diff --git a/cells/a2111o/sky130_fd_sc_ls__a2111o_1.spice b/cells/a2111o/sky130_fd_sc_ls__a2111o_1.spice
index 5e007eb..ad274f5 100644
--- a/cells/a2111o/sky130_fd_sc_ls__a2111o_1.spice
+++ b/cells/a2111o/sky130_fd_sc_ls__a2111o_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__a2111o_1 A1 A2 B1 C1 D1 VGND VNB VPB VPWR X
 M1000 a_85_136# D1 a_431_392# VPB phighvt w=1e+06u l=150000u
@@ -26,4 +41,3 @@
 M1011 X a_85_136# VPWR VPB phighvt w=1.12e+06u l=150000u
 +  ad=3.08e+11p pd=2.79e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/a2111o/sky130_fd_sc_ls__a2111o_2.spice b/cells/a2111o/sky130_fd_sc_ls__a2111o_2.spice
index a358dc2..fb96d18 100644
--- a/cells/a2111o/sky130_fd_sc_ls__a2111o_2.spice
+++ b/cells/a2111o/sky130_fd_sc_ls__a2111o_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__a2111o_2 A1 A2 B1 C1 D1 VGND VNB VPB VPWR X
 M1000 a_630_368# A1 VPWR VPB phighvt w=1.12e+06u l=150000u
@@ -30,4 +45,3 @@
 M1013 VGND D1 a_91_244# VNB nshort w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a2111o/sky130_fd_sc_ls__a2111o_4.spice b/cells/a2111o/sky130_fd_sc_ls__a2111o_4.spice
index 5971646..d0c40df 100644
--- a/cells/a2111o/sky130_fd_sc_ls__a2111o_4.spice
+++ b/cells/a2111o/sky130_fd_sc_ls__a2111o_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__a2111o_4 A1 A2 B1 C1 D1 VGND VNB VPB VPWR X
 M1000 a_137_260# D1 a_549_392# VPB phighvt w=1e+06u l=150000u
@@ -58,4 +73,3 @@
 M1027 a_137_260# A1 a_1210_74# VNB nshort w=640000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a2111oi/sky130_fd_sc_ls__a2111oi_1.spice b/cells/a2111oi/sky130_fd_sc_ls__a2111oi_1.spice
index bfe61d2..8f90caa 100644
--- a/cells/a2111oi/sky130_fd_sc_ls__a2111oi_1.spice
+++ b/cells/a2111oi/sky130_fd_sc_ls__a2111oi_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__a2111oi_1 A1 A2 B1 C1 D1 VGND VNB VPB VPWR Y
 M1000 a_234_368# C1 a_156_368# VPB phighvt w=1.12e+06u l=150000u
@@ -22,4 +37,3 @@
 M1009 VPWR A1 a_342_368# VPB phighvt w=1.12e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a2111oi/sky130_fd_sc_ls__a2111oi_2.spice b/cells/a2111oi/sky130_fd_sc_ls__a2111oi_2.spice
index cfe7e88..b5f4869 100644
--- a/cells/a2111oi/sky130_fd_sc_ls__a2111oi_2.spice
+++ b/cells/a2111oi/sky130_fd_sc_ls__a2111oi_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__a2111oi_2 A1 A2 B1 C1 D1 VGND VNB VPB VPWR Y
 M1000 VGND C1 Y VNB nshort w=740000u l=150000u
@@ -36,4 +51,3 @@
 M1016 Y D1 a_69_368# VPB phighvt w=1.12e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a2111oi/sky130_fd_sc_ls__a2111oi_4.spice b/cells/a2111oi/sky130_fd_sc_ls__a2111oi_4.spice
index 5662d03..677dac5 100644
--- a/cells/a2111oi/sky130_fd_sc_ls__a2111oi_4.spice
+++ b/cells/a2111oi/sky130_fd_sc_ls__a2111oi_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__a2111oi_4 A1 A2 B1 C1 D1 VGND VNB VPB VPWR Y
 M1000 Y D1 a_29_368# VPB phighvt w=1.12e+06u l=150000u
@@ -70,4 +85,3 @@
 M1033 VPWR A2 a_853_368# VPB phighvt w=1.12e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a211o/sky130_fd_sc_ls__a211o_1.spice b/cells/a211o/sky130_fd_sc_ls__a211o_1.spice
index aed6a6d..6b3cb62 100644
--- a/cells/a211o/sky130_fd_sc_ls__a211o_1.spice
+++ b/cells/a211o/sky130_fd_sc_ls__a211o_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__a211o_1 A1 A2 B1 C1 VGND VNB VPB VPWR X
 M1000 a_279_392# A1 VPWR VPB phighvt w=1e+06u l=150000u
@@ -22,4 +37,3 @@
 M1009 VPWR a_81_264# X VPB phighvt w=1.12e+06u l=150000u
 +  ad=0p pd=0u as=3.08e+11p ps=2.79e+06u
 .ends
-
diff --git a/cells/a211o/sky130_fd_sc_ls__a211o_2.spice b/cells/a211o/sky130_fd_sc_ls__a211o_2.spice
index 1ee4e13..7855a54 100644
--- a/cells/a211o/sky130_fd_sc_ls__a211o_2.spice
+++ b/cells/a211o/sky130_fd_sc_ls__a211o_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__a211o_2 A1 A2 B1 C1 VGND VNB VPB VPWR X
 M1000 a_85_270# C1 a_600_392# VPB phighvt w=1e+06u l=150000u
@@ -26,4 +41,3 @@
 M1011 a_85_270# A1 a_399_74# VNB nshort w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a211o/sky130_fd_sc_ls__a211o_4.spice b/cells/a211o/sky130_fd_sc_ls__a211o_4.spice
index f6eb021..27ab174 100644
--- a/cells/a211o/sky130_fd_sc_ls__a211o_4.spice
+++ b/cells/a211o/sky130_fd_sc_ls__a211o_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__a211o_4 A1 A2 B1 C1 VGND VNB VPB VPWR X
 M1000 a_1064_123# A2 VGND VNB nshort w=640000u l=150000u
@@ -50,4 +65,3 @@
 M1023 a_602_392# B1 a_517_392# VPB phighvt w=1e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a211oi/sky130_fd_sc_ls__a211oi_1.spice b/cells/a211oi/sky130_fd_sc_ls__a211oi_1.spice
index a5b3d6d..7ec2f24 100644
--- a/cells/a211oi/sky130_fd_sc_ls__a211oi_1.spice
+++ b/cells/a211oi/sky130_fd_sc_ls__a211oi_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__a211oi_1 A1 A2 B1 C1 VGND VNB VPB VPWR Y
 M1000 a_71_368# A1 VPWR VPB phighvt w=1.12e+06u l=150000u
@@ -18,4 +33,3 @@
 M1007 Y C1 VGND VNB nshort w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a211oi/sky130_fd_sc_ls__a211oi_2.spice b/cells/a211oi/sky130_fd_sc_ls__a211oi_2.spice
index a5ceb12..dd224a2 100644
--- a/cells/a211oi/sky130_fd_sc_ls__a211oi_2.spice
+++ b/cells/a211oi/sky130_fd_sc_ls__a211oi_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__a211oi_2 A1 A2 B1 C1 VGND VNB VPB VPWR Y
 M1000 a_114_368# A2 VPWR VPB phighvt w=1.12e+06u l=150000u
@@ -30,4 +45,3 @@
 M1013 Y C1 a_497_368# VPB phighvt w=1.12e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a211oi/sky130_fd_sc_ls__a211oi_4.spice b/cells/a211oi/sky130_fd_sc_ls__a211oi_4.spice
index 8548b62..f001029 100644
--- a/cells/a211oi/sky130_fd_sc_ls__a211oi_4.spice
+++ b/cells/a211oi/sky130_fd_sc_ls__a211oi_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__a211oi_4 A1 A2 B1 C1 VGND VNB VPB VPWR Y
 M1000 Y C1 a_901_368# VPB phighvt w=1.12e+06u l=150000u
@@ -58,4 +73,3 @@
 M1027 VGND A2 a_92_74# VNB nshort w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a21bo/sky130_fd_sc_ls__a21bo_1.spice b/cells/a21bo/sky130_fd_sc_ls__a21bo_1.spice
index 6f4d18f..08804aa 100644
--- a/cells/a21bo/sky130_fd_sc_ls__a21bo_1.spice
+++ b/cells/a21bo/sky130_fd_sc_ls__a21bo_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__a21bo_1 A1 A2 B1_N VGND VNB VPB VPWR X
 M1000 a_194_136# a_272_110# a_34_392# VPB phighvt w=1e+06u l=150000u
@@ -22,4 +37,3 @@
 M1009 X a_194_136# VPWR VPB phighvt w=1.12e+06u l=150000u
 +  ad=3.08e+11p pd=2.79e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/a21bo/sky130_fd_sc_ls__a21bo_2.spice b/cells/a21bo/sky130_fd_sc_ls__a21bo_2.spice
index d7aaa5b..201b1a5 100644
--- a/cells/a21bo/sky130_fd_sc_ls__a21bo_2.spice
+++ b/cells/a21bo/sky130_fd_sc_ls__a21bo_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__a21bo_2 A1 A2 B1_N VGND VNB VPB VPWR X
 M1000 a_504_392# A2 VPWR VPB phighvt w=1e+06u l=150000u
@@ -26,4 +41,3 @@
 M1011 VGND a_187_244# X VNB nshort w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a21bo/sky130_fd_sc_ls__a21bo_4.spice b/cells/a21bo/sky130_fd_sc_ls__a21bo_4.spice
index d161835..d03f3ea 100644
--- a/cells/a21bo/sky130_fd_sc_ls__a21bo_4.spice
+++ b/cells/a21bo/sky130_fd_sc_ls__a21bo_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__a21bo_4 A1 A2 B1_N VGND VNB VPB VPWR X
 M1000 X a_187_338# VGND VNB nshort w=740000u l=150000u
@@ -46,4 +61,3 @@
 M1021 a_596_392# A1 VPWR VPB phighvt w=1e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a21boi/sky130_fd_sc_ls__a21boi_1.spice b/cells/a21boi/sky130_fd_sc_ls__a21boi_1.spice
index 661260f..4c8b592 100644
--- a/cells/a21boi/sky130_fd_sc_ls__a21boi_1.spice
+++ b/cells/a21boi/sky130_fd_sc_ls__a21boi_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__a21boi_1 A1 A2 B1_N VGND VNB VPB VPWR Y
 M1000 a_437_74# A1 Y VNB nshort w=740000u l=150000u
@@ -18,4 +33,3 @@
 M1007 a_348_368# a_29_424# Y VPB phighvt w=1.12e+06u l=150000u
 +  ad=0p pd=0u as=3.08e+11p ps=2.79e+06u
 .ends
-
diff --git a/cells/a21boi/sky130_fd_sc_ls__a21boi_2.spice b/cells/a21boi/sky130_fd_sc_ls__a21boi_2.spice
index 8b56859..499dda2 100644
--- a/cells/a21boi/sky130_fd_sc_ls__a21boi_2.spice
+++ b/cells/a21boi/sky130_fd_sc_ls__a21boi_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__a21boi_2 A1 A2 B1_N VGND VNB VPB VPWR Y
 M1000 VGND B1_N a_62_94# VNB nshort w=640000u l=150000u
@@ -30,4 +45,3 @@
 M1013 a_241_368# a_62_94# Y VPB phighvt w=1.12e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a21boi/sky130_fd_sc_ls__a21boi_4.spice b/cells/a21boi/sky130_fd_sc_ls__a21boi_4.spice
index 1d4b8cc..e0f6ec6 100644
--- a/cells/a21boi/sky130_fd_sc_ls__a21boi_4.spice
+++ b/cells/a21boi/sky130_fd_sc_ls__a21boi_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__a21boi_4 A1 A2 B1_N VGND VNB VPB VPWR Y
 M1000 a_46_74# A1 Y VNB nshort w=740000u l=150000u
@@ -56,4 +71,3 @@
 M1026 a_46_74# A2 VGND VNB nshort w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a21o/sky130_fd_sc_ls__a21o_1.spice b/cells/a21o/sky130_fd_sc_ls__a21o_1.spice
index ccf8fe0..cb8c200 100644
--- a/cells/a21o/sky130_fd_sc_ls__a21o_1.spice
+++ b/cells/a21o/sky130_fd_sc_ls__a21o_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__a21o_1 A1 A2 B1 VGND VNB VPB VPWR X
 M1000 a_364_392# A2 VPWR VPB phighvt w=1e+06u l=150000u
@@ -18,4 +33,3 @@
 M1007 VPWR a_81_264# X VPB phighvt w=1.12e+06u l=150000u
 +  ad=0p pd=0u as=3.08e+11p ps=2.79e+06u
 .ends
-
diff --git a/cells/a21o/sky130_fd_sc_ls__a21o_2.spice b/cells/a21o/sky130_fd_sc_ls__a21o_2.spice
index 2494dfa..253eb91 100644
--- a/cells/a21o/sky130_fd_sc_ls__a21o_2.spice
+++ b/cells/a21o/sky130_fd_sc_ls__a21o_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__a21o_2 A1 A2 B1 VGND VNB VPB VPWR X
 M1000 X a_84_244# VGND VNB nshort w=740000u l=150000u
@@ -22,4 +37,3 @@
 M1009 VPWR A1 a_401_392# VPB phighvt w=1e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a21o/sky130_fd_sc_ls__a21o_4.spice b/cells/a21o/sky130_fd_sc_ls__a21o_4.spice
index d9efa1d..2d84097 100644
--- a/cells/a21o/sky130_fd_sc_ls__a21o_4.spice
+++ b/cells/a21o/sky130_fd_sc_ls__a21o_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__a21o_4 A1 A2 B1 VGND VNB VPB VPWR X
 M1000 X a_91_48# VGND VNB nshort w=740000u l=150000u
@@ -42,4 +57,3 @@
 M1019 X a_91_48# VPWR VPB phighvt w=1.12e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a21oi/sky130_fd_sc_ls__a21oi_1.spice b/cells/a21oi/sky130_fd_sc_ls__a21oi_1.spice
index 2f8c6d9..ca281df 100644
--- a/cells/a21oi/sky130_fd_sc_ls__a21oi_1.spice
+++ b/cells/a21oi/sky130_fd_sc_ls__a21oi_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__a21oi_1 A1 A2 B1 VGND VNB VPB VPWR Y
 M1000 a_29_368# A1 VPWR VPB phighvt w=1.12e+06u l=150000u
@@ -14,4 +29,3 @@
 M1005 a_117_74# A2 VGND VNB nshort w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a21oi/sky130_fd_sc_ls__a21oi_2.spice b/cells/a21oi/sky130_fd_sc_ls__a21oi_2.spice
index 64bfc29..82b193d 100644
--- a/cells/a21oi/sky130_fd_sc_ls__a21oi_2.spice
+++ b/cells/a21oi/sky130_fd_sc_ls__a21oi_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__a21oi_2 A1 A2 B1 VGND VNB VPB VPWR Y
 M1000 VPWR A2 a_131_368# VPB phighvt w=1.12e+06u l=150000u
@@ -24,4 +39,3 @@
 M1010 a_280_107# A1 Y VNB nshort w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a21oi/sky130_fd_sc_ls__a21oi_4.spice b/cells/a21oi/sky130_fd_sc_ls__a21oi_4.spice
index 12fd5da..23ddfa3 100644
--- a/cells/a21oi/sky130_fd_sc_ls__a21oi_4.spice
+++ b/cells/a21oi/sky130_fd_sc_ls__a21oi_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__a21oi_4 A1 A2 B1 VGND VNB VPB VPWR Y
 M1000 a_69_368# A1 VPWR VPB phighvt w=1.12e+06u l=150000u
@@ -46,4 +61,3 @@
 M1021 Y A1 a_84_74# VNB nshort w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a221o/sky130_fd_sc_ls__a221o_1.spice b/cells/a221o/sky130_fd_sc_ls__a221o_1.spice
index 08ab4f7..fd8641d 100644
--- a/cells/a221o/sky130_fd_sc_ls__a221o_1.spice
+++ b/cells/a221o/sky130_fd_sc_ls__a221o_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__a221o_1 A1 A2 B1 B2 C1 VGND VNB VPB VPWR X
 M1000 a_509_392# B2 a_310_392# VPB phighvt w=1e+06u l=150000u
@@ -26,4 +41,3 @@
 M1011 a_310_392# B1 a_509_392# VPB phighvt w=1e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a221o/sky130_fd_sc_ls__a221o_2.spice b/cells/a221o/sky130_fd_sc_ls__a221o_2.spice
index 5cc4194..14e3488 100644
--- a/cells/a221o/sky130_fd_sc_ls__a221o_2.spice
+++ b/cells/a221o/sky130_fd_sc_ls__a221o_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__a221o_2 A1 A2 B1 B2 C1 VGND VNB VPB VPWR X
 M1000 a_316_392# B1 a_515_392# VPB phighvt w=1e+06u l=150000u
@@ -30,4 +45,3 @@
 M1013 VGND a_89_260# X VNB nshort w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a221o/sky130_fd_sc_ls__a221o_4.spice b/cells/a221o/sky130_fd_sc_ls__a221o_4.spice
index 6777913..5ae76d1 100644
--- a/cells/a221o/sky130_fd_sc_ls__a221o_4.spice
+++ b/cells/a221o/sky130_fd_sc_ls__a221o_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__a221o_4 A1 A2 B1 B2 C1 VGND VNB VPB VPWR X
 M1000 a_157_376# A1 VPWR VPB phighvt w=1e+06u l=150000u
@@ -58,4 +73,3 @@
 M1027 a_1102_392# B1 a_157_376# VPB phighvt w=1e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a221oi/sky130_fd_sc_ls__a221oi_1.spice b/cells/a221oi/sky130_fd_sc_ls__a221oi_1.spice
index 15c7241..27210c0 100644
--- a/cells/a221oi/sky130_fd_sc_ls__a221oi_1.spice
+++ b/cells/a221oi/sky130_fd_sc_ls__a221oi_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__a221oi_1 A1 A2 B1 B2 C1 VGND VNB VPB VPWR Y
 M1000 a_263_368# A2 VPWR VPB phighvt w=1.12e+06u l=150000u
@@ -22,4 +37,3 @@
 M1009 a_118_368# B2 a_263_368# VPB phighvt w=1.12e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a221oi/sky130_fd_sc_ls__a221oi_2.spice b/cells/a221oi/sky130_fd_sc_ls__a221oi_2.spice
index ab9f0a2..aec7efd 100644
--- a/cells/a221oi/sky130_fd_sc_ls__a221oi_2.spice
+++ b/cells/a221oi/sky130_fd_sc_ls__a221oi_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__a221oi_2 A1 A2 B1 B2 C1 VGND VNB VPB VPWR Y
 M1000 a_294_368# B1 a_29_368# VPB phighvt w=1.12e+06u l=150000u
@@ -42,4 +57,3 @@
 M1019 VGND C1 Y VNB nshort w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a221oi/sky130_fd_sc_ls__a221oi_4.spice b/cells/a221oi/sky130_fd_sc_ls__a221oi_4.spice
index e2fca35..4e9a3fc 100644
--- a/cells/a221oi/sky130_fd_sc_ls__a221oi_4.spice
+++ b/cells/a221oi/sky130_fd_sc_ls__a221oi_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__a221oi_4 A1 A2 B1 B2 C1 VGND VNB VPB VPWR Y
 M1000 a_114_368# C1 Y VPB phighvt w=1.12e+06u l=150000u
@@ -82,4 +97,3 @@
 M1039 VGND C1 Y VNB nshort w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a222o/sky130_fd_sc_ls__a222o_1.spice b/cells/a222o/sky130_fd_sc_ls__a222o_1.spice
index b684a73..d14ef45 100644
--- a/cells/a222o/sky130_fd_sc_ls__a222o_1.spice
+++ b/cells/a222o/sky130_fd_sc_ls__a222o_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__a222o_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_ls__a222o_1 A1 A2 B1 B2 C1 C2 VGND VNB VPB VPWR X
 M1000 X a_32_74# VGND VNB nshort w=740000u l=150000u
@@ -30,4 +45,3 @@
 M1013 VGND C2 a_119_74# VNB nshort w=640000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a222o/sky130_fd_sc_ls__a222o_2.spice b/cells/a222o/sky130_fd_sc_ls__a222o_2.spice
index 0018aae..b43cf5b 100644
--- a/cells/a222o/sky130_fd_sc_ls__a222o_2.spice
+++ b/cells/a222o/sky130_fd_sc_ls__a222o_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__a222o_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_ls__a222o_2 A1 A2 B1 B2 C1 C2 VGND VNB VPB VPWR X
 M1000 X a_27_82# VPWR VPB phighvt w=1.12e+06u l=150000u
@@ -34,4 +49,3 @@
 M1015 a_557_74# A2 VGND VNB nshort w=640000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a222oi/sky130_fd_sc_ls__a222oi_1.spice b/cells/a222oi/sky130_fd_sc_ls__a222oi_1.spice
index 2948ea5..fbc1577 100644
--- a/cells/a222oi/sky130_fd_sc_ls__a222oi_1.spice
+++ b/cells/a222oi/sky130_fd_sc_ls__a222oi_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__a222oi_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_ls__a222oi_1 A1 A2 B1 B2 C1 C2 VGND VNB VPB VPWR Y
 M1000 a_461_74# B2 VGND VNB nshort w=640000u l=150000u
@@ -26,4 +41,3 @@
 M1011 VGND C2 a_119_74# VNB nshort w=640000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a222oi/sky130_fd_sc_ls__a222oi_2.spice b/cells/a222oi/sky130_fd_sc_ls__a222oi_2.spice
index 12e20ed..f77d084 100644
--- a/cells/a222oi/sky130_fd_sc_ls__a222oi_2.spice
+++ b/cells/a222oi/sky130_fd_sc_ls__a222oi_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__a222oi_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_ls__a222oi_2 A1 A2 B1 B2 C1 C2 VGND VNB VPB VPWR Y
 M1000 a_137_74# C1 Y VNB nshort w=640000u l=150000u
@@ -50,4 +65,3 @@
 M1023 a_981_74# A2 VGND VNB nshort w=640000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a22o/sky130_fd_sc_ls__a22o_1.spice b/cells/a22o/sky130_fd_sc_ls__a22o_1.spice
index c485ad6..3a0c35e 100644
--- a/cells/a22o/sky130_fd_sc_ls__a22o_1.spice
+++ b/cells/a22o/sky130_fd_sc_ls__a22o_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__a22o_1 A1 A2 B1 B2 VGND VNB VPB VPWR X
 M1000 VGND A2 a_52_123# VNB nshort w=640000u l=150000u
@@ -22,4 +37,3 @@
