B1 a_39_47# VNB nshort w=420000u l=150000u
@@ -14,4 +29,3 @@
 M1005 a_39_47# A2 VGND VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o21ai/sky130_fd_sc_lp__o21ai_1.spice b/cells/o21ai/sky130_fd_sc_lp__o21ai_1.spice
index 2602490..87565be 100644
--- a/cells/o21ai/sky130_fd_sc_lp__o21ai_1.spice
+++ b/cells/o21ai/sky130_fd_sc_lp__o21ai_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__o21ai_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__o21ai_1 A1 A2 B1 VGND VNB VPB VPWR Y
 M1000 a_29_47# A2 VGND VNB nshort w=840000u l=150000u
@@ -14,4 +29,3 @@
 M1005 Y B1 a_29_47# VNB nshort w=840000u l=150000u
 +  ad=2.226e+11p pd=2.21e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/o21ai/sky130_fd_sc_lp__o21ai_2.spice b/cells/o21ai/sky130_fd_sc_lp__o21ai_2.spice
index ea90a78..a377ab6 100644
--- a/cells/o21ai/sky130_fd_sc_lp__o21ai_2.spice
+++ b/cells/o21ai/sky130_fd_sc_lp__o21ai_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__o21ai_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__o21ai_2 A1 A2 B1 VGND VNB VPB VPWR Y
 M1000 Y B1 VPWR VPB phighvt w=1.26e+06u l=150000u
@@ -26,4 +41,3 @@
 M1011 a_113_367# A2 Y VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o21ai/sky130_fd_sc_lp__o21ai_4.spice b/cells/o21ai/sky130_fd_sc_lp__o21ai_4.spice
index f90284a..5508a9f 100644
--- a/cells/o21ai/sky130_fd_sc_lp__o21ai_4.spice
+++ b/cells/o21ai/sky130_fd_sc_lp__o21ai_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__o21ai_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__o21ai_4 A1 A2 B1 VGND VNB VPB VPWR Y
 M1000 Y B1 a_32_47# VNB nshort w=840000u l=150000u
@@ -50,4 +65,3 @@
 M1023 VPWR B1 Y VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o21ai/sky130_fd_sc_lp__o21ai_lp.spice b/cells/o21ai/sky130_fd_sc_lp__o21ai_lp.spice
index 3dd5a59..6f90812 100644
--- a/cells/o21ai/sky130_fd_sc_lp__o21ai_lp.spice
+++ b/cells/o21ai/sky130_fd_sc_lp__o21ai_lp.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__o21ai_lp.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__o21ai_lp A1 A2 B1 VGND VNB VPB VPWR Y
 M1000 a_155_409# A1 VPWR VPB phighvt w=1e+06u l=250000u
@@ -14,4 +29,3 @@
 M1005 Y B1 a_64_57# VNB nshort w=420000u l=150000u
 +  ad=1.533e+11p pd=1.57e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/o21ai/sky130_fd_sc_lp__o21ai_m.spice b/cells/o21ai/sky130_fd_sc_lp__o21ai_m.spice
index a6ae3fe..7c67464 100644
--- a/cells/o21ai/sky130_fd_sc_lp__o21ai_m.spice
+++ b/cells/o21ai/sky130_fd_sc_lp__o21ai_m.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__o21ai_m.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__o21ai_m A1 A2 B1 VGND VNB VPB VPWR Y
 M1000 a_27_51# A2 VGND VNB nshort w=420000u l=150000u
@@ -14,4 +29,3 @@
 M1005 a_110_434# A1 VPWR VPB phighvt w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o21ba/sky130_fd_sc_lp__o21ba_0.spice b/cells/o21ba/sky130_fd_sc_lp__o21ba_0.spice
index f104eb6..f39d291 100644
--- a/cells/o21ba/sky130_fd_sc_lp__o21ba_0.spice
+++ b/cells/o21ba/sky130_fd_sc_lp__o21ba_0.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__o21ba_0.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__o21ba_0 A1 A2 B1_N VGND VNB VPB VPWR X
 M1000 a_499_47# A1 VGND VNB nshort w=420000u l=150000u
@@ -22,4 +37,3 @@
 M1009 VPWR A1 a_557_487# VPB phighvt w=640000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o21ba/sky130_fd_sc_lp__o21ba_1.spice b/cells/o21ba/sky130_fd_sc_lp__o21ba_1.spice
index 19e0f5d..90e52f3 100644
--- a/cells/o21ba/sky130_fd_sc_lp__o21ba_1.spice
+++ b/cells/o21ba/sky130_fd_sc_lp__o21ba_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__o21ba_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__o21ba_1 A1 A2 B1_N VGND VNB VPB VPWR X
 M1000 a_281_138# B1_N VPWR VPB phighvt w=420000u l=150000u
@@ -22,4 +37,3 @@
 M1009 a_494_51# A1 VGND VNB nshort w=840000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o21ba/sky130_fd_sc_lp__o21ba_2.spice b/cells/o21ba/sky130_fd_sc_lp__o21ba_2.spice
index eda3664..c1bad0a 100644
--- a/cells/o21ba/sky130_fd_sc_lp__o21ba_2.spice
+++ b/cells/o21ba/sky130_fd_sc_lp__o21ba_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__o21ba_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__o21ba_2 A1 A2 B1_N VGND VNB VPB VPWR X
 M1000 a_186_21# a_28_131# VPWR VPB phighvt w=1.26e+06u l=150000u
@@ -26,4 +41,3 @@
 M1011 X a_186_21# VPWR VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o21ba/sky130_fd_sc_lp__o21ba_4.spice b/cells/o21ba/sky130_fd_sc_lp__o21ba_4.spice
index 21ccffe..6d2c337 100644
--- a/cells/o21ba/sky130_fd_sc_lp__o21ba_4.spice
+++ b/cells/o21ba/sky130_fd_sc_lp__o21ba_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__o21ba_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__o21ba_4 A1 A2 B1_N VGND VNB VPB VPWR X
 M1000 VPWR a_180_23# X VPB phighvt w=1.26e+06u l=150000u
@@ -46,4 +61,3 @@
 M1021 VPWR B1_N a_37_49# VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=3.339e+11p ps=3.05e+06u
 .ends
-
diff --git a/cells/o21ba/sky130_fd_sc_lp__o21ba_lp.spice b/cells/o21ba/sky130_fd_sc_lp__o21ba_lp.spice
index 7a13f6a..776920b 100644
--- a/cells/o21ba/sky130_fd_sc_lp__o21ba_lp.spice
+++ b/cells/o21ba/sky130_fd_sc_lp__o21ba_lp.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__o21ba_lp.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__o21ba_lp A1 A2 B1_N VGND VNB VPB VPWR X
 M1000 a_317_29# B1_N VPWR VPB phighvt w=1e+06u l=250000u
@@ -26,4 +41,3 @@
 M1011 a_708_75# a_253_389# VGND VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o21ba/sky130_fd_sc_lp__o21ba_m.spice b/cells/o21ba/sky130_fd_sc_lp__o21ba_m.spice
index 239503d..fe98e31 100644
--- a/cells/o21ba/sky130_fd_sc_lp__o21ba_m.spice
+++ b/cells/o21ba/sky130_fd_sc_lp__o21ba_m.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__o21ba_m.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__o21ba_m A1 A2 B1_N VGND VNB VPB VPWR X
 M1000 VPWR a_88_41# X VPB phighvt w=420000u l=150000u
@@ -22,4 +37,3 @@
 M1009 a_88_41# a_256_79# VPWR VPB phighvt w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o21bai/sky130_fd_sc_lp__o21bai_0.spice b/cells/o21bai/sky130_fd_sc_lp__o21bai_0.spice
index 52305e2..aa68a17 100644
--- a/cells/o21bai/sky130_fd_sc_lp__o21bai_0.spice
+++ b/cells/o21bai/sky130_fd_sc_lp__o21bai_0.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__o21bai_0.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__o21bai_0 A1 A2 B1_N VGND VNB VPB VPWR Y
 M1000 VPWR A1 a_406_473# VPB phighvt w=640000u l=150000u
@@ -18,4 +33,3 @@
 M1007 VGND B1_N a_39_51# VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=1.113e+11p ps=1.37e+06u
 .ends
-
diff --git a/cells/o21bai/sky130_fd_sc_lp__o21bai_1.spice b/cells/o21bai/sky130_fd_sc_lp__o21bai_1.spice
index 4e4bbeb..595be36 100644
--- a/cells/o21bai/sky130_fd_sc_lp__o21bai_1.spice
+++ b/cells/o21bai/sky130_fd_sc_lp__o21bai_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__o21bai_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__o21bai_1 A1 A2 B1_N VGND VNB VPB VPWR Y
 M1000 VPWR B1_N a_27_69# VPB phighvt w=420000u l=150000u
@@ -18,4 +33,3 @@
 M1007 a_424_367# A2 Y VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o21bai/sky130_fd_sc_lp__o21bai_2.spice b/cells/o21bai/sky130_fd_sc_lp__o21bai_2.spice
index 6bc776b..aa829a4 100644
--- a/cells/o21bai/sky130_fd_sc_lp__o21bai_2.spice
+++ b/cells/o21bai/sky130_fd_sc_lp__o21bai_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__o21bai_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__o21bai_2 A1 A2 B1_N VGND VNB VPB VPWR Y
 M1000 VGND A2 a_233_65# VNB nshort w=840000u l=150000u
@@ -30,4 +45,3 @@
 M1013 a_100_367# B1_N VGND VNB nshort w=420000u l=150000u
 +  ad=1.113e+11p pd=1.37e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/o21bai/sky130_fd_sc_lp__o21bai_4.spice b/cells/o21bai/sky130_fd_sc_lp__o21bai_4.spice
index 8abb8a3..f6ae4e2 100644
--- a/cells/o21bai/sky130_fd_sc_lp__o21bai_4.spice
+++ b/cells/o21bai/sky130_fd_sc_lp__o21bai_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__o21bai_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__o21bai_4 A1 A2 B1_N VGND VNB VPB VPWR Y
 M1000 a_218_49# A2 VGND VNB nshort w=840000u l=150000u
@@ -54,4 +69,3 @@
 M1025 a_653_367# A2 Y VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o21bai/sky130_fd_sc_lp__o21bai_lp.spice b/cells/o21bai/sky130_fd_sc_lp__o21bai_lp.spice
index c487069..d14d31b 100644
--- a/cells/o21bai/sky130_fd_sc_lp__o21bai_lp.spice
+++ b/cells/o21bai/sky130_fd_sc_lp__o21bai_lp.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__o21bai_lp.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__o21bai_lp A1 A2 B1_N VGND VNB VPB VPWR Y
 M1000 Y A2 a_140_413# VPB phighvt w=1e+06u l=250000u
@@ -20,4 +35,3 @@
 M1008 a_288_21# B1_N a_516_47# VNB nshort w=420000u l=150000u
 +  ad=1.197e+11p pd=1.41e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/o21bai/sky130_fd_sc_lp__o21bai_m.spice b/cells/o21bai/sky130_fd_sc_lp__o21bai_m.spice
index f989895..a0342d1 100644
--- a/cells/o21bai/sky130_fd_sc_lp__o21bai_m.spice
+++ b/cells/o21bai/sky130_fd_sc_lp__o21bai_m.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__o21bai_m.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__o21bai_m A1 A2 B1_N VGND VNB VPB VPWR Y
 M1000 a_320_78# A1 VGND VNB nshort w=420000u l=150000u
@@ -18,4 +33,3 @@
 M1007 Y a_32_62# VPWR VPB phighvt w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o221a/sky130_fd_sc_lp__o221a_0.spice b/cells/o221a/sky130_fd_sc_lp__o221a_0.spice
index 7b56eaf..e23307e 100644
--- a/cells/o221a/sky130_fd_sc_lp__o221a_0.spice
+++ b/cells/o221a/sky130_fd_sc_lp__o221a_0.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__o221a_0.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__o221a_0 A1 A2 B1 B2 C1 VGND VNB VPB VPWR X
 M1000 a_127_106# B2 a_213_106# VNB nshort w=420000u l=150000u
@@ -26,4 +41,3 @@
 M1011 a_449_484# A2 a_32_484# VPB phighvt w=640000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o221a/sky130_fd_sc_lp__o221a_1.spice b/cells/o221a/sky130_fd_sc_lp__o221a_1.spice
index 046b087..d65a288 100644
--- a/cells/o221a/sky130_fd_sc_lp__o221a_1.spice
+++ b/cells/o221a/sky130_fd_sc_lp__o221a_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__o221a_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__o221a_1 A1 A2 B1 B2 C1 VGND VNB VPB VPWR X
 M1000 a_96_49# B2 a_287_367# VPB phighvt w=1.26e+06u l=150000u
@@ -26,4 +41,3 @@
 M1011 VGND A1 a_273_49# VNB nshort w=840000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o221a/sky130_fd_sc_lp__o221a_2.spice b/cells/o221a/sky130_fd_sc_lp__o221a_2.spice
index 624eade..569b118 100644
--- a/cells/o221a/sky130_fd_sc_lp__o221a_2.spice
+++ b/cells/o221a/sky130_fd_sc_lp__o221a_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__o221a_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__o221a_2 A1 A2 B1 B2 C1 VGND VNB VPB VPWR X
 M1000 X a_36_67# VGND VNB nshort w=840000u l=150000u
@@ -30,4 +45,3 @@
 M1013 VPWR a_36_67# X VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o221a/sky130_fd_sc_lp__o221a_4.spice b/cells/o221a/sky130_fd_sc_lp__o221a_4.spice
index 6251036..26a08ff 100644
--- a/cells/o221a/sky130_fd_sc_lp__o221a_4.spice
+++ b/cells/o221a/sky130_fd_sc_lp__o221a_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__o221a_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__o221a_4 A1 A2 B1 B2 C1 VGND VNB VPB VPWR X
 M1000 a_292_367# B1 VPWR VPB phighvt w=1.26e+06u l=150000u
@@ -58,4 +73,3 @@
 M1027 a_112_65# A2 a_726_367# VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o221a/sky130_fd_sc_lp__o221a_lp.spice b/cells/o221a/sky130_fd_sc_lp__o221a_lp.spice
index fee8d63..9465691 100644
--- a/cells/o221a/sky130_fd_sc_lp__o221a_lp.spice
+++ b/cells/o221a/sky130_fd_sc_lp__o221a_lp.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__o221a_lp.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__o221a_lp A1 A2 B1 B2 C1 VGND VNB VPB VPWR X
 M1000 VPWR a_84_21# X VPB phighvt w=1e+06u l=250000u
@@ -28,4 +43,3 @@
 M1012 a_84_21# C1 a_490_141# VNB nshort w=420000u l=150000u
 +  ad=1.113e+11p pd=1.37e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/o221a/sky130_fd_sc_lp__o221a_m.spice b/cells/o221a/sky130_fd_sc_lp__o221a_m.spice
index aa8a47f..8e9be5c 100644
--- a/cells/o221a/sky130_fd_sc_lp__o221a_m.spice
+++ b/cells/o221a/sky130_fd_sc_lp__o221a_m.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__o221a_m.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__o221a_m A1 A2 B1 B2 C1 VGND VNB VPB VPWR X
 M1000 VGND A1 a_196_179# VNB nshort w=420000u l=150000u
@@ -26,4 +41,3 @@
 M1011 a_27_179# B2 a_238_535# VPB phighvt w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o221ai/sky130_fd_sc_lp__o221ai_0.spice b/cells/o221ai/sky130_fd_sc_lp__o221ai_0.spice
index 54d1403..1d54687 100644
--- a/cells/o221ai/sky130_fd_sc_lp__o221ai_0.spice
+++ b/cells/o221ai/sky130_fd_sc_lp__o221ai_0.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__o221ai_0.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__o221ai_0 A1 A2 B1 B2 C1 VGND VNB VPB VPWR Y
 M1000 VPWR A1 a_394_468# VPB phighvt w=640000u l=150000u
@@ -22,4 +37,3 @@
 M1009 VGND A2 a_196_47# VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o221ai/sky130_fd_sc_lp__o221ai_1.spice b/cells/o221ai/sky130_fd_sc_lp__o221ai_1.spice
index e9b9e78..cd3e47c 100644
--- a/cells/o221ai/sky130_fd_sc_lp__o221ai_1.spice
+++ b/cells/o221ai/sky130_fd_sc_lp__o221ai_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__o221ai_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__o221ai_1 A1 A2 B1 B2 C1 VGND VNB VPB VPWR Y
 M1000 VPWR C1 Y VPB phighvt w=1.26e+06u l=150000u
@@ -22,4 +37,3 @@
 M1009 Y B2 a_304_367# VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o221ai/sky130_fd_sc_lp__o221ai_2.spice b/cells/o221ai/sky130_fd_sc_lp__o221ai_2.spice
index d887657..00a0274 100644
--- a/cells/o221ai/sky130_fd_sc_lp__o221ai_2.spice
+++ b/cells/o221ai/sky130_fd_sc_lp__o221ai_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__o221ai_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__o221ai_2 A1 A2 B1 B2 C1 VGND VNB VPB VPWR Y