 M1009 a_222_392# B1 a_230_79# VNB nshort w=640000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a22o/sky130_fd_sc_ls__a22o_2.spice b/cells/a22o/sky130_fd_sc_ls__a22o_2.spice
index 7cbf0fd..09a6754 100644
--- a/cells/a22o/sky130_fd_sc_ls__a22o_2.spice
+++ b/cells/a22o/sky130_fd_sc_ls__a22o_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__a22o_2 A1 A2 B1 B2 VGND VNB VPB VPWR X
 M1000 VPWR A2 a_388_368# VPB phighvt w=1e+06u l=150000u
@@ -26,4 +41,3 @@
 M1011 VGND a_81_48# X VNB nshort w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a22o/sky130_fd_sc_ls__a22o_4.spice b/cells/a22o/sky130_fd_sc_ls__a22o_4.spice
index 204b82c..c0fd5d5 100644
--- a/cells/a22o/sky130_fd_sc_ls__a22o_4.spice
+++ b/cells/a22o/sky130_fd_sc_ls__a22o_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__a22o_4 A1 A2 B1 B2 VGND VNB VPB VPWR X
 M1000 a_95_306# B1 a_645_120# VNB nshort w=640000u l=150000u
@@ -50,4 +65,3 @@
 M1023 a_645_120# B2 VGND VNB nshort w=640000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a22oi/sky130_fd_sc_ls__a22oi_1.spice b/cells/a22oi/sky130_fd_sc_ls__a22oi_1.spice
index f1b2a9c..865f65f 100644
--- a/cells/a22oi/sky130_fd_sc_ls__a22oi_1.spice
+++ b/cells/a22oi/sky130_fd_sc_ls__a22oi_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__a22oi_1 A1 A2 B1 B2 VGND VNB VPB VPWR Y
 M1000 Y B1 a_159_74# VNB nshort w=740000u l=150000u
@@ -18,4 +33,3 @@
 M1007 a_71_368# B1 Y VPB phighvt w=1.12e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a22oi/sky130_fd_sc_ls__a22oi_2.spice b/cells/a22oi/sky130_fd_sc_ls__a22oi_2.spice
index ad3f9b7..9f40619 100644
--- a/cells/a22oi/sky130_fd_sc_ls__a22oi_2.spice
+++ b/cells/a22oi/sky130_fd_sc_ls__a22oi_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__a22oi_2 A1 A2 B1 B2 VGND VNB VPB VPWR Y
 M1000 a_148_74# A2 VGND VNB nshort w=740000u l=150000u
@@ -34,4 +49,3 @@
 M1015 a_558_74# B2 VGND VNB nshort w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a22oi/sky130_fd_sc_ls__a22oi_4.spice b/cells/a22oi/sky130_fd_sc_ls__a22oi_4.spice
index f74aba1..27baa1e 100644
--- a/cells/a22oi/sky130_fd_sc_ls__a22oi_4.spice
+++ b/cells/a22oi/sky130_fd_sc_ls__a22oi_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__a22oi_4 A1 A2 B1 B2 VGND VNB VPB VPWR Y
 M1000 a_45_368# B1 Y VPB phighvt w=1.12e+06u l=150000u
@@ -66,4 +81,3 @@
 M1031 a_45_368# A1 VPWR VPB phighvt w=1.12e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a2bb2o/sky130_fd_sc_ls__a2bb2o_1.spice b/cells/a2bb2o/sky130_fd_sc_ls__a2bb2o_1.spice
index c727907..ef27326 100644
--- a/cells/a2bb2o/sky130_fd_sc_ls__a2bb2o_1.spice
+++ b/cells/a2bb2o/sky130_fd_sc_ls__a2bb2o_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__a2bb2o_1 A1_N A2_N B1 B2 VGND VNB VPB VPWR X
 M1000 VPWR B2 a_530_392# VPB phighvt w=1e+06u l=150000u
@@ -26,4 +41,3 @@
 M1011 a_258_392# A1_N VPWR VPB phighvt w=1e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a2bb2o/sky130_fd_sc_ls__a2bb2o_2.spice b/cells/a2bb2o/sky130_fd_sc_ls__a2bb2o_2.spice
index aadce0c..3c12c0c 100644
--- a/cells/a2bb2o/sky130_fd_sc_ls__a2bb2o_2.spice
+++ b/cells/a2bb2o/sky130_fd_sc_ls__a2bb2o_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__a2bb2o_2 A1_N A2_N B1 B2 VGND VNB VPB VPWR X
 M1000 a_221_74# B2 a_149_74# VNB nshort w=740000u l=150000u
@@ -30,4 +45,3 @@
 M1013 X a_221_74# VGND VNB nshort w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a2bb2o/sky130_fd_sc_ls__a2bb2o_4.spice b/cells/a2bb2o/sky130_fd_sc_ls__a2bb2o_4.spice
index be5ef8f..7631f1e 100644
--- a/cells/a2bb2o/sky130_fd_sc_ls__a2bb2o_4.spice
+++ b/cells/a2bb2o/sky130_fd_sc_ls__a2bb2o_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__a2bb2o_4 A1_N A2_N B1 B2 VGND VNB VPB VPWR X
 M1000 VPWR B1 a_820_392# VPB phighvt w=1e+06u l=150000u
@@ -48,4 +63,3 @@
 M1022 VPWR a_162_48# X VPB phighvt w=1.12e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a2bb2oi/sky130_fd_sc_ls__a2bb2oi_1.spice b/cells/a2bb2oi/sky130_fd_sc_ls__a2bb2oi_1.spice
index 36c61bb..b1f0165 100644
--- a/cells/a2bb2oi/sky130_fd_sc_ls__a2bb2oi_1.spice
+++ b/cells/a2bb2oi/sky130_fd_sc_ls__a2bb2oi_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__a2bb2oi_1 A1_N A2_N B1 B2 VGND VNB VPB VPWR Y
 M1000 Y a_126_112# VGND VNB nshort w=740000u l=150000u
@@ -22,4 +37,3 @@
 M1009 VPWR B2 a_399_368# VPB phighvt w=1.12e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a2bb2oi/sky130_fd_sc_ls__a2bb2oi_2.spice b/cells/a2bb2oi/sky130_fd_sc_ls__a2bb2oi_2.spice
index 60665a1..958a5fa 100644
--- a/cells/a2bb2oi/sky130_fd_sc_ls__a2bb2oi_2.spice
+++ b/cells/a2bb2oi/sky130_fd_sc_ls__a2bb2oi_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__a2bb2oi_2 A1_N A2_N B1 B2 VGND VNB VPB VPWR Y
 M1000 a_424_368# B1 VPWR VPB phighvt w=1.12e+06u l=150000u
@@ -34,4 +49,3 @@
 M1015 Y a_212_102# a_424_368# VPB phighvt w=1.12e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a2bb2oi/sky130_fd_sc_ls__a2bb2oi_4.spice b/cells/a2bb2oi/sky130_fd_sc_ls__a2bb2oi_4.spice
index 5e32d6b..1ef5b75 100644
--- a/cells/a2bb2oi/sky130_fd_sc_ls__a2bb2oi_4.spice
+++ b/cells/a2bb2oi/sky130_fd_sc_ls__a2bb2oi_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__a2bb2oi_4 A1_N A2_N B1 B2 VGND VNB VPB VPWR Y
 M1000 Y a_114_392# a_539_368# VPB phighvt w=1.12e+06u l=150000u
@@ -62,4 +77,3 @@
 M1029 Y B2 a_914_74# VNB nshort w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a311o/sky130_fd_sc_ls__a311o_1.spice b/cells/a311o/sky130_fd_sc_ls__a311o_1.spice
index 60d4e0c..f912c64 100644
--- a/cells/a311o/sky130_fd_sc_ls__a311o_1.spice
+++ b/cells/a311o/sky130_fd_sc_ls__a311o_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__a311o_1 A1 A2 A3 B1 C1 VGND VNB VPB VPWR X
 M1000 a_89_270# C1 VGND VNB nshort w=640000u l=150000u
@@ -26,4 +41,3 @@
 M1011 VGND B1 a_89_270# VNB nshort w=640000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a311o/sky130_fd_sc_ls__a311o_2.spice b/cells/a311o/sky130_fd_sc_ls__a311o_2.spice
index 67d4b37..8bb63ca 100644
--- a/cells/a311o/sky130_fd_sc_ls__a311o_2.spice
+++ b/cells/a311o/sky130_fd_sc_ls__a311o_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__a311o_2 A1 A2 A3 B1 C1 VGND VNB VPB VPWR X
 M1000 VPWR A2 a_330_392# VPB phighvt w=1e+06u l=150000u
@@ -30,4 +45,3 @@
 M1013 a_330_392# A3 VPWR VPB phighvt w=1e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a311o/sky130_fd_sc_ls__a311o_4.spice b/cells/a311o/sky130_fd_sc_ls__a311o_4.spice
index 54dcd76..560cfe3 100644
--- a/cells/a311o/sky130_fd_sc_ls__a311o_4.spice
+++ b/cells/a311o/sky130_fd_sc_ls__a311o_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__a311o_4 A1 A2 A3 B1 C1 VGND VNB VPB VPWR X
 M1000 VGND B1 a_154_392# VNB nshort w=640000u l=150000u
@@ -58,4 +73,3 @@
 M1027 VPWR A3 a_334_392# VPB phighvt w=1e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a311oi/sky130_fd_sc_ls__a311oi_1.spice b/cells/a311oi/sky130_fd_sc_ls__a311oi_1.spice
index 1095dad..d438ca5 100644
--- a/cells/a311oi/sky130_fd_sc_ls__a311oi_1.spice
+++ b/cells/a311oi/sky130_fd_sc_ls__a311oi_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__a311oi_1 A1 A2 A3 B1 C1 VGND VNB VPB VPWR Y
 M1000 a_231_74# A2 a_159_74# VNB nshort w=740000u l=150000u
@@ -22,4 +37,3 @@
 M1009 VPWR A2 a_156_368# VPB phighvt w=1.12e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a311oi/sky130_fd_sc_ls__a311oi_2.spice b/cells/a311oi/sky130_fd_sc_ls__a311oi_2.spice
index dc15311..82b09e7 100644
--- a/cells/a311oi/sky130_fd_sc_ls__a311oi_2.spice
+++ b/cells/a311oi/sky130_fd_sc_ls__a311oi_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__a311oi_2 A1 A2 A3 B1 C1 VGND VNB VPB VPWR Y
 M1000 a_692_368# B1 a_127_368# VPB phighvt w=1.12e+06u l=150000u
@@ -38,4 +53,3 @@
 M1017 Y C1 VGND VNB nshort w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a311oi/sky130_fd_sc_ls__a311oi_4.spice b/cells/a311oi/sky130_fd_sc_ls__a311oi_4.spice
index b633af9..1af89e0 100644
--- a/cells/a311oi/sky130_fd_sc_ls__a311oi_4.spice
+++ b/cells/a311oi/sky130_fd_sc_ls__a311oi_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__a311oi_4 A1 A2 A3 B1 C1 VGND VNB VPB VPWR Y
 M1000 a_114_368# A3 VPWR VPB phighvt w=1.12e+06u l=150000u
@@ -74,4 +89,3 @@
 M1035 Y A1 a_465_74# VNB nshort w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a31o/sky130_fd_sc_ls__a31o_1.spice b/cells/a31o/sky130_fd_sc_ls__a31o_1.spice
index b34bb0e..cd2e89c 100644
--- a/cells/a31o/sky130_fd_sc_ls__a31o_1.spice
+++ b/cells/a31o/sky130_fd_sc_ls__a31o_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__a31o_1 A1 A2 A3 B1 VGND VNB VPB VPWR X
 M1000 VGND B1 a_81_270# VNB nshort w=640000u l=150000u
@@ -22,4 +37,3 @@
 M1009 a_81_270# A1 a_337_120# VNB nshort w=640000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a31o/sky130_fd_sc_ls__a31o_2.spice b/cells/a31o/sky130_fd_sc_ls__a31o_2.spice
index 649a15a..eaed879 100644
--- a/cells/a31o/sky130_fd_sc_ls__a31o_2.spice
+++ b/cells/a31o/sky130_fd_sc_ls__a31o_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__a31o_2 A1 A2 A3 B1 VGND VNB VPB VPWR X
 M1000 a_362_368# A1 VPWR VPB phighvt w=1e+06u l=150000u
@@ -26,4 +41,3 @@
 M1011 VGND B1 a_97_296# VNB nshort w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a31o/sky130_fd_sc_ls__a31o_4.spice b/cells/a31o/sky130_fd_sc_ls__a31o_4.spice
index 01bd458..1361b9a 100644
--- a/cells/a31o/sky130_fd_sc_ls__a31o_4.spice
+++ b/cells/a31o/sky130_fd_sc_ls__a31o_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__a31o_4 A1 A2 A3 B1 VGND VNB VPB VPWR X
 M1000 VPWR a_83_274# X VPB phighvt w=1.12e+06u l=150000u
@@ -50,4 +65,3 @@
 M1023 a_529_392# A2 VPWR VPB phighvt w=1e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a31oi/sky130_fd_sc_ls__a31oi_1.spice b/cells/a31oi/sky130_fd_sc_ls__a31oi_1.spice
index 8260b08..484e423 100644
--- a/cells/a31oi/sky130_fd_sc_ls__a31oi_1.spice
+++ b/cells/a31oi/sky130_fd_sc_ls__a31oi_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__a31oi_1 A1 A2 A3 B1 VGND VNB VPB VPWR Y
 M1000 Y A1 a_223_74# VNB nshort w=740000u l=150000u
@@ -18,4 +33,3 @@
 M1007 a_145_74# A3 VGND VNB nshort w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a31oi/sky130_fd_sc_ls__a31oi_2.spice b/cells/a31oi/sky130_fd_sc_ls__a31oi_2.spice
index 807b584..a4b46ad 100644
--- a/cells/a31oi/sky130_fd_sc_ls__a31oi_2.spice
+++ b/cells/a31oi/sky130_fd_sc_ls__a31oi_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__a31oi_2 A1 A2 A3 B1 VGND VNB VPB VPWR Y
 M1000 a_27_368# A3 VPWR VPB phighvt w=1.12e+06u l=150000u
@@ -32,4 +47,3 @@
 M1014 a_200_74# A1 Y VNB nshort w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a31oi/sky130_fd_sc_ls__a31oi_4.spice b/cells/a31oi/sky130_fd_sc_ls__a31oi_4.spice
index 637cc88..12ad03d 100644
--- a/cells/a31oi/sky130_fd_sc_ls__a31oi_4.spice
+++ b/cells/a31oi/sky130_fd_sc_ls__a31oi_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__a31oi_4 A1 A2 A3 B1 VGND VNB VPB VPWR Y
 M1000 a_27_368# B1 Y VPB phighvt w=1.12e+06u l=150000u
@@ -62,4 +77,3 @@
 M1029 Y A1 a_475_74# VNB nshort w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a32o/sky130_fd_sc_ls__a32o_1.spice b/cells/a32o/sky130_fd_sc_ls__a32o_1.spice
index 1cd6747..badc1c7 100644
--- a/cells/a32o/sky130_fd_sc_ls__a32o_1.spice
+++ b/cells/a32o/sky130_fd_sc_ls__a32o_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__a32o_1 A1 A2 A3 B1 B2 VGND VNB VPB VPWR X
 M1000 a_244_368# B2 a_84_48# VPB phighvt w=1e+06u l=150000u
@@ -26,4 +41,3 @@
 M1011 a_84_48# A1 a_337_94# VNB nshort w=640000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a32o/sky130_fd_sc_ls__a32o_2.spice b/cells/a32o/sky130_fd_sc_ls__a32o_2.spice
index 1819968..04dc77e 100644
--- a/cells/a32o/sky130_fd_sc_ls__a32o_2.spice
+++ b/cells/a32o/sky130_fd_sc_ls__a32o_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__a32o_2 A1 A2 A3 B1 B2 VGND VNB VPB VPWR X
 M1000 a_661_74# B1 a_45_264# VNB nshort w=740000u l=150000u
@@ -30,4 +45,3 @@
 M1013 a_45_264# A1 a_433_74# VNB nshort w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a32o/sky130_fd_sc_ls__a32o_4.spice b/cells/a32o/sky130_fd_sc_ls__a32o_4.spice
index 808375d..396eac7 100644
--- a/cells/a32o/sky130_fd_sc_ls__a32o_4.spice
+++ b/cells/a32o/sky130_fd_sc_ls__a32o_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__a32o_4 A1 A2 A3 B1 B2 VGND VNB VPB VPWR X
 M1000 VPWR a_83_283# X VPB phighvt w=1.12e+06u l=150000u
@@ -58,4 +73,3 @@
 M1027 a_83_283# B1 a_587_110# VNB nshort w=640000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a32oi/sky130_fd_sc_ls__a32oi_1.spice b/cells/a32oi/sky130_fd_sc_ls__a32oi_1.spice
index e3e5c31..14088e4 100644
--- a/cells/a32oi/sky130_fd_sc_ls__a32oi_1.spice
+++ b/cells/a32oi/sky130_fd_sc_ls__a32oi_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__a32oi_1 A1 A2 A3 B1 B2 VGND VNB VPB VPWR Y
 M1000 VGND A3 a_469_74# VNB nshort w=740000u l=150000u
@@ -22,4 +37,3 @@
 M1009 VPWR A1 a_27_368# VPB phighvt w=1.12e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a32oi/sky130_fd_sc_ls__a32oi_2.spice b/cells/a32oi/sky130_fd_sc_ls__a32oi_2.spice
index 56411e0..7346c1e 100644
--- a/cells/a32oi/sky130_fd_sc_ls__a32oi_2.spice
+++ b/cells/a32oi/sky130_fd_sc_ls__a32oi_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__a32oi_2 A1 A2 A3 B1 B2 VGND VNB VPB VPWR Y
 M1000 a_27_368# A2 VPWR VPB phighvt w=1.12e+06u l=150000u
@@ -42,4 +57,3 @@
 M1019 a_27_368# B1 Y VPB phighvt w=1.12e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a32oi/sky130_fd_sc_ls__a32oi_4.spice b/cells/a32oi/sky130_fd_sc_ls__a32oi_4.spice
index 038419c..035a2b7 100644
--- a/cells/a32oi/sky130_fd_sc_ls__a32oi_4.spice
+++ b/cells/a32oi/sky130_fd_sc_ls__a32oi_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__a32oi_4 A1 A2 A3 B1 B2 VGND VNB VPB VPWR Y
 M1000 a_27_368# B2 Y VPB phighvt w=1.12e+06u l=150000u
@@ -82,4 +97,3 @@
 M1039 a_1313_74# A3 VGND VNB nshort w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a41o/sky130_fd_sc_ls__a41o_1.spice b/cells/a41o/sky130_fd_sc_ls__a41o_1.spice
index 26b76b2..12d482e 100644
--- a/cells/a41o/sky130_fd_sc_ls__a41o_1.spice
+++ b/cells/a41o/sky130_fd_sc_ls__a41o_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__a41o_1 A1 A2 A3 A4 B1 VGND VNB VPB VPWR X
 M1000 a_543_74# A2 a_449_74# VNB nshort w=740000u l=150000u
@@ -26,4 +41,3 @@
 M1011 VGND A4 a_657_74# VNB nshort w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a41o/sky130_fd_sc_ls__a41o_2.spice b/cells/a41o/sky130_fd_sc_ls__a41o_2.spice
index c5c56f2..e31bce9 100644
--- a/cells/a41o/sky130_fd_sc_ls__a41o_2.spice
+++ b/cells/a41o/sky130_fd_sc_ls__a41o_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__a41o_2 A1 A2 A3 A4 B1 VGND VNB VPB VPWR X
 M1000 a_441_74# B1 a_27_392# VPB phighvt w=1e+06u l=150000u
@@ -30,4 +45,3 @@
 M1013 VPWR A2 a_27_392# VPB phighvt w=1e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a41o/sky130_fd_sc_ls__a41o_4.spice b/cells/a41o/sky130_fd_sc_ls__a41o_4.spice
index 7df9c23..3d76f9e 100644
--- a/cells/a41o/sky130_fd_sc_ls__a41o_4.spice
+++ b/cells/a41o/sky130_fd_sc_ls__a41o_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__a41o_4 A1 A2 A3 A4 B1 VGND VNB VPB VPWR X
 M1000 VPWR a_113_98# X VPB phighvt w=1.12e+06u l=150000u
@@ -58,4 +73,3 @@
 M1027 a_27_392# A3 VPWR VPB phighvt w=1e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a41oi/sky130_fd_sc_ls__a41oi_1.spice b/cells/a41oi/sky130_fd_sc_ls__a41oi_1.spice
index 279b6ee..8627ccd 100644
--- a/cells/a41oi/sky130_fd_sc_ls__a41oi_1.spice
+++ b/cells/a41oi/sky130_fd_sc_ls__a41oi_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__a41oi_1 A1 A2 A3 A4 B1 VGND VNB VPB VPWR Y
 M1000 Y A1 a_469_74# VNB nshort w=740000u l=150000u
@@ -22,4 +37,3 @@
 M1009 a_469_74# A2 a_355_74# VNB nshort w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a41oi/sky130_fd_sc_ls__a41oi_2.spice b/cells/a41oi/sky130_fd_sc_ls__a41oi_2.spice
index 3ebb8f8..53f6e2d 100644
--- a/cells/a41oi/sky130_fd_sc_ls__a41oi_2.spice
+++ b/cells/a41oi/sky130_fd_sc_ls__a41oi_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__a41oi_2 A1 A2 A3 A4 B1 VGND VNB VPB VPWR Y
 M1000 a_709_74# A3 a_512_74# VNB nshort w=740000u l=150000u
@@ -40,4 +55,3 @@
 M1018 a_27_368# A2 VPWR VPB phighvt w=1.12e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a41oi/sky130_fd_sc_ls__a41oi_4.spice b/cells/a41oi/sky130_fd_sc_ls__a41oi_4.spice
index dbb1db2..9cf2c3a 100644
--- a/cells/a41oi/sky130_fd_sc_ls__a41oi_4.spice
+++ b/cells/a41oi/sky130_fd_sc_ls__a41oi_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__a41oi_4 A1 A2 A3 A4 B1 VGND VNB VPB VPWR Y
 M1000 a_27_368# B1 Y VPB phighvt w=1.12e+06u l=150000u
@@ -78,4 +93,3 @@
 M1037 VPWR A2 a_27_368# VPB phighvt w=1.12e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/and2/sky130_fd_sc_ls__and2_1.spice b/cells/and2/sky130_fd_sc_ls__and2_1.spice
index e54f336..6dd924a 100644
--- a/cells/and2/sky130_fd_sc_ls__and2_1.spice
+++ b/cells/and2/sky130_fd_sc_ls__and2_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__and2_1 A B VGND VNB VPB VPWR X
 M1000 VPWR B a_56_136# VPB phighvt w=840000u l=150000u
@@ -14,4 +29,3 @@
 M1005 X a_56_136# VGND VNB nshort w=740000u l=150000u
 +  ad=2.109e+11p pd=2.05e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/and2/sky130_fd_sc_ls__and2_2.spice b/cells/and2/sky130_fd_sc_ls__and2_2.spice
index 41f1cee..6783aa0 100644
--- a/cells/and2/sky130_fd_sc_ls__and2_2.spice
+++ b/cells/and2/sky130_fd_sc_ls__and2_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__and2_2 A B VGND VNB VPB VPWR X
 M1000 VPWR a_31_74# X VPB phighvt w=1.12e+06u l=150000u
@@ -18,4 +33,3 @@
 M1007 VGND a_31_74# X VNB nshort w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/and2/sky130_fd_sc_ls__and2_4.spice b/cells/and2/sky130_fd_sc_ls__and2_4.spice
index eb7ad7f..12c8fb5 100644
--- a/cells/and2/sky130_fd_sc_ls__and2_4.spice
+++ b/cells/and2/sky130_fd_sc_ls__and2_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__and2_4 A B VGND VNB VPB VPWR X
 M1000 X a_83_269# VGND VNB nshort w=740000u l=150000u
@@ -34,4 +49,3 @@
 M1015 VGND a_83_269# X VNB nshort w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/and2b/sky130_fd_sc_ls__and2b_1.spice b/cells/and2b/sky130_fd_sc_ls__and2b_1.spice
index fff27e4..03f8530 100644
--- a/cells/and2b/sky130_fd_sc_ls__and2b_1.spice
+++ b/cells/and2b/sky130_fd_sc_ls__and2b_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__and2b_1 A_N B VGND VNB VPB VPWR X
 M1000 a_353_98# a_27_74# a_266_98# VNB nshort w=640000u l=150000u
@@ -18,4 +33,3 @@
 M1007 VPWR B a_266_98# VPB phighvt w=840000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/and2b/sky130_fd_sc_ls__and2b_2.spice b/cells/and2b/sky130_fd_sc_ls__and2b_2.spice
index b272ce0..cbe125a 100644
--- a/cells/and2b/sky130_fd_sc_ls__and2b_2.spice
+++ b/cells/and2b/sky130_fd_sc_ls__and2b_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__and2b_2 A_N B VGND VNB VPB VPWR X
 M1000 a_505_74# B VGND VNB nshort w=740000u l=150000u
@@ -22,4 +37,3 @@
 M1009 a_198_48# B VPWR VPB phighvt w=1e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/and2b/sky130_fd_sc_ls__and2b_4.spice b/cells/and2b/sky130_fd_sc_ls__and2b_4.spice
index 9299f1f..c952a93 100644
--- a/cells/and2b/sky130_fd_sc_ls__and2b_4.spice
+++ b/cells/and2b/sky130_fd_sc_ls__and2b_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__and2b_4 A_N B VGND VNB VPB VPWR X
 M1000 VGND a_218_424# X VNB nshort w=740000u l=150000u
@@ -38,4 +53,3 @@
 M1017 VPWR A_N a_27_392# VPB phighvt w=1e+06u l=150000u
 +  ad=0p pd=0u as=2.85e+11p ps=2.57e+06u
 .ends
-
diff --git a/cells/and3/sky130_fd_sc_ls__and3_1.spice b/cells/and3/sky130_fd_sc_ls__and3_1.spice
index e41c0ff..8e1f11d 100644
--- a/cells/and3/sky130_fd_sc_ls__and3_1.spice
+++ b/cells/and3/sky130_fd_sc_ls__and3_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__and3_1 A B C VGND VNB VPB VPWR X
 M1000 VPWR C a_27_398# VPB phighvt w=840000u l=150000u
@@ -18,4 +33,3 @@
 M1007 X a_27_398# VGND VNB nshort w=740000u l=150000u
 +  ad=2.109e+11p pd=2.05e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/and3/sky130_fd_sc_ls__and3_2.spice b/cells/and3/sky130_fd_sc_ls__and3_2.spice
index e6d16ee..2499fd7 100644
--- a/cells/and3/sky130_fd_sc_ls__and3_2.spice
+++ b/cells/and3/sky130_fd_sc_ls__and3_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__and3_2 A B C VGND VNB VPB VPWR X
 M1000 VPWR A a_41_384# VPB phighvt w=840000u l=150000u
@@ -22,4 +37,3 @@
 M1009 X a_41_384# VGND VNB nshort w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/and3/sky130_fd_sc_ls__and3_4.spice b/cells/and3/sky130_fd_sc_ls__and3_4.spice
index 3b06e5c..ce0e81e 100644
--- a/cells/and3/sky130_fd_sc_ls__and3_4.spice
+++ b/cells/and3/sky130_fd_sc_ls__and3_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__and3_4 A B C VGND VNB VPB VPWR X
 M1000 VPWR a_83_260# X VPB phighvt w=1.12e+06u l=150000u
@@ -42,4 +57,3 @@
 M1019 a_686_74# A a_83_260# VNB nshort w=640000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/and3b/sky130_fd_sc_ls__and3b_1.spice b/cells/and3b/sky130_fd_sc_ls__and3b_1.spice
index adb5251..4e49b00 100644
--- a/cells/and3b/sky130_fd_sc_ls__and3b_1.spice
+++ b/cells/and3b/sky130_fd_sc_ls__and3b_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__and3b_1 A_N B C VGND VNB VPB VPWR X
 M1000 X a_266_94# VPWR VPB phighvt w=1.12e+06u l=150000u
@@ -22,4 +37,3 @@
 M1009 VGND C a_431_94# VNB nshort w=640000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/and3b/sky130_fd_sc_ls__and3b_2.spice b/cells/and3b/sky130_fd_sc_ls__and3b_2.spice
index 8170f3d..5c771f5 100644
--- a/cells/and3b/sky130_fd_sc_ls__and3b_2.spice
+++ b/cells/and3b/sky130_fd_sc_ls__and3b_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__and3b_2 A_N B C VGND VNB VPB VPWR X
 M1000 VGND C a_454_74# VNB nshort w=740000u l=150000u
@@ -26,4 +41,3 @@
 M1011 VGND a_284_368# X VNB nshort w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/and3b/sky130_fd_sc_ls__and3b_4.spice b/cells/and3b/sky130_fd_sc_ls__and3b_4.spice
index cb1656c..38fd8d0 100644
--- a/cells/and3b/sky130_fd_sc_ls__and3b_4.spice
+++ b/cells/and3b/sky130_fd_sc_ls__and3b_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__and3b_4 A_N B C VGND VNB VPB VPWR X
 M1000 a_239_98# a_27_74# a_298_368# VNB nshort w=640000u l=150000u
@@ -46,4 +61,3 @@
 M1021 X a_298_368# VPWR VPB phighvt w=1.12e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/and4/sky130_fd_sc_ls__and4_1.spice b/cells/and4/sky130_fd_sc_ls__and4_1.spice
index e03ae11..dd36d9a 100644
--- a/cells/and4/sky130_fd_sc_ls__and4_1.spice
+++ b/cells/and4/sky130_fd_sc_ls__and4_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__and4_1 A B C D VGND VNB VPB VPWR X
 M1000 VPWR D a_96_74# VPB phighvt w=840000u l=150000u
@@ -22,4 +37,3 @@
 M1009 a_96_74# C VPWR VPB phighvt w=840000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/and4/sky130_fd_sc_ls__and4_2.spice b/cells/and4/sky130_fd_sc_ls__and4_2.spice
index e33031c..fc070cc 100644
--- a/cells/and4/sky130_fd_sc_ls__and4_2.spice
+++ b/cells/and4/sky130_fd_sc_ls__and4_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__and4_2 A B C D VGND VNB VPB VPWR X
 M1000 a_221_74# B a_143_74# VNB nshort w=740000u l=150000u
@@ -26,4 +41,3 @@
 M1011 VPWR B a_56_74# VPB phighvt w=1e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/and4/sky130_fd_sc_ls__and4_4.spice b/cells/and4/sky130_fd_sc_ls__and4_4.spice
index ae29699..4c94a5c 100644
--- a/cells/and4/sky130_fd_sc_ls__and4_4.spice
+++ b/cells/and4/sky130_fd_sc_ls__and4_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__and4_4 A B C D VGND VNB VPB VPWR X
 M1000 a_116_392# A VPWR VPB phighvt w=1e+06u l=150000u
@@ -50,4 +65,3 @@
 M1023 VPWR B a_116_392# VPB phighvt w=1e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/and4b/sky130_fd_sc_ls__and4b_1.spice b/cells/and4b/sky130_fd_sc_ls__and4b_1.spice
index f757727..4ecd682 100644
--- a/cells/and4b/sky130_fd_sc_ls__and4b_1.spice
+++ b/cells/and4b/sky130_fd_sc_ls__and4b_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__and4b_1 A_N B C D VGND VNB VPB VPWR X
 M1000 VGND D a_526_139# VNB nshort w=640000u l=150000u
@@ -26,4 +41,3 @@
 M1011 a_526_139# C a_448_139# VNB nshort w=640000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/and4b/sky130_fd_sc_ls__and4b_2.spice b/cells/and4b/sky130_fd_sc_ls__and4b_2.spice
index 1a134d5..469fc3e 100644
--- a/cells/and4b/sky130_fd_sc_ls__and4b_2.spice
+++ b/cells/and4b/sky130_fd_sc_ls__and4b_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__and4b_2 A_N B C D VGND VNB VPB VPWR X
 M1000 a_537_74# C a_459_74# VNB nshort w=740000u l=150000u
@@ -30,4 +45,3 @@
 M1013 VPWR a_27_112# a_186_48# VPB phighvt w=1e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/and4b/sky130_fd_sc_ls__and4b_4.spice b/cells/and4b/sky130_fd_sc_ls__and4b_4.spice
index 9b0cdd0..fa5e66d 100644
--- a/cells/and4b/sky130_fd_sc_ls__and4b_4.spice
+++ b/cells/and4b/sky130_fd_sc_ls__and4b_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__and4b_4 A_N B C D VGND VNB VPB VPWR X
 M1000 a_664_125# C a_751_125# VNB nshort w=640000u l=150000u
@@ -54,4 +69,3 @@
 M1025 X a_199_294# VGND VNB nshort w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/and4bb/sky130_fd_sc_ls__and4bb_1.spice b/cells/and4bb/sky130_fd_sc_ls__and4bb_1.spice
index 85cdf8d..318b01f 100644
--- a/cells/and4bb/sky130_fd_sc_ls__and4bb_1.spice
+++ b/cells/and4bb/sky130_fd_sc_ls__and4bb_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__and4bb_1 A_N B_N C D VGND VNB VPB VPWR X
 M1000 VGND D a_647_74# VNB nshort w=640000u l=150000u
@@ -30,4 +45,3 @@
 M1013 VPWR a_503_48# a_179_48# VPB phighvt w=840000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/and4bb/sky130_fd_sc_ls__and4bb_2.spice b/cells/and4bb/sky130_fd_sc_ls__and4bb_2.spice
index 604d476..2e43c58 100644
--- a/cells/and4bb/sky130_fd_sc_ls__and4bb_2.spice
+++ b/cells/and4bb/sky130_fd_sc_ls__and4bb_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__and4bb_2 A_N B_N C D VGND VNB VPB VPWR X
 M1000 VPWR A_N a_27_74# VPB phighvt w=840000u l=150000u
@@ -34,4 +49,3 @@
 M1015 VGND A_N a_27_74# VNB nshort w=550000u l=150000u
 +  ad=0p pd=0u as=1.5675e+11p ps=1.67e+06u
 .ends
-
diff --git a/cells/and4bb/sky130_fd_sc_ls__and4bb_4.spice b/cells/and4bb/sky130_fd_sc_ls__and4bb_4.spice
index b0cdd73..b087ed1 100644
--- a/cells/and4bb/sky130_fd_sc_ls__and4bb_4.spice
+++ b/cells/and4bb/sky130_fd_sc_ls__and4bb_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__and4bb_4 A_N B_N C D VGND VNB VPB VPWR X
 M1000 X a_472_388# VPWR VPB phighvt w=1.12e+06u l=150000u
@@ -58,4 +73,3 @@
 M1027 a_412_140# a_27_74# a_685_140# VNB nshort w=640000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/buf/sky130_fd_sc_ls__buf_1.spice b/cells/buf/sky130_fd_sc_ls__buf_1.spice
index a1c848e..10808d8 100644
--- a/cells/buf/sky130_fd_sc_ls__buf_1.spice
+++ b/cells/buf/sky130_fd_sc_ls__buf_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__buf_1 A VGND VNB VPB VPWR X
 M1000 VPWR A a_27_164# VPB phighvt w=840000u l=150000u
@@ -10,4 +25,3 @@
 M1003 X a_27_164# VGND VNB nshort w=740000u l=150000u
 +  ad=2.109e+11p pd=2.05e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/buf/sky130_fd_sc_ls__buf_16.spice b/cells/buf/sky130_fd_sc_ls__buf_16.spice
index 850d51d..34d8ce5 100644
--- a/cells/buf/sky130_fd_sc_ls__buf_16.spice
+++ b/cells/buf/sky130_fd_sc_ls__buf_16.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__buf_16 A VGND VNB VPB VPWR X
 M1000 X a_83_260# VGND VNB nshort w=740000u l=150000u
@@ -90,4 +105,3 @@
 M1043 a_83_260# A VGND VNB nshort w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/buf/sky130_fd_sc_ls__buf_2.spice b/cells/buf/sky130_fd_sc_ls__buf_2.spice
index f854af3..a806a0d 100644
--- a/cells/buf/sky130_fd_sc_ls__buf_2.spice
+++ b/cells/buf/sky130_fd_sc_ls__buf_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__buf_2 A VGND VNB VPB VPWR X
 M1000 X a_21_260# VPWR VPB phighvt w=1.12e+06u l=150000u
@@ -14,4 +29,3 @@
 M1005 X a_21_260# VGND VNB nshort w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/buf/sky130_fd_sc_ls__buf_4.spice b/cells/buf/sky130_fd_sc_ls__buf_4.spice
index 083d25d..54aefe9 100644
--- a/cells/buf/sky130_fd_sc_ls__buf_4.spice
+++ b/cells/buf/sky130_fd_sc_ls__buf_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__buf_4 A VGND VNB VPB VPWR X
 M1000 VGND a_86_260# X VNB nshort w=740000u l=150000u
@@ -24,4 +39,3 @@
 M1010 X a_86_260# VGND VNB nshort w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/buf/sky130_fd_sc_ls__buf_8.spice b/cells/buf/sky130_fd_sc_ls__buf_8.spice
index 8de3685..2654305 100644
--- a/cells/buf/sky130_fd_sc_ls__buf_8.spice
+++ b/cells/buf/sky130_fd_sc_ls__buf_8.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__buf_8 A VGND VNB VPB VPWR X
 M1000 VPWR a_27_74# X VPB phighvt w=1.12e+06u l=150000u
@@ -46,4 +61,3 @@
 M1021 X a_27_74# VPWR VPB phighvt w=1.12e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/bufbuf/sky130_fd_sc_ls__bufbuf_16.spice b/cells/bufbuf/sky130_fd_sc_ls__bufbuf_16.spice
index 39a2a1c..a4f8995 100644
--- a/cells/bufbuf/sky130_fd_sc_ls__bufbuf_16.spice
+++ b/cells/bufbuf/sky130_fd_sc_ls__bufbuf_16.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__bufbuf_16 A VGND VNB VPB VPWR X
 M1000 a_588_74# a_203_74# VGND VNB nshort w=740000u l=150000u
@@ -106,4 +121,3 @@
 M1051 VPWR a_588_74# X VPB phighvt w=1.12e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/bufbuf/sky130_fd_sc_ls__bufbuf_8.spice b/cells/bufbuf/sky130_fd_sc_ls__bufbuf_8.spice
index 2eafd55..65e7f6c 100644
--- a/cells/bufbuf/sky130_fd_sc_ls__bufbuf_8.spice
+++ b/cells/bufbuf/sky130_fd_sc_ls__bufbuf_8.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__bufbuf_8 A VGND VNB VPB VPWR X
 M1000 a_221_368# a_27_112# VPWR VPB phighvt w=1.12e+06u l=150000u
@@ -54,4 +69,3 @@
 M1025 VGND a_334_368# X VNB nshort w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/bufinv/sky130_fd_sc_ls__bufinv_16.spice b/cells/bufinv/sky130_fd_sc_ls__bufinv_16.spice
index d7b1c9d..c0ed426 100644
--- a/cells/bufinv/sky130_fd_sc_ls__bufinv_16.spice
+++ b/cells/bufinv/sky130_fd_sc_ls__bufinv_16.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__bufinv_16 A VGND VNB VPB VPWR Y
 M1000 VGND a_384_74# Y VNB nshort w=740000u l=150000u
@@ -102,4 +117,3 @@
 M1049 a_27_74# A VGND VNB nshort w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/bufinv/sky130_fd_sc_ls__bufinv_8.spice b/cells/bufinv/sky130_fd_sc_ls__bufinv_8.spice
index 0112ada..53370f5 100644
--- a/cells/bufinv/sky130_fd_sc_ls__bufinv_8.spice
+++ b/cells/bufinv/sky130_fd_sc_ls__bufinv_8.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__bufinv_8 A VGND VNB VPB VPWR Y
 M1000 Y a_183_48# VPWR VPB phighvt w=1.12e+06u l=150000u
@@ -50,4 +65,3 @@
 M1023 a_183_48# a_27_368# VPWR VPB phighvt w=1.12e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/clkbuf/sky130_fd_sc_ls__clkbuf_1.spice b/cells/clkbuf/sky130_fd_sc_ls__clkbuf_1.spice
index eded225..a9017db 100644
--- a/cells/clkbuf/sky130_fd_sc_ls__clkbuf_1.spice
+++ b/cells/clkbuf/sky130_fd_sc_ls__clkbuf_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__clkbuf_1 A VGND VNB VPB VPWR X
 M1000 VPWR A a_27_74# VPB phighvt w=1.12e+06u l=150000u
@@ -10,4 +25,3 @@
 M1003 VGND A a_27_74# VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=1.197e+11p ps=1.41e+06u
 .ends
-
diff --git a/cells/clkbuf/sky130_fd_sc_ls__clkbuf_16.spice b/cells/clkbuf/sky130_fd_sc_ls__clkbuf_16.spice
index 65e9746..b4497a9 100644
--- a/cells/clkbuf/sky130_fd_sc_ls__clkbuf_16.spice
+++ b/cells/clkbuf/sky130_fd_sc_ls__clkbuf_16.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__clkbuf_16 A VGND VNB VPB VPWR X
 M1000 X a_114_74# VPWR VPB phighvt w=1.12e+06u l=150000u
@@ -82,4 +97,3 @@
 M1039 VGND a_114_74# X VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/clkbuf/sky130_fd_sc_ls__clkbuf_2.spice b/cells/clkbuf/sky130_fd_sc_ls__clkbuf_2.spice
index 83eb029..d065f6d 100644
--- a/cells/clkbuf/sky130_fd_sc_ls__clkbuf_2.spice
+++ b/cells/clkbuf/sky130_fd_sc_ls__clkbuf_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__clkbuf_2 A VGND VNB VPB VPWR X
 M1000 a_43_192# A VPWR VPB phighvt w=1.12e+06u l=150000u
@@ -14,4 +29,3 @@
 M1005 VGND a_43_192# X VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/clkbuf/sky130_fd_sc_ls__clkbuf_4.spice b/cells/clkbuf/sky130_fd_sc_ls__clkbuf_4.spice
index 4c5ff22..ab1ea3e 100644
--- a/cells/clkbuf/sky130_fd_sc_ls__clkbuf_4.spice
+++ b/cells/clkbuf/sky130_fd_sc_ls__clkbuf_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__clkbuf_4 A VGND VNB VPB VPWR X
 M1000 VPWR a_83_270# X VPB phighvt w=1.12e+06u l=150000u
@@ -22,4 +37,3 @@
 M1009 VGND a_83_270# X VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/clkbuf/sky130_fd_sc_ls__clkbuf_8.spice b/cells/clkbuf/sky130_fd_sc_ls__clkbuf_8.spice
index 49c4a1a..db591d9 100644
--- a/cells/clkbuf/sky130_fd_sc_ls__clkbuf_8.spice
+++ b/cells/clkbuf/sky130_fd_sc_ls__clkbuf_8.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__clkbuf_8 A VGND VNB VPB VPWR X
 M1000 VGND a_125_368# X VNB nshort w=420000u l=150000u
@@ -42,4 +57,3 @@
 M1019 VPWR a_125_368# X VPB phighvt w=1.12e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/clkdlyinv3sd1/sky130_fd_sc_ls__clkdlyinv3sd1_1.spice b/cells/clkdlyinv3sd1/sky130_fd_sc_ls__clkdlyinv3sd1_1.spice
index 3f0f9e3..34306b4 100644
--- a/cells/clkdlyinv3sd1/sky130_fd_sc_ls__clkdlyinv3sd1_1.spice
+++ b/cells/clkdlyinv3sd1/sky130_fd_sc_ls__clkdlyinv3sd1_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__clkdlyinv3sd1_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_ls__clkdlyinv3sd1_1 A VGND VNB VPB VPWR Y
 M1000 VGND A a_28_74# VNB nshort w=420000u l=150000u
@@ -14,4 +29,3 @@
 M1005 Y a_288_74# VGND VNB nshort w=420000u l=150000u
 +  ad=1.113e+11p pd=1.37e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/clkdlyinv3sd2/sky130_fd_sc_ls__clkdlyinv3sd2_1.spice b/cells/clkdlyinv3sd2/sky130_fd_sc_ls__clkdlyinv3sd2_1.spice
index ec64bfe..89fc779 100644
--- a/cells/clkdlyinv3sd2/sky130_fd_sc_ls__clkdlyinv3sd2_1.spice
+++ b/cells/clkdlyinv3sd2/sky130_fd_sc_ls__clkdlyinv3sd2_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__clkdlyinv3sd2_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_ls__clkdlyinv3sd2_1 A VGND VNB VPB VPWR Y
 M1000 a_288_74# a_28_74# VGND VNB nshort w=420000u l=180000u
@@ -14,4 +29,3 @@