 M1000 VPWR A1 a_794_367# VPB phighvt w=1.26e+06u l=150000u
@@ -42,4 +57,3 @@
 M1019 Y B2 a_388_367# VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o221ai/sky130_fd_sc_lp__o221ai_4.spice b/cells/o221ai/sky130_fd_sc_lp__o221ai_4.spice
index 4f180e0..601c82a 100644
--- a/cells/o221ai/sky130_fd_sc_lp__o221ai_4.spice
+++ b/cells/o221ai/sky130_fd_sc_lp__o221ai_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__o221ai_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__o221ai_4 A1 A2 B1 B2 C1 VGND VNB VPB VPWR Y
 M1000 Y A2 a_1317_367# VPB phighvt w=1.26e+06u l=150000u
@@ -82,4 +97,3 @@
 M1039 a_509_47# A2 VGND VNB nshort w=840000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o221ai/sky130_fd_sc_lp__o221ai_lp.spice b/cells/o221ai/sky130_fd_sc_lp__o221ai_lp.spice
index dd0deb1..0ae3fe7 100644
--- a/cells/o221ai/sky130_fd_sc_lp__o221ai_lp.spice
+++ b/cells/o221ai/sky130_fd_sc_lp__o221ai_lp.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__o221ai_lp.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__o221ai_lp A1 A2 B1 B2 C1 VGND VNB VPB VPWR Y
 M1000 VGND A2 a_302_55# VNB nshort w=420000u l=150000u
@@ -22,4 +37,3 @@
 M1009 a_302_55# A1 VGND VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o221ai/sky130_fd_sc_lp__o221ai_m.spice b/cells/o221ai/sky130_fd_sc_lp__o221ai_m.spice
index 4043568..4a10e42 100644
--- a/cells/o221ai/sky130_fd_sc_lp__o221ai_m.spice
+++ b/cells/o221ai/sky130_fd_sc_lp__o221ai_m.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__o221ai_m.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__o221ai_m A1 A2 B1 B2 C1 VGND VNB VPB VPWR Y
 M1000 a_148_47# C1 Y VNB nshort w=420000u l=150000u
@@ -22,4 +37,3 @@
 M1009 a_245_480# B1 VPWR VPB phighvt w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o22a/sky130_fd_sc_lp__o22a_0.spice b/cells/o22a/sky130_fd_sc_lp__o22a_0.spice
index 69f5241..7c34ea8 100644
--- a/cells/o22a/sky130_fd_sc_lp__o22a_0.spice
+++ b/cells/o22a/sky130_fd_sc_lp__o22a_0.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__o22a_0.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__o22a_0 A1 A2 B1 B2 VGND VNB VPB VPWR X
 M1000 VGND a_80_313# X VNB nshort w=420000u l=150000u
@@ -22,4 +37,3 @@
 M1009 a_536_489# A2 a_80_313# VPB phighvt w=640000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o22a/sky130_fd_sc_lp__o22a_1.spice b/cells/o22a/sky130_fd_sc_lp__o22a_1.spice
index 494a2a4..be14238 100644
--- a/cells/o22a/sky130_fd_sc_lp__o22a_1.spice
+++ b/cells/o22a/sky130_fd_sc_lp__o22a_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__o22a_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__o22a_1 A1 A2 B1 B2 VGND VNB VPB VPWR X
 M1000 a_80_21# B1 a_265_47# VNB nshort w=840000u l=150000u
@@ -22,4 +37,3 @@
 M1009 a_80_21# B2 a_348_367# VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o22a/sky130_fd_sc_lp__o22a_2.spice b/cells/o22a/sky130_fd_sc_lp__o22a_2.spice
index 5d24573..39ac0bc 100644
--- a/cells/o22a/sky130_fd_sc_lp__o22a_2.spice
+++ b/cells/o22a/sky130_fd_sc_lp__o22a_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__o22a_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__o22a_2 A1 A2 B1 B2 VGND VNB VPB VPWR X
 M1000 X a_80_23# VPWR VPB phighvt w=1.26e+06u l=150000u
@@ -26,4 +41,3 @@
 M1011 a_80_23# B2 a_386_367# VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o22a/sky130_fd_sc_lp__o22a_4.spice b/cells/o22a/sky130_fd_sc_lp__o22a_4.spice
index 1ef260c..3310a35 100644
--- a/cells/o22a/sky130_fd_sc_lp__o22a_4.spice
+++ b/cells/o22a/sky130_fd_sc_lp__o22a_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__o22a_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__o22a_4 A1 A2 B1 B2 VGND VNB VPB VPWR X
 M1000 VGND A1 a_525_47# VNB nshort w=840000u l=150000u
@@ -50,4 +65,3 @@
 M1023 VPWR B1 a_608_367# VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o22a/sky130_fd_sc_lp__o22a_lp.spice b/cells/o22a/sky130_fd_sc_lp__o22a_lp.spice
index 15ab001..8c09fa7 100644
--- a/cells/o22a/sky130_fd_sc_lp__o22a_lp.spice
+++ b/cells/o22a/sky130_fd_sc_lp__o22a_lp.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__o22a_lp.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__o22a_lp A1 A2 B1 B2 VGND VNB VPB VPWR X
 M1000 X a_232_419# a_612_47# VNB nshort w=420000u l=150000u
@@ -24,4 +39,3 @@
 M1010 a_612_47# a_232_419# VGND VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o22a/sky130_fd_sc_lp__o22a_m.spice b/cells/o22a/sky130_fd_sc_lp__o22a_m.spice
index e8d0627..15e2c57 100644
--- a/cells/o22a/sky130_fd_sc_lp__o22a_m.spice
+++ b/cells/o22a/sky130_fd_sc_lp__o22a_m.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__o22a_m.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__o22a_m A1 A2 B1 B2 VGND VNB VPB VPWR X
 M1000 VPWR a_88_187# X VPB phighvt w=420000u l=150000u
@@ -22,4 +37,3 @@
 M1009 a_237_81# B2 a_88_187# VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o22ai/sky130_fd_sc_lp__o22ai_0.spice b/cells/o22ai/sky130_fd_sc_lp__o22ai_0.spice
index 792b7af..25f208f 100644
--- a/cells/o22ai/sky130_fd_sc_lp__o22ai_0.spice
+++ b/cells/o22ai/sky130_fd_sc_lp__o22ai_0.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__o22ai_0.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__o22ai_0 A1 A2 B1 B2 VGND VNB VPB VPWR Y
 M1000 a_307_483# A2 Y VPB phighvt w=640000u l=150000u
@@ -18,4 +33,3 @@
 M1007 a_27_85# B2 Y VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o22ai/sky130_fd_sc_lp__o22ai_1.spice b/cells/o22ai/sky130_fd_sc_lp__o22ai_1.spice
index 6f4cbe6..ea96cb3 100644
--- a/cells/o22ai/sky130_fd_sc_lp__o22ai_1.spice
+++ b/cells/o22ai/sky130_fd_sc_lp__o22ai_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__o22ai_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__o22ai_1 A1 A2 B1 B2 VGND VNB VPB VPWR Y
 M1000 VPWR A1 a_341_367# VPB phighvt w=1.26e+06u l=150000u
@@ -18,4 +33,3 @@
 M1007 a_110_367# B1 VPWR VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o22ai/sky130_fd_sc_lp__o22ai_2.spice b/cells/o22ai/sky130_fd_sc_lp__o22ai_2.spice
index 72d2977..5b9676a 100644
--- a/cells/o22ai/sky130_fd_sc_lp__o22ai_2.spice
+++ b/cells/o22ai/sky130_fd_sc_lp__o22ai_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__o22ai_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__o22ai_2 A1 A2 B1 B2 VGND VNB VPB VPWR Y
 M1000 a_43_367# B2 Y VPB phighvt w=1.26e+06u l=150000u
@@ -34,4 +49,3 @@
 M1015 a_43_65# A2 VGND VNB nshort w=840000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o22ai/sky130_fd_sc_lp__o22ai_4.spice b/cells/o22ai/sky130_fd_sc_lp__o22ai_4.spice
index e84540a..187413b 100644
--- a/cells/o22ai/sky130_fd_sc_lp__o22ai_4.spice
+++ b/cells/o22ai/sky130_fd_sc_lp__o22ai_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__o22ai_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__o22ai_4 A1 A2 B1 B2 VGND VNB VPB VPWR Y
 M1000 a_821_367# B1 VPWR VPB phighvt w=1.26e+06u l=150000u
@@ -66,4 +81,3 @@
 M1031 a_33_47# B2 Y VNB nshort w=840000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o22ai/sky130_fd_sc_lp__o22ai_lp.spice b/cells/o22ai/sky130_fd_sc_lp__o22ai_lp.spice
index b9a9962..e5fd65a 100644
--- a/cells/o22ai/sky130_fd_sc_lp__o22ai_lp.spice
+++ b/cells/o22ai/sky130_fd_sc_lp__o22ai_lp.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__o22ai_lp.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__o22ai_lp A1 A2 B1 B2 VGND VNB VPB VPWR Y
 M1000 Y B2 a_169_419# VPB phighvt w=1e+06u l=250000u
@@ -18,4 +33,3 @@
 M1007 Y B1 a_70_101# VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o22ai/sky130_fd_sc_lp__o22ai_m.spice b/cells/o22ai/sky130_fd_sc_lp__o22ai_m.spice
index 2c53629..f2c541f 100644
--- a/cells/o22ai/sky130_fd_sc_lp__o22ai_m.spice
+++ b/cells/o22ai/sky130_fd_sc_lp__o22ai_m.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__o22ai_m.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__o22ai_m A1 A2 B1 B2 VGND VNB VPB VPWR Y
 M1000 VGND A2 a_85_82# VNB nshort w=420000u l=150000u
@@ -18,4 +33,3 @@
 M1007 a_356_535# A2 Y VPB phighvt w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o2bb2a/sky130_fd_sc_lp__o2bb2a_0.spice b/cells/o2bb2a/sky130_fd_sc_lp__o2bb2a_0.spice
index 096b13a..db62a98 100644
--- a/cells/o2bb2a/sky130_fd_sc_lp__o2bb2a_0.spice
+++ b/cells/o2bb2a/sky130_fd_sc_lp__o2bb2a_0.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__o2bb2a_0.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__o2bb2a_0 A1_N A2_N B1 B2 VGND VNB VPB VPWR X
 M1000 a_512_47# B1 VGND VNB nshort w=420000u l=150000u
@@ -26,4 +41,3 @@
 M1011 a_80_176# a_229_483# VPWR VPB phighvt w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o2bb2a/sky130_fd_sc_lp__o2bb2a_1.spice b/cells/o2bb2a/sky130_fd_sc_lp__o2bb2a_1.spice
index aec971e..8d60639 100644
--- a/cells/o2bb2a/sky130_fd_sc_lp__o2bb2a_1.spice
+++ b/cells/o2bb2a/sky130_fd_sc_lp__o2bb2a_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__o2bb2a_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__o2bb2a_1 A1_N A2_N B1 B2 VGND VNB VPB VPWR X
 M1000 a_506_47# B1 VGND VNB nshort w=420000u l=150000u
@@ -26,4 +41,3 @@
 M1011 VPWR a_80_21# X VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=3.339e+11p ps=3.05e+06u
 .ends
-
diff --git a/cells/o2bb2a/sky130_fd_sc_lp__o2bb2a_2.spice b/cells/o2bb2a/sky130_fd_sc_lp__o2bb2a_2.spice
index 54c0158..d0ebd53 100644
--- a/cells/o2bb2a/sky130_fd_sc_lp__o2bb2a_2.spice
+++ b/cells/o2bb2a/sky130_fd_sc_lp__o2bb2a_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__o2bb2a_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__o2bb2a_2 A1_N A2_N B1 B2 VGND VNB VPB VPWR X
 M1000 a_300_21# A2_N VPWR VPB phighvt w=640000u l=150000u
@@ -30,4 +45,3 @@
 M1013 X a_222_367# VPWR VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o2bb2a/sky130_fd_sc_lp__o2bb2a_4.spice b/cells/o2bb2a/sky130_fd_sc_lp__o2bb2a_4.spice
index fc68a42..2dbea8f 100644
--- a/cells/o2bb2a/sky130_fd_sc_lp__o2bb2a_4.spice
+++ b/cells/o2bb2a/sky130_fd_sc_lp__o2bb2a_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__o2bb2a_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__o2bb2a_4 A1_N A2_N B1 B2 VGND VNB VPB VPWR X
 M1000 VPWR A1_N a_462_21# VPB phighvt w=1.26e+06u l=150000u
@@ -58,4 +73,3 @@
 M1027 X a_218_367# VPWR VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o2bb2a/sky130_fd_sc_lp__o2bb2a_lp.spice b/cells/o2bb2a/sky130_fd_sc_lp__o2bb2a_lp.spice
index 4471924..b75d063 100644
--- a/cells/o2bb2a/sky130_fd_sc_lp__o2bb2a_lp.spice
+++ b/cells/o2bb2a/sky130_fd_sc_lp__o2bb2a_lp.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__o2bb2a_lp.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__o2bb2a_lp A1_N A2_N B1 B2 VGND VNB VPB VPWR X
 M1000 a_86_22# a_298_416# VPWR VPB phighvt w=1e+06u l=250000u
@@ -28,4 +43,3 @@
 M1012 a_604_142# a_298_416# a_86_22# VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=1.449e+11p ps=1.53e+06u
 .ends
-
diff --git a/cells/o2bb2a/sky130_fd_sc_lp__o2bb2a_m.spice b/cells/o2bb2a/sky130_fd_sc_lp__o2bb2a_m.spice
index 558e0a6..ee11f68 100644
--- a/cells/o2bb2a/sky130_fd_sc_lp__o2bb2a_m.spice
+++ b/cells/o2bb2a/sky130_fd_sc_lp__o2bb2a_m.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__o2bb2a_m.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__o2bb2a_m A1_N A2_N B1 B2 VGND VNB VPB VPWR X
 M1000 a_85_187# a_209_535# VPWR VPB phighvt w=420000u l=150000u
@@ -26,4 +41,3 @@
 M1011 a_209_535# A1_N VPWR VPB phighvt w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o2bb2ai/sky130_fd_sc_lp__o2bb2ai_0.spice b/cells/o2bb2ai/sky130_fd_sc_lp__o2bb2ai_0.spice
index 0469572..a8a870c 100644
--- a/cells/o2bb2ai/sky130_fd_sc_lp__o2bb2ai_0.spice
+++ b/cells/o2bb2ai/sky130_fd_sc_lp__o2bb2ai_0.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__o2bb2ai_0.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__o2bb2ai_0 A1_N A2_N B1 B2 VGND VNB VPB VPWR Y
 M1000 a_195_56# A2_N a_117_56# VNB nshort w=420000u l=150000u
@@ -22,4 +37,3 @@
 M1009 a_400_47# a_195_56# Y VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=1.113e+11p ps=1.37e+06u
 .ends
-
diff --git a/cells/o2bb2ai/sky130_fd_sc_lp__o2bb2ai_1.spice b/cells/o2bb2ai/sky130_fd_sc_lp__o2bb2ai_1.spice
index 654a66e..17b9218 100644
--- a/cells/o2bb2ai/sky130_fd_sc_lp__o2bb2ai_1.spice
+++ b/cells/o2bb2ai/sky130_fd_sc_lp__o2bb2ai_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__o2bb2ai_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__o2bb2ai_1 A1_N A2_N B1 B2 VGND VNB VPB VPWR Y
 M1000 VPWR B1 a_504_367# VPB phighvt w=1.26e+06u l=150000u
@@ -22,4 +37,3 @@
 M1009 a_115_367# A2_N a_115_52# VNB nshort w=840000u l=150000u
 +  ad=2.856e+11p pd=2.36e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/o2bb2ai/sky130_fd_sc_lp__o2bb2ai_2.spice b/cells/o2bb2ai/sky130_fd_sc_lp__o2bb2ai_2.spice
index 3fe7d53..844a816 100644
--- a/cells/o2bb2ai/sky130_fd_sc_lp__o2bb2ai_2.spice
+++ b/cells/o2bb2ai/sky130_fd_sc_lp__o2bb2ai_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__o2bb2ai_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__o2bb2ai_2 A1_N A2_N B1 B2 VGND VNB VPB VPWR Y
 M1000 Y a_125_367# a_502_69# VNB nshort w=840000u l=150000u
@@ -42,4 +57,3 @@
 M1019 VPWR a_125_367# Y VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o2bb2ai/sky130_fd_sc_lp__o2bb2ai_4.spice b/cells/o2bb2ai/sky130_fd_sc_lp__o2bb2ai_4.spice
index 50175c8..d22522d 100644
--- a/cells/o2bb2ai/sky130_fd_sc_lp__o2bb2ai_4.spice
+++ b/cells/o2bb2ai/sky130_fd_sc_lp__o2bb2ai_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__o2bb2ai_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__o2bb2ai_4 A1_N A2_N B1 B2 VGND VNB VPB VPWR Y
 M1000 VPWR A1_N a_804_39# VPB phighvt w=1.26e+06u l=150000u
@@ -82,4 +97,3 @@
 M1039 a_35_65# B1 VGND VNB nshort w=840000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o2bb2ai/sky130_fd_sc_lp__o2bb2ai_lp.spice b/cells/o2bb2ai/sky130_fd_sc_lp__o2bb2ai_lp.spice
index 9219955..9a5724a 100644
--- a/cells/o2bb2ai/sky130_fd_sc_lp__o2bb2ai_lp.spice
+++ b/cells/o2bb2ai/sky130_fd_sc_lp__o2bb2ai_lp.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__o2bb2ai_lp.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__o2bb2ai_lp A1_N A2_N B1 B2 VGND VNB VPB VPWR Y