 M1005 Y a_288_74# VGND VNB nshort w=420000u l=150000u
 +  ad=1.113e+11p pd=1.37e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/clkdlyinv3sd3/sky130_fd_sc_ls__clkdlyinv3sd3_1.spice b/cells/clkdlyinv3sd3/sky130_fd_sc_ls__clkdlyinv3sd3_1.spice
index 36d71e9..da936bd 100644
--- a/cells/clkdlyinv3sd3/sky130_fd_sc_ls__clkdlyinv3sd3_1.spice
+++ b/cells/clkdlyinv3sd3/sky130_fd_sc_ls__clkdlyinv3sd3_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__clkdlyinv3sd3_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_ls__clkdlyinv3sd3_1 A VGND VNB VPB VPWR Y
 M1000 a_288_74# a_28_74# VGND VNB nshort w=420000u l=500000u
@@ -14,4 +29,3 @@
 M1005 Y a_288_74# VGND VNB nshort w=420000u l=150000u
 +  ad=1.113e+11p pd=1.37e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/clkdlyinv5sd1/sky130_fd_sc_ls__clkdlyinv5sd1_1.spice b/cells/clkdlyinv5sd1/sky130_fd_sc_ls__clkdlyinv5sd1_1.spice
index 5143e9d..1abe65e 100644
--- a/cells/clkdlyinv5sd1/sky130_fd_sc_ls__clkdlyinv5sd1_1.spice
+++ b/cells/clkdlyinv5sd1/sky130_fd_sc_ls__clkdlyinv5sd1_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__clkdlyinv5sd1_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_ls__clkdlyinv5sd1_1 A VGND VNB VPB VPWR Y
 M1000 Y a_682_74# VPWR VPB phighvt w=1.12e+06u l=150000u
@@ -22,4 +37,3 @@
 M1009 a_288_74# a_28_74# VGND VNB nshort w=420000u l=150000u
 +  ad=1.113e+11p pd=1.37e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/clkdlyinv5sd2/sky130_fd_sc_ls__clkdlyinv5sd2_1.spice b/cells/clkdlyinv5sd2/sky130_fd_sc_ls__clkdlyinv5sd2_1.spice
index 7042756..9e6c0e8 100644
--- a/cells/clkdlyinv5sd2/sky130_fd_sc_ls__clkdlyinv5sd2_1.spice
+++ b/cells/clkdlyinv5sd2/sky130_fd_sc_ls__clkdlyinv5sd2_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__clkdlyinv5sd2_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_ls__clkdlyinv5sd2_1 A VGND VNB VPB VPWR Y
 M1000 a_549_74# a_288_74# VGND VNB nshort w=420000u l=180000u
@@ -22,4 +37,3 @@
 M1009 a_288_74# a_28_74# VPWR VPB phighvt w=1e+06u l=250000u
 +  ad=2.6e+11p pd=2.52e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/clkdlyinv5sd3/sky130_fd_sc_ls__clkdlyinv5sd3_1.spice b/cells/clkdlyinv5sd3/sky130_fd_sc_ls__clkdlyinv5sd3_1.spice
index 948064e..3228fa6 100644
--- a/cells/clkdlyinv5sd3/sky130_fd_sc_ls__clkdlyinv5sd3_1.spice
+++ b/cells/clkdlyinv5sd3/sky130_fd_sc_ls__clkdlyinv5sd3_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__clkdlyinv5sd3_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_ls__clkdlyinv5sd3_1 A VGND VNB VPB VPWR Y
 M1000 Y a_682_74# VPWR VPB phighvt w=1.12e+06u l=150000u
@@ -22,4 +37,3 @@
 M1009 VPWR A a_28_74# VPB phighvt w=1.12e+06u l=150000u
 +  ad=0p pd=0u as=3.136e+11p ps=2.8e+06u
 .ends
-
diff --git a/cells/clkinv/sky130_fd_sc_ls__clkinv_1.spice b/cells/clkinv/sky130_fd_sc_ls__clkinv_1.spice
index 7e7221d..2ed28eb 100644
--- a/cells/clkinv/sky130_fd_sc_ls__clkinv_1.spice
+++ b/cells/clkinv/sky130_fd_sc_ls__clkinv_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__clkinv_1 A VGND VNB VPB VPWR Y
 M1000 Y A VGND VNB nshort w=420000u l=150000u
@@ -8,4 +23,3 @@
 M1002 VPWR A Y VPB phighvt w=840000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/clkinv/sky130_fd_sc_ls__clkinv_16.spice b/cells/clkinv/sky130_fd_sc_ls__clkinv_16.spice
index 4103d5c..fbab24b 100644
--- a/cells/clkinv/sky130_fd_sc_ls__clkinv_16.spice
+++ b/cells/clkinv/sky130_fd_sc_ls__clkinv_16.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__clkinv_16 A VGND VNB VPB VPWR Y
 M1000 VPWR A Y VPB phighvt w=1.12e+06u l=150000u
@@ -82,4 +97,3 @@
 M1039 Y A VGND VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/clkinv/sky130_fd_sc_ls__clkinv_2.spice b/cells/clkinv/sky130_fd_sc_ls__clkinv_2.spice
index 79673ce..6b5ef5c 100644
--- a/cells/clkinv/sky130_fd_sc_ls__clkinv_2.spice
+++ b/cells/clkinv/sky130_fd_sc_ls__clkinv_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__clkinv_2 A VGND VNB VPB VPWR Y
 M1000 VGND A Y VNB nshort w=420000u l=150000u
@@ -12,4 +27,3 @@
 M1004 VPWR A Y VPB phighvt w=1.12e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/clkinv/sky130_fd_sc_ls__clkinv_4.spice b/cells/clkinv/sky130_fd_sc_ls__clkinv_4.spice
index 473bd2b..b35d831 100644
--- a/cells/clkinv/sky130_fd_sc_ls__clkinv_4.spice
+++ b/cells/clkinv/sky130_fd_sc_ls__clkinv_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__clkinv_4 A VGND VNB VPB VPWR Y
 M1000 VPWR A Y VPB phighvt w=1.12e+06u l=150000u
@@ -22,4 +37,3 @@
 M1009 Y A VGND VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/clkinv/sky130_fd_sc_ls__clkinv_8.spice b/cells/clkinv/sky130_fd_sc_ls__clkinv_8.spice
index 6e588ac..3305c6f 100644
--- a/cells/clkinv/sky130_fd_sc_ls__clkinv_8.spice
+++ b/cells/clkinv/sky130_fd_sc_ls__clkinv_8.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__clkinv_8 A VGND VNB VPB VPWR Y
 M1000 Y A VPWR VPB phighvt w=1.12e+06u l=150000u
@@ -42,4 +57,3 @@
 M1019 VGND A Y VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/conb/sky130_fd_sc_ls__conb_1.spice b/cells/conb/sky130_fd_sc_ls__conb_1.spice
index 6cd549a..f249d0a 100644
--- a/cells/conb/sky130_fd_sc_ls__conb_1.spice
+++ b/cells/conb/sky130_fd_sc_ls__conb_1.spice
@@ -1,7 +1,21 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__conb_1 VGND VNB VPB VPWR HI LO
 R0 HI VPWR short w=510000u l=45000u
 R1 VGND LO short w=510000u l=45000u
 .ends
-
diff --git a/cells/decap/sky130_fd_sc_ls__decap_4.spice b/cells/decap/sky130_fd_sc_ls__decap_4.spice
index cd09d1e..b3786cc 100644
--- a/cells/decap/sky130_fd_sc_ls__decap_4.spice
+++ b/cells/decap/sky130_fd_sc_ls__decap_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__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=420000u l=1e+06u
 +  ad=2.352e+11p pd=2.8e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/decap/sky130_fd_sc_ls__decap_8.spice b/cells/decap/sky130_fd_sc_ls__decap_8.spice
index a54b932..c5da094 100644
--- a/cells/decap/sky130_fd_sc_ls__decap_8.spice
+++ b/cells/decap/sky130_fd_sc_ls__decap_8.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__decap_8 VGND VNB VPB VPWR
 M1000 VGND VPWR VGND VNB nshort w=420000u l=1e+06u
@@ -10,4 +25,3 @@
 M1003 VPWR VGND VPWR VPB phighvt w=1e+06u l=1e+06u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/decaphe/sky130_fd_sc_ls__decaphe_18.spice b/cells/decaphe/sky130_fd_sc_ls__decaphe_18.spice
index 058a358..0331ae3 100644
--- a/cells/decaphe/sky130_fd_sc_ls__decaphe_18.spice
+++ b/cells/decaphe/sky130_fd_sc_ls__decaphe_18.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__decaphe_18.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ls__decaphe_18 VGND VNB VPB VPWR
 M1000 VGND VPWR VGND VNB nshort w=775000u l=7.85e+06u
@@ -6,4 +21,3 @@
 M1001 VPWR VGND VPWR VPB pshort w=1.255e+06u l=7.85e+06u
 +  ad=6.526e+11p pd=6.06e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/decaphe/sky130_fd_sc_ls__decaphe_2.spice b/cells/decaphe/sky130_fd_sc_ls__decaphe_2.spice
index 2daaba1..9810e5b 100644
--- a/cells/decaphe/sky130_fd_sc_ls__decaphe_2.spice
+++ b/cells/decaphe/sky130_fd_sc_ls__decaphe_2.spice
@@ -1,7 +1,21 @@
-* NGSPICE file created from sky130_fd_sc_ls__decaphe_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_ls__decaphe_2 VGND VNB VPB VPWR
 M1000 VPWR VGND VPWR VPB pshort w=1.255e+06u l=170000u
 +  ad=6.526e+11p pd=6.06e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/decaphe/sky130_fd_sc_ls__decaphe_3.spice b/cells/decaphe/sky130_fd_sc_ls__decaphe_3.spice
index 6bac6c0..c9d3fcb 100644
--- a/cells/decaphe/sky130_fd_sc_ls__decaphe_3.spice
+++ b/cells/decaphe/sky130_fd_sc_ls__decaphe_3.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__decaphe_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_ls__decaphe_3 VGND VNB VPB VPWR
 M1000 VGND VPWR VGND VNB nshort w=775000u l=650000u
@@ -6,4 +21,3 @@
 M1001 VPWR VGND VPWR VPB pshort w=1.255e+06u l=650000u
 +  ad=6.526e+11p pd=6.06e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/decaphe/sky130_fd_sc_ls__decaphe_4.spice b/cells/decaphe/sky130_fd_sc_ls__decaphe_4.spice
index 8fd09f4..8522a78 100644
--- a/cells/decaphe/sky130_fd_sc_ls__decaphe_4.spice
+++ b/cells/decaphe/sky130_fd_sc_ls__decaphe_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__decaphe_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_ls__decaphe_4 VGND VNB VPB VPWR
 M1000 VGND VPWR VGND VNB nshort w=775000u l=1.13e+06u
@@ -6,4 +21,3 @@
 M1001 VPWR VGND VPWR VPB pshort w=1.255e+06u l=1.13e+06u
 +  ad=6.526e+11p pd=6.06e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/decaphe/sky130_fd_sc_ls__decaphe_6.spice b/cells/decaphe/sky130_fd_sc_ls__decaphe_6.spice
index 8d481de..a9f4e64 100644
--- a/cells/decaphe/sky130_fd_sc_ls__decaphe_6.spice
+++ b/cells/decaphe/sky130_fd_sc_ls__decaphe_6.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__decaphe_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_ls__decaphe_6 VGND VNB VPB VPWR
 M1000 VGND VPWR VGND VNB nshort w=775000u l=2.09e+06u
@@ -6,4 +21,3 @@
 M1001 VPWR VGND VPWR VPB pshort w=1.255e+06u l=2.09e+06u
 +  ad=6.526e+11p pd=6.06e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/decaphe/sky130_fd_sc_ls__decaphe_8.spice b/cells/decaphe/sky130_fd_sc_ls__decaphe_8.spice
index a5e9874..e8d44b0 100644
--- a/cells/decaphe/sky130_fd_sc_ls__decaphe_8.spice
+++ b/cells/decaphe/sky130_fd_sc_ls__decaphe_8.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__decaphe_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_ls__decaphe_8 VGND VNB VPB VPWR
 M1000 VGND VPWR VGND VNB nshort w=775000u l=3.05e+06u
@@ -6,4 +21,3 @@
 M1001 VPWR VGND VPWR VPB pshort w=1.255e+06u l=3.05e+06u
 +  ad=6.526e+11p pd=6.06e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/decaphetap/sky130_fd_sc_ls__decaphetap_2.spice b/cells/decaphetap/sky130_fd_sc_ls__decaphetap_2.spice
index 66a357a..abba5c3 100644
--- a/cells/decaphetap/sky130_fd_sc_ls__decaphetap_2.spice
+++ b/cells/decaphetap/sky130_fd_sc_ls__decaphetap_2.spice
@@ -1,8 +1,22 @@
-* NGSPICE file created from sky130_fd_sc_ls__decaphetap_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_ls__decaphetap_2 VGND VPB VPWR
 R0 VGND VNB short w=0u l=2.03e+06u
 M1000 VPWR VGND VPWR VPB pshort w=1.255e+06u l=170000u
 +  ad=6.526e+11p pd=6.06e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/dfbbn/sky130_fd_sc_ls__dfbbn_1.spice b/cells/dfbbn/sky130_fd_sc_ls__dfbbn_1.spice
index fc66e9e..737afe4 100644
--- a/cells/dfbbn/sky130_fd_sc_ls__dfbbn_1.spice
+++ b/cells/dfbbn/sky130_fd_sc_ls__dfbbn_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__dfbbn_1 CLK_N D RESET_B SET_B VGND VNB VPB VPWR Q Q_N
 M1000 VGND a_1534_446# a_2412_410# VNB nshort w=420000u l=150000u
@@ -82,4 +97,3 @@
 M1039 a_1917_392# a_978_357# VPWR VPB phighvt w=1e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/dfbbn/sky130_fd_sc_ls__dfbbn_2.spice b/cells/dfbbn/sky130_fd_sc_ls__dfbbn_2.spice
index d6f1a75..686e1f1 100644
--- a/cells/dfbbn/sky130_fd_sc_ls__dfbbn_2.spice
+++ b/cells/dfbbn/sky130_fd_sc_ls__dfbbn_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__dfbbn_2 CLK_N D RESET_B SET_B VGND VNB VPB VPWR Q Q_N
 M1000 a_1240_125# a_473_405# VGND VNB nshort w=550000u l=150000u
@@ -90,4 +105,3 @@
 M1043 a_311_119# a_27_74# a_601_119# VPB phighvt w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/dfbbp/sky130_fd_sc_ls__dfbbp_1.spice b/cells/dfbbp/sky130_fd_sc_ls__dfbbp_1.spice
index 63ec4c4..46da92e 100644
--- a/cells/dfbbp/sky130_fd_sc_ls__dfbbp_1.spice
+++ b/cells/dfbbp/sky130_fd_sc_ls__dfbbp_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__dfbbp_1 CLK D RESET_B SET_B VGND VNB VPB VPWR Q Q_N
 M1000 VPWR a_1062_93# a_1814_392# VPB phighvt w=1e+06u l=150000u
@@ -82,4 +97,3 @@
 M1039 VPWR a_1474_446# a_1418_508# VPB phighvt w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/dfrbp/sky130_fd_sc_ls__dfrbp_1.spice b/cells/dfrbp/sky130_fd_sc_ls__dfrbp_1.spice
index 6058563..b9ee1e4 100644
--- a/cells/dfrbp/sky130_fd_sc_ls__dfrbp_1.spice
+++ b/cells/dfrbp/sky130_fd_sc_ls__dfrbp_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__dfrbp_1 CLK D RESET_B VGND VNB VPB VPWR Q Q_N
 M1000 VPWR CLK a_319_392# VPB phighvt w=1e+06u l=150000u
@@ -70,4 +85,3 @@
 M1033 a_910_119# a_841_401# a_832_119# VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/dfrbp/sky130_fd_sc_ls__dfrbp_2.spice b/cells/dfrbp/sky130_fd_sc_ls__dfrbp_2.spice
index f3ccf2e..2f1f82a 100644
--- a/cells/dfrbp/sky130_fd_sc_ls__dfrbp_2.spice
+++ b/cells/dfrbp/sky130_fd_sc_ls__dfrbp_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__dfrbp_2 CLK D RESET_B VGND VNB VPB VPWR Q Q_N
 M1000 VPWR a_2363_352# Q VPB phighvt w=1.12e+06u l=150000u
@@ -78,4 +93,3 @@
 M1037 Q a_2363_352# VGND VNB nshort w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/dfrtn/sky130_fd_sc_ls__dfrtn_1.spice b/cells/dfrtn/sky130_fd_sc_ls__dfrtn_1.spice
index e39f061..e32383f 100644
--- a/cells/dfrtn/sky130_fd_sc_ls__dfrtn_1.spice
+++ b/cells/dfrtn/sky130_fd_sc_ls__dfrtn_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__dfrtn_1 CLK_N D RESET_B VGND VNB VPB VPWR Q
 M1000 VGND a_1598_93# a_1550_119# VNB nshort w=420000u l=150000u
@@ -66,4 +81,3 @@
 M1031 VPWR a_841_288# a_817_463# VPB phighvt w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/dfrtp/sky130_fd_sc_ls__dfrtp_1.spice b/cells/dfrtp/sky130_fd_sc_ls__dfrtp_1.spice
index 095ca6f..07d6efd 100644
--- a/cells/dfrtp/sky130_fd_sc_ls__dfrtp_1.spice
+++ b/cells/dfrtp/sky130_fd_sc_ls__dfrtp_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__dfrtp_1 CLK D RESET_B VGND VNB VPB VPWR Q
 M1000 VPWR RESET_B a_30_78# VPB phighvt w=420000u l=150000u
@@ -66,4 +81,3 @@
 M1031 a_695_457# a_306_96# a_30_78# VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/dfrtp/sky130_fd_sc_ls__dfrtp_2.spice b/cells/dfrtp/sky130_fd_sc_ls__dfrtp_2.spice
index d39c5b8..5614d7d 100644
--- a/cells/dfrtp/sky130_fd_sc_ls__dfrtp_2.spice
+++ b/cells/dfrtp/sky130_fd_sc_ls__dfrtp_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__dfrtp_2 CLK D RESET_B VGND VNB VPB VPWR Q
 M1000 a_1525_212# RESET_B VPWR VPB phighvt w=420000u l=150000u
@@ -70,4 +85,3 @@
 M1033 VPWR a_1271_74# a_1525_212# VPB phighvt w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/dfrtp/sky130_fd_sc_ls__dfrtp_4.spice b/cells/dfrtp/sky130_fd_sc_ls__dfrtp_4.spice
index ae9d3fb..1dd0a0e 100644
--- a/cells/dfrtp/sky130_fd_sc_ls__dfrtp_4.spice
+++ b/cells/dfrtp/sky130_fd_sc_ls__dfrtp_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__dfrtp_4 CLK D RESET_B VGND VNB VPB VPWR Q
 M1000 VGND a_2010_409# Q VNB nshort w=740000u l=150000u
@@ -80,4 +95,3 @@
 M1038 VPWR a_1678_395# a_1627_493# VPB phighvt w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/dfsbp/sky130_fd_sc_ls__dfsbp_1.spice b/cells/dfsbp/sky130_fd_sc_ls__dfsbp_1.spice
index 841b08f..bcda941 100644
--- a/cells/dfsbp/sky130_fd_sc_ls__dfsbp_1.spice
+++ b/cells/dfsbp/sky130_fd_sc_ls__dfsbp_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__dfsbp_1 CLK D SET_B VGND VNB VPB VPWR Q Q_N
 M1000 a_596_81# a_398_74# a_27_80# VPB phighvt w=420000u l=150000u
@@ -70,4 +85,3 @@
 M1033 a_1262_74# a_596_81# VGND VNB nshort w=640000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/dfsbp/sky130_fd_sc_ls__dfsbp_2.spice b/cells/dfsbp/sky130_fd_sc_ls__dfsbp_2.spice
index 7a225bb..22cf464 100644
--- a/cells/dfsbp/sky130_fd_sc_ls__dfsbp_2.spice
+++ b/cells/dfsbp/sky130_fd_sc_ls__dfsbp_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__dfsbp_2 CLK D SET_B VGND VNB VPB VPWR Q Q_N
 M1000 a_1501_92# a_1339_74# VGND VNB nshort w=420000u l=150000u
@@ -78,4 +93,3 @@
 M1037 VGND SET_B a_1531_118# VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/dfstp/sky130_fd_sc_ls__dfstp_1.spice b/cells/dfstp/sky130_fd_sc_ls__dfstp_1.spice
index 34e4e11..22e9b66 100644
--- a/cells/dfstp/sky130_fd_sc_ls__dfstp_1.spice
+++ b/cells/dfstp/sky130_fd_sc_ls__dfstp_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__dfstp_1 CLK D SET_B VGND VNB VPB VPWR Q
 M1000 VPWR CLK a_224_350# VPB phighvt w=1.12e+06u l=150000u
@@ -66,4 +81,3 @@
 M1031 VPWR a_1298_392# a_1902_74# VPB phighvt w=840000u l=150000u
 +  ad=0p pd=0u as=2.31e+11p ps=2.23e+06u
 .ends
-
diff --git a/cells/dfstp/sky130_fd_sc_ls__dfstp_2.spice b/cells/dfstp/sky130_fd_sc_ls__dfstp_2.spice
index fe82d65..703c250 100644
--- a/cells/dfstp/sky130_fd_sc_ls__dfstp_2.spice
+++ b/cells/dfstp/sky130_fd_sc_ls__dfstp_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__dfstp_2 CLK D SET_B VGND VNB VPB VPWR Q
 M1000 a_612_74# a_398_74# a_27_74# VPB phighvt w=420000u l=150000u
@@ -70,4 +85,3 @@
 M1033 VPWR a_767_384# a_716_456# VPB phighvt w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/dfstp/sky130_fd_sc_ls__dfstp_4.spice b/cells/dfstp/sky130_fd_sc_ls__dfstp_4.spice
index 57ca4f5..626b740 100644
--- a/cells/dfstp/sky130_fd_sc_ls__dfstp_4.spice
+++ b/cells/dfstp/sky130_fd_sc_ls__dfstp_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__dfstp_4 CLK D SET_B VGND VNB VPB VPWR Q
 M1000 a_767_402# a_612_74# VPWR VPB phighvt w=420000u l=150000u
@@ -80,4 +95,3 @@
 M1038 VGND a_1321_392# a_1940_74# VNB nshort w=740000u l=150000u