 M1000 a_400_83# B1 VGND VNB nshort w=420000u l=150000u
@@ -22,4 +37,3 @@
 M1009 a_145_419# A2_N a_114_57# VNB nshort w=420000u l=150000u
 +  ad=1.197e+11p pd=1.41e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/o2bb2ai/sky130_fd_sc_lp__o2bb2ai_m.spice b/cells/o2bb2ai/sky130_fd_sc_lp__o2bb2ai_m.spice
index 87c507e..f8faf18 100644
--- a/cells/o2bb2ai/sky130_fd_sc_lp__o2bb2ai_m.spice
+++ b/cells/o2bb2ai/sky130_fd_sc_lp__o2bb2ai_m.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__o2bb2ai_m.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__o2bb2ai_m A1_N A2_N B1 B2 VGND VNB VPB VPWR Y
 M1000 a_110_535# A2_N a_116_81# VNB nshort w=420000u l=150000u
@@ -22,4 +37,3 @@
 M1009 VGND B2 a_410_78# VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o311a/sky130_fd_sc_lp__o311a_0.spice b/cells/o311a/sky130_fd_sc_lp__o311a_0.spice
index 322d1dd..3d267bf 100644
--- a/cells/o311a/sky130_fd_sc_lp__o311a_0.spice
+++ b/cells/o311a/sky130_fd_sc_lp__o311a_0.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__o311a_0.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__o311a_0 A1 A2 A3 B1 C1 VGND VNB VPB VPWR X
 M1000 VPWR a_96_161# X VPB phighvt w=640000u l=150000u
@@ -26,4 +41,3 @@
 M1011 a_292_55# A1 VGND VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o311a/sky130_fd_sc_lp__o311a_1.spice b/cells/o311a/sky130_fd_sc_lp__o311a_1.spice
index 55064cd..430a7ae 100644
--- a/cells/o311a/sky130_fd_sc_lp__o311a_1.spice
+++ b/cells/o311a/sky130_fd_sc_lp__o311a_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__o311a_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__o311a_1 A1 A2 A3 B1 C1 VGND VNB VPB VPWR X
 M1000 a_80_21# A3 a_356_367# VPB phighvt w=1.26e+06u l=150000u
@@ -26,4 +41,3 @@
 M1011 a_267_47# A1 VGND VNB nshort w=840000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o311a/sky130_fd_sc_lp__o311a_2.spice b/cells/o311a/sky130_fd_sc_lp__o311a_2.spice
index a929bf7..7f506a7 100644
--- a/cells/o311a/sky130_fd_sc_lp__o311a_2.spice
+++ b/cells/o311a/sky130_fd_sc_lp__o311a_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__o311a_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__o311a_2 A1 A2 A3 B1 C1 VGND VNB VPB VPWR X
 M1000 a_355_367# A1 VPWR VPB phighvt w=1.26e+06u l=150000u
@@ -30,4 +45,3 @@
 M1013 X a_85_21# VGND VNB nshort w=840000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o311a/sky130_fd_sc_lp__o311a_4.spice b/cells/o311a/sky130_fd_sc_lp__o311a_4.spice
index 52f6dca..e5ac715 100644
--- a/cells/o311a/sky130_fd_sc_lp__o311a_4.spice
+++ b/cells/o311a/sky130_fd_sc_lp__o311a_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__o311a_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__o311a_4 A1 A2 A3 B1 C1 VGND VNB VPB VPWR X
 M1000 X a_81_23# VGND VNB nshort w=840000u l=150000u
@@ -58,4 +73,3 @@
 M1027 a_81_23# C1 VPWR VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o311a/sky130_fd_sc_lp__o311a_lp.spice b/cells/o311a/sky130_fd_sc_lp__o311a_lp.spice
index 4d92a1e..5ade76f 100644
--- a/cells/o311a/sky130_fd_sc_lp__o311a_lp.spice
+++ b/cells/o311a/sky130_fd_sc_lp__o311a_lp.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__o311a_lp.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__o311a_lp A1 A2 A3 B1 C1 VGND VNB VPB VPWR X
 M1000 VPWR B1 a_84_115# VPB phighvt w=1e+06u l=250000u
@@ -28,4 +43,3 @@
 M1012 a_258_419# A1 VPWR VPB phighvt w=1e+06u l=250000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o311a/sky130_fd_sc_lp__o311a_m.spice b/cells/o311a/sky130_fd_sc_lp__o311a_m.spice
index 2d8a3f1..c9ba74b 100644
--- a/cells/o311a/sky130_fd_sc_lp__o311a_m.spice
+++ b/cells/o311a/sky130_fd_sc_lp__o311a_m.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__o311a_m.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__o311a_m A1 A2 A3 B1 C1 VGND VNB VPB VPWR X
 M1000 a_314_397# A2 a_242_397# VPB phighvt w=420000u l=150000u
@@ -26,4 +41,3 @@
 M1011 VGND a_93_153# X VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=1.113e+11p ps=1.37e+06u
 .ends
-
diff --git a/cells/o311ai/sky130_fd_sc_lp__o311ai_0.spice b/cells/o311ai/sky130_fd_sc_lp__o311ai_0.spice
index 8381f36..3a12f94 100644
--- a/cells/o311ai/sky130_fd_sc_lp__o311ai_0.spice
+++ b/cells/o311ai/sky130_fd_sc_lp__o311ai_0.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__o311ai_0.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__o311ai_0 A1 A2 A3 B1 C1 VGND VNB VPB VPWR Y
 M1000 VGND A2 a_193_48# VNB nshort w=420000u l=150000u
@@ -22,4 +37,3 @@
 M1009 a_463_48# B1 a_193_48# VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o311ai/sky130_fd_sc_lp__o311ai_1.spice b/cells/o311ai/sky130_fd_sc_lp__o311ai_1.spice
index ed26180..7d8d24a 100644
--- a/cells/o311ai/sky130_fd_sc_lp__o311ai_1.spice
+++ b/cells/o311ai/sky130_fd_sc_lp__o311ai_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__o311ai_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__o311ai_1 A1 A2 A3 B1 C1 VGND VNB VPB VPWR Y
 M1000 a_173_47# A1 VGND VNB nshort w=840000u l=150000u
@@ -22,4 +37,3 @@
 M1009 a_173_367# A1 VPWR VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o311ai/sky130_fd_sc_lp__o311ai_2.spice b/cells/o311ai/sky130_fd_sc_lp__o311ai_2.spice
index 91de001..615003d 100644
--- a/cells/o311ai/sky130_fd_sc_lp__o311ai_2.spice
+++ b/cells/o311ai/sky130_fd_sc_lp__o311ai_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__o311ai_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__o311ai_2 A1 A2 A3 B1 C1 VGND VNB VPB VPWR Y
 M1000 a_35_47# B1 a_710_47# VNB nshort w=840000u l=150000u
@@ -42,4 +57,3 @@
 M1019 a_35_47# A1 VGND VNB nshort w=840000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o311ai/sky130_fd_sc_lp__o311ai_4.spice b/cells/o311ai/sky130_fd_sc_lp__o311ai_4.spice
index 31a7f9b..dd86083 100644
--- a/cells/o311ai/sky130_fd_sc_lp__o311ai_4.spice
+++ b/cells/o311ai/sky130_fd_sc_lp__o311ai_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__o311ai_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__o311ai_4 A1 A2 A3 B1 C1 VGND VNB VPB VPWR Y
 M1000 a_113_47# A2 VGND VNB nshort w=840000u l=150000u
@@ -82,4 +97,3 @@
 M1039 VGND A2 a_113_47# VNB nshort w=840000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o311ai/sky130_fd_sc_lp__o311ai_lp.spice b/cells/o311ai/sky130_fd_sc_lp__o311ai_lp.spice
index f937390..855e257 100644
--- a/cells/o311ai/sky130_fd_sc_lp__o311ai_lp.spice
+++ b/cells/o311ai/sky130_fd_sc_lp__o311ai_lp.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__o311ai_lp.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__o311ai_lp A1 A2 A3 B1 C1 VGND VNB VPB VPWR Y
 M1000 a_232_419# A2 a_134_419# VPB phighvt w=1e+06u l=250000u
@@ -22,4 +37,3 @@
 M1009 a_134_419# A1 VPWR VPB phighvt w=1e+06u l=250000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o311ai/sky130_fd_sc_lp__o311ai_m.spice b/cells/o311ai/sky130_fd_sc_lp__o311ai_m.spice
index 7c8307b..9384ce0 100644
--- a/cells/o311ai/sky130_fd_sc_lp__o311ai_m.spice
+++ b/cells/o311ai/sky130_fd_sc_lp__o311ai_m.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__o311ai_m.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__o311ai_m A1 A2 A3 B1 C1 VGND VNB VPB VPWR Y
 M1000 VPWR B1 Y VPB phighvt w=420000u l=150000u
@@ -22,4 +37,3 @@
 M1009 VGND A2 a_136_82# VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o31a/sky130_fd_sc_lp__o31a_0.spice b/cells/o31a/sky130_fd_sc_lp__o31a_0.spice
index c26f79c..55eee4b 100644
--- a/cells/o31a/sky130_fd_sc_lp__o31a_0.spice
+++ b/cells/o31a/sky130_fd_sc_lp__o31a_0.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__o31a_0.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__o31a_0 A1 A2 A3 B1 VGND VNB VPB VPWR X
 M1000 a_270_55# A1 VGND VNB nshort w=420000u l=150000u
@@ -22,4 +37,3 @@
 M1009 a_90_309# A3 a_354_481# VPB phighvt w=640000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o31a/sky130_fd_sc_lp__o31a_1.spice b/cells/o31a/sky130_fd_sc_lp__o31a_1.spice
index 34e53c8..fd3dae3 100644
--- a/cells/o31a/sky130_fd_sc_lp__o31a_1.spice
+++ b/cells/o31a/sky130_fd_sc_lp__o31a_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__o31a_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__o31a_1 A1 A2 A3 B1 VGND VNB VPB VPWR X
 M1000 VGND A2 a_275_49# VNB nshort w=840000u l=150000u
@@ -22,4 +37,3 @@
 M1009 a_367_367# A2 a_275_367# VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o31a/sky130_fd_sc_lp__o31a_2.spice b/cells/o31a/sky130_fd_sc_lp__o31a_2.spice
index 5ccedd9..75bcd99 100644
--- a/cells/o31a/sky130_fd_sc_lp__o31a_2.spice
+++ b/cells/o31a/sky130_fd_sc_lp__o31a_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__o31a_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__o31a_2 A1 A2 A3 B1 VGND VNB VPB VPWR X
 M1000 VGND A2 a_355_47# VNB nshort w=840000u l=150000u
@@ -26,4 +41,3 @@
 M1011 X a_85_21# VGND VNB nshort w=840000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o31a/sky130_fd_sc_lp__o31a_4.spice b/cells/o31a/sky130_fd_sc_lp__o31a_4.spice
index fd6d850..4c50d81 100644
--- a/cells/o31a/sky130_fd_sc_lp__o31a_4.spice
+++ b/cells/o31a/sky130_fd_sc_lp__o31a_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__o31a_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__o31a_4 A1 A2 A3 B1 VGND VNB VPB VPWR X
 M1000 VPWR a_101_23# X VPB phighvt w=1.26e+06u l=150000u
@@ -50,4 +65,3 @@
 M1023 a_101_23# A3 a_720_367# VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o31a/sky130_fd_sc_lp__o31a_lp.spice b/cells/o31a/sky130_fd_sc_lp__o31a_lp.spice
index 85ac9a3..a85f64e 100644
--- a/cells/o31a/sky130_fd_sc_lp__o31a_lp.spice
+++ b/cells/o31a/sky130_fd_sc_lp__o31a_lp.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__o31a_lp.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__o31a_lp A1 A2 A3 B1 VGND VNB VPB VPWR X
 M1000 a_516_57# a_37_57# VGND VNB nshort w=420000u l=150000u
@@ -24,4 +39,3 @@
 M1010 a_37_57# B1 VPWR VPB phighvt w=1e+06u l=250000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o31a/sky130_fd_sc_lp__o31a_m.spice b/cells/o31a/sky130_fd_sc_lp__o31a_m.spice
index 79cdbb9..9c06d28 100644
--- a/cells/o31a/sky130_fd_sc_lp__o31a_m.spice
+++ b/cells/o31a/sky130_fd_sc_lp__o31a_m.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__o31a_m.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__o31a_m A1 A2 A3 B1 VGND VNB VPB VPWR X
 M1000 a_239_47# A1 VGND VNB nshort w=420000u l=150000u
@@ -22,4 +37,3 @@
 M1009 a_95_153# A3 a_311_397# VPB phighvt w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o31ai/sky130_fd_sc_lp__o31ai_0.spice b/cells/o31ai/sky130_fd_sc_lp__o31ai_0.spice
index c22e0df..261af3c 100644
--- a/cells/o31ai/sky130_fd_sc_lp__o31ai_0.spice
+++ b/cells/o31ai/sky130_fd_sc_lp__o31ai_0.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__o31ai_0.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__o31ai_0 A1 A2 A3 B1 VGND VNB VPB VPWR Y
 M1000 a_146_483# A1 VPWR VPB phighvt w=640000u l=150000u
@@ -18,4 +33,3 @@
 M1007 VGND A2 a_138_65# VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o31ai/sky130_fd_sc_lp__o31ai_1.spice b/cells/o31ai/sky130_fd_sc_lp__o31ai_1.spice
index 21894af..9cd9654 100644
--- a/cells/o31ai/sky130_fd_sc_lp__o31ai_1.spice
+++ b/cells/o31ai/sky130_fd_sc_lp__o31ai_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__o31ai_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__o31ai_1 A1 A2 A3 B1 VGND VNB VPB VPWR Y
 M1000 VPWR B1 Y VPB phighvt w=1.26e+06u l=150000u
@@ -18,4 +33,3 @@
 M1007 a_110_367# A1 VPWR VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o31ai/sky130_fd_sc_lp__o31ai_2.spice b/cells/o31ai/sky130_fd_sc_lp__o31ai_2.spice
index 719d3b2..1df1b26 100644
--- a/cells/o31ai/sky130_fd_sc_lp__o31ai_2.spice
+++ b/cells/o31ai/sky130_fd_sc_lp__o31ai_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__o31ai_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__o31ai_2 A1 A2 A3 B1 VGND VNB VPB VPWR Y
 M1000 a_58_65# A1 VGND VNB nshort w=840000u l=150000u
@@ -34,4 +49,3 @@
 M1015 a_44_367# A2 a_299_367# VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o31ai/sky130_fd_sc_lp__o31ai_4.spice b/cells/o31ai/sky130_fd_sc_lp__o31ai_4.spice
index 5d7cd79..513454e 100644
--- a/cells/o31ai/sky130_fd_sc_lp__o31ai_4.spice
+++ b/cells/o31ai/sky130_fd_sc_lp__o31ai_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__o31ai_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__o31ai_4 A1 A2 A3 B1 VGND VNB VPB VPWR Y
 M1000 VPWR B1 Y VPB phighvt w=1.26e+06u l=150000u
@@ -66,4 +81,3 @@
 M1031 a_49_367# A2 a_132_367# VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o31ai/sky130_fd_sc_lp__o31ai_lp.spice b/cells/o31ai/sky130_fd_sc_lp__o31ai_lp.spice
index 1e1807b..228968f 100644
--- a/cells/o31ai/sky130_fd_sc_lp__o31ai_lp.spice
+++ b/cells/o31ai/sky130_fd_sc_lp__o31ai_lp.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__o31ai_lp.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__o31ai_lp A1 A2 A3 B1 VGND VNB VPB VPWR Y
 M1000 a_161_57# A1 VGND VNB nshort w=420000u l=150000u
@@ -18,4 +33,3 @@
 M1007 Y B1 a_161_57# VNB nshort w=420000u l=150000u
 +  ad=1.533e+11p pd=1.57e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/o31ai/sky130_fd_sc_lp__o31ai_m.spice b/cells/o31ai/sky130_fd_sc_lp__o31ai_m.spice
index fe30e3b..2d71a30 100644
--- a/cells/o31ai/sky130_fd_sc_lp__o31ai_m.spice
+++ b/cells/o31ai/sky130_fd_sc_lp__o31ai_m.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__o31ai_m.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__o31ai_m A1 A2 A3 B1 VGND VNB VPB VPWR Y
 M1000 a_226_535# A2 a_154_535# VPB phighvt w=420000u l=150000u
@@ -18,4 +33,3 @@
 M1007 a_126_129# A1 VGND VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o32a/sky130_fd_sc_lp__o32a_0.spice b/cells/o32a/sky130_fd_sc_lp__o32a_0.spice
index b3cdb24..c1e74aa 100644
--- a/cells/o32a/sky130_fd_sc_lp__o32a_0.spice
+++ b/cells/o32a/sky130_fd_sc_lp__o32a_0.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__o32a_0.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__o32a_0 A1 A2 A3 B1 B2 VGND VNB VPB VPWR X
 M1000 VGND a_97_309# X VNB nshort w=420000u l=150000u
@@ -26,4 +41,3 @@
 M1011 VPWR a_97_309# X VPB phighvt w=640000u l=150000u
 +  ad=0p pd=0u as=1.696e+11p ps=1.81e+06u
 .ends
-
diff --git a/cells/o32a/sky130_fd_sc_lp__o32a_1.spice b/cells/o32a/sky130_fd_sc_lp__o32a_1.spice
index 03dfb70..db4110b 100644
--- a/cells/o32a/sky130_fd_sc_lp__o32a_1.spice
+++ b/cells/o32a/sky130_fd_sc_lp__o32a_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__o32a_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__o32a_1 A1 A2 A3 B1 B2 VGND VNB VPB VPWR X
 M1000 a_88_269# B2 a_250_69# VNB nshort w=840000u l=150000u
@@ -26,4 +41,3 @@
 M1011 a_250_69# B1 a_88_269# VNB nshort w=840000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o32a/sky130_fd_sc_lp__o32a_2.spice b/cells/o32a/sky130_fd_sc_lp__o32a_2.spice
index 4154528..3a628d1 100644
--- a/cells/o32a/sky130_fd_sc_lp__o32a_2.spice
+++ b/cells/o32a/sky130_fd_sc_lp__o32a_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__o32a_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__o32a_2 A1 A2 A3 B1 B2 VGND VNB VPB VPWR X
 M1000 a_355_367# A1 VPWR VPB phighvt w=1.26e+06u l=150000u
@@ -30,4 +45,3 @@
 M1013 X a_85_21# VGND VNB nshort w=840000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o32a/sky130_fd_sc_lp__o32a_4.spice b/cells/o32a/sky130_fd_sc_lp__o32a_4.spice
index 7108b31..ed42315 100644
--- a/cells/o32a/sky130_fd_sc_lp__o32a_4.spice
+++ b/cells/o32a/sky130_fd_sc_lp__o32a_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__o32a_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__o32a_4 A1 A2 A3 B1 B2 VGND VNB VPB VPWR X
 M1000 X a_547_367# VGND VNB nshort w=840000u l=150000u
@@ -58,4 +73,3 @@
 M1027 VPWR a_547_367# X VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o32a/sky130_fd_sc_lp__o32a_lp.spice b/cells/o32a/sky130_fd_sc_lp__o32a_lp.spice
index 677179d..3cdf308 100644
--- a/cells/o32a/sky130_fd_sc_lp__o32a_lp.spice
+++ b/cells/o32a/sky130_fd_sc_lp__o32a_lp.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__o32a_lp.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__o32a_lp A1 A2 A3 B1 B2 VGND VNB VPB VPWR X
 M1000 a_134_101# B1 a_31_101# VNB nshort w=420000u l=150000u
@@ -28,4 +43,3 @@
 M1012 a_474_419# A2 a_376_419# VPB phighvt w=1e+06u l=250000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o32a/sky130_fd_sc_lp__o32a_m.spice b/cells/o32a/sky130_fd_sc_lp__o32a_m.spice
index 2559b14..c2e795b 100644
--- a/cells/o32a/sky130_fd_sc_lp__o32a_m.spice
+++ b/cells/o32a/sky130_fd_sc_lp__o32a_m.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__o32a_m.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__o32a_m A1 A2 A3 B1 B2 VGND VNB VPB VPWR X
 M1000 a_249_403# A1 VPWR VPB phighvt w=420000u l=150000u
@@ -26,4 +41,3 @@
 M1011 VPWR a_86_55# X VPB phighvt w=420000u l=150000u
 +  ad=0p pd=0u as=1.113e+11p ps=1.37e+06u
 .ends
-
diff --git a/cells/o32ai/sky130_fd_sc_lp__o32ai_0.spice b/cells/o32ai/sky130_fd_sc_lp__o32ai_0.spice
index 62763a2..f4e3568 100644
--- a/cells/o32ai/sky130_fd_sc_lp__o32ai_0.spice
+++ b/cells/o32ai/sky130_fd_sc_lp__o32ai_0.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__o32ai_0.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__o32ai_0 A1 A2 A3 B1 B2 VGND VNB VPB VPWR Y
 M1000 a_33_82# B2 Y VNB nshort w=420000u l=150000u
@@ -22,4 +37,3 @@
 M1009 VPWR A1 a_439_491# VPB phighvt w=640000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o32ai/sky130_fd_sc_lp__o32ai_1.spice b/cells/o32ai/sky130_fd_sc_lp__o32ai_1.spice
index 76083bd..065c0b0 100644
--- a/cells/o32ai/sky130_fd_sc_lp__o32ai_1.spice
+++ b/cells/o32ai/sky130_fd_sc_lp__o32ai_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__o32ai_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__o32ai_1 A1 A2 A3 B1 B2 VGND VNB VPB VPWR Y
 M1000 VPWR A1 a_489_367# VPB phighvt w=1.26e+06u l=150000u
@@ -22,4 +37,3 @@
 M1009 Y B1 a_76_69# VNB nshort w=840000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o32ai/sky130_fd_sc_lp__o32ai_2.spice b/cells/o32ai/sky130_fd_sc_lp__o32ai_2.spice
index a57bc8c..f726f7d 100644
--- a/cells/o32ai/sky130_fd_sc_lp__o32ai_2.spice
+++ b/cells/o32ai/sky130_fd_sc_lp__o32ai_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__o32ai_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__o32ai_2 A1 A2 A3 B1 B2 VGND VNB VPB VPWR Y
 M1000 VPWR A1 a_778_365# VPB phighvt w=1.26e+06u l=150000u
@@ -42,4 +57,3 @@
 M1019 Y B2 a_39_65# VNB nshort w=840000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o32ai/sky130_fd_sc_lp__o32ai_4.spice b/cells/o32ai/sky130_fd_sc_lp__o32ai_4.spice
index ac31f5d..4b5635b 100644
--- a/cells/o32ai/sky130_fd_sc_lp__o32ai_4.spice
+++ b/cells/o32ai/sky130_fd_sc_lp__o32ai_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__o32ai_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__o32ai_4 A1 A2 A3 B1 B2 VGND VNB VPB VPWR Y
 M1000 VPWR A1 a_1256_349# VPB phighvt w=1.26e+06u l=150000u
@@ -82,4 +97,3 @@
 M1039 a_30_47# B1 Y VNB nshort w=840000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o32ai/sky130_fd_sc_lp__o32ai_lp.spice b/cells/o32ai/sky130_fd_sc_lp__o32ai_lp.spice
index 240001e..fe561bd 100644
--- a/cells/o32ai/sky130_fd_sc_lp__o32ai_lp.spice
+++ b/cells/o32ai/sky130_fd_sc_lp__o32ai_lp.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__o32ai_lp.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__o32ai_lp A1 A2 A3 B1 B2 VGND VNB VPB VPWR Y
 M1000 Y B2 a_134_419# VPB phighvt w=1e+06u l=250000u
@@ -22,4 +37,3 @@
 M1009 Y B1 a_27_179# VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o32ai/sky130_fd_sc_lp__o32ai_m.spice b/cells/o32ai/sky130_fd_sc_lp__o32ai_m.spice
index 2fbfec5..ddf9eef 100644
--- a/cells/o32ai/sky130_fd_sc_lp__o32ai_m.spice
+++ b/cells/o32ai/sky130_fd_sc_lp__o32ai_m.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__o32ai_m.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__o32ai_m A1 A2 A3 B1 B2 VGND VNB VPB VPWR Y
 M1000 Y B2 a_179_535# VPB phighvt w=420000u l=150000u
@@ -22,4 +37,3 @@
 M1009 a_66_82# B2 Y VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o41a/sky130_fd_sc_lp__o41a_0.spice b/cells/o41a/sky130_fd_sc_lp__o41a_0.spice
index d449f9d..1a93f7d 100644
--- a/cells/o41a/sky130_fd_sc_lp__o41a_0.spice
+++ b/cells/o41a/sky130_fd_sc_lp__o41a_0.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__o41a_0.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__o41a_0 A1 A2 A3 A4 B1 VGND VNB VPB VPWR X
 M1000 a_319_51# A3 VGND VNB nshort w=420000u l=150000u
@@ -26,4 +41,3 @@
 M1011 a_603_483# A2 a_513_483# VPB phighvt w=640000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o41a/sky130_fd_sc_lp__o41a_1.spice b/cells/o41a/sky130_fd_sc_lp__o41a_1.spice
index 6771ddf..cb876af 100644
--- a/cells/o41a/sky130_fd_sc_lp__o41a_1.spice
+++ b/cells/o41a/sky130_fd_sc_lp__o41a_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__o41a_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__o41a_1 A1 A2 A3 A4 B1 VGND VNB VPB VPWR X
 M1000 a_447_367# A4 a_155_23# VPB phighvt w=1.26e+06u l=150000u
@@ -26,4 +41,3 @@
 M1011 a_375_49# A1 VGND VNB nshort w=840000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o41a/sky130_fd_sc_lp__o41a_2.spice b/cells/o41a/sky130_fd_sc_lp__o41a_2.spice
index b207c6b..9be461d 100644
--- a/cells/o41a/sky130_fd_sc_lp__o41a_2.spice
+++ b/cells/o41a/sky130_fd_sc_lp__o41a_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__o41a_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__o41a_2 A1 A2 A3 A4 B1 VGND VNB VPB VPWR X
 M1000 VGND a_102_53# X VNB nshort w=840000u l=150000u
@@ -30,4 +45,3 @@
 M1013 X a_102_53# VPWR VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o41a/sky130_fd_sc_lp__o41a_4.spice b/cells/o41a/sky130_fd_sc_lp__o41a_4.spice
index cf47f3b..3a1a6d0 100644
--- a/cells/o41a/sky130_fd_sc_lp__o41a_4.spice
+++ b/cells/o41a/sky130_fd_sc_lp__o41a_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__o41a_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__o41a_4 A1 A2 A3 A4 B1 VGND VNB VPB VPWR X
 M1000 X a_83_23# VGND VNB nshort w=840000u l=150000u
@@ -58,4 +73,3 @@
 M1027 a_907_345# A3 a_652_345# VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o41a/sky130_fd_sc_lp__o41a_lp.spice b/cells/o41a/sky130_fd_sc_lp__o41a_lp.spice
index ad40e11..2d1f746 100644
--- a/cells/o41a/sky130_fd_sc_lp__o41a_lp.spice
+++ b/cells/o41a/sky130_fd_sc_lp__o41a_lp.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__o41a_lp.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__o41a_lp A1 A2 A3 A4 B1 VGND VNB VPB VPWR X
 M1000 VGND A3 a_31_57# VNB nshort w=420000u l=150000u
@@ -28,4 +43,3 @@
 M1012 VPWR B1 a_457_412# VPB phighvt w=1e+06u l=250000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o41a/sky130_fd_sc_lp__o41a_m.spice b/cells/o41a/sky130_fd_sc_lp__o41a_m.spice
index 46ad110..6fff5d5 100644
--- a/cells/o41a/sky130_fd_sc_lp__o41a_m.spice
+++ b/cells/o41a/sky130_fd_sc_lp__o41a_m.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__o41a_m.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__o41a_m A1 A2 A3 A4 B1 VGND VNB VPB VPWR X
 M1000 VGND A2 a_300_51# VNB nshort w=420000u l=150000u
@@ -26,4 +41,3 @@
 M1011 VPWR A1 a_516_535# VPB phighvt w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o41ai/sky130_fd_sc_lp__o41ai_0.spice b/cells/o41ai/sky130_fd_sc_lp__o41ai_0.spice
index 7df5408..1568859 100644
--- a/cells/o41ai/sky130_fd_sc_lp__o41ai_0.spice
+++ b/cells/o41ai/sky130_fd_sc_lp__o41ai_0.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__o41ai_0.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__o41ai_0 A1 A2 A3 A4 B1 VGND VNB VPB VPWR Y
 M1000 Y B1 VPWR VPB phighvt w=640000u l=150000u
@@ -22,4 +37,3 @@
 M1009 VGND A2 a_218_57# VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o41ai/sky130_fd_sc_lp__o41ai_1.spice b/cells/o41ai/sky130_fd_sc_lp__o41ai_1.spice
index b020f81..d728a1c 100644
--- a/cells/o41ai/sky130_fd_sc_lp__o41ai_1.spice
+++ b/cells/o41ai/sky130_fd_sc_lp__o41ai_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__o41ai_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__o41ai_1 A1 A2 A3 A4 B1 VGND VNB VPB VPWR Y
 M1000 VGND A2 a_156_49# VNB nshort w=840000u l=150000u
@@ -22,4 +37,3 @@
 M1009 a_336_367# A3 a_264_367# VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o41ai/sky130_fd_sc_lp__o41ai_2.spice b/cells/o41ai/sky130_fd_sc_lp__o41ai_2.spice
index 1a77cfa..310e924 100644
--- a/cells/o41ai/sky130_fd_sc_lp__o41ai_2.spice
+++ b/cells/o41ai/sky130_fd_sc_lp__o41ai_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__o41ai_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__o41ai_2 A1 A2 A3 A4 B1 VGND VNB VPB VPWR Y
 M1000 a_808_367# A2 a_615_365# VPB phighvt w=1.26e+06u l=150000u
@@ -42,4 +57,3 @@
 M1019 a_615_365# A3 a_313_365# VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o41ai/sky130_fd_sc_lp__o41ai_4.spice b/cells/o41ai/sky130_fd_sc_lp__o41ai_4.spice
index 45bd3ca..8933580 100644
--- a/cells/o41ai/sky130_fd_sc_lp__o41ai_4.spice
+++ b/cells/o41ai/sky130_fd_sc_lp__o41ai_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__o41ai_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__o41ai_4 A1 A2 A3 A4 B1 VGND VNB VPB VPWR Y
 M1000 a_1346_367# A2 a_981_361# VPB phighvt w=1.26e+06u l=150000u
@@ -82,4 +97,3 @@
 M1039 a_192_47# A3 VGND VNB nshort w=840000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o41ai/sky130_fd_sc_lp__o41ai_lp.spice b/cells/o41ai/sky130_fd_sc_lp__o41ai_lp.spice
index 96016a8..432a084 100644
--- a/cells/o41ai/sky130_fd_sc_lp__o41ai_lp.spice
+++ b/cells/o41ai/sky130_fd_sc_lp__o41ai_lp.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__o41ai_lp.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__o41ai_lp A1 A2 A3 A4 B1 VGND VNB VPB VPWR Y
 M1000 a_153_57# A3 VGND VNB nshort w=420000u l=150000u
@@ -22,4 +37,3 @@
 M1009 a_259_419# A4 Y VPB phighvt w=1e+06u l=250000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o41ai/sky130_fd_sc_lp__o41ai_m.spice b/cells/o41ai/sky130_fd_sc_lp__o41ai_m.spice
index 49dcb2e..f03c9e5 100644
--- a/cells/o41ai/sky130_fd_sc_lp__o41ai_m.spice
+++ b/cells/o41ai/sky130_fd_sc_lp__o41ai_m.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__o41ai_m.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__o41ai_m A1 A2 A3 A4 B1 VGND VNB VPB VPWR Y
 M1000 Y B1 VPWR VPB phighvt w=420000u l=150000u
@@ -22,4 +37,3 @@
 M1009 VGND A2 a_175_47# VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/or2/sky130_fd_sc_lp__or2_0.spice b/cells/or2/sky130_fd_sc_lp__or2_0.spice
index 470dd51..08f92f5 100644
--- a/cells/or2/sky130_fd_sc_lp__or2_0.spice
+++ b/cells/or2/sky130_fd_sc_lp__or2_0.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__or2_0.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__or2_0 A B VGND VNB VPB VPWR X
 M1000 a_159_473# B a_76_473# VPB phighvt w=420000u l=150000u
@@ -14,4 +29,3 @@
 M1005 X a_76_473# VGND VNB nshort w=420000u l=150000u
 +  ad=1.113e+11p pd=1.37e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/or2/sky130_fd_sc_lp__or2_1.spice b/cells/or2/sky130_fd_sc_lp__or2_1.spice
index 151e618..4030f26 100644
--- a/cells/or2/sky130_fd_sc_lp__or2_1.spice
+++ b/cells/or2/sky130_fd_sc_lp__or2_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__or2_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__or2_1 A B VGND VNB VPB VPWR X
 M1000 X a_76_367# VGND VNB nshort w=840000u l=150000u
@@ -14,4 +29,3 @@
 M1005 VPWR A a_159_367# VPB phighvt w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/or2/sky130_fd_sc_lp__or2_2.spice b/cells/or2/sky130_fd_sc_lp__or2_2.spice
index 8575078..bcf01b1 100644
--- a/cells/or2/sky130_fd_sc_lp__or2_2.spice
+++ b/cells/or2/sky130_fd_sc_lp__or2_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__or2_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__or2_2 A B VGND VNB VPB VPWR X
 M1000 a_131_390# B a_48_390# VPB phighvt w=420000u l=150000u
@@ -18,4 +33,3 @@
 M1007 X a_48_390# VGND VNB nshort w=840000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/or2/sky130_fd_sc_lp__or2_4.spice b/cells/or2/sky130_fd_sc_lp__or2_4.spice
index 54f6c2e..8bed4ba 100644