 +  ad=0p pd=0u as=2.627e+11p ps=2.19e+06u
 .ends
-
diff --git a/cells/dfxbp/sky130_fd_sc_ls__dfxbp_1.spice b/cells/dfxbp/sky130_fd_sc_ls__dfxbp_1.spice
index 741ab79..88707b5 100644
--- a/cells/dfxbp/sky130_fd_sc_ls__dfxbp_1.spice
+++ b/cells/dfxbp/sky130_fd_sc_ls__dfxbp_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__dfxbp_1 CLK D VGND VNB VPB VPWR Q Q_N
 M1000 VPWR a_1191_120# a_1644_112# VPB phighvt w=840000u l=150000u
@@ -58,4 +73,3 @@
 M1027 VPWR a_1191_120# a_1158_482# VPB phighvt w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/dfxbp/sky130_fd_sc_ls__dfxbp_2.spice b/cells/dfxbp/sky130_fd_sc_ls__dfxbp_2.spice
index 03c7b34..ebe5bd5 100644
--- a/cells/dfxbp/sky130_fd_sc_ls__dfxbp_2.spice
+++ b/cells/dfxbp/sky130_fd_sc_ls__dfxbp_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__dfxbp_2 CLK D VGND VNB VPB VPWR Q Q_N
 M1000 a_1248_128# a_27_74# a_1000_424# VNB nshort w=420000u l=150000u
@@ -68,4 +83,3 @@
 M1032 a_1208_479# a_206_368# a_1000_424# VPB phighvt w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/dfxtp/sky130_fd_sc_ls__dfxtp_1.spice b/cells/dfxtp/sky130_fd_sc_ls__dfxtp_1.spice
index 6afb0bb..1ed31e2 100644
--- a/cells/dfxtp/sky130_fd_sc_ls__dfxtp_1.spice
+++ b/cells/dfxtp/sky130_fd_sc_ls__dfxtp_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__dfxtp_1 CLK D VGND VNB VPB VPWR Q
 M1000 VPWR a_713_458# a_668_503# VPB phighvt w=420000u l=150000u
@@ -50,4 +65,3 @@
 M1023 a_1168_124# a_27_74# a_1011_424# VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/dfxtp/sky130_fd_sc_ls__dfxtp_2.spice b/cells/dfxtp/sky130_fd_sc_ls__dfxtp_2.spice
index c40e367..bbb3f7f 100644
--- a/cells/dfxtp/sky130_fd_sc_ls__dfxtp_2.spice
+++ b/cells/dfxtp/sky130_fd_sc_ls__dfxtp_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__dfxtp_2 CLK D VGND VNB VPB VPWR Q
 M1000 VPWR a_1217_314# Q VPB phighvt w=1.12e+06u l=150000u
@@ -54,4 +69,3 @@
 M1025 VGND a_695_459# a_708_101# VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/dfxtp/sky130_fd_sc_ls__dfxtp_4.spice b/cells/dfxtp/sky130_fd_sc_ls__dfxtp_4.spice
index fd59a04..100b4c3 100644
--- a/cells/dfxtp/sky130_fd_sc_ls__dfxtp_4.spice
+++ b/cells/dfxtp/sky130_fd_sc_ls__dfxtp_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__dfxtp_4 CLK D VGND VNB VPB VPWR Q
 M1000 Q a_1226_296# VGND VNB nshort w=740000u l=150000u
@@ -64,4 +79,3 @@
 M1030 VGND a_1226_296# Q VNB nshort w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/diode/sky130_fd_sc_ls__diode_2.spice b/cells/diode/sky130_fd_sc_ls__diode_2.spice
index 1584389..6b8177d 100644
--- a/cells/diode/sky130_fd_sc_ls__diode_2.spice
+++ b/cells/diode/sky130_fd_sc_ls__diode_2.spice
@@ -1,6 +1,20 @@
-* NGSPICE file created from sky130_fd_sc_ls__diode_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_ls__diode_2 DIODE VGND VNB VPB VPWR
 D0 VNB DIODE ndiode p=7.32e+06u a=6.417e+11p
 .ends
-
diff --git a/cells/dlclkp/sky130_fd_sc_ls__dlclkp_1.spice b/cells/dlclkp/sky130_fd_sc_ls__dlclkp_1.spice
index 1aa758b..af25b0f 100644
--- a/cells/dlclkp/sky130_fd_sc_ls__dlclkp_1.spice
+++ b/cells/dlclkp/sky130_fd_sc_ls__dlclkp_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__dlclkp_1 CLK GATE VGND VNB VPB VPWR GCLK
 M1000 GCLK a_987_393# VPWR VPB phighvt w=1.12e+06u l=150000u
@@ -42,4 +57,3 @@
 M1019 a_83_260# a_315_54# a_267_80# VNB nshort w=640000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/dlclkp/sky130_fd_sc_ls__dlclkp_2.spice b/cells/dlclkp/sky130_fd_sc_ls__dlclkp_2.spice
index 43e95db..c1372ae 100644
--- a/cells/dlclkp/sky130_fd_sc_ls__dlclkp_2.spice
+++ b/cells/dlclkp/sky130_fd_sc_ls__dlclkp_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__dlclkp_2 CLK GATE VGND VNB VPB VPWR GCLK
 M1000 VPWR CLK a_315_48# VPB phighvt w=840000u l=150000u
@@ -46,4 +61,3 @@
 M1021 VPWR a_27_74# a_1041_387# VPB phighvt w=1e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/dlclkp/sky130_fd_sc_ls__dlclkp_4.spice b/cells/dlclkp/sky130_fd_sc_ls__dlclkp_4.spice
index 6aad27d..bc834dc 100644
--- a/cells/dlclkp/sky130_fd_sc_ls__dlclkp_4.spice
+++ b/cells/dlclkp/sky130_fd_sc_ls__dlclkp_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__dlclkp_4 CLK GATE VGND VNB VPB VPWR GCLK
 M1000 VPWR a_1044_368# GCLK VPB phighvt w=1.12e+06u l=150000u
@@ -54,4 +69,3 @@
 M1025 a_334_338# a_334_54# VGND VNB nshort w=740000u l=150000u
 +  ad=2.675e+11p pd=2.66e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/dlrbn/sky130_fd_sc_ls__dlrbn_1.spice b/cells/dlrbn/sky130_fd_sc_ls__dlrbn_1.spice
index 64f5e86..afdb41c 100644
--- a/cells/dlrbn/sky130_fd_sc_ls__dlrbn_1.spice
+++ b/cells/dlrbn/sky130_fd_sc_ls__dlrbn_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__dlrbn_1 D GATE_N RESET_B VGND VNB VPB VPWR Q Q_N
 M1000 a_611_392# a_27_424# VPWR VPB phighvt w=1e+06u l=150000u
@@ -50,4 +65,3 @@
 M1023 VPWR RESET_B a_889_92# VPB phighvt w=1.12e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/dlrbn/sky130_fd_sc_ls__dlrbn_2.spice b/cells/dlrbn/sky130_fd_sc_ls__dlrbn_2.spice
index a4712d0..558f5f3 100644
--- a/cells/dlrbn/sky130_fd_sc_ls__dlrbn_2.spice
+++ b/cells/dlrbn/sky130_fd_sc_ls__dlrbn_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__dlrbn_2 D GATE_N RESET_B VGND VNB VPB VPWR Q Q_N
 M1000 a_783_508# a_230_74# a_670_74# VPB phighvt w=420000u l=150000u
@@ -58,4 +73,3 @@
 M1027 Q a_838_48# VGND VNB nshort w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/dlrbp/sky130_fd_sc_ls__dlrbp_1.spice b/cells/dlrbp/sky130_fd_sc_ls__dlrbp_1.spice
index 40423e1..18b9a30 100644
--- a/cells/dlrbp/sky130_fd_sc_ls__dlrbp_1.spice
+++ b/cells/dlrbp/sky130_fd_sc_ls__dlrbp_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__dlrbp_1 D GATE RESET_B VGND VNB VPB VPWR Q Q_N
 M1000 Q a_823_98# VGND VNB nshort w=740000u l=150000u
@@ -50,4 +65,3 @@
 M1023 VPWR RESET_B a_823_98# VPB phighvt w=1.12e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/dlrbp/sky130_fd_sc_ls__dlrbp_2.spice b/cells/dlrbp/sky130_fd_sc_ls__dlrbp_2.spice
index 726bea9..f9ebd27 100644
--- a/cells/dlrbp/sky130_fd_sc_ls__dlrbp_2.spice
+++ b/cells/dlrbp/sky130_fd_sc_ls__dlrbp_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__dlrbp_2 D GATE RESET_B VGND VNB VPB VPWR Q Q_N
 M1000 VGND a_230_74# a_363_82# VNB nshort w=740000u l=150000u
@@ -58,4 +73,3 @@
 M1027 a_821_98# a_641_80# VPWR VPB phighvt w=1.12e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/dlrtn/sky130_fd_sc_ls__dlrtn_1.spice b/cells/dlrtn/sky130_fd_sc_ls__dlrtn_1.spice
index b5ec72f..cef100f 100644
--- a/cells/dlrtn/sky130_fd_sc_ls__dlrtn_1.spice
+++ b/cells/dlrtn/sky130_fd_sc_ls__dlrtn_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__dlrtn_1 D GATE_N RESET_B VGND VNB VPB VPWR Q
 M1000 VPWR D a_27_136# VPB phighvt w=840000u l=150000u
@@ -42,4 +57,3 @@
 M1019 a_232_98# GATE_N VPWR VPB phighvt w=840000u l=150000u
 +  ad=2.478e+11p pd=2.27e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/dlrtn/sky130_fd_sc_ls__dlrtn_2.spice b/cells/dlrtn/sky130_fd_sc_ls__dlrtn_2.spice
index 37d7292..76210fc 100644
--- a/cells/dlrtn/sky130_fd_sc_ls__dlrtn_2.spice
+++ b/cells/dlrtn/sky130_fd_sc_ls__dlrtn_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__dlrtn_2 D GATE_N RESET_B VGND VNB VPB VPWR Q
 M1000 VGND RESET_B a_1153_74# VNB nshort w=740000u l=150000u
@@ -46,4 +61,3 @@
 M1021 a_232_98# GATE_N VPWR VPB phighvt w=840000u l=150000u
 +  ad=2.478e+11p pd=2.27e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/dlrtn/sky130_fd_sc_ls__dlrtn_4.spice b/cells/dlrtn/sky130_fd_sc_ls__dlrtn_4.spice
index 17d0be9..2bd42de 100644
--- a/cells/dlrtn/sky130_fd_sc_ls__dlrtn_4.spice
+++ b/cells/dlrtn/sky130_fd_sc_ls__dlrtn_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__dlrtn_4 D GATE_N RESET_B VGND VNB VPB VPWR Q
 M1000 a_1035_74# RESET_B VGND VNB nshort w=640000u l=150000u
@@ -62,4 +77,3 @@
 M1029 VGND a_888_406# Q VNB nshort w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/dlrtp/sky130_fd_sc_ls__dlrtp_1.spice b/cells/dlrtp/sky130_fd_sc_ls__dlrtp_1.spice
index 13d59af..9cefe3d 100644
--- a/cells/dlrtp/sky130_fd_sc_ls__dlrtp_1.spice
+++ b/cells/dlrtp/sky130_fd_sc_ls__dlrtp_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__dlrtp_1 D GATE RESET_B VGND VNB VPB VPWR Q
 M1000 VPWR RESET_B a_817_48# VPB phighvt w=1e+06u l=150000u
@@ -42,4 +57,3 @@
 M1019 a_817_48# a_643_74# VPWR VPB phighvt w=1e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/dlrtp/sky130_fd_sc_ls__dlrtp_2.spice b/cells/dlrtp/sky130_fd_sc_ls__dlrtp_2.spice
index 0e329fe..5ddc566 100644
--- a/cells/dlrtp/sky130_fd_sc_ls__dlrtp_2.spice
+++ b/cells/dlrtp/sky130_fd_sc_ls__dlrtp_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__dlrtp_2 D GATE RESET_B VGND VNB VPB VPWR Q
 M1000 a_568_74# a_27_392# VGND VNB nshort w=640000u l=150000u
@@ -46,4 +61,3 @@
 M1021 VGND a_235_74# a_347_98# VNB nshort w=740000u l=150000u
 +  ad=0p pd=0u as=2.701e+11p ps=2.21e+06u
 .ends
-
diff --git a/cells/dlrtp/sky130_fd_sc_ls__dlrtp_4.spice b/cells/dlrtp/sky130_fd_sc_ls__dlrtp_4.spice
index 108d35f..f13b400 100644
--- a/cells/dlrtp/sky130_fd_sc_ls__dlrtp_4.spice
+++ b/cells/dlrtp/sky130_fd_sc_ls__dlrtp_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__dlrtp_4 D GATE RESET_B VGND VNB VPB VPWR Q
 M1000 a_240_394# GATE VPWR VPB phighvt w=840000u l=150000u
@@ -62,4 +77,3 @@
 M1029 a_755_74# a_240_394# a_640_74# VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/dlxbn/sky130_fd_sc_ls__dlxbn_1.spice b/cells/dlxbn/sky130_fd_sc_ls__dlxbn_1.spice
index 6a970dc..a169f5f 100644
--- a/cells/dlxbn/sky130_fd_sc_ls__dlxbn_1.spice
+++ b/cells/dlxbn/sky130_fd_sc_ls__dlxbn_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__dlxbn_1 D GATE_N VGND VNB VPB VPWR Q Q_N
 M1000 a_805_392# a_232_82# a_653_79# VPB phighvt w=420000u l=150000u
@@ -46,4 +61,3 @@
 M1021 a_653_79# a_343_80# a_571_392# VPB phighvt w=1e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/dlxbn/sky130_fd_sc_ls__dlxbn_2.spice b/cells/dlxbn/sky130_fd_sc_ls__dlxbn_2.spice
index 6aa072b..d035fbc 100644
--- a/cells/dlxbn/sky130_fd_sc_ls__dlxbn_2.spice
+++ b/cells/dlxbn/sky130_fd_sc_ls__dlxbn_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__dlxbn_2 D GATE_N VGND VNB VPB VPWR Q Q_N
 M1000 VPWR D a_27_136# VPB phighvt w=840000u l=150000u
@@ -54,4 +69,3 @@
 M1025 a_839_123# a_343_74# a_647_79# VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/dlxbp/sky130_fd_sc_ls__dlxbp_1.spice b/cells/dlxbp/sky130_fd_sc_ls__dlxbp_1.spice
index 70799db..71e2e10 100644
--- a/cells/dlxbp/sky130_fd_sc_ls__dlxbp_1.spice
+++ b/cells/dlxbp/sky130_fd_sc_ls__dlxbp_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__dlxbp_1 D GATE VGND VNB VPB VPWR Q Q_N
 M1000 a_664_392# a_231_74# a_586_392# VPB phighvt w=1e+06u l=150000u
@@ -46,4 +61,3 @@
 M1021 a_231_74# GATE VPWR VPB phighvt w=840000u l=150000u
 +  ad=2.478e+11p pd=2.27e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/dlxtn/sky130_fd_sc_ls__dlxtn_1.spice b/cells/dlxtn/sky130_fd_sc_ls__dlxtn_1.spice
index 1deb6bb..913e228 100644
--- a/cells/dlxtn/sky130_fd_sc_ls__dlxtn_1.spice
+++ b/cells/dlxtn/sky130_fd_sc_ls__dlxtn_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__dlxtn_1 D GATE_N VGND VNB VPB VPWR Q
 M1000 a_812_508# a_217_419# a_669_392# VPB phighvt w=420000u l=150000u
@@ -38,4 +53,3 @@
 M1017 VPWR a_863_441# a_812_508# VPB phighvt w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/dlxtn/sky130_fd_sc_ls__dlxtn_2.spice b/cells/dlxtn/sky130_fd_sc_ls__dlxtn_2.spice
index 95af777..9725a5c 100644
--- a/cells/dlxtn/sky130_fd_sc_ls__dlxtn_2.spice
+++ b/cells/dlxtn/sky130_fd_sc_ls__dlxtn_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__dlxtn_2 D GATE_N VGND VNB VPB VPWR Q
 M1000 a_658_79# a_27_120# VGND VNB nshort w=640000u l=150000u
@@ -42,4 +57,3 @@
 M1019 a_669_392# a_232_82# a_658_79# VNB nshort w=640000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/dlxtn/sky130_fd_sc_ls__dlxtn_4.spice b/cells/dlxtn/sky130_fd_sc_ls__dlxtn_4.spice
index 450bd8b..307bdcc 100644
--- a/cells/dlxtn/sky130_fd_sc_ls__dlxtn_4.spice
+++ b/cells/dlxtn/sky130_fd_sc_ls__dlxtn_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__dlxtn_4 D GATE_N VGND VNB VPB VPWR Q
 M1000 VPWR a_840_395# Q VPB phighvt w=1.12e+06u l=150000u
@@ -54,4 +69,3 @@
 M1025 a_675_392# a_230_424# a_658_79# VNB nshort w=640000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/dlxtp/sky130_fd_sc_ls__dlxtp_1.spice b/cells/dlxtp/sky130_fd_sc_ls__dlxtp_1.spice
index d902a4c..874f0ab 100644
--- a/cells/dlxtp/sky130_fd_sc_ls__dlxtp_1.spice
+++ b/cells/dlxtp/sky130_fd_sc_ls__dlxtp_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__dlxtp_1 D GATE VGND VNB VPB VPWR Q
 M1000 a_592_149# a_562_123# a_229_392# VPB phighvt w=1e+06u l=150000u
@@ -38,4 +53,3 @@
 M1017 VGND a_116_424# a_239_85# VNB nshort w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/dlygate4sd1/sky130_fd_sc_ls__dlygate4sd1_1.spice b/cells/dlygate4sd1/sky130_fd_sc_ls__dlygate4sd1_1.spice
index 3f2c12d..25deaa5 100644
--- a/cells/dlygate4sd1/sky130_fd_sc_ls__dlygate4sd1_1.spice
+++ b/cells/dlygate4sd1/sky130_fd_sc_ls__dlygate4sd1_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__dlygate4sd1_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_ls__dlygate4sd1_1 A VGND VNB VPB VPWR X
 M1000 a_286_392# a_28_74# VPWR VPB phighvt w=1e+06u l=150000u
@@ -18,4 +33,3 @@
 M1007 a_286_392# a_28_74# VGND VNB nshort w=420000u l=150000u
 +  ad=1.113e+11p pd=1.37e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/dlygate4sd2/sky130_fd_sc_ls__dlygate4sd2_1.spice b/cells/dlygate4sd2/sky130_fd_sc_ls__dlygate4sd2_1.spice
index 6c8cfbd..aea052c 100644
--- a/cells/dlygate4sd2/sky130_fd_sc_ls__dlygate4sd2_1.spice
+++ b/cells/dlygate4sd2/sky130_fd_sc_ls__dlygate4sd2_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__dlygate4sd2_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_ls__dlygate4sd2_1 A VGND VNB VPB VPWR X
 M1000 VPWR A a_28_74# VPB phighvt w=420000u l=150000u
@@ -18,4 +33,3 @@
 M1007 a_288_74# a_28_74# VPWR VPB phighvt w=1e+06u l=250000u
 +  ad=2.6e+11p pd=2.52e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/dlygate4sd3/sky130_fd_sc_ls__dlygate4sd3_1.spice b/cells/dlygate4sd3/sky130_fd_sc_ls__dlygate4sd3_1.spice
index 967fe5f..919f653 100644
--- a/cells/dlygate4sd3/sky130_fd_sc_ls__dlygate4sd3_1.spice
+++ b/cells/dlygate4sd3/sky130_fd_sc_ls__dlygate4sd3_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__dlygate4sd3_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_ls__dlygate4sd3_1 A VGND VNB VPB VPWR X
 M1000 VGND a_289_74# a_405_138# VNB nshort w=420000u l=500000u
@@ -18,4 +33,3 @@
 M1007 a_289_74# a_28_74# VGND VNB nshort w=420000u l=500000u
 +  ad=1.092e+11p pd=1.36e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/dlymetal6s2s/sky130_fd_sc_ls__dlymetal6s2s_1.spice b/cells/dlymetal6s2s/sky130_fd_sc_ls__dlymetal6s2s_1.spice
index 3a32177..570c0eb 100644
--- a/cells/dlymetal6s2s/sky130_fd_sc_ls__dlymetal6s2s_1.spice
+++ b/cells/dlymetal6s2s/sky130_fd_sc_ls__dlymetal6s2s_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__dlymetal6s2s_1 A VGND VNB VPB VPWR X
 M1000 VGND a_497_74# a_604_138# VNB nshort w=420000u l=150000u
@@ -26,4 +41,3 @@
 M1011 VPWR A a_28_138# VPB phighvt w=420000u l=150000u
 +  ad=0p pd=0u as=1.155e+11p ps=1.39e+06u
 .ends
-
diff --git a/cells/dlymetal6s4s/sky130_fd_sc_ls__dlymetal6s4s_1.spice b/cells/dlymetal6s4s/sky130_fd_sc_ls__dlymetal6s4s_1.spice
index 4b37aa7..a360e35 100644
--- a/cells/dlymetal6s4s/sky130_fd_sc_ls__dlymetal6s4s_1.spice
+++ b/cells/dlymetal6s4s/sky130_fd_sc_ls__dlymetal6s4s_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__dlymetal6s4s_1 A VGND VNB VPB VPWR X
 M1000 VGND X a_604_138# VNB nshort w=420000u l=150000u
@@ -26,4 +41,3 @@
 M1011 VPWR A a_28_138# VPB phighvt w=420000u l=150000u
 +  ad=0p pd=0u as=1.155e+11p ps=1.39e+06u
 .ends
-
diff --git a/cells/dlymetal6s6s/sky130_fd_sc_ls__dlymetal6s6s_1.spice b/cells/dlymetal6s6s/sky130_fd_sc_ls__dlymetal6s6s_1.spice
index 55daa6b..e2bac0d 100644
--- a/cells/dlymetal6s6s/sky130_fd_sc_ls__dlymetal6s6s_1.spice
+++ b/cells/dlymetal6s6s/sky130_fd_sc_ls__dlymetal6s6s_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__dlymetal6s6s_1 A VGND VNB VPB VPWR X
 M1000 VGND a_497_74# a_604_138# VNB nshort w=420000u l=150000u
@@ -26,4 +41,3 @@
 M1011 VPWR A a_28_138# VPB phighvt w=420000u l=150000u
 +  ad=0p pd=0u as=1.155e+11p ps=1.39e+06u
 .ends
-
diff --git a/cells/ebufn/sky130_fd_sc_ls__ebufn_1.spice b/cells/ebufn/sky130_fd_sc_ls__ebufn_1.spice
index ee33cb4..a314ec5 100644
--- a/cells/ebufn/sky130_fd_sc_ls__ebufn_1.spice
+++ b/cells/ebufn/sky130_fd_sc_ls__ebufn_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__ebufn_1 A TE_B VGND VNB VPB VPWR Z
 M1000 a_229_74# A VPWR VPB phighvt w=840000u l=150000u
@@ -18,4 +33,3 @@
 M1007 VGND TE_B a_27_404# VNB nshort w=550000u l=150000u
 +  ad=0p pd=0u as=1.5675e+11p ps=1.67e+06u
 .ends
-
diff --git a/cells/ebufn/sky130_fd_sc_ls__ebufn_2.spice b/cells/ebufn/sky130_fd_sc_ls__ebufn_2.spice
index 234908d..2c53909 100644
--- a/cells/ebufn/sky130_fd_sc_ls__ebufn_2.spice