--- a/cells/or2/sky130_fd_sc_lp__or2_4.spice
+++ b/cells/or2/sky130_fd_sc_lp__or2_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__or2_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__or2_4 A B VGND VNB VPB VPWR X
 M1000 VPWR a_27_367# X VPB phighvt w=1.26e+06u l=150000u
@@ -26,4 +41,3 @@
 M1011 a_110_367# B a_27_367# VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=3.339e+11p ps=3.05e+06u
 .ends
-
diff --git a/cells/or2/sky130_fd_sc_lp__or2_lp.spice b/cells/or2/sky130_fd_sc_lp__or2_lp.spice
index 1fdb168..d59452e 100644
--- a/cells/or2/sky130_fd_sc_lp__or2_lp.spice
+++ b/cells/or2/sky130_fd_sc_lp__or2_lp.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__or2_lp.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__or2_lp A B VGND VNB VPB VPWR X
 M1000 a_196_114# B a_154_468# VPB phighvt w=420000u l=150000u
@@ -22,4 +37,3 @@
 M1009 a_435_490# a_196_114# VPWR VPB phighvt w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/or2/sky130_fd_sc_lp__or2_lp2.spice b/cells/or2/sky130_fd_sc_lp__or2_lp2.spice
index f2a8fa9..c00d434 100644
--- a/cells/or2/sky130_fd_sc_lp__or2_lp2.spice
+++ b/cells/or2/sky130_fd_sc_lp__or2_lp2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__or2_lp2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__or2_lp2 A B VGND VNB VPB VPWR X
 M1000 VGND A a_356_57# VNB nshort w=420000u l=150000u
@@ -20,4 +35,3 @@
 M1008 a_226_409# B a_192_57# VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/or2/sky130_fd_sc_lp__or2_m.spice b/cells/or2/sky130_fd_sc_lp__or2_m.spice
index 8ed9511..4139b55 100644
--- a/cells/or2/sky130_fd_sc_lp__or2_m.spice
+++ b/cells/or2/sky130_fd_sc_lp__or2_m.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__or2_m.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__or2_m A B VGND VNB VPB VPWR X
 M1000 X a_63_397# VPWR VPB phighvt w=420000u l=150000u
@@ -14,4 +29,3 @@
 M1005 X a_63_397# VGND VNB nshort w=420000u l=150000u
 +  ad=1.113e+11p pd=1.37e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/or2b/sky130_fd_sc_lp__or2b_1.spice b/cells/or2b/sky130_fd_sc_lp__or2b_1.spice
index 5ed33d5..80c0c36 100644
--- a/cells/or2b/sky130_fd_sc_lp__or2b_1.spice
+++ b/cells/or2b/sky130_fd_sc_lp__or2b_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__or2b_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__or2b_1 A B_N VGND VNB VPB VPWR X
 M1000 VGND B_N a_27_535# VNB nshort w=420000u l=150000u
@@ -18,4 +33,3 @@
 M1007 VGND A a_224_382# VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/or2b/sky130_fd_sc_lp__or2b_2.spice b/cells/or2b/sky130_fd_sc_lp__or2b_2.spice
index 3130240..f439265 100644
--- a/cells/or2b/sky130_fd_sc_lp__or2b_2.spice
+++ b/cells/or2b/sky130_fd_sc_lp__or2b_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__or2b_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__or2b_2 A B_N VGND VNB VPB VPWR X
 M1000 X a_191_254# VGND VNB nshort w=840000u l=150000u
@@ -22,4 +37,3 @@
 M1009 VGND a_27_49# a_191_254# VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/or2b/sky130_fd_sc_lp__or2b_4.spice b/cells/or2b/sky130_fd_sc_lp__or2b_4.spice
index 99af321..f0b9dcd 100644
--- a/cells/or2b/sky130_fd_sc_lp__or2b_4.spice
+++ b/cells/or2b/sky130_fd_sc_lp__or2b_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__or2b_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__or2b_4 A B_N VGND VNB VPB VPWR X
 M1000 VGND A a_256_367# VNB nshort w=840000u l=150000u
@@ -30,4 +45,3 @@
 M1013 a_256_367# a_27_496# VGND VNB nshort w=840000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/or2b/sky130_fd_sc_lp__or2b_lp.spice b/cells/or2b/sky130_fd_sc_lp__or2b_lp.spice
index c40b3bd..c241cf9 100644
--- a/cells/or2b/sky130_fd_sc_lp__or2b_lp.spice
+++ b/cells/or2b/sky130_fd_sc_lp__or2b_lp.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__or2b_lp.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__or2b_lp A B_N VGND VNB VPB VPWR X
 M1000 X a_290_409# VPWR VPB phighvt w=1e+06u l=250000u
@@ -26,4 +41,3 @@
 M1011 VPWR B_N a_30_57# VPB phighvt w=1e+06u l=250000u
 +  ad=0p pd=0u as=2.85e+11p ps=2.57e+06u
 .ends
-
diff --git a/cells/or2b/sky130_fd_sc_lp__or2b_m.spice b/cells/or2b/sky130_fd_sc_lp__or2b_m.spice
index c9ded46..05df75b 100644
--- a/cells/or2b/sky130_fd_sc_lp__or2b_m.spice
+++ b/cells/or2b/sky130_fd_sc_lp__or2b_m.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__or2b_m.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__or2b_m A B_N VGND VNB VPB VPWR X
 M1000 a_224_378# a_27_496# VGND VNB nshort w=420000u l=150000u
@@ -18,4 +33,3 @@
 M1007 VGND A a_224_378# VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/or3/sky130_fd_sc_lp__or3_0.spice b/cells/or3/sky130_fd_sc_lp__or3_0.spice
index 4f7b839..ba454ec 100644
--- a/cells/or3/sky130_fd_sc_lp__or3_0.spice
+++ b/cells/or3/sky130_fd_sc_lp__or3_0.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__or3_0.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__or3_0 A B C VGND VNB VPB VPWR X
 M1000 a_191_481# C a_29_55# VPB phighvt w=420000u l=150000u
@@ -18,4 +33,3 @@
 M1007 a_29_55# B VGND VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/or3/sky130_fd_sc_lp__or3_1.spice b/cells/or3/sky130_fd_sc_lp__or3_1.spice
index 343fa77..70be2df 100644
--- a/cells/or3/sky130_fd_sc_lp__or3_1.spice
+++ b/cells/or3/sky130_fd_sc_lp__or3_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__or3_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__or3_1 A B C VGND VNB VPB VPWR X
 M1000 X a_47_47# VPWR VPB phighvt w=1.26e+06u l=150000u
@@ -18,4 +33,3 @@
 M1007 VGND C a_47_47# VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/or3/sky130_fd_sc_lp__or3_2.spice b/cells/or3/sky130_fd_sc_lp__or3_2.spice
index 0b2d300..e0624ad 100644
--- a/cells/or3/sky130_fd_sc_lp__or3_2.spice
+++ b/cells/or3/sky130_fd_sc_lp__or3_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__or3_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__or3_2 A B C VGND VNB VPB VPWR X
 M1000 VPWR a_35_60# X VPB phighvt w=1.26e+06u l=150000u
@@ -22,4 +37,3 @@
 M1009 a_132_367# C a_35_60# VPB phighvt w=420000u l=150000u
 +  ad=0p pd=0u as=1.113e+11p ps=1.37e+06u
 .ends
-
diff --git a/cells/or3/sky130_fd_sc_lp__or3_4.spice b/cells/or3/sky130_fd_sc_lp__or3_4.spice
index 5f100a3..9bbb7d8 100644
--- a/cells/or3/sky130_fd_sc_lp__or3_4.spice
+++ b/cells/or3/sky130_fd_sc_lp__or3_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__or3_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__or3_4 A B C VGND VNB VPB VPWR X
 M1000 a_160_367# C a_77_49# VPB phighvt w=1.26e+06u l=150000u
@@ -30,4 +45,3 @@
 M1013 VGND A a_77_49# VNB nshort w=840000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/or3/sky130_fd_sc_lp__or3_lp.spice b/cells/or3/sky130_fd_sc_lp__or3_lp.spice
index cfbfb68..b958e54 100644
--- a/cells/or3/sky130_fd_sc_lp__or3_lp.spice
+++ b/cells/or3/sky130_fd_sc_lp__or3_lp.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__or3_lp.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__or3_lp A B C VGND VNB VPB VPWR X
 M1000 a_541_409# B a_443_409# VPB phighvt w=1e+06u l=250000u
@@ -26,4 +41,3 @@
 M1011 VGND B a_454_57# VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/or3/sky130_fd_sc_lp__or3_m.spice b/cells/or3/sky130_fd_sc_lp__or3_m.spice
index c0e03e9..cc394c2 100644
--- a/cells/or3/sky130_fd_sc_lp__or3_m.spice
+++ b/cells/or3/sky130_fd_sc_lp__or3_m.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__or3_m.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__or3_m A B C VGND VNB VPB VPWR X
 M1000 X a_43_47# VPWR VPB phighvt w=420000u l=150000u
@@ -18,4 +33,3 @@
 M1007 a_288_397# B a_216_397# VPB phighvt w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/or3b/sky130_fd_sc_lp__or3b_1.spice b/cells/or3b/sky130_fd_sc_lp__or3b_1.spice
index 6c634bb..bf1787d 100644
--- a/cells/or3b/sky130_fd_sc_lp__or3b_1.spice
+++ b/cells/or3b/sky130_fd_sc_lp__or3b_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__or3b_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__or3b_1 A B C_N VGND VNB VPB VPWR X
 M1000 a_375_367# B a_303_367# VPB phighvt w=420000u l=150000u
@@ -22,4 +37,3 @@
 M1009 a_303_367# a_110_70# a_220_74# VPB phighvt w=420000u l=150000u
 +  ad=0p pd=0u as=1.113e+11p ps=1.37e+06u
 .ends
-
diff --git a/cells/or3b/sky130_fd_sc_lp__or3b_2.spice b/cells/or3b/sky130_fd_sc_lp__or3b_2.spice
index 1400bdb..fac51de 100644
--- a/cells/or3b/sky130_fd_sc_lp__or3b_2.spice
+++ b/cells/or3b/sky130_fd_sc_lp__or3b_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__or3b_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__or3b_2 A B C_N VGND VNB VPB VPWR X
 M1000 a_448_385# A VPWR VPB phighvt w=420000u l=150000u
@@ -26,4 +41,3 @@
 M1011 a_195_21# A VGND VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/or3b/sky130_fd_sc_lp__or3b_4.spice b/cells/or3b/sky130_fd_sc_lp__or3b_4.spice
index e43f564..65f1798 100644
--- a/cells/or3b/sky130_fd_sc_lp__or3b_4.spice
+++ b/cells/or3b/sky130_fd_sc_lp__or3b_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__or3b_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__or3b_4 A B C_N VGND VNB VPB VPWR X
 M1000 a_253_23# a_49_133# a_728_367# VPB phighvt w=1.26e+06u l=150000u
@@ -34,4 +49,3 @@
 M1015 VGND C_N a_49_133# VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=1.113e+11p ps=1.37e+06u
 .ends
-
diff --git a/cells/or3b/sky130_fd_sc_lp__or3b_lp.spice b/cells/or3b/sky130_fd_sc_lp__or3b_lp.spice
index bd18d34..674035d 100644
--- a/cells/or3b/sky130_fd_sc_lp__or3b_lp.spice
+++ b/cells/or3b/sky130_fd_sc_lp__or3b_lp.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__or3b_lp.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__or3b_lp A B C_N VGND VNB VPB VPWR X
 M1000 X a_350_47# a_804_101# VNB nshort w=420000u l=150000u
@@ -32,4 +47,3 @@
 M1014 VGND C_N a_114_47# VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/or3b/sky130_fd_sc_lp__or3b_m.spice b/cells/or3b/sky130_fd_sc_lp__or3b_m.spice
index 2f9ae0f..64084fc 100644
--- a/cells/or3b/sky130_fd_sc_lp__or3b_m.spice
+++ b/cells/or3b/sky130_fd_sc_lp__or3b_m.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__or3b_m.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__or3b_m A B C_N VGND VNB VPB VPWR X
 M1000 a_112_55# C_N VGND VNB nshort w=420000u l=150000u
@@ -22,4 +37,3 @@
 M1009 VPWR A a_371_418# VPB phighvt w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/or4/sky130_fd_sc_lp__or4_0.spice b/cells/or4/sky130_fd_sc_lp__or4_0.spice
index 60751db..793e53d 100644
--- a/cells/or4/sky130_fd_sc_lp__or4_0.spice
+++ b/cells/or4/sky130_fd_sc_lp__or4_0.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__or4_0.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__or4_0 A B C D VGND VNB VPB VPWR X
 M1000 a_54_482# D VGND VNB nshort w=420000u l=150000u
@@ -22,4 +37,3 @@
 M1009 VGND C a_54_482# VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/or4/sky130_fd_sc_lp__or4_1.spice b/cells/or4/sky130_fd_sc_lp__or4_1.spice
index d212d31..c9ae26d 100644
--- a/cells/or4/sky130_fd_sc_lp__or4_1.spice
+++ b/cells/or4/sky130_fd_sc_lp__or4_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__or4_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__or4_1 A B C D VGND VNB VPB VPWR X
 M1000 a_40_480# B VGND VNB nshort w=420000u l=150000u
@@ -22,4 +37,3 @@
 M1009 X a_40_480# VGND VNB nshort w=840000u l=150000u
 +  ad=2.226e+11p pd=2.21e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/or4/sky130_fd_sc_lp__or4_2.spice b/cells/or4/sky130_fd_sc_lp__or4_2.spice
index 6cf28be..04000ff 100644
--- a/cells/or4/sky130_fd_sc_lp__or4_2.spice
+++ b/cells/or4/sky130_fd_sc_lp__or4_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__or4_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__or4_2 A B C D VGND VNB VPB VPWR X
 M1000 a_72_367# B VGND VNB nshort w=420000u l=150000u
@@ -26,4 +41,3 @@
 M1011 X a_72_367# VGND VNB nshort w=840000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/or4/sky130_fd_sc_lp__or4_4.spice b/cells/or4/sky130_fd_sc_lp__or4_4.spice
index 50a39b5..2196710 100644
--- a/cells/or4/sky130_fd_sc_lp__or4_4.spice
+++ b/cells/or4/sky130_fd_sc_lp__or4_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__or4_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__or4_4 A B C D VGND VNB VPB VPWR X
 M1000 a_141_367# D a_58_367# VPB phighvt w=1.26e+06u l=150000u
@@ -34,4 +49,3 @@
 M1015 X a_58_367# VGND VNB nshort w=840000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/or4/sky130_fd_sc_lp__or4_lp.spice b/cells/or4/sky130_fd_sc_lp__or4_lp.spice
index 886c5ce..2184761 100644
--- a/cells/or4/sky130_fd_sc_lp__or4_lp.spice
+++ b/cells/or4/sky130_fd_sc_lp__or4_lp.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__or4_lp.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__or4_lp A B C D VGND VNB VPB VPWR X
 M1000 VGND A a_646_167# VNB nshort w=420000u l=150000u
@@ -32,4 +47,3 @@
 M1014 VGND D a_114_47# VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/or4/sky130_fd_sc_lp__or4_m.spice b/cells/or4/sky130_fd_sc_lp__or4_m.spice
index a43d733..e1b066a 100644
--- a/cells/or4/sky130_fd_sc_lp__or4_m.spice
+++ b/cells/or4/sky130_fd_sc_lp__or4_m.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__or4_m.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__or4_m A B C D VGND VNB VPB VPWR X
 M1000 VPWR A a_343_397# VPB phighvt w=420000u l=150000u
@@ -22,4 +37,3 @@
 M1009 VGND C a_116_397# VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/or4b/sky130_fd_sc_lp__or4b_1.spice b/cells/or4b/sky130_fd_sc_lp__or4b_1.spice
index e6e65a6..99b76ed 100644
--- a/cells/or4b/sky130_fd_sc_lp__or4b_1.spice
+++ b/cells/or4b/sky130_fd_sc_lp__or4b_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__or4b_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__or4b_1 A B C D_N VGND VNB VPB VPWR X
 M1000 VGND A a_220_367# VNB nshort w=420000u l=150000u
@@ -26,4 +41,3 @@
 M1011 a_220_367# B VGND VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/or4b/sky130_fd_sc_lp__or4b_2.spice b/cells/or4b/sky130_fd_sc_lp__or4b_2.spice
index a19df15..f7917bb 100644
--- a/cells/or4b/sky130_fd_sc_lp__or4b_2.spice
+++ b/cells/or4b/sky130_fd_sc_lp__or4b_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__or4b_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__or4b_2 A B C D_N VGND VNB VPB VPWR X
 M1000 X a_189_21# VPWR VPB phighvt w=1.26e+06u l=150000u
@@ -30,4 +45,3 @@
 M1013 a_508_385# B a_436_385# VPB phighvt w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/or4b/sky130_fd_sc_lp__or4b_4.spice b/cells/or4b/sky130_fd_sc_lp__or4b_4.spice
index f01e4c7..c129330 100644
--- a/cells/or4b/sky130_fd_sc_lp__or4b_4.spice
+++ b/cells/or4b/sky130_fd_sc_lp__or4b_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__or4b_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__or4b_4 A B C D_N VGND VNB VPB VPWR X
 M1000 X a_83_21# VGND VNB nshort w=840000u l=150000u
@@ -38,4 +53,3 @@
 M1017 a_737_315# D_N VGND VNB nshort w=420000u l=150000u
 +  ad=1.113e+11p pd=1.37e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/or4b/sky130_fd_sc_lp__or4b_lp.spice b/cells/or4b/sky130_fd_sc_lp__or4b_lp.spice
index f8862b1..8a268f2 100644
--- a/cells/or4b/sky130_fd_sc_lp__or4b_lp.spice
+++ b/cells/or4b/sky130_fd_sc_lp__or4b_lp.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__or4b_lp.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__or4b_lp A B C D_N VGND VNB VPB VPWR X
 M1000 a_311_417# a_27_57# a_270_57# VNB nshort w=420000u l=150000u
@@ -38,4 +53,3 @@
 M1017 a_270_57# a_27_57# VGND VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/or4b/sky130_fd_sc_lp__or4b_m.spice b/cells/or4b/sky130_fd_sc_lp__or4b_m.spice
index ab057fe..1ee4686 100644
--- a/cells/or4b/sky130_fd_sc_lp__or4b_m.spice
+++ b/cells/or4b/sky130_fd_sc_lp__or4b_m.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__or4b_m.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__or4b_m A B C D_N VGND VNB VPB VPWR X
 M1000 a_338_397# a_38_125# a_215_125# VPB phighvt w=420000u l=150000u
@@ -26,4 +41,3 @@
 M1011 VGND A a_215_125# VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/or4bb/sky130_fd_sc_lp__or4bb_1.spice b/cells/or4bb/sky130_fd_sc_lp__or4bb_1.spice
index 3afdf6d..e54f891 100644
--- a/cells/or4bb/sky130_fd_sc_lp__or4bb_1.spice
+++ b/cells/or4bb/sky130_fd_sc_lp__or4bb_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__or4bb_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__or4bb_1 A B C_N D_N VGND VNB VPB VPWR X
 M1000 a_415_391# a_196_535# a_332_391# VPB phighvt w=420000u l=150000u
@@ -30,4 +45,3 @@
 M1013 a_332_391# B VGND VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/or4bb/sky130_fd_sc_lp__or4bb_2.spice b/cells/or4bb/sky130_fd_sc_lp__or4bb_2.spice
index 9d951d9..e0c840f 100644
--- a/cells/or4bb/sky130_fd_sc_lp__or4bb_2.spice
+++ b/cells/or4bb/sky130_fd_sc_lp__or4bb_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__or4bb_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__or4bb_2 A B C_N D_N VGND VNB VPB VPWR X
 M1000 a_276_47# A VGND VNB nshort w=420000u l=150000u
@@ -34,4 +49,3 @@
 M1015 a_276_47# a_462_351# a_420_403# VPB phighvt w=420000u l=150000u
 +  ad=1.113e+11p pd=1.37e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/or4bb/sky130_fd_sc_lp__or4bb_4.spice b/cells/or4bb/sky130_fd_sc_lp__or4bb_4.spice
index e22c210..fffc581 100644
--- a/cells/or4bb/sky130_fd_sc_lp__or4bb_4.spice
+++ b/cells/or4bb/sky130_fd_sc_lp__or4bb_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__or4bb_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__or4bb_4 A B C_N D_N VGND VNB VPB VPWR X
 M1000 VPWR a_270_53# X VPB phighvt w=1.26e+06u l=150000u
@@ -42,4 +57,3 @@
 M1019 VPWR a_270_53# X VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/or4bb/sky130_fd_sc_lp__or4bb_lp.spice b/cells/or4bb/sky130_fd_sc_lp__or4bb_lp.spice
index 574b34e..b77425d 100644
--- a/cells/or4bb/sky130_fd_sc_lp__or4bb_lp.spice
+++ b/cells/or4bb/sky130_fd_sc_lp__or4bb_lp.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__or4bb_lp.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__or4bb_lp A B C_N D_N VGND VNB VPB VPWR X
 M1000 a_318_409# C_N VPWR VPB phighvt w=1e+06u l=250000u
@@ -44,4 +59,3 @@
 M1020 VPWR A a_1076_419# VPB phighvt w=1e+06u l=250000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/or4bb/sky130_fd_sc_lp__or4bb_m.spice b/cells/or4bb/sky130_fd_sc_lp__or4bb_m.spice
index a0092c8..73cca74 100644
--- a/cells/or4bb/sky130_fd_sc_lp__or4bb_m.spice
+++ b/cells/or4bb/sky130_fd_sc_lp__or4bb_m.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__or4bb_m.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__or4bb_m A B C_N D_N VGND VNB VPB VPWR X
 M1000 X a_336_439# VPWR VPB phighvt w=420000u l=150000u
@@ -30,4 +45,3 @@
 M1013 a_336_439# B VGND VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/sdfbbn/sky130_fd_sc_lp__sdfbbn_1.spice b/cells/sdfbbn/sky130_fd_sc_lp__sdfbbn_1.spice
index 11b1061..719d29d 100644
--- a/cells/sdfbbn/sky130_fd_sc_lp__sdfbbn_1.spice
+++ b/cells/sdfbbn/sky130_fd_sc_lp__sdfbbn_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__sdfbbn_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__sdfbbn_1 CLK_N D RESET_B SCD SCE SET_B VGND VNB VPB VPWR
 + Q Q_N
@@ -99,4 +114,3 @@
 M1047 a_328_429# SCE VPWR VPB phighvt w=640000u l=150000u
 +  ad=1.824e+11p pd=1.85e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/sdfbbn/sky130_fd_sc_lp__sdfbbn_2.spice b/cells/sdfbbn/sky130_fd_sc_lp__sdfbbn_2.spice
index 5899e60..cd686d9 100644
--- a/cells/sdfbbn/sky130_fd_sc_lp__sdfbbn_2.spice
+++ b/cells/sdfbbn/sky130_fd_sc_lp__sdfbbn_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__sdfbbn_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__sdfbbn_2 CLK_N D RESET_B SCD SCE SET_B VGND VNB VPB VPWR
 + Q Q_N
@@ -107,4 +122,3 @@
 M1051 a_202_119# D a_245_481# VPB phighvt w=640000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/sdfbbp/sky130_fd_sc_lp__sdfbbp_1.spice b/cells/sdfbbp/sky130_fd_sc_lp__sdfbbp_1.spice
index 2e2f3b5..66c2e4c 100644
--- a/cells/sdfbbp/sky130_fd_sc_lp__sdfbbp_1.spice
+++ b/cells/sdfbbp/sky130_fd_sc_lp__sdfbbp_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__sdfbbp_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__sdfbbp_1 CLK D RESET_B SCD SCE SET_B VNB VPB Q Q_N
 M1000 VPB RESET_B a_1650_21# w_n38_331# phighvt w=640000u l=150000u
@@ -98,4 +113,3 @@
 M1047 a_2279_57# a_1650_21# a_2064_453# w_0_0# nshort w=640000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/sdfrbp/sky130_fd_sc_lp__sdfrbp_1.spice b/cells/sdfrbp/sky130_fd_sc_lp__sdfrbp_1.spice
index 98758fe..a824170 100644
--- a/cells/sdfrbp/sky130_fd_sc_lp__sdfrbp_1.spice
+++ b/cells/sdfrbp/sky130_fd_sc_lp__sdfrbp_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__sdfrbp_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__sdfrbp_1 CLK D RESET_B SCD SCE VGND VNB VPB VPWR Q Q_N
 M1000 VPWR SCE a_27_75# VPB phighvt w=640000u l=150000u
@@ -90,4 +105,3 @@
 M1043 a_1812_379# a_1024_367# a_1374_362# VNB nshort w=640000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/sdfrbp/sky130_fd_sc_lp__sdfrbp_2.spice b/cells/sdfrbp/sky130_fd_sc_lp__sdfrbp_2.spice
index 90d8349..3e0f4d3 100644
--- a/cells/sdfrbp/sky130_fd_sc_lp__sdfrbp_2.spice
+++ b/cells/sdfrbp/sky130_fd_sc_lp__sdfrbp_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__sdfrbp_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__sdfrbp_2 CLK D RESET_B SCD SCE VGND VNB VPB VPWR Q Q_N
 M1000 VPWR a_1290_365# a_1248_463# VPB phighvt w=420000u l=150000u
@@ -98,4 +113,3 @@
 M1047 a_240_81# SCD a_486_81# VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/sdfrbp/sky130_fd_sc_lp__sdfrbp_lp.spice b/cells/sdfrbp/sky130_fd_sc_lp__sdfrbp_lp.spice
index 99d8c4f..b74b9de 100644
--- a/cells/sdfrbp/sky130_fd_sc_lp__sdfrbp_lp.spice
+++ b/cells/sdfrbp/sky130_fd_sc_lp__sdfrbp_lp.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__sdfrbp_lp.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__sdfrbp_lp CLK D RESET_B SCD SCE VGND VNB VPB VPWR Q Q_N
 M1000 a_1661_87# a_911_219# a_1147_490# VNB nshort w=640000u l=150000u
@@ -122,4 +137,3 @@
 M1059 a_428_261# D a_342_261# VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/sdfrtn/sky130_fd_sc_lp__sdfrtn_1.spice b/cells/sdfrtn/sky130_fd_sc_lp__sdfrtn_1.spice
index c05e596..03c9c0e 100644
--- a/cells/sdfrtn/sky130_fd_sc_lp__sdfrtn_1.spice
+++ b/cells/sdfrtn/sky130_fd_sc_lp__sdfrtn_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__sdfrtn_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__sdfrtn_1 CLK_N D RESET_B SCD SCE VGND VNB VPB VPWR Q
 M1000 VPWR RESET_B a_229_491# VPB phighvt w=640000u l=150000u
@@ -82,4 +97,3 @@
 M1039 a_113_63# SCE VGND VNB nshort w=420000u l=150000u
 +  ad=1.113e+11p pd=1.37e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/sdfrtp/sky130_fd_sc_lp__sdfrtp_1.spice b/cells/sdfrtp/sky130_fd_sc_lp__sdfrtp_1.spice
index fc107df..619e1ad 100644
--- a/cells/sdfrtp/sky130_fd_sc_lp__sdfrtp_1.spice
+++ b/cells/sdfrtp/sky130_fd_sc_lp__sdfrtp_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__sdfrtp_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__sdfrtp_1 CLK D RESET_B SCD SCE VGND VNB VPB VPWR Q
 M1000 a_225_50# SCD a_512_81# VNB nshort w=420000u l=150000u
@@ -82,4 +97,3 @@
 M1039 VGND a_1445_69# a_2408_367# VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=1.113e+11p ps=1.37e+06u
 .ends
-
diff --git a/cells/sdfrtp/sky130_fd_sc_lp__sdfrtp_2.spice b/cells/sdfrtp/sky130_fd_sc_lp__sdfrtp_2.spice
index 20e3098..9376601 100644
--- a/cells/sdfrtp/sky130_fd_sc_lp__sdfrtp_2.spice
+++ b/cells/sdfrtp/sky130_fd_sc_lp__sdfrtp_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__sdfrtp_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__sdfrtp_2 CLK D RESET_B SCD SCE VGND VNB VPB VPWR Q
 M1000 a_225_50# SCD a_512_81# VNB nshort w=420000u l=150000u
@@ -86,4 +101,3 @@
 M1041 VGND a_2431_47# Q VNB nshort w=840000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/sdfrtp/sky130_fd_sc_lp__sdfrtp_4.spice b/cells/sdfrtp/sky130_fd_sc_lp__sdfrtp_4.spice
index 4e29c3b..1a7702e 100644
--- a/cells/sdfrtp/sky130_fd_sc_lp__sdfrtp_4.spice
+++ b/cells/sdfrtp/sky130_fd_sc_lp__sdfrtp_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__sdfrtp_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__sdfrtp_4 CLK D RESET_B SCD SCE VGND VNB VPB VPWR Q
 M1000 VGND SCE a_27_74# VNB nshort w=420000u l=150000u
@@ -94,4 +109,3 @@
 M1045 a_1201_119# a_1047_369# a_1107_119# VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/sdfrtp/sky130_fd_sc_lp__sdfrtp_lp2.spice b/cells/sdfrtp/sky130_fd_sc_lp__sdfrtp_lp2.spice
index 1175857..35606d4 100644
--- a/cells/sdfrtp/sky130_fd_sc_lp__sdfrtp_lp2.spice
+++ b/cells/sdfrtp/sky130_fd_sc_lp__sdfrtp_lp2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__sdfrtp_lp2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__sdfrtp_lp2 CLK D RESET_B SCD SCE VGND VNB VPB VPWR Q
 M1000 a_141_88# a_81_194# a_38_41# VNB nshort w=420000u l=150000u
@@ -94,4 +109,3 @@
 M1045 VPWR a_1605_93# a_1633_347# VPB phighvt w=1e+06u l=250000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/sdfrtp_ov2/sky130_fd_sc_lp__sdfrtp_ov2.spice b/cells/sdfrtp_ov2/sky130_fd_sc_lp__sdfrtp_ov2.spice
index fa8039e..b1639fc 100644
--- a/cells/sdfrtp_ov2/sky130_fd_sc_lp__sdfrtp_ov2.spice
+++ b/cells/sdfrtp_ov2/sky130_fd_sc_lp__sdfrtp_ov2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__sdfrtp_ov2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__sdfrtp_ov2 CLK D RESET_B SCD SCE VGND VNB VPB VPWR Q
 M1000 a_225_50# SCD a_512_81# VNB nshort w=420000u l=150000u
@@ -82,4 +97,3 @@
 M1039 VGND a_1445_113# a_2408_367# VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=1.113e+11p ps=1.37e+06u
 .ends
-
diff --git a/cells/sdfsbp/sky130_fd_sc_lp__sdfsbp_1.spice b/cells/sdfsbp/sky130_fd_sc_lp__sdfsbp_1.spice
index 664cb0b..caa045d 100644
--- a/cells/sdfsbp/sky130_fd_sc_lp__sdfsbp_1.spice
+++ b/cells/sdfsbp/sky130_fd_sc_lp__sdfsbp_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__sdfsbp_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__sdfsbp_1 CLK D SCD SCE SET_B VGND VNB VPB VPWR Q Q_N
 M1000 a_1232_463# a_640_481# a_1146_463# VPB phighvt w=420000u l=150000u
@@ -86,4 +101,3 @@
 M1041 VGND SET_B a_1575_119# VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/sdfsbp/sky130_fd_sc_lp__sdfsbp_2.spice b/cells/sdfsbp/sky130_fd_sc_lp__sdfsbp_2.spice
index 4d6acfe..2906859 100644
--- a/cells/sdfsbp/sky130_fd_sc_lp__sdfsbp_2.spice
+++ b/cells/sdfsbp/sky130_fd_sc_lp__sdfsbp_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__sdfsbp_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__sdfsbp_2 CLK D SCD SCE SET_B VGND VNB VPB VPWR Q Q_N
 M1000 a_1799_408# SET_B VPWR VPB phighvt w=420000u l=150000u
@@ -94,4 +109,3 @@
 M1045 VGND SET_B a_2001_119# VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/sdfsbp/sky130_fd_sc_lp__sdfsbp_lp.spice b/cells/sdfsbp/sky130_fd_sc_lp__sdfsbp_lp.spice
index 24f0249..26138ba 100644
--- a/cells/sdfsbp/sky130_fd_sc_lp__sdfsbp_lp.spice
+++ b/cells/sdfsbp/sky130_fd_sc_lp__sdfsbp_lp.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__sdfsbp_lp.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__sdfsbp_lp CLK D SCD SCE SET_B VGND VNB VPB VPWR Q Q_N
 M1000 a_2019_419# a_761_113# a_1921_419# VPB phighvt w=1e+06u l=250000u
@@ -100,4 +115,3 @@
 M1048 VGND SET_B a_2250_66# VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/sdfstp/sky130_fd_sc_lp__sdfstp_1.spice b/cells/sdfstp/sky130_fd_sc_lp__sdfstp_1.spice
index 236fedf..786b48d 100644
--- a/cells/sdfstp/sky130_fd_sc_lp__sdfstp_1.spice
+++ b/cells/sdfstp/sky130_fd_sc_lp__sdfstp_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__sdfstp_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__sdfstp_1 CLK D SCD SCE SET_B VGND VNB VPB VPWR Q
 M1000 a_196_128# SCE a_124_128# VNB nshort w=420000u l=150000u
@@ -82,4 +97,3 @@
 M1039 a_1502_125# a_1135_57# a_1263_31# VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=1.113e+11p ps=1.37e+06u
 .ends
-
diff --git a/cells/sdfstp/sky130_fd_sc_lp__sdfstp_2.spice b/cells/sdfstp/sky130_fd_sc_lp__sdfstp_2.spice
index 4d72918..f78ec7f 100644