+++ b/cells/ebufn/sky130_fd_sc_ls__ebufn_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__ebufn_2 A TE_B VGND VNB VPB VPWR Z
 M1000 a_84_48# A VGND VNB nshort w=640000u l=150000u
@@ -26,4 +41,3 @@
 M1011 Z a_84_48# a_33_368# VPB phighvt w=1.12e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/ebufn/sky130_fd_sc_ls__ebufn_4.spice b/cells/ebufn/sky130_fd_sc_ls__ebufn_4.spice
index 875a0b5..48833c1 100644
--- a/cells/ebufn/sky130_fd_sc_ls__ebufn_4.spice
+++ b/cells/ebufn/sky130_fd_sc_ls__ebufn_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__ebufn_4 A TE_B VGND VNB VPB VPWR Z
 M1000 a_208_74# TE_B VPWR VPB phighvt w=1.12e+06u l=150000u
@@ -42,4 +57,3 @@
 M1019 a_348_368# a_27_368# Z VPB phighvt w=1.12e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/ebufn/sky130_fd_sc_ls__ebufn_8.spice b/cells/ebufn/sky130_fd_sc_ls__ebufn_8.spice
index b6e935e..f8228b7 100644
--- a/cells/ebufn/sky130_fd_sc_ls__ebufn_8.spice
+++ b/cells/ebufn/sky130_fd_sc_ls__ebufn_8.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__ebufn_8 A TE_B VGND VNB VPB VPWR Z
 M1000 VGND a_833_48# a_27_74# VNB nshort w=740000u l=150000u
@@ -78,4 +93,3 @@
 M1037 a_27_74# a_833_48# VGND VNB nshort w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/edfxbp/sky130_fd_sc_ls__edfxbp_1.spice b/cells/edfxbp/sky130_fd_sc_ls__edfxbp_1.spice
index 37b2fcf..fad5d78 100644
--- a/cells/edfxbp/sky130_fd_sc_ls__edfxbp_1.spice
+++ b/cells/edfxbp/sky130_fd_sc_ls__edfxbp_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__edfxbp_1 CLK D DE VGND VNB VPB VPWR Q Q_N
 M1000 VPWR a_575_48# a_2206_443# VPB phighvt w=420000u l=150000u
@@ -74,4 +89,3 @@
 M1035 a_27_74# a_575_48# a_527_74# VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/edfxtp/sky130_fd_sc_ls__edfxtp_1.spice b/cells/edfxtp/sky130_fd_sc_ls__edfxtp_1.spice
index 79319de..099d16d 100644
--- a/cells/edfxtp/sky130_fd_sc_ls__edfxtp_1.spice
+++ b/cells/edfxtp/sky130_fd_sc_ls__edfxtp_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__edfxtp_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_ls__edfxtp_1 CLK D DE VGND VNB VPB VPWR Q
 M1000 VGND a_533_61# a_1997_74# VNB nshort w=420000u l=150000u
@@ -70,4 +85,3 @@
 M1033 VGND a_1409_64# a_1349_90# VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/einvn/sky130_fd_sc_ls__einvn_1.spice b/cells/einvn/sky130_fd_sc_ls__einvn_1.spice
index 325cf4a..253c37e 100644
--- a/cells/einvn/sky130_fd_sc_ls__einvn_1.spice
+++ b/cells/einvn/sky130_fd_sc_ls__einvn_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__einvn_1 A TE_B VGND VNB VPB VPWR Z
 M1000 a_281_100# a_22_46# VGND VNB nshort w=740000u l=150000u
@@ -14,4 +29,3 @@
 M1005 VPWR TE_B a_22_46# VPB phighvt w=640000u l=150000u
 +  ad=0p pd=0u as=1.888e+11p ps=1.87e+06u
 .ends
-
diff --git a/cells/einvn/sky130_fd_sc_ls__einvn_2.spice b/cells/einvn/sky130_fd_sc_ls__einvn_2.spice
index 69bfb31..9456ffa 100644
--- a/cells/einvn/sky130_fd_sc_ls__einvn_2.spice
+++ b/cells/einvn/sky130_fd_sc_ls__einvn_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__einvn_2 A TE_B VGND VNB VPB VPWR Z
 M1000 a_227_368# TE_B VPWR VPB phighvt w=1.12e+06u l=150000u
@@ -22,4 +37,3 @@
 M1009 a_115_464# TE_B VGND VNB nshort w=420000u l=150000u
 +  ad=1.197e+11p pd=1.41e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/einvn/sky130_fd_sc_ls__einvn_4.spice b/cells/einvn/sky130_fd_sc_ls__einvn_4.spice
index e727a7a..308395c 100644
--- a/cells/einvn/sky130_fd_sc_ls__einvn_4.spice
+++ b/cells/einvn/sky130_fd_sc_ls__einvn_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__einvn_4 A TE_B VGND VNB VPB VPWR Z
 M1000 a_281_74# A Z VNB nshort w=740000u l=150000u
@@ -38,4 +53,3 @@
 M1017 a_241_368# TE_B VPWR VPB phighvt w=1.12e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/einvn/sky130_fd_sc_ls__einvn_8.spice b/cells/einvn/sky130_fd_sc_ls__einvn_8.spice
index 266f945..953a6c0 100644
--- a/cells/einvn/sky130_fd_sc_ls__einvn_8.spice
+++ b/cells/einvn/sky130_fd_sc_ls__einvn_8.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__einvn_8 A TE_B VGND VNB VPB VPWR Z
 M1000 VPWR TE_B a_239_368# VPB phighvt w=1.12e+06u l=150000u
@@ -70,4 +85,3 @@
 M1033 a_293_74# a_126_74# VGND VNB nshort w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/einvp/sky130_fd_sc_ls__einvp_1.spice b/cells/einvp/sky130_fd_sc_ls__einvp_1.spice
index eb3616d..bb8847a 100644
--- a/cells/einvp/sky130_fd_sc_ls__einvp_1.spice
+++ b/cells/einvp/sky130_fd_sc_ls__einvp_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__einvp_1 A TE VGND VNB VPB VPWR Z
 M1000 VPWR TE a_44_549# VPB phighvt w=420000u l=150000u
@@ -14,4 +29,3 @@
 M1005 a_310_392# a_44_549# VPWR VPB phighvt w=1e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/einvp/sky130_fd_sc_ls__einvp_2.spice b/cells/einvp/sky130_fd_sc_ls__einvp_2.spice
index 0f7d1ac..ba0def4 100644
--- a/cells/einvp/sky130_fd_sc_ls__einvp_2.spice
+++ b/cells/einvp/sky130_fd_sc_ls__einvp_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__einvp_2 A TE VGND VNB VPB VPWR Z
 M1000 a_27_368# a_263_323# VPWR VPB phighvt w=1.12e+06u l=150000u
@@ -22,4 +37,3 @@
 M1009 VGND TE a_263_323# VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=1.197e+11p ps=1.41e+06u
 .ends
-
diff --git a/cells/einvp/sky130_fd_sc_ls__einvp_4.spice b/cells/einvp/sky130_fd_sc_ls__einvp_4.spice
index 771c876..78195d0 100644
--- a/cells/einvp/sky130_fd_sc_ls__einvp_4.spice
+++ b/cells/einvp/sky130_fd_sc_ls__einvp_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__einvp_4 A TE VGND VNB VPB VPWR Z
 M1000 a_27_368# A Z VPB phighvt w=1.12e+06u l=150000u
@@ -38,4 +53,3 @@
 M1017 VGND TE a_27_74# VNB nshort w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/einvp/sky130_fd_sc_ls__einvp_8.spice b/cells/einvp/sky130_fd_sc_ls__einvp_8.spice
index fa817bd..9cb9cd9 100644
--- a/cells/einvp/sky130_fd_sc_ls__einvp_8.spice
+++ b/cells/einvp/sky130_fd_sc_ls__einvp_8.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__einvp_8 A TE VGND VNB VPB VPWR Z
 M1000 a_27_368# A Z VPB phighvt w=1.12e+06u l=150000u
@@ -70,4 +85,3 @@
 M1033 VGND TE a_802_323# VNB nshort w=740000u l=150000u
 +  ad=0p pd=0u as=2.146e+11p ps=2.06e+06u
 .ends
-
diff --git a/cells/fa/sky130_fd_sc_ls__fa_1.spice b/cells/fa/sky130_fd_sc_ls__fa_1.spice
index c2d5a06..f7cd605 100644
--- a/cells/fa/sky130_fd_sc_ls__fa_1.spice
+++ b/cells/fa/sky130_fd_sc_ls__fa_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__fa_1 A B CIN VGND VNB VPB VPWR COUT SUM
 M1000 a_69_260# CIN a_318_389# VPB phighvt w=1e+06u l=150000u
@@ -58,4 +73,3 @@
 M1027 a_936_75# A VGND VNB nshort w=640000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/fa/sky130_fd_sc_ls__fa_2.spice b/cells/fa/sky130_fd_sc_ls__fa_2.spice
index 9607a99..5450b92 100644
--- a/cells/fa/sky130_fd_sc_ls__fa_2.spice
+++ b/cells/fa/sky130_fd_sc_ls__fa_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__fa_2 A B CIN VGND VNB VPB VPWR COUT SUM
 M1000 a_1205_79# B a_1119_79# VNB nshort w=740000u l=150000u
@@ -66,4 +81,3 @@
 M1031 a_992_347# a_336_347# a_701_79# VNB nshort w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/fa/sky130_fd_sc_ls__fa_4.spice b/cells/fa/sky130_fd_sc_ls__fa_4.spice
index 6e1f512..0d40f8a 100644
--- a/cells/fa/sky130_fd_sc_ls__fa_4.spice
+++ b/cells/fa/sky130_fd_sc_ls__fa_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__fa_4 A B CIN VGND VNB VPB VPWR COUT SUM
 M1000 a_535_347# B a_418_74# VPB phighvt w=1e+06u l=150000u
@@ -82,4 +97,3 @@
 M1039 VGND A a_1238_74# VNB nshort w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/fah/sky130_fd_sc_ls__fah_1.spice b/cells/fah/sky130_fd_sc_ls__fah_1.spice
index 2049bf1..31ee226 100644
--- a/cells/fah/sky130_fd_sc_ls__fah_1.spice
+++ b/cells/fah/sky130_fd_sc_ls__fah_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__fah_1 A B CI VGND VNB VPB VPWR COUT SUM
 M1000 VPWR B a_879_55# VPB phighvt w=1.12e+06u l=150000u
@@ -66,4 +81,3 @@
 M1031 a_83_21# a_811_379# a_231_132# VNB nshort w=640000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/fah/sky130_fd_sc_ls__fah_2.spice b/cells/fah/sky130_fd_sc_ls__fah_2.spice
index 484d95a..32cfaf8 100644
--- a/cells/fah/sky130_fd_sc_ls__fah_2.spice
+++ b/cells/fah/sky130_fd_sc_ls__fah_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__fah_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_ls__fah_2 A B CI VGND VNB VPB VPWR COUT SUM
 M1000 a_481_379# B VPWR VPB phighvt w=1.12e+06u l=150000u
@@ -74,4 +89,3 @@
 M1035 VGND a_1451_424# COUT VNB nshort w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/fah/sky130_fd_sc_ls__fah_4.spice b/cells/fah/sky130_fd_sc_ls__fah_4.spice
index d3926d9..cdd75d8 100644
--- a/cells/fah/sky130_fd_sc_ls__fah_4.spice
+++ b/cells/fah/sky130_fd_sc_ls__fah_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__fah_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_ls__fah_4 A B CI VGND VNB VPB VPWR COUT SUM
 M1000 a_200_74# a_586_257# a_528_362# VPB phighvt w=840000u l=150000u
@@ -90,4 +105,3 @@
 M1043 VGND a_1278_102# SUM VNB nshort w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/fahcin/sky130_fd_sc_ls__fahcin_1.spice b/cells/fahcin/sky130_fd_sc_ls__fahcin_1.spice
index 6479151..f040454 100644
--- a/cells/fahcin/sky130_fd_sc_ls__fahcin_1.spice
+++ b/cells/fahcin/sky130_fd_sc_ls__fahcin_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__fahcin_1 A B CIN VGND VNB VPB VPWR COUT SUM
 M1000 a_1854_368# a_430_418# a_2004_136# VPB phighvt w=840000u l=150000u
@@ -66,4 +81,3 @@
 M1031 a_1854_368# CIN VGND VNB nshort w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/fahcon/sky130_fd_sc_ls__fahcon_1.spice b/cells/fahcon/sky130_fd_sc_ls__fahcon_1.spice
index 7351eb9..f753bec 100644
--- a/cells/fahcon/sky130_fd_sc_ls__fahcon_1.spice
+++ b/cells/fahcon/sky130_fd_sc_ls__fahcon_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__fahcon_1 A B CI VGND VNB VPB VPWR COUT_N SUM
 M1000 a_27_100# B a_369_365# VPB phighvt w=840000u l=150000u
@@ -66,4 +81,3 @@
 M1031 VPWR a_1606_368# a_1719_368# VPB phighvt w=1e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/fill/sky130_fd_sc_ls__fill_1.spice b/cells/fill/sky130_fd_sc_ls__fill_1.spice
index 729392a..3194749 100644
--- a/cells/fill/sky130_fd_sc_ls__fill_1.spice
+++ b/cells/fill/sky130_fd_sc_ls__fill_1.spice
@@ -1,5 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__fill_1 VGND VNB VPB VPWR
 .ends
-
diff --git a/cells/fill/sky130_fd_sc_ls__fill_2.spice b/cells/fill/sky130_fd_sc_ls__fill_2.spice
index 4c4809c..d413268 100644
--- a/cells/fill/sky130_fd_sc_ls__fill_2.spice
+++ b/cells/fill/sky130_fd_sc_ls__fill_2.spice
@@ -1,5 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__fill_2 VGND VNB VPB VPWR
 .ends
-
diff --git a/cells/fill/sky130_fd_sc_ls__fill_4.spice b/cells/fill/sky130_fd_sc_ls__fill_4.spice
index 5877a2a..b136c09 100644
--- a/cells/fill/sky130_fd_sc_ls__fill_4.spice
+++ b/cells/fill/sky130_fd_sc_ls__fill_4.spice
@@ -1,5 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__fill_4 VGND VNB VPB VPWR
 .ends
-
diff --git a/cells/fill/sky130_fd_sc_ls__fill_8.spice b/cells/fill/sky130_fd_sc_ls__fill_8.spice
index 9ea7dbf..d3fccd4 100644
--- a/cells/fill/sky130_fd_sc_ls__fill_8.spice
+++ b/cells/fill/sky130_fd_sc_ls__fill_8.spice
@@ -1,5 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__fill_8 VGND VNB VPB VPWR
 .ends
-
diff --git a/cells/fill_diode/sky130_fd_sc_ls__fill_diode_2.spice b/cells/fill_diode/sky130_fd_sc_ls__fill_diode_2.spice
index 9da75a6..3be3fec 100644
--- a/cells/fill_diode/sky130_fd_sc_ls__fill_diode_2.spice
+++ b/cells/fill_diode/sky130_fd_sc_ls__fill_diode_2.spice
@@ -1,5 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__fill_diode_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_ls__fill_diode_2 VGND VNB VPB VPWR
 .ends
-
diff --git a/cells/fill_diode/sky130_fd_sc_ls__fill_diode_4.spice b/cells/fill_diode/sky130_fd_sc_ls__fill_diode_4.spice
index a117a61..8b07931 100644
--- a/cells/fill_diode/sky130_fd_sc_ls__fill_diode_4.spice
+++ b/cells/fill_diode/sky130_fd_sc_ls__fill_diode_4.spice
@@ -1,5 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__fill_diode_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_ls__fill_diode_4 VGND VNB VPB VPWR
 .ends
-
diff --git a/cells/fill_diode/sky130_fd_sc_ls__fill_diode_8.spice b/cells/fill_diode/sky130_fd_sc_ls__fill_diode_8.spice
index 49c2a65..03df84e 100644
--- a/cells/fill_diode/sky130_fd_sc_ls__fill_diode_8.spice
+++ b/cells/fill_diode/sky130_fd_sc_ls__fill_diode_8.spice
@@ -1,5 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__fill_diode_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_ls__fill_diode_8 VGND VNB VPB VPWR
 .ends
-
diff --git a/cells/ha/sky130_fd_sc_ls__ha_1.spice b/cells/ha/sky130_fd_sc_ls__ha_1.spice
index 03060b9..933fbba 100644
--- a/cells/ha/sky130_fd_sc_ls__ha_1.spice
+++ b/cells/ha/sky130_fd_sc_ls__ha_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__ha_1 A B VGND VNB VPB VPWR COUT SUM
 M1000 a_695_119# B a_239_294# VNB nshort w=640000u l=150000u
@@ -30,4 +45,3 @@
 M1013 a_305_130# A VGND VNB nshort w=640000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/ha/sky130_fd_sc_ls__ha_2.spice b/cells/ha/sky130_fd_sc_ls__ha_2.spice
index 13930bf..38e35ae 100644
--- a/cells/ha/sky130_fd_sc_ls__ha_2.spice
+++ b/cells/ha/sky130_fd_sc_ls__ha_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__ha_2 A B VGND VNB VPB VPWR COUT SUM
 M1000 a_278_74# A VGND VNB nshort w=740000u l=150000u
@@ -38,4 +53,3 @@
 M1017 COUT a_27_74# VGND VNB nshort w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/ha/sky130_fd_sc_ls__ha_4.spice b/cells/ha/sky130_fd_sc_ls__ha_4.spice
index 6eedfe6..f8b6261 100644
--- a/cells/ha/sky130_fd_sc_ls__ha_4.spice
+++ b/cells/ha/sky130_fd_sc_ls__ha_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__ha_4 A B VGND VNB VPB VPWR COUT SUM
 M1000 VGND B a_27_125# VNB nshort w=640000u l=150000u
@@ -74,4 +89,3 @@
 M1035 a_435_99# B a_707_119# VNB nshort w=640000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/inv/sky130_fd_sc_ls__inv_1.spice b/cells/inv/sky130_fd_sc_ls__inv_1.spice
index 8a59b56..9e4702c 100644
--- a/cells/inv/sky130_fd_sc_ls__inv_1.spice
+++ b/cells/inv/sky130_fd_sc_ls__inv_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__inv_1 A VGND VNB VPB VPWR Y
 M1000 Y A VPWR VPB phighvt w=1.12e+06u l=150000u
@@ -6,4 +21,3 @@
 M1001 Y A VGND VNB nshort w=740000u l=150000u
 +  ad=2.109e+11p pd=2.05e+06u as=2.627e+11p ps=2.19e+06u
 .ends
-
diff --git a/cells/inv/sky130_fd_sc_ls__inv_16.spice b/cells/inv/sky130_fd_sc_ls__inv_16.spice
index 54f3307..fdd8239 100644
--- a/cells/inv/sky130_fd_sc_ls__inv_16.spice
+++ b/cells/inv/sky130_fd_sc_ls__inv_16.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__inv_16 A VGND VNB VPB VPWR Y
 M1000 VPWR A Y VPB phighvt w=1.12e+06u l=150000u
@@ -66,4 +81,3 @@
 M1031 Y A VGND VNB nshort w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/inv/sky130_fd_sc_ls__inv_2.spice b/cells/inv/sky130_fd_sc_ls__inv_2.spice
index afef6a0..0d553c5 100644
--- a/cells/inv/sky130_fd_sc_ls__inv_2.spice
+++ b/cells/inv/sky130_fd_sc_ls__inv_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__inv_2 A VGND VNB VPB VPWR Y
 M1000 Y A VPWR VPB phighvt w=1.12e+06u l=150000u
@@ -10,4 +25,3 @@
 M1003 VGND A Y VNB nshort w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/inv/sky130_fd_sc_ls__inv_4.spice b/cells/inv/sky130_fd_sc_ls__inv_4.spice
index 35f1b04..0770a95 100644
--- a/cells/inv/sky130_fd_sc_ls__inv_4.spice
+++ b/cells/inv/sky130_fd_sc_ls__inv_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__inv_4 A VGND VNB VPB VPWR Y
 M1000 Y A VPWR VPB phighvt w=1.12e+06u l=150000u
@@ -18,4 +33,3 @@
 M1007 VPWR A Y VPB phighvt w=1.12e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/inv/sky130_fd_sc_ls__inv_8.spice b/cells/inv/sky130_fd_sc_ls__inv_8.spice
index 14f58ee..d480301 100644
--- a/cells/inv/sky130_fd_sc_ls__inv_8.spice
+++ b/cells/inv/sky130_fd_sc_ls__inv_8.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__inv_8 A VGND VNB VPB VPWR Y
 M1000 VPWR A Y VPB phighvt w=1.12e+06u l=150000u
@@ -34,4 +49,3 @@
 M1015 VGND A Y VNB nshort w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/maj3/sky130_fd_sc_ls__maj3_1.spice b/cells/maj3/sky130_fd_sc_ls__maj3_1.spice
index 66e8d4d..41e59ef 100644
--- a/cells/maj3/sky130_fd_sc_ls__maj3_1.spice
+++ b/cells/maj3/sky130_fd_sc_ls__maj3_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__maj3_1 A B C VGND VNB VPB VPWR X
 M1000 a_598_384# A VPWR VPB phighvt w=1e+06u l=150000u
@@ -30,4 +45,3 @@
 M1013 a_403_136# B a_84_74# VNB nshort w=640000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/maj3/sky130_fd_sc_ls__maj3_2.spice b/cells/maj3/sky130_fd_sc_ls__maj3_2.spice
index 82d9981..2f39142 100644
--- a/cells/maj3/sky130_fd_sc_ls__maj3_2.spice
+++ b/cells/maj3/sky130_fd_sc_ls__maj3_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__maj3_2 A B C VGND VNB VPB VPWR X
 M1000 VPWR C a_584_347# VPB phighvt w=1e+06u l=150000u
@@ -34,4 +49,3 @@
 M1015 a_584_347# B a_87_264# VPB phighvt w=1e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/maj3/sky130_fd_sc_ls__maj3_4.spice b/cells/maj3/sky130_fd_sc_ls__maj3_4.spice