--- a/cells/sdfstp/sky130_fd_sc_lp__sdfstp_2.spice
+++ b/cells/sdfstp/sky130_fd_sc_lp__sdfstp_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__sdfstp_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__sdfstp_2 CLK D SCD SCE SET_B VGND VNB VPB VPWR Q
 M1000 a_963_47# a_794_47# VPWR VPB phighvt w=640000u l=150000u
@@ -86,4 +101,3 @@
 M1041 VPWR a_1998_463# a_2686_131# VPB phighvt w=640000u l=150000u
 +  ad=0p pd=0u as=1.696e+11p ps=1.81e+06u
 .ends
-
diff --git a/cells/sdfstp/sky130_fd_sc_lp__sdfstp_4.spice b/cells/sdfstp/sky130_fd_sc_lp__sdfstp_4.spice
index 6edffed..3d3585d 100644
--- a/cells/sdfstp/sky130_fd_sc_lp__sdfstp_4.spice
+++ b/cells/sdfstp/sky130_fd_sc_lp__sdfstp_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__sdfstp_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__sdfstp_4 CLK D SCD SCE SET_B VGND VNB VPB VPWR Q
 M1000 VGND a_346_93# a_304_119# VNB nshort w=420000u l=150000u
@@ -94,4 +109,3 @@
 M1045 VGND a_2638_53# Q VNB nshort w=840000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/sdfstp/sky130_fd_sc_lp__sdfstp_lp.spice b/cells/sdfstp/sky130_fd_sc_lp__sdfstp_lp.spice
index a99456b..6d1c112 100644
--- a/cells/sdfstp/sky130_fd_sc_lp__sdfstp_lp.spice
+++ b/cells/sdfstp/sky130_fd_sc_lp__sdfstp_lp.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__sdfstp_lp.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__sdfstp_lp CLK D SCD SCE SET_B VGND VNB VPB VPWR Q
 M1000 a_245_406# SCD VPWR VPB phighvt w=1e+06u l=250000u
@@ -94,4 +109,3 @@
 M1045 a_1383_125# a_986_409# a_1199_419# VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/sdfxbp/sky130_fd_sc_lp__sdfxbp_1.spice b/cells/sdfxbp/sky130_fd_sc_lp__sdfxbp_1.spice
index 754968b..e0d4af2 100644
--- a/cells/sdfxbp/sky130_fd_sc_lp__sdfxbp_1.spice
+++ b/cells/sdfxbp/sky130_fd_sc_lp__sdfxbp_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__sdfxbp_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__sdfxbp_1 CLK D SCD SCE VGND VNB VPB VPWR Q Q_N
 M1000 a_196_119# D a_196_483# VPB phighvt w=640000u l=150000u
@@ -74,4 +89,3 @@
 M1035 a_767_121# a_1161_95# a_1873_497# VPB phighvt w=840000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/sdfxbp/sky130_fd_sc_lp__sdfxbp_2.spice b/cells/sdfxbp/sky130_fd_sc_lp__sdfxbp_2.spice
index a5de243..48fea85 100644
--- a/cells/sdfxbp/sky130_fd_sc_lp__sdfxbp_2.spice
+++ b/cells/sdfxbp/sky130_fd_sc_lp__sdfxbp_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__sdfxbp_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__sdfxbp_2 CLK D SCD SCE VGND VNB VPB VPWR Q Q_N
 M1000 VGND a_2122_329# a_2097_122# VNB nshort w=420000u l=150000u
@@ -82,4 +97,3 @@
 M1039 a_733_21# a_1102_93# a_182_120# VPB phighvt w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/sdfxbp/sky130_fd_sc_lp__sdfxbp_lp.spice b/cells/sdfxbp/sky130_fd_sc_lp__sdfxbp_lp.spice
index ad936be..2507ea7 100644
--- a/cells/sdfxbp/sky130_fd_sc_lp__sdfxbp_lp.spice
+++ b/cells/sdfxbp/sky130_fd_sc_lp__sdfxbp_lp.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__sdfxbp_lp.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__sdfxbp_lp CLK D SCD SCE VGND VNB VPB VPWR Q Q_N
 M1000 a_2089_254# a_1902_347# VPWR VPB phighvt w=1e+06u l=250000u
@@ -90,4 +105,3 @@
 M1043 a_2593_127# a_2089_254# Q VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=1.113e+11p ps=1.37e+06u
 .ends
-
diff --git a/cells/sdfxtp/sky130_fd_sc_lp__sdfxtp_1.spice b/cells/sdfxtp/sky130_fd_sc_lp__sdfxtp_1.spice
index ac583c8..570beb0 100644
--- a/cells/sdfxtp/sky130_fd_sc_lp__sdfxtp_1.spice
+++ b/cells/sdfxtp/sky130_fd_sc_lp__sdfxtp_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__sdfxtp_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__sdfxtp_1 CLK D SCD SCE VGND VNB VPB VPWR Q
 M1000 a_1657_383# a_1459_449# VGND VNB nshort w=640000u l=150000u
@@ -66,4 +81,3 @@
 M1031 a_464_123# SCE a_319_123# VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/sdfxtp/sky130_fd_sc_lp__sdfxtp_2.spice b/cells/sdfxtp/sky130_fd_sc_lp__sdfxtp_2.spice
index 0f84ae3..8dcbf21 100644
--- a/cells/sdfxtp/sky130_fd_sc_lp__sdfxtp_2.spice
+++ b/cells/sdfxtp/sky130_fd_sc_lp__sdfxtp_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__sdfxtp_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__sdfxtp_2 CLK D SCD SCE VGND VNB VPB VPWR Q
 M1000 a_1665_381# a_1517_63# VPWR VPB phighvt w=840000u l=150000u
@@ -70,4 +85,3 @@
 M1033 a_1517_63# a_831_47# a_1178_399# VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/sdfxtp/sky130_fd_sc_lp__sdfxtp_4.spice b/cells/sdfxtp/sky130_fd_sc_lp__sdfxtp_4.spice
index 37a4e5e..46f55f1 100644
--- a/cells/sdfxtp/sky130_fd_sc_lp__sdfxtp_4.spice
+++ b/cells/sdfxtp/sky130_fd_sc_lp__sdfxtp_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__sdfxtp_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__sdfxtp_4 CLK D SCD SCE VGND VNB VPB VPWR Q
 M1000 a_483_123# SCE a_359_123# VNB nshort w=420000u l=150000u
@@ -78,4 +93,3 @@
 M1037 a_260_123# a_91_123# VGND VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/sdfxtp/sky130_fd_sc_lp__sdfxtp_lp.spice b/cells/sdfxtp/sky130_fd_sc_lp__sdfxtp_lp.spice
index df9da6f..c7365ee 100644
--- a/cells/sdfxtp/sky130_fd_sc_lp__sdfxtp_lp.spice
+++ b/cells/sdfxtp/sky130_fd_sc_lp__sdfxtp_lp.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__sdfxtp_lp.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__sdfxtp_lp CLK D SCD SCE VGND VNB VPB VPWR Q
 M1000 a_457_417# D a_351_417# VPB phighvt w=1e+06u l=250000u
@@ -78,4 +93,3 @@
 M1037 VGND a_1576_99# a_1160_155# VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/sdlclkp/sky130_fd_sc_lp__sdlclkp_1.spice b/cells/sdlclkp/sky130_fd_sc_lp__sdlclkp_1.spice
index 98c86f1..5f2b2f0 100644
--- a/cells/sdlclkp/sky130_fd_sc_lp__sdlclkp_1.spice
+++ b/cells/sdlclkp/sky130_fd_sc_lp__sdlclkp_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__sdlclkp_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__sdlclkp_1 CLK GATE SCE VGND VNB VPB VPWR GCLK
 M1000 VGND a_737_329# a_721_133# VNB nshort w=420000u l=150000u
@@ -46,4 +61,3 @@
 M1021 a_737_329# a_623_133# VGND VNB nshort w=840000u l=150000u
 +  ad=2.394e+11p pd=2.25e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/sdlclkp/sky130_fd_sc_lp__sdlclkp_2.spice b/cells/sdlclkp/sky130_fd_sc_lp__sdlclkp_2.spice
index 8805a5e..822dc53 100644
--- a/cells/sdlclkp/sky130_fd_sc_lp__sdlclkp_2.spice
+++ b/cells/sdlclkp/sky130_fd_sc_lp__sdlclkp_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__sdlclkp_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__sdlclkp_2 CLK GATE SCE VGND VNB VPB VPWR GCLK
 M1000 VPWR a_742_107# a_1235_429# VPB phighvt w=640000u l=150000u
@@ -50,4 +65,3 @@
 M1023 VGND CLK a_250_443# VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=1.113e+11p ps=1.37e+06u
 .ends
-
diff --git a/cells/sdlclkp/sky130_fd_sc_lp__sdlclkp_4.spice b/cells/sdlclkp/sky130_fd_sc_lp__sdlclkp_4.spice
index c78a0e2..f73338f 100644
--- a/cells/sdlclkp/sky130_fd_sc_lp__sdlclkp_4.spice
+++ b/cells/sdlclkp/sky130_fd_sc_lp__sdlclkp_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__sdlclkp_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__sdlclkp_4 CLK GATE SCE VGND VNB VPB VPWR GCLK
 M1000 VPWR a_762_107# a_720_463# VPB phighvt w=420000u l=150000u
@@ -58,4 +73,3 @@
 M1027 a_335_70# a_252_361# VGND VNB nshort w=420000u l=150000u
 +  ad=1.113e+11p pd=1.37e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/sdlclkp/sky130_fd_sc_lp__sdlclkp_lp.spice b/cells/sdlclkp/sky130_fd_sc_lp__sdlclkp_lp.spice
index 59fc7fe..3bb50bc 100644
--- a/cells/sdlclkp/sky130_fd_sc_lp__sdlclkp_lp.spice
+++ b/cells/sdlclkp/sky130_fd_sc_lp__sdlclkp_lp.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__sdlclkp_lp.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__sdlclkp_lp CLK GATE SCE VGND VNB VPB VPWR GCLK
 M1000 VPWR SCE a_200_376# VPB phighvt w=1e+06u l=250000u
@@ -58,4 +73,3 @@
 M1027 a_93_376# GATE a_114_101# VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/sleep_pargate_plv/sky130_fd_sc_lp__sleep_pargate_plv_14.spice b/cells/sleep_pargate_plv/sky130_fd_sc_lp__sleep_pargate_plv_14.spice
index 2356726..fc83937 100644
--- a/cells/sleep_pargate_plv/sky130_fd_sc_lp__sleep_pargate_plv_14.spice
+++ b/cells/sleep_pargate_plv/sky130_fd_sc_lp__sleep_pargate_plv_14.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__sleep_pargate_plv_14.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__sleep_pargate_plv_14 VIRTPWR VPWR SLEEP VPB
 M1000 VIRTPWR SLEEP VPWR VPB phighvt w=7e+06u l=150000u
@@ -6,4 +21,3 @@
 M1001 VPWR SLEEP VIRTPWR VPB phighvt w=7e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/sleep_pargate_plv/sky130_fd_sc_lp__sleep_pargate_plv_21.spice b/cells/sleep_pargate_plv/sky130_fd_sc_lp__sleep_pargate_plv_21.spice
index 624e962..46b7290 100644
--- a/cells/sleep_pargate_plv/sky130_fd_sc_lp__sleep_pargate_plv_21.spice
+++ b/cells/sleep_pargate_plv/sky130_fd_sc_lp__sleep_pargate_plv_21.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__sleep_pargate_plv_21.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__sleep_pargate_plv_21 VIRTPWR VPWR SLEEP VPB
 M1000 VIRTPWR SLEEP VPWR VPB phighvt w=7e+06u l=150000u
@@ -8,4 +23,3 @@
 M1002 VPWR SLEEP VIRTPWR VPB phighvt w=7e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/sleep_pargate_plv/sky130_fd_sc_lp__sleep_pargate_plv_28.spice b/cells/sleep_pargate_plv/sky130_fd_sc_lp__sleep_pargate_plv_28.spice
index c568271..16fb122 100644
--- a/cells/sleep_pargate_plv/sky130_fd_sc_lp__sleep_pargate_plv_28.spice
+++ b/cells/sleep_pargate_plv/sky130_fd_sc_lp__sleep_pargate_plv_28.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__sleep_pargate_plv_28.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__sleep_pargate_plv_28 VIRTPWR VPWR SLEEP VPB
 M1000 VIRTPWR SLEEP VPWR VPB phighvt w=7e+06u l=150000u
@@ -10,4 +25,3 @@
 M1003 VPWR SLEEP VIRTPWR VPB phighvt w=7e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/sleep_pargate_plv/sky130_fd_sc_lp__sleep_pargate_plv_7.spice b/cells/sleep_pargate_plv/sky130_fd_sc_lp__sleep_pargate_plv_7.spice
index cd57662..fee4198 100644
--- a/cells/sleep_pargate_plv/sky130_fd_sc_lp__sleep_pargate_plv_7.spice
+++ b/cells/sleep_pargate_plv/sky130_fd_sc_lp__sleep_pargate_plv_7.spice
@@ -1,7 +1,21 @@
-* NGSPICE file created from sky130_fd_sc_lp__sleep_pargate_plv_7.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__sleep_pargate_plv_7 VIRTPWR VPWR SLEEP VPB
 M1000 VIRTPWR SLEEP VPWR VPB phighvt w=7e+06u l=150000u
 +  ad=1.855e+12p pd=1.453e+07u as=1.855e+12p ps=1.453e+07u
 .ends
-
diff --git a/cells/sleep_sergate_plv/sky130_fd_sc_lp__sleep_sergate_plv_14.spice b/cells/sleep_sergate_plv/sky130_fd_sc_lp__sleep_sergate_plv_14.spice
index fab3977..bb02100 100644
--- a/cells/sleep_sergate_plv/sky130_fd_sc_lp__sleep_sergate_plv_14.spice
+++ b/cells/sleep_sergate_plv/sky130_fd_sc_lp__sleep_sergate_plv_14.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__sleep_sergate_plv_14.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__sleep_sergate_plv_14 VIRTPWR VPWR SLEEP VPB
 M1000 VIRTPWR SLEEP VPWR VPB phighvt w=7e+06u l=150000u
@@ -6,4 +21,3 @@
 M1001 VPWR SLEEP VIRTPWR VPB phighvt w=7e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/sleep_sergate_plv/sky130_fd_sc_lp__sleep_sergate_plv_21.spice b/cells/sleep_sergate_plv/sky130_fd_sc_lp__sleep_sergate_plv_21.spice
index 7912820..d1a645a 100644
--- a/cells/sleep_sergate_plv/sky130_fd_sc_lp__sleep_sergate_plv_21.spice
+++ b/cells/sleep_sergate_plv/sky130_fd_sc_lp__sleep_sergate_plv_21.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__sleep_sergate_plv_21.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__sleep_sergate_plv_21 VIRTPWR VPWR SLEEP VPB
 M1000 VIRTPWR SLEEP VPWR VPB phighvt w=7e+06u l=150000u
@@ -8,4 +23,3 @@
 M1002 VPWR SLEEP VIRTPWR VPB phighvt w=7e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/sleep_sergate_plv/sky130_fd_sc_lp__sleep_sergate_plv_28.spice b/cells/sleep_sergate_plv/sky130_fd_sc_lp__sleep_sergate_plv_28.spice
index ec33226..38e7842 100644
--- a/cells/sleep_sergate_plv/sky130_fd_sc_lp__sleep_sergate_plv_28.spice
+++ b/cells/sleep_sergate_plv/sky130_fd_sc_lp__sleep_sergate_plv_28.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__sleep_sergate_plv_28.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__sleep_sergate_plv_28 VIRTPWR VPWR SLEEP VPB
 M1000 VIRTPWR SLEEP VPWR VPB phighvt w=7e+06u l=150000u
@@ -10,4 +25,3 @@
 M1003 VPWR SLEEP VIRTPWR VPB phighvt w=7e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/srdlrtp/sky130_fd_sc_lp__srdlrtp_1.spice b/cells/srdlrtp/sky130_fd_sc_lp__srdlrtp_1.spice
index 4fa61a8..4ffbe1f 100644
--- a/cells/srdlrtp/sky130_fd_sc_lp__srdlrtp_1.spice
+++ b/cells/srdlrtp/sky130_fd_sc_lp__srdlrtp_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__srdlrtp_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__srdlrtp_1 D GATE RESET_B SLEEP_B KAPWR VGND VNB VPB VPWR
 + Q
@@ -75,4 +90,3 @@
 M1035 KAPWR SLEEP_B a_393_335# VPB phighvt w=640000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/srdlstp/sky130_fd_sc_lp__srdlstp_1.spice b/cells/srdlstp/sky130_fd_sc_lp__srdlstp_1.spice
index 2e161bc..03a9521 100644
--- a/cells/srdlstp/sky130_fd_sc_lp__srdlstp_1.spice
+++ b/cells/srdlstp/sky130_fd_sc_lp__srdlstp_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__srdlstp_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__srdlstp_1 D GATE SET_B SLEEP_B KAPWR VGND VNB VPB VPWR Q
 M1000 KAPWR a_878_357# a_830_419# VPB phighvt w=1e+06u l=250000u
@@ -72,4 +87,3 @@
 M1034 a_434_405# a_404_353# VGND VNB nshort w=420000u l=150000u
 +  ad=1.113e+11p pd=1.37e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/srdlxtp/sky130_fd_sc_lp__srdlxtp_1.spice b/cells/srdlxtp/sky130_fd_sc_lp__srdlxtp_1.spice
index 29c1073..63cfa2a 100644
--- a/cells/srdlxtp/sky130_fd_sc_lp__srdlxtp_1.spice
+++ b/cells/srdlxtp/sky130_fd_sc_lp__srdlxtp_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__srdlxtp_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__srdlxtp_1 D GATE SLEEP_B KAPWR VGND VNB VPB VPWR Q