index e58b32b..9e83c08 100644
--- a/cells/maj3/sky130_fd_sc_ls__maj3_4.spice
+++ b/cells/maj3/sky130_fd_sc_ls__maj3_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__maj3_4 A B C VGND VNB VPB VPWR X
 M1000 VPWR a_219_392# X VPB phighvt w=1.12e+06u l=150000u
@@ -66,4 +81,3 @@
 M1031 X a_219_392# VGND VNB nshort w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/mux2/sky130_fd_sc_ls__mux2_1.spice b/cells/mux2/sky130_fd_sc_ls__mux2_1.spice
index d100f10..2c6cc74 100644
--- a/cells/mux2/sky130_fd_sc_ls__mux2_1.spice
+++ b/cells/mux2/sky130_fd_sc_ls__mux2_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__mux2_1 A0 A1 S VGND VNB VPB VPWR X
 M1000 a_443_74# A0 a_304_74# VNB nshort w=740000u l=150000u
@@ -26,4 +41,3 @@
 M1011 a_304_74# A0 a_223_368# VPB phighvt w=1e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/mux2/sky130_fd_sc_ls__mux2_2.spice b/cells/mux2/sky130_fd_sc_ls__mux2_2.spice
index 2e52cb7..33d2f9b 100644
--- a/cells/mux2/sky130_fd_sc_ls__mux2_2.spice
+++ b/cells/mux2/sky130_fd_sc_ls__mux2_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__mux2_2 A0 A1 S VGND VNB VPB VPWR X
 M1000 VPWR S a_27_368# VPB phighvt w=1e+06u l=150000u
@@ -30,4 +45,3 @@
 M1013 VGND a_116_368# X VNB nshort w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/mux2/sky130_fd_sc_ls__mux2_4.spice b/cells/mux2/sky130_fd_sc_ls__mux2_4.spice
index 4f400b6..90a78f8 100644
--- a/cells/mux2/sky130_fd_sc_ls__mux2_4.spice
+++ b/cells/mux2/sky130_fd_sc_ls__mux2_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__mux2_4 A0 A1 S VGND VNB VPB VPWR X
 M1000 a_937_119# a_27_368# VGND VNB nshort w=640000u l=150000u
@@ -54,4 +69,3 @@
 M1025 VGND S a_27_368# VNB nshort w=640000u l=150000u
 +  ad=0p pd=0u as=1.824e+11p ps=1.85e+06u
 .ends
-
diff --git a/cells/mux2i/sky130_fd_sc_ls__mux2i_1.spice b/cells/mux2i/sky130_fd_sc_ls__mux2i_1.spice
index ddf0165..c957589 100644
--- a/cells/mux2i/sky130_fd_sc_ls__mux2i_1.spice
+++ b/cells/mux2i/sky130_fd_sc_ls__mux2i_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__mux2i_1 A0 A1 S VGND VNB VPB VPWR Y
 M1000 a_426_74# a_114_74# VGND VNB nshort w=740000u l=150000u
@@ -22,4 +37,3 @@
 M1009 VGND S a_225_74# VNB nshort w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/mux2i/sky130_fd_sc_ls__mux2i_2.spice b/cells/mux2i/sky130_fd_sc_ls__mux2i_2.spice
index fe05222..75a7185 100644
--- a/cells/mux2i/sky130_fd_sc_ls__mux2i_2.spice
+++ b/cells/mux2i/sky130_fd_sc_ls__mux2i_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__mux2i_2 A0 A1 S VGND VNB VPB VPWR Y
 M1000 VGND a_922_72# a_115_74# VNB nshort w=740000u l=150000u
@@ -38,4 +53,3 @@
 M1017 a_922_72# S VPWR VPB phighvt w=1e+06u l=150000u
 +  ad=2.95e+11p pd=2.59e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/mux2i/sky130_fd_sc_ls__mux2i_4.spice b/cells/mux2i/sky130_fd_sc_ls__mux2i_4.spice
index 678913b..9f81b4a 100644
--- a/cells/mux2i/sky130_fd_sc_ls__mux2i_4.spice
+++ b/cells/mux2i/sky130_fd_sc_ls__mux2i_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__mux2i_4 A0 A1 S VGND VNB VPB VPWR Y
 M1000 Y A1 a_116_368# VPB phighvt w=1.12e+06u l=150000u
@@ -72,4 +87,3 @@
 M1034 a_114_85# A1 Y VNB nshort w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/mux4/sky130_fd_sc_ls__mux4_1.spice b/cells/mux4/sky130_fd_sc_ls__mux4_1.spice
index b4afd10..540408b 100644
--- a/cells/mux4/sky130_fd_sc_ls__mux4_1.spice
+++ b/cells/mux4/sky130_fd_sc_ls__mux4_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__mux4_1 A0 A1 A2 A3 S0 S1 VGND VNB VPB VPWR X
 M1000 VGND A1 a_450_74# VNB nshort w=640000u l=150000u
@@ -54,4 +69,3 @@
 M1025 VGND A3 a_979_74# VNB nshort w=640000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/mux4/sky130_fd_sc_ls__mux4_2.spice b/cells/mux4/sky130_fd_sc_ls__mux4_2.spice
index ce93a2e..1bc735a 100644
--- a/cells/mux4/sky130_fd_sc_ls__mux4_2.spice
+++ b/cells/mux4/sky130_fd_sc_ls__mux4_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__mux4_2 A0 A1 A2 A3 S0 S1 VGND VNB VPB VPWR X
 M1000 VPWR A2 a_1152_392# VPB phighvt w=1e+06u l=150000u
@@ -58,4 +73,3 @@
 M1027 VPWR a_1429_74# X VPB phighvt w=1.12e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/mux4/sky130_fd_sc_ls__mux4_4.spice b/cells/mux4/sky130_fd_sc_ls__mux4_4.spice
index 703e945..5b8b88e 100644
--- a/cells/mux4/sky130_fd_sc_ls__mux4_4.spice
+++ b/cells/mux4/sky130_fd_sc_ls__mux4_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__mux4_4 A0 A1 A2 A3 S0 S1 VGND VNB VPB VPWR X
 M1000 a_296_392# A0 VPWR VPB phighvt w=1e+06u l=150000u
@@ -106,4 +121,3 @@
 M1051 a_1278_121# a_758_306# a_1191_121# VNB nshort w=640000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/nand2/sky130_fd_sc_ls__nand2_1.spice b/cells/nand2/sky130_fd_sc_ls__nand2_1.spice
index 96fe2ac..6e5cc58 100644
--- a/cells/nand2/sky130_fd_sc_ls__nand2_1.spice
+++ b/cells/nand2/sky130_fd_sc_ls__nand2_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__nand2_1 A B VGND VNB VPB VPWR Y
 M1000 Y A a_117_74# VNB nshort w=740000u l=150000u
@@ -10,4 +25,3 @@
 M1003 a_117_74# B VGND VNB nshort w=740000u l=150000u
 +  ad=0p pd=0u as=2.109e+11p ps=2.05e+06u
 .ends
-
diff --git a/cells/nand2/sky130_fd_sc_ls__nand2_2.spice b/cells/nand2/sky130_fd_sc_ls__nand2_2.spice
index 62622c8..4e09185 100644
--- a/cells/nand2/sky130_fd_sc_ls__nand2_2.spice
+++ b/cells/nand2/sky130_fd_sc_ls__nand2_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__nand2_2 A B VGND VNB VPB VPWR Y
 M1000 Y A a_27_74# VNB nshort w=740000u l=150000u
@@ -18,4 +33,3 @@
 M1007 VGND B a_27_74# VNB nshort w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/nand2/sky130_fd_sc_ls__nand2_4.spice b/cells/nand2/sky130_fd_sc_ls__nand2_4.spice
index 1ce1f5f..14b2633 100644
--- a/cells/nand2/sky130_fd_sc_ls__nand2_4.spice
+++ b/cells/nand2/sky130_fd_sc_ls__nand2_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__nand2_4 A B VGND VNB VPB VPWR Y
 M1000 Y A VPWR VPB phighvt w=1.12e+06u l=150000u
@@ -26,4 +41,3 @@
 M1011 a_27_74# B VGND VNB nshort w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/nand2/sky130_fd_sc_ls__nand2_8.spice b/cells/nand2/sky130_fd_sc_ls__nand2_8.spice
index cb3cdfc..808e651 100644
--- a/cells/nand2/sky130_fd_sc_ls__nand2_8.spice
+++ b/cells/nand2/sky130_fd_sc_ls__nand2_8.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__nand2_8 A B VGND VNB VPB VPWR Y
 M1000 VGND B a_27_74# VNB nshort w=740000u l=150000u
@@ -50,4 +65,3 @@
 M1023 Y A VPWR VPB phighvt w=1.12e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/nand2b/sky130_fd_sc_ls__nand2b_1.spice b/cells/nand2b/sky130_fd_sc_ls__nand2b_1.spice
index 18417df..f2aff5f 100644
--- a/cells/nand2b/sky130_fd_sc_ls__nand2b_1.spice
+++ b/cells/nand2b/sky130_fd_sc_ls__nand2b_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__nand2b_1 A_N B VGND VNB VPB VPWR Y
 M1000 a_269_74# B VGND VNB nshort w=740000u l=150000u
@@ -14,4 +29,3 @@
 M1005 Y a_27_112# a_269_74# VNB nshort w=740000u l=150000u
 +  ad=3.182e+11p pd=2.34e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/nand2b/sky130_fd_sc_ls__nand2b_2.spice b/cells/nand2b/sky130_fd_sc_ls__nand2b_2.spice
index 8990a1a..9421807 100644
--- a/cells/nand2b/sky130_fd_sc_ls__nand2b_2.spice
+++ b/cells/nand2b/sky130_fd_sc_ls__nand2b_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__nand2b_2 A_N B VGND VNB VPB VPWR Y
 M1000 VPWR a_27_74# Y VPB phighvt w=1.12e+06u l=150000u
@@ -22,4 +37,3 @@
 M1009 a_242_74# a_27_74# Y VNB nshort w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/nand2b/sky130_fd_sc_ls__nand2b_4.spice b/cells/nand2b/sky130_fd_sc_ls__nand2b_4.spice
index 5f138c3..fe0404e 100644
--- a/cells/nand2b/sky130_fd_sc_ls__nand2b_4.spice
+++ b/cells/nand2b/sky130_fd_sc_ls__nand2b_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__nand2b_4 A_N B VGND VNB VPB VPWR Y
 M1000 VGND B a_243_74# VNB nshort w=740000u l=150000u
@@ -32,4 +47,3 @@
 M1014 a_243_74# B VGND VNB nshort w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/nand3/sky130_fd_sc_ls__nand3_1.spice b/cells/nand3/sky130_fd_sc_ls__nand3_1.spice
index 20116fa..aa604f0 100644
--- a/cells/nand3/sky130_fd_sc_ls__nand3_1.spice
+++ b/cells/nand3/sky130_fd_sc_ls__nand3_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__nand3_1 A B C VGND VNB VPB VPWR Y
 M1000 a_233_74# B a_155_74# VNB nshort w=740000u l=150000u
@@ -14,4 +29,3 @@
 M1005 Y A a_233_74# VNB nshort w=740000u l=150000u
 +  ad=2.109e+11p pd=2.05e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/nand3/sky130_fd_sc_ls__nand3_2.spice b/cells/nand3/sky130_fd_sc_ls__nand3_2.spice
index e976bc9..886fa4d 100644
--- a/cells/nand3/sky130_fd_sc_ls__nand3_2.spice
+++ b/cells/nand3/sky130_fd_sc_ls__nand3_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__nand3_2 A B C VGND VNB VPB VPWR Y
 M1000 a_283_74# A Y VNB nshort w=740000u l=150000u
@@ -26,4 +41,3 @@
 M1011 a_27_74# C VGND VNB nshort w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/nand3/sky130_fd_sc_ls__nand3_4.spice b/cells/nand3/sky130_fd_sc_ls__nand3_4.spice
index f4642d7..dfe82f5 100644
--- a/cells/nand3/sky130_fd_sc_ls__nand3_4.spice
+++ b/cells/nand3/sky130_fd_sc_ls__nand3_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__nand3_4 A B C VGND VNB VPB VPWR Y
 M1000 a_456_82# C VGND VNB nshort w=740000u l=150000u
@@ -38,4 +53,3 @@
 M1017 Y C VPWR VPB phighvt w=1.12e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/nand3b/sky130_fd_sc_ls__nand3b_1.spice b/cells/nand3b/sky130_fd_sc_ls__nand3b_1.spice
index 22a320c..55ab02f 100644
--- a/cells/nand3b/sky130_fd_sc_ls__nand3b_1.spice
+++ b/cells/nand3b/sky130_fd_sc_ls__nand3b_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__nand3b_1 A_N B C VGND VNB VPB VPWR Y
 M1000 Y C VPWR VPB phighvt w=1.12e+06u l=150000u
@@ -18,4 +33,3 @@
 M1007 a_347_78# B a_269_78# VNB nshort w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/nand3b/sky130_fd_sc_ls__nand3b_2.spice b/cells/nand3b/sky130_fd_sc_ls__nand3b_2.spice
index eb26324..c24ca4a 100644
--- a/cells/nand3b/sky130_fd_sc_ls__nand3b_2.spice
+++ b/cells/nand3b/sky130_fd_sc_ls__nand3b_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__nand3b_2 A_N B C VGND VNB VPB VPWR Y
 M1000 Y C VPWR VPB phighvt w=1.12e+06u l=150000u
@@ -30,4 +45,3 @@
 M1013 VPWR B Y VPB phighvt w=1.12e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/nand3b/sky130_fd_sc_ls__nand3b_4.spice b/cells/nand3b/sky130_fd_sc_ls__nand3b_4.spice
index e1436ac..35a181f 100644
--- a/cells/nand3b/sky130_fd_sc_ls__nand3b_4.spice
+++ b/cells/nand3b/sky130_fd_sc_ls__nand3b_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__nand3b_4 A_N B C VGND VNB VPB VPWR Y
 M1000 VPWR A_N a_89_172# VPB phighvt w=840000u l=150000u
@@ -44,4 +59,3 @@
 M1020 VGND A_N a_89_172# VNB nshort w=740000u l=150000u
 +  ad=0p pd=0u as=1.9515e+11p ps=2.05e+06u
 .ends
-
diff --git a/cells/nand4/sky130_fd_sc_ls__nand4_1.spice b/cells/nand4/sky130_fd_sc_ls__nand4_1.spice
index b34afb3..ae859a7 100644
--- a/cells/nand4/sky130_fd_sc_ls__nand4_1.spice
+++ b/cells/nand4/sky130_fd_sc_ls__nand4_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__nand4_1 A B C D VGND VNB VPB VPWR Y
 M1000 a_181_74# D VGND VNB nshort w=740000u l=150000u
@@ -18,4 +33,3 @@
 M1007 Y A a_373_74# VNB nshort w=740000u l=150000u
 +  ad=2.085e+11p pd=2.05e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/nand4/sky130_fd_sc_ls__nand4_2.spice b/cells/nand4/sky130_fd_sc_ls__nand4_2.spice
index 38c5f9f..4cd452c 100644
--- a/cells/nand4/sky130_fd_sc_ls__nand4_2.spice
+++ b/cells/nand4/sky130_fd_sc_ls__nand4_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__nand4_2 A B C D VGND VNB VPB VPWR Y
 M1000 Y C VPWR VPB phighvt w=1.12e+06u l=150000u
@@ -34,4 +49,3 @@
 M1015 a_515_74# A Y VNB nshort w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/nand4/sky130_fd_sc_ls__nand4_4.spice b/cells/nand4/sky130_fd_sc_ls__nand4_4.spice
index 1eca2be..e4e33d4 100644
--- a/cells/nand4/sky130_fd_sc_ls__nand4_4.spice
+++ b/cells/nand4/sky130_fd_sc_ls__nand4_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__nand4_4 A B C D VGND VNB VPB VPWR Y
 M1000 Y D VPWR VPB phighvt w=1.12e+06u l=150000u
@@ -50,4 +65,3 @@
 M1023 a_923_74# A Y VNB nshort w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/nand4b/sky130_fd_sc_ls__nand4b_1.spice b/cells/nand4b/sky130_fd_sc_ls__nand4b_1.spice
index 6ecdec3..4d116bc 100644
--- a/cells/nand4b/sky130_fd_sc_ls__nand4b_1.spice
+++ b/cells/nand4b/sky130_fd_sc_ls__nand4b_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__nand4b_1 A_N B C D VGND VNB VPB VPWR Y
 M1000 VPWR A_N a_27_112# VPB phighvt w=840000u l=150000u
@@ -22,4 +37,3 @@
 M1009 a_341_74# C a_263_74# VNB nshort w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/nand4b/sky130_fd_sc_ls__nand4b_2.spice b/cells/nand4b/sky130_fd_sc_ls__nand4b_2.spice
index ece331c..93aa1b0 100644
--- a/cells/nand4b/sky130_fd_sc_ls__nand4b_2.spice
+++ b/cells/nand4b/sky130_fd_sc_ls__nand4b_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__nand4b_2 A_N B C D VGND VNB VPB VPWR Y
 M1000 a_719_123# C a_490_74# VNB nshort w=740000u l=150000u
@@ -38,4 +53,3 @@
 M1017 Y a_27_74# a_225_74# VNB nshort w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/nand4b/sky130_fd_sc_ls__nand4b_4.spice b/cells/nand4b/sky130_fd_sc_ls__nand4b_4.spice
index ea03d7a..0787bbc 100644
--- a/cells/nand4b/sky130_fd_sc_ls__nand4b_4.spice
+++ b/cells/nand4b/sky130_fd_sc_ls__nand4b_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__nand4b_4 A_N B C D VGND VNB VPB VPWR Y
 M1000 VPWR A_N a_27_158# VPB phighvt w=840000u l=150000u
@@ -56,4 +71,3 @@
 M1026 VGND D a_1025_158# VNB nshort w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/nand4bb/sky130_fd_sc_ls__nand4bb_1.spice b/cells/nand4bb/sky130_fd_sc_ls__nand4bb_1.spice
index e742ef1..31e7443 100644
--- a/cells/nand4bb/sky130_fd_sc_ls__nand4bb_1.spice
+++ b/cells/nand4bb/sky130_fd_sc_ls__nand4bb_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__nand4bb_1 A_N B_N C D VGND VNB VPB VPWR Y
 M1000 a_226_398# B_N VGND VNB nshort w=550000u l=150000u
@@ -26,4 +41,3 @@
 M1011 Y D VPWR VPB phighvt w=1.12e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/nand4bb/sky130_fd_sc_ls__nand4bb_2.spice b/cells/nand4bb/sky130_fd_sc_ls__nand4bb_2.spice
index f7e6640..3cca4de 100644
--- a/cells/nand4bb/sky130_fd_sc_ls__nand4bb_2.spice
+++ b/cells/nand4bb/sky130_fd_sc_ls__nand4bb_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__nand4bb_2 A_N B_N C D VGND VNB VPB VPWR Y
 M1000 a_373_74# a_231_74# a_678_74# VNB nshort w=740000u l=150000u
@@ -42,4 +57,3 @@
 M1019 a_678_74# C a_886_74# VNB nshort w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/nand4bb/sky130_fd_sc_ls__nand4bb_4.spice b/cells/nand4bb/sky130_fd_sc_ls__nand4bb_4.spice
index dd29029..39bea1c 100644
--- a/cells/nand4bb/sky130_fd_sc_ls__nand4bb_4.spice
+++ b/cells/nand4bb/sky130_fd_sc_ls__nand4bb_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__nand4bb_4 A_N B_N C D VGND VNB VPB VPWR Y
 M1000 a_374_74# a_27_114# Y VNB nshort w=740000u l=150000u
@@ -78,4 +93,3 @@
 M1037 VPWR C Y VPB phighvt w=1.12e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/nor2/sky130_fd_sc_ls__nor2_1.spice b/cells/nor2/sky130_fd_sc_ls__nor2_1.spice
index aa75fc7..86748f5 100644
--- a/cells/nor2/sky130_fd_sc_ls__nor2_1.spice
+++ b/cells/nor2/sky130_fd_sc_ls__nor2_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__nor2_1 A B VGND VNB VPB VPWR Y
 M1000 Y B a_116_368# VPB phighvt w=1.12e+06u l=150000u
@@ -10,4 +25,3 @@
 M1003 Y A VGND VNB nshort w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/nor2/sky130_fd_sc_ls__nor2_2.spice b/cells/nor2/sky130_fd_sc_ls__nor2_2.spice
index 8deaecf..3ab076f 100644
--- a/cells/nor2/sky130_fd_sc_ls__nor2_2.spice
+++ b/cells/nor2/sky130_fd_sc_ls__nor2_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__nor2_2 A B VGND VNB VPB VPWR Y
 M1000 a_35_368# A VPWR VPB phighvt w=1.12e+06u l=150000u
@@ -14,4 +29,3 @@
 M1005 VPWR A a_35_368# VPB phighvt w=1.12e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/nor2/sky130_fd_sc_ls__nor2_4.spice b/cells/nor2/sky130_fd_sc_ls__nor2_4.spice
index 662d012..c6ba57c 100644
--- a/cells/nor2/sky130_fd_sc_ls__nor2_4.spice
+++ b/cells/nor2/sky130_fd_sc_ls__nor2_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__nor2_4 A B VGND VNB VPB VPWR Y
 M1000 a_27_368# A VPWR VPB phighvt w=1.12e+06u l=150000u
@@ -26,4 +41,3 @@
 M1011 a_27_368# B Y VPB phighvt w=1.12e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/nor2/sky130_fd_sc_ls__nor2_8.spice b/cells/nor2/sky130_fd_sc_ls__nor2_8.spice
index a455cf5..2c14977 100644
--- a/cells/nor2/sky130_fd_sc_ls__nor2_8.spice
+++ b/cells/nor2/sky130_fd_sc_ls__nor2_8.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__nor2_8 A B VGND VNB VPB VPWR Y
 M1000 a_27_368# A VPWR VPB phighvt w=1.12e+06u l=150000u
@@ -50,4 +65,3 @@
 M1023 a_27_368# A VPWR VPB phighvt w=1.12e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/nor2b/sky130_fd_sc_ls__nor2b_1.spice b/cells/nor2b/sky130_fd_sc_ls__nor2b_1.spice
index df7b188..aa6de6c 100644
--- a/cells/nor2b/sky130_fd_sc_ls__nor2b_1.spice
+++ b/cells/nor2b/sky130_fd_sc_ls__nor2b_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__nor2b_1 A B_N VGND VNB VPB VPWR Y
 M1000 Y a_27_112# a_278_368# VPB phighvt w=1.12e+06u l=150000u
@@ -14,4 +29,3 @@
 M1005 Y A VGND VNB nshort w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/nor2b/sky130_fd_sc_ls__nor2b_2.spice b/cells/nor2b/sky130_fd_sc_ls__nor2b_2.spice
index f2fdb42..73c1433 100644
--- a/cells/nor2b/sky130_fd_sc_ls__nor2b_2.spice
+++ b/cells/nor2b/sky130_fd_sc_ls__nor2b_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__nor2b_2 A B_N VGND VNB VPB VPWR Y
 M1000 VPWR A a_228_368# VPB phighvt w=1.12e+06u l=150000u
@@ -22,4 +37,3 @@
 M1009 a_228_368# a_27_392# Y VPB phighvt w=1.12e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/nor2b/sky130_fd_sc_ls__nor2b_4.spice b/cells/nor2b/sky130_fd_sc_ls__nor2b_4.spice
index fd841c8..f966e9f 100644
--- a/cells/nor2b/sky130_fd_sc_ls__nor2b_4.spice
+++ b/cells/nor2b/sky130_fd_sc_ls__nor2b_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__nor2b_4 A B_N VGND VNB VPB VPWR Y
 M1000 Y A VGND VNB nshort w=740000u l=150000u
@@ -32,4 +47,3 @@
 M1014 a_353_323# B_N VGND VNB nshort w=740000u l=150000u
 +  ad=5.18e+11p pd=2.88e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/nor3/sky130_fd_sc_ls__nor3_1.spice b/cells/nor3/sky130_fd_sc_ls__nor3_1.spice
index a439acd..d2bfaf4 100644
--- a/cells/nor3/sky130_fd_sc_ls__nor3_1.spice
+++ b/cells/nor3/sky130_fd_sc_ls__nor3_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__nor3_1 A B C VGND VNB VPB VPWR Y
 M1000 Y C a_198_368# VPB phighvt w=1.12e+06u l=150000u
@@ -14,4 +29,3 @@
 M1005 VGND B Y VNB nshort w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/nor3/sky130_fd_sc_ls__nor3_2.spice b/cells/nor3/sky130_fd_sc_ls__nor3_2.spice
index 97dff0d..71df657 100644
--- a/cells/nor3/sky130_fd_sc_ls__nor3_2.spice
+++ b/cells/nor3/sky130_fd_sc_ls__nor3_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__nor3_2 A B C VGND VNB VPB VPWR Y
 M1000 a_306_368# A VPWR VPB phighvt w=1.12e+06u l=150000u
@@ -20,4 +35,3 @@
 M1008 Y B VGND VNB nshort w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/nor3/sky130_fd_sc_ls__nor3_4.spice b/cells/nor3/sky130_fd_sc_ls__nor3_4.spice
index 146a547..26cdaf6 100644
--- a/cells/nor3/sky130_fd_sc_ls__nor3_4.spice
+++ b/cells/nor3/sky130_fd_sc_ls__nor3_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__nor3_4 A B C VGND VNB VPB VPWR Y
 M1000 VPWR A a_27_368# VPB phighvt w=1.12e+06u l=150000u
@@ -38,4 +53,3 @@
 M1017 Y C a_295_368# VPB phighvt w=1.12e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/nor3b/sky130_fd_sc_ls__nor3b_1.spice b/cells/nor3b/sky130_fd_sc_ls__nor3b_1.spice
index fdeeb14..f08f43c 100644
--- a/cells/nor3b/sky130_fd_sc_ls__nor3b_1.spice
+++ b/cells/nor3b/sky130_fd_sc_ls__nor3b_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__nor3b_1 A B C_N VGND VNB VPB VPWR Y
 M1000 Y a_27_112# a_344_368# VPB phighvt w=1.12e+06u l=150000u
@@ -18,4 +33,3 @@
 M1007 Y a_27_112# VGND VNB nshort w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/nor3b/sky130_fd_sc_ls__nor3b_2.spice b/cells/nor3b/sky130_fd_sc_ls__nor3b_2.spice
index 1faf6c3..061b6d5 100644
--- a/cells/nor3b/sky130_fd_sc_ls__nor3b_2.spice
+++ b/cells/nor3b/sky130_fd_sc_ls__nor3b_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__nor3b_2 A B C_N VGND VNB VPB VPWR Y
 M1000 VGND a_27_392# Y VNB nshort w=740000u l=150000u
@@ -30,4 +45,3 @@
 M1013 a_495_368# A VPWR VPB phighvt w=1.12e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/nor3b/sky130_fd_sc_ls__nor3b_4.spice b/cells/nor3b/sky130_fd_sc_ls__nor3b_4.spice
index 390e5de..d498ec7 100644
--- a/cells/nor3b/sky130_fd_sc_ls__nor3b_4.spice
+++ b/cells/nor3b/sky130_fd_sc_ls__nor3b_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__nor3b_4 A B C_N VGND VNB VPB VPWR Y
 M1000 VPWR A a_126_368# VPB phighvt w=1.12e+06u l=150000u
@@ -56,4 +71,3 @@
 M1026 VGND a_468_264# Y VNB nshort w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/nor4/sky130_fd_sc_ls__nor4_1.spice b/cells/nor4/sky130_fd_sc_ls__nor4_1.spice
index 7dcb2fb..86cc226 100644
--- a/cells/nor4/sky130_fd_sc_ls__nor4_1.spice
+++ b/cells/nor4/sky130_fd_sc_ls__nor4_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__nor4_1 A B C D VGND VNB VPB VPWR Y
 M1000 Y A VGND VNB nshort w=740000u l=150000u
@@ -18,4 +33,3 @@
 M1007 a_144_368# A VPWR VPB phighvt w=1.12e+06u l=150000u
 +  ad=0p pd=0u as=3.304e+11p ps=2.83e+06u
 .ends
-
diff --git a/cells/nor4/sky130_fd_sc_ls__nor4_2.spice b/cells/nor4/sky130_fd_sc_ls__nor4_2.spice
index b80686c..4ab29cf 100644
--- a/cells/nor4/sky130_fd_sc_ls__nor4_2.spice
+++ b/cells/nor4/sky130_fd_sc_ls__nor4_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__nor4_2 A B C D VGND VNB VPB VPWR Y
 M1000 VGND A Y VNB nshort w=740000u l=150000u
@@ -26,4 +41,3 @@
 M1011 a_116_368# D Y VPB phighvt w=1.12e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/nor4/sky130_fd_sc_ls__nor4_4.spice b/cells/nor4/sky130_fd_sc_ls__nor4_4.spice
index 4e45093..d1caafd 100644
--- a/cells/nor4/sky130_fd_sc_ls__nor4_4.spice
+++ b/cells/nor4/sky130_fd_sc_ls__nor4_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__nor4_4 A B C D VGND VNB VPB VPWR Y
 M1000 a_27_368# D Y VPB phighvt w=1.12e+06u l=150000u
@@ -50,4 +65,3 @@
 M1023 a_496_368# B a_879_368# VPB phighvt w=1.12e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/nor4b/sky130_fd_sc_ls__nor4b_1.spice b/cells/nor4b/sky130_fd_sc_ls__nor4b_1.spice
index f52fbc4..adeb076 100644
--- a/cells/nor4b/sky130_fd_sc_ls__nor4b_1.spice
+++ b/cells/nor4b/sky130_fd_sc_ls__nor4b_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__nor4b_1 A B C D_N VGND VNB VPB VPWR Y
 M1000 Y C VGND VNB nshort w=740000u l=150000u
@@ -22,4 +37,3 @@
 M1009 Y A VGND VNB nshort w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/nor4b/sky130_fd_sc_ls__nor4b_2.spice b/cells/nor4b/sky130_fd_sc_ls__nor4b_2.spice
index 6f3907b..b870558 100644
--- a/cells/nor4b/sky130_fd_sc_ls__nor4b_2.spice
+++ b/cells/nor4b/sky130_fd_sc_ls__nor4b_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__nor4b_2 A B C D_N VGND VNB VPB VPWR Y
 M1000 a_498_368# C a_229_368# VPB phighvt w=1.12e+06u l=150000u
@@ -38,4 +53,3 @@
 M1017 VGND D_N a_27_392# VNB nshort w=640000u l=150000u
 +  ad=0p pd=0u as=1.824e+11p ps=1.85e+06u
 .ends
-
diff --git a/cells/nor4b/sky130_fd_sc_ls__nor4b_4.spice b/cells/nor4b/sky130_fd_sc_ls__nor4b_4.spice
index f0828e1..8130f02 100644
--- a/cells/nor4b/sky130_fd_sc_ls__nor4b_4.spice
+++ b/cells/nor4b/sky130_fd_sc_ls__nor4b_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__nor4b_4 A B C D_N VGND VNB VPB VPWR Y
 M1000 Y a_47_88# VGND VNB nshort w=740000u l=150000u
@@ -72,4 +87,3 @@
 M1034 VGND C Y VNB nshort w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/nor4bb/sky130_fd_sc_ls__nor4bb_1.spice b/cells/nor4bb/sky130_fd_sc_ls__nor4bb_1.spice
index 40b4dfa..57786e7 100644
--- a/cells/nor4bb/sky130_fd_sc_ls__nor4bb_1.spice
+++ b/cells/nor4bb/sky130_fd_sc_ls__nor4bb_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__nor4bb_1 A B C_N D_N VGND VNB VPB VPWR Y
 M1000 a_313_368# A VPWR VPB phighvt w=1.12e+06u l=150000u
@@ -26,4 +41,3 @@
 M1011 Y a_611_244# a_530_368# VPB phighvt w=1.12e+06u l=150000u
 +  ad=3.304e+11p pd=2.83e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/nor4bb/sky130_fd_sc_ls__nor4bb_2.spice b/cells/nor4bb/sky130_fd_sc_ls__nor4bb_2.spice
index b9099aa..2372de7 100644
--- a/cells/nor4bb/sky130_fd_sc_ls__nor4bb_2.spice
+++ b/cells/nor4bb/sky130_fd_sc_ls__nor4bb_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__nor4bb_2 A B C_N D_N VGND VNB VPB VPWR Y
 M1000 Y a_311_124# VGND VNB nshort w=740000u l=150000u
@@ -42,4 +57,3 @@
 M1019 Y B VGND VNB nshort w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/nor4bb/sky130_fd_sc_ls__nor4bb_4.spice b/cells/nor4bb/sky130_fd_sc_ls__nor4bb_4.spice
index 75b3b18..293dcd1 100644
--- a/cells/nor4bb/sky130_fd_sc_ls__nor4bb_4.spice
+++ b/cells/nor4bb/sky130_fd_sc_ls__nor4bb_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__nor4bb_4 A B C_N D_N VGND VNB VPB VPWR Y
 M1000 VPWR A a_116_368# VPB phighvt w=1.12e+06u l=150000u
@@ -78,4 +93,3 @@
 M1037 Y B VGND VNB nshort w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o2111a/sky130_fd_sc_ls__o2111a_1.spice b/cells/o2111a/sky130_fd_sc_ls__o2111a_1.spice
index f345730..7211123 100644
--- a/cells/o2111a/sky130_fd_sc_ls__o2111a_1.spice
+++ b/cells/o2111a/sky130_fd_sc_ls__o2111a_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__o2111a_1 A1 A2 B1 C1 D1 VGND VNB VPB VPWR X
 M1000 VPWR A1 a_600_381# VPB phighvt w=1e+06u l=150000u
@@ -26,4 +41,3 @@
 M1011 a_471_74# B1 a_393_74# VNB nshort w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o2111a/sky130_fd_sc_ls__o2111a_2.spice b/cells/o2111a/sky130_fd_sc_ls__o2111a_2.spice
index 8965ec4..9eb50a9 100644
--- a/cells/o2111a/sky130_fd_sc_ls__o2111a_2.spice
+++ b/cells/o2111a/sky130_fd_sc_ls__o2111a_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__o2111a_2 A1 A2 B1 C1 D1 VGND VNB VPB VPWR X
 M1000 a_54_74# A2 VGND VNB nshort w=740000u l=150000u
@@ -30,4 +45,3 @@
 M1013 a_236_368# A2 a_152_368# VPB phighvt w=1e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o2111a/sky130_fd_sc_ls__o2111a_4.spice b/cells/o2111a/sky130_fd_sc_ls__o2111a_4.spice
index 1e7b56b..4728ec2 100644
--- a/cells/o2111a/sky130_fd_sc_ls__o2111a_4.spice
+++ b/cells/o2111a/sky130_fd_sc_ls__o2111a_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__o2111a_4 A1 A2 B1 C1 D1 VGND VNB VPB VPWR X
 M1000 VPWR a_27_392# X VPB phighvt w=1.12e+06u l=150000u
@@ -58,4 +73,3 @@
 M1027 VPWR C1 a_27_392# VPB phighvt w=840000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o2111ai/sky130_fd_sc_ls__o2111ai_1.spice b/cells/o2111ai/sky130_fd_sc_ls__o2111ai_1.spice
index 46948e5..3fb3c8c 100644
--- a/cells/o2111ai/sky130_fd_sc_ls__o2111ai_1.spice
+++ b/cells/o2111ai/sky130_fd_sc_ls__o2111ai_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__o2111ai_1 A1 A2 B1 C1 D1 VGND VNB VPB VPWR Y
 M1000 Y B1 VPWR VPB phighvt w=1.12e+06u l=150000u
@@ -22,4 +37,3 @@
 M1009 VPWR A1 a_490_368# VPB phighvt w=1.12e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o2111ai/sky130_fd_sc_ls__o2111ai_2.spice b/cells/o2111ai/sky130_fd_sc_ls__o2111ai_2.spice
index 4495697..1e31f1b 100644
--- a/cells/o2111ai/sky130_fd_sc_ls__o2111ai_2.spice
+++ b/cells/o2111ai/sky130_fd_sc_ls__o2111ai_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__o2111ai_2 A1 A2 B1 C1 D1 VGND VNB VPB VPWR Y
 M1000 a_510_74# A2 VGND VNB nshort w=740000u l=150000u
@@ -42,4 +57,3 @@
 M1019 Y C1 VPWR VPB phighvt w=1.12e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o2111ai/sky130_fd_sc_ls__o2111ai_4.spice b/cells/o2111ai/sky130_fd_sc_ls__o2111ai_4.spice
index 6750049..05d8115 100644
--- a/cells/o2111ai/sky130_fd_sc_ls__o2111ai_4.spice
+++ b/cells/o2111ai/sky130_fd_sc_ls__o2111ai_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__o2111ai_4 A1 A2 B1 C1 D1 VGND VNB VPB VPWR Y
 M1000 a_954_368# A1 VPWR VPB phighvt w=1.12e+06u l=150000u
@@ -70,4 +85,3 @@
 M1033 a_27_74# C1 a_472_74# VNB nshort w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o211a/sky130_fd_sc_ls__o211a_1.spice b/cells/o211a/sky130_fd_sc_ls__o211a_1.spice
index 84f00f2..a24578e 100644
--- a/cells/o211a/sky130_fd_sc_ls__o211a_1.spice
+++ b/cells/o211a/sky130_fd_sc_ls__o211a_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__o211a_1 A1 A2 B1 C1 VGND VNB VPB VPWR X
 M1000 a_398_392# A1 VPWR VPB phighvt w=1e+06u l=150000u
@@ -22,4 +37,3 @@
 M1009 a_83_264# C1 VPWR VPB phighvt w=1e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o211a/sky130_fd_sc_ls__o211a_2.spice b/cells/o211a/sky130_fd_sc_ls__o211a_2.spice
index 11f8014..b8915ff 100644
--- a/cells/o211a/sky130_fd_sc_ls__o211a_2.spice
+++ b/cells/o211a/sky130_fd_sc_ls__o211a_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__o211a_2 A1 A2 B1 C1 VGND VNB VPB VPWR X
 M1000 VPWR a_27_368# X VPB phighvt w=1.12e+06u l=150000u
@@ -26,4 +41,3 @@
 M1011 a_314_368# A2 a_27_368# VPB phighvt w=1e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o211a/sky130_fd_sc_ls__o211a_4.spice b/cells/o211a/sky130_fd_sc_ls__o211a_4.spice
index ed98457..3106e2b 100644
--- a/cells/o211a/sky130_fd_sc_ls__o211a_4.spice
+++ b/cells/o211a/sky130_fd_sc_ls__o211a_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__o211a_4 A1 A2 B1 C1 VGND VNB VPB VPWR X
 M1000 a_968_391# A1 VPWR VPB phighvt w=1e+06u l=150000u
@@ -50,4 +65,3 @@
 M1023 VGND a_91_48# X VNB nshort w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o211ai/sky130_fd_sc_ls__o211ai_1.spice b/cells/o211ai/sky130_fd_sc_ls__o211ai_1.spice
index aff9d66..eab29e9 100644
--- a/cells/o211ai/sky130_fd_sc_ls__o211ai_1.spice
+++ b/cells/o211ai/sky130_fd_sc_ls__o211ai_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__o211ai_1 A1 A2 B1 C1 VGND VNB VPB VPWR Y
 M1000 Y A2 a_116_368# VPB phighvt w=1.12e+06u l=150000u
@@ -18,4 +33,3 @@
 M1007 Y C1 a_311_74# VNB nshort w=740000u l=150000u
 +  ad=4.588e+11p pd=2.72e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/o211ai/sky130_fd_sc_ls__o211ai_2.spice b/cells/o211ai/sky130_fd_sc_ls__o211ai_2.spice
index 169197d..5a3ad75 100644
--- a/cells/o211ai/sky130_fd_sc_ls__o211ai_2.spice
+++ b/cells/o211ai/sky130_fd_sc_ls__o211ai_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__o211ai_2 A1 A2 B1 C1 VGND VNB VPB VPWR Y
 M1000 a_303_84# B1 a_30_84# VNB nshort w=740000u l=150000u
@@ -34,4 +49,3 @@
 M1015 VPWR C1 Y VPB phighvt w=1.12e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o211ai/sky130_fd_sc_ls__o211ai_4.spice b/cells/o211ai/sky130_fd_sc_ls__o211ai_4.spice
index 1425348..5edf932 100644
--- a/cells/o211ai/sky130_fd_sc_ls__o211ai_4.spice
+++ b/cells/o211ai/sky130_fd_sc_ls__o211ai_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__o211ai_4 A1 A2 B1 C1 VGND VNB VPB VPWR Y
 M1000 Y C1 a_834_74# VNB nshort w=740000u l=150000u
@@ -58,4 +73,3 @@
 M1027 Y C1 a_834_74# VNB nshort w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o21a/sky130_fd_sc_ls__o21a_1.spice b/cells/o21a/sky130_fd_sc_ls__o21a_1.spice
index b270cf0..303b930 100644
--- a/cells/o21a/sky130_fd_sc_ls__o21a_1.spice
+++ b/cells/o21a/sky130_fd_sc_ls__o21a_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__o21a_1 A1 A2 B1 VGND VNB VPB VPWR X
 M1000 VPWR A1 a_376_387# VPB phighvt w=1e+06u l=150000u
@@ -18,4 +33,3 @@
 M1007 VGND A2 a_320_74# VNB nshort w=640000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o21a/sky130_fd_sc_ls__o21a_2.spice b/cells/o21a/sky130_fd_sc_ls__o21a_2.spice
index 0631878..af65b7b 100644
--- a/cells/o21a/sky130_fd_sc_ls__o21a_2.spice
+++ b/cells/o21a/sky130_fd_sc_ls__o21a_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__o21a_2 A1 A2 B1 VGND VNB VPB VPWR X
 M1000 a_244_368# A2 a_160_368# VPB phighvt w=1e+06u l=150000u
@@ -22,4 +37,3 @@
 M1009 VPWR B1 a_244_368# VPB phighvt w=1e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o21a/sky130_fd_sc_ls__o21a_4.spice b/cells/o21a/sky130_fd_sc_ls__o21a_4.spice
index ed1ad5e..a82a264 100644
--- a/cells/o21a/sky130_fd_sc_ls__o21a_4.spice
+++ b/cells/o21a/sky130_fd_sc_ls__o21a_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__o21a_4 A1 A2 B1 VGND VNB VPB VPWR X
 M1000 a_116_387# A2 a_216_387# VPB phighvt w=1e+06u l=150000u
@@ -42,4 +57,3 @@
 M1019 X a_216_387# VGND VNB nshort w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o21ai/sky130_fd_sc_ls__o21ai_1.spice b/cells/o21ai/sky130_fd_sc_ls__o21ai_1.spice
index 199343c..a06f0ea 100644
--- a/cells/o21ai/sky130_fd_sc_ls__o21ai_1.spice
+++ b/cells/o21ai/sky130_fd_sc_ls__o21ai_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__o21ai_1 A1 A2 B1 VGND VNB VPB VPWR Y
 M1000 a_162_368# A1 VPWR VPB phighvt w=1.12e+06u l=150000u
@@ -14,4 +29,3 @@
 M1005 VPWR B1 Y VPB phighvt w=1.12e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o21ai/sky130_fd_sc_ls__o21ai_2.spice b/cells/o21ai/sky130_fd_sc_ls__o21ai_2.spice
index f164129..3f01b3f 100644
--- a/cells/o21ai/sky130_fd_sc_ls__o21ai_2.spice
+++ b/cells/o21ai/sky130_fd_sc_ls__o21ai_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__o21ai_2 A1 A2 B1 VGND VNB VPB VPWR Y
 M1000 VPWR A1 a_116_368# VPB phighvt w=1.12e+06u l=150000u
@@ -26,4 +41,3 @@
 M1011 VGND A2 a_27_74# VNB nshort w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o21ai/sky130_fd_sc_ls__o21ai_4.spice b/cells/o21ai/sky130_fd_sc_ls__o21ai_4.spice
index 598b45c..170e268 100644
--- a/cells/o21ai/sky130_fd_sc_ls__o21ai_4.spice
+++ b/cells/o21ai/sky130_fd_sc_ls__o21ai_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__o21ai_4 A1 A2 B1 VGND VNB VPB VPWR Y
 M1000 VGND A2 a_27_74# VNB nshort w=740000u l=150000u
@@ -46,4 +61,3 @@
 M1021 VGND A2 a_27_74# VNB nshort w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o21ba/sky130_fd_sc_ls__o21ba_1.spice b/cells/o21ba/sky130_fd_sc_ls__o21ba_1.spice
index 2d7ecb7..05960f3 100644
--- a/cells/o21ba/sky130_fd_sc_ls__o21ba_1.spice
+++ b/cells/o21ba/sky130_fd