 M1000 VPWR a_662_47# a_1530_367# VPB phighvt w=640000u l=150000u
@@ -56,4 +71,3 @@
 M1026 a_84_153# GATE KAPWR VPB phighvt w=640000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/sregrbp/sky130_fd_sc_lp__sregrbp_1.spice b/cells/sregrbp/sky130_fd_sc_lp__sregrbp_1.spice
index 4b78c61..2022151 100644
--- a/cells/sregrbp/sky130_fd_sc_lp__sregrbp_1.spice
+++ b/cells/sregrbp/sky130_fd_sc_lp__sregrbp_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__sregrbp_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__sregrbp_1 ASYNC CLK D SCD SCE VGND VNB VPB VPWR Q Q_N
 M1000 a_264_531# SCE VPWR VPB phighvt w=420000u l=150000u
@@ -90,4 +105,3 @@
 M1043 a_934_357# a_761_357# VGND VNB nshort w=840000u l=150000u
 +  ad=2.394e+11p pd=2.25e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/sregsbp/sky130_fd_sc_lp__sregsbp_1.spice b/cells/sregsbp/sky130_fd_sc_lp__sregsbp_1.spice
index 55092af..493a7ed 100644
--- a/cells/sregsbp/sky130_fd_sc_lp__sregsbp_1.spice
+++ b/cells/sregsbp/sky130_fd_sc_lp__sregsbp_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__sregsbp_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__sregsbp_1 ASYNC CLK D SCD SCE VGND VNB VPB VPWR Q Q_N
 M1000 a_264_531# SCE VPWR VPB phighvt w=420000u l=150000u
@@ -90,4 +105,3 @@
 M1043 a_934_357# a_761_357# VGND VNB nshort w=840000u l=150000u
 +  ad=2.394e+11p pd=2.25e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/srsdfrtn/sky130_fd_sc_lp__srsdfrtn_1.spice b/cells/srsdfrtn/sky130_fd_sc_lp__srsdfrtn_1.spice
index 9fc5abb..f567dbb 100644
--- a/cells/srsdfrtn/sky130_fd_sc_lp__srsdfrtn_1.spice
+++ b/cells/srsdfrtn/sky130_fd_sc_lp__srsdfrtn_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__srsdfrtn_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__srsdfrtn_1 CLK_N D RESET_B SCD SCE SLEEP_B KAPWR VGND VNB
 + VPB VPWR Q
@@ -111,4 +126,3 @@
 M1053 a_1242_419# a_666_89# a_1113_419# VPB phighvt w=1e+06u l=250000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/srsdfrtp/sky130_fd_sc_lp__srsdfrtp_1.spice b/cells/srsdfrtp/sky130_fd_sc_lp__srsdfrtp_1.spice
index 4a67fc8..aac9636 100644
--- a/cells/srsdfrtp/sky130_fd_sc_lp__srsdfrtp_1.spice
+++ b/cells/srsdfrtp/sky130_fd_sc_lp__srsdfrtp_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__srsdfrtp_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__srsdfrtp_1 CLK D RESET_B SCD SCE SLEEP_B KAPWR VGND VNB VPB
 + VPWR Q
@@ -107,4 +122,3 @@
 M1051 VPWR a_1982_397# a_3751_367# VPB phighvt w=640000u l=150000u
 +  ad=0p pd=0u as=1.824e+11p ps=1.85e+06u
 .ends
-
diff --git a/cells/srsdfstp/sky130_fd_sc_lp__srsdfstp_1.spice b/cells/srsdfstp/sky130_fd_sc_lp__srsdfstp_1.spice
index 4b01d5c..b0c34d5 100644
--- a/cells/srsdfstp/sky130_fd_sc_lp__srsdfstp_1.spice
+++ b/cells/srsdfstp/sky130_fd_sc_lp__srsdfstp_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__srsdfstp_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__srsdfstp_1 CLK D SCD SCE SET_B SLEEP_B KAPWR VGND VNB VPB
 + VPWR Q
@@ -107,4 +122,3 @@
 M1051 a_2463_119# a_1728_125# VGND VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/srsdfxtp/sky130_fd_sc_lp__srsdfxtp_1.spice b/cells/srsdfxtp/sky130_fd_sc_lp__srsdfxtp_1.spice
index 0d391f4..bf15bed 100644
--- a/cells/srsdfxtp/sky130_fd_sc_lp__srsdfxtp_1.spice
+++ b/cells/srsdfxtp/sky130_fd_sc_lp__srsdfxtp_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__srsdfxtp_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__srsdfxtp_1 CLK D SCD SCE SLEEP_B KAPWR VGND VNB VPB VPWR
 + Q
@@ -85,4 +100,3 @@
 M1040 VGND SCE a_31_477# VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=1.197e+11p ps=1.41e+06u
 .ends
-
diff --git a/cells/tap/sky130_fd_sc_lp__tap_1.spice b/cells/tap/sky130_fd_sc_lp__tap_1.spice
index 60113f7..1b1fbe5 100644
--- a/cells/tap/sky130_fd_sc_lp__tap_1.spice
+++ b/cells/tap/sky130_fd_sc_lp__tap_1.spice
@@ -1,5 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__tap_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__tap_1 VGND VNB VPB VPWR
 .ends
-
diff --git a/cells/tap/sky130_fd_sc_lp__tap_2.spice b/cells/tap/sky130_fd_sc_lp__tap_2.spice
index fd480bb..ff8db90 100644
--- a/cells/tap/sky130_fd_sc_lp__tap_2.spice
+++ b/cells/tap/sky130_fd_sc_lp__tap_2.spice
@@ -1,5 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__tap_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__tap_2 VGND VNB VPB VPWR
 .ends
-
diff --git a/cells/tapvgnd/sky130_fd_sc_lp__tapvgnd_1.spice b/cells/tapvgnd/sky130_fd_sc_lp__tapvgnd_1.spice
index 7d1a981..8869c87 100644
--- a/cells/tapvgnd/sky130_fd_sc_lp__tapvgnd_1.spice
+++ b/cells/tapvgnd/sky130_fd_sc_lp__tapvgnd_1.spice
@@ -1,5 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__tapvgnd_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__tapvgnd_1 VGND VPB VPWR
 .ends
-
diff --git a/cells/tapvgnd2/sky130_fd_sc_lp__tapvgnd2_1.spice b/cells/tapvgnd2/sky130_fd_sc_lp__tapvgnd2_1.spice
index bcd5e2e..625039c 100644
--- a/cells/tapvgnd2/sky130_fd_sc_lp__tapvgnd2_1.spice
+++ b/cells/tapvgnd2/sky130_fd_sc_lp__tapvgnd2_1.spice
@@ -1,5 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__tapvgnd2_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__tapvgnd2_1 VGND VPB VPWR
 .ends
-
diff --git a/cells/tapvpwrvgnd/sky130_fd_sc_lp__tapvpwrvgnd_1.spice b/cells/tapvpwrvgnd/sky130_fd_sc_lp__tapvpwrvgnd_1.spice
index 8416b01..8e64de0 100644
--- a/cells/tapvpwrvgnd/sky130_fd_sc_lp__tapvpwrvgnd_1.spice
+++ b/cells/tapvpwrvgnd/sky130_fd_sc_lp__tapvpwrvgnd_1.spice
@@ -1,5 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__tapvpwrvgnd_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__tapvpwrvgnd_1 VGND VPWR
 .ends
-
diff --git a/cells/xnor2/sky130_fd_sc_lp__xnor2_0.spice b/cells/xnor2/sky130_fd_sc_lp__xnor2_0.spice
index 3249889..c7b3115 100644
--- a/cells/xnor2/sky130_fd_sc_lp__xnor2_0.spice
+++ b/cells/xnor2/sky130_fd_sc_lp__xnor2_0.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__xnor2_0.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__xnor2_0 A B VGND VNB VPB VPWR Y
 M1000 a_143_487# A VPWR VPB phighvt w=640000u l=150000u
@@ -22,4 +37,3 @@
 M1009 a_300_60# B VGND VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/xnor2/sky130_fd_sc_lp__xnor2_1.spice b/cells/xnor2/sky130_fd_sc_lp__xnor2_1.spice
index 2906c4a..3410bce 100644
--- a/cells/xnor2/sky130_fd_sc_lp__xnor2_1.spice
+++ b/cells/xnor2/sky130_fd_sc_lp__xnor2_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__xnor2_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__xnor2_1 A B VGND VNB VPB VPWR Y
 M1000 a_302_47# B VGND VNB nshort w=840000u l=150000u
@@ -22,4 +37,3 @@
 M1009 VGND A a_302_47# VNB nshort w=840000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/xnor2/sky130_fd_sc_lp__xnor2_2.spice b/cells/xnor2/sky130_fd_sc_lp__xnor2_2.spice
index dca9a19..f6a53a7 100644
--- a/cells/xnor2/sky130_fd_sc_lp__xnor2_2.spice
+++ b/cells/xnor2/sky130_fd_sc_lp__xnor2_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__xnor2_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__xnor2_2 A B VGND VNB VPB VPWR Y
 M1000 VPWR A a_545_367# VPB phighvt w=1.26e+06u l=150000u
@@ -42,4 +57,3 @@
 M1019 a_162_367# A VPWR VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/xnor2/sky130_fd_sc_lp__xnor2_4.spice b/cells/xnor2/sky130_fd_sc_lp__xnor2_4.spice
index dacc0cf..3d30d2b 100644
--- a/cells/xnor2/sky130_fd_sc_lp__xnor2_4.spice
+++ b/cells/xnor2/sky130_fd_sc_lp__xnor2_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__xnor2_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__xnor2_4 A B VGND VNB VPB VPWR Y
 M1000 a_31_65# B VGND VNB nshort w=840000u l=150000u
@@ -82,4 +97,3 @@
 M1039 VPWR A a_808_39# VPB phighvt w=1.26e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/xnor2/sky130_fd_sc_lp__xnor2_lp.spice b/cells/xnor2/sky130_fd_sc_lp__xnor2_lp.spice
index b4f7b65..256dea6 100644
--- a/cells/xnor2/sky130_fd_sc_lp__xnor2_lp.spice
+++ b/cells/xnor2/sky130_fd_sc_lp__xnor2_lp.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__xnor2_lp.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__xnor2_lp A B VGND VNB VPB VPWR Y
 M1000 Y a_82_66# VPWR VPB phighvt w=1e+06u l=250000u
@@ -22,4 +37,3 @@
 M1009 a_112_92# a_82_66# Y VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=1.155e+11p ps=1.39e+06u
 .ends
-
diff --git a/cells/xnor2/sky130_fd_sc_lp__xnor2_m.spice b/cells/xnor2/sky130_fd_sc_lp__xnor2_m.spice
index c4be463..f96259b 100644
--- a/cells/xnor2/sky130_fd_sc_lp__xnor2_m.spice
+++ b/cells/xnor2/sky130_fd_sc_lp__xnor2_m.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__xnor2_m.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__xnor2_m A B VGND VNB VPB VPWR Y
 M1000 a_56_90# B VPWR VPB phighvt w=420000u l=150000u
@@ -22,4 +37,3 @@
 M1009 Y B a_311_422# VPB phighvt w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/xnor3/sky130_fd_sc_lp__xnor3_1.spice b/cells/xnor3/sky130_fd_sc_lp__xnor3_1.spice
index af9de87..b40cf8a 100644
--- a/cells/xnor3/sky130_fd_sc_lp__xnor3_1.spice
+++ b/cells/xnor3/sky130_fd_sc_lp__xnor3_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__xnor3_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__xnor3_1 A B C VGND VNB VPB VPWR X
 M1000 a_354_109# a_754_367# a_871_373# VNB nshort w=640000u l=150000u
@@ -46,4 +61,3 @@
 M1021 a_754_367# B VPWR VPB phighvt w=1.26e+06u l=150000u
 +  ad=3.591e+11p pd=3.09e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/xnor3/sky130_fd_sc_lp__xnor3_lp.spice b/cells/xnor3/sky130_fd_sc_lp__xnor3_lp.spice
index 05dee63..cf568d8 100644
--- a/cells/xnor3/sky130_fd_sc_lp__xnor3_lp.spice
+++ b/cells/xnor3/sky130_fd_sc_lp__xnor3_lp.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__xnor3_lp.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__xnor3_lp A B C VGND VNB VPB VPWR X
 M1000 VPWR C a_1318_85# VPB phighvt w=1e+06u l=250000u
@@ -56,4 +71,3 @@
 M1026 a_763_347# B a_265_409# VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/xor2/sky130_fd_sc_lp__xor2_0.spice b/cells/xor2/sky130_fd_sc_lp__xor2_0.spice
index 5bf88a0..92c0520 100644
--- a/cells/xor2/sky130_fd_sc_lp__xor2_0.spice
+++ b/cells/xor2/sky130_fd_sc_lp__xor2_0.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__xor2_0.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__xor2_0 A B VGND VNB VPB VPWR X
 M1000 a_274_481# A VPWR VPB phighvt w=640000u l=150000u
@@ -22,4 +37,3 @@
 M1009 a_27_481# B VGND VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/xor2/sky130_fd_sc_lp__xor2_1.spice b/cells/xor2/sky130_fd_sc_lp__xor2_1.spice
index 1598804..9d36921 100644
--- a/cells/xor2/sky130_fd_sc_lp__xor2_1.spice
+++ b/cells/xor2/sky130_fd_sc_lp__xor2_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__xor2_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__xor2_1 A B VGND VNB VPB VPWR X
 M1000 VGND a_42_367# X VNB nshort w=840000u l=150000u
@@ -22,4 +37,3 @@
 M1009 VGND A a_42_367# VNB nshort w=840000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/xor2/sky130_fd_sc_lp__xor2_2.spice b/cells/xor2/sky130_fd_sc_lp__xor2_2.spice
index d5e2418..1818ffe 100644
--- a/cells/xor2/sky130_fd_sc_lp__xor2_2.spice
+++ b/cells/xor2/sky130_fd_sc_lp__xor2_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__xor2_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__xor2_2 A B VGND VNB VPB VPWR X
 M1000 a_149_367# B a_149_65# VPB phighvt w=1.26e+06u l=150000u
@@ -42,4 +57,3 @@
 M1019 X a_149_65# VGND VNB nshort w=840000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/xor2/sky130_fd_sc_lp__xor2_4.spice b/cells/xor2/sky130_fd_sc_lp__xor2_4.spice
index 1ffdaa3..24e8bad 100644
--- a/cells/xor2/sky130_fd_sc_lp__xor2_4.spice
+++ b/cells/xor2/sky130_fd_sc_lp__xor2_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__xor2_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__xor2_4 A B VGND VNB VPB VPWR X
 M1000 VPWR A a_27_367# VPB phighvt w=1.26e+06u l=150000u
@@ -82,4 +97,3 @@
 M1039 a_110_47# A VGND VNB nshort w=840000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/xor2/sky130_fd_sc_lp__xor2_lp.spice b/cells/xor2/sky130_fd_sc_lp__xor2_lp.spice
index ac1d9e9..58b078a 100644
--- a/cells/xor2/sky130_fd_sc_lp__xor2_lp.spice
+++ b/cells/xor2/sky130_fd_sc_lp__xor2_lp.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__xor2_lp.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__xor2_lp A B VGND VNB VPB VPWR X
 M1000 a_272_119# B X VNB nshort w=420000u l=150000u
@@ -28,4 +43,3 @@
 M1012 X a_84_93# a_114_119# VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/xor2/sky130_fd_sc_lp__xor2_m.spice b/cells/xor2/sky130_fd_sc_lp__xor2_m.spice
index 91d6919..1b44641 100644
--- a/cells/xor2/sky130_fd_sc_lp__xor2_m.spice
+++ b/cells/xor2/sky130_fd_sc_lp__xor2_m.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__xor2_m.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__xor2_m A B VGND VNB VPB VPWR X
 M1000 a_41_535# B VGND VNB nshort w=420000u l=150000u
@@ -22,4 +37,3 @@
 M1009 VGND A a_41_535# VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/xor3/sky130_fd_sc_lp__xor3_1.spice b/cells/xor3/sky130_fd_sc_lp__xor3_1.spice
index 54d8a56..e401d69 100644
--- a/cells/xor3/sky130_fd_sc_lp__xor3_1.spice
+++ b/cells/xor3/sky130_fd_sc_lp__xor3_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__xor3_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__xor3_1 A B C VGND VNB VPB VPWR X
 M1000 VPWR a_86_305# a_42_411# VPB phighvt w=1e+06u l=150000u
@@ -46,4 +61,3 @@
 M1021 a_86_305# a_474_313# a_402_411# VNB nshort w=640000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/xor3/sky130_fd_sc_lp__xor3_lp.spice b/cells/xor3/sky130_fd_sc_lp__xor3_lp.spice
index 7c3f48f..8614d67 100644
--- a/cells/xor3/sky130_fd_sc_lp__xor3_lp.spice
+++ b/cells/xor3/sky130_fd_sc_lp__xor3_lp.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_lp__xor3_lp.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_lp__xor3_lp A B C VGND VNB VPB VPWR X
 M1000 a_430_113# a_57_113# VGND VNB nshort w=420000u l=150000u
@@ -56,4 +71,3 @@
 M1026 VPWR C a_1393_300# VPB phighvt w=1e+06u l=250000u
 +  ad=0p pd=0u as=2.85e+11p ps=2.57e+06u
 .ends
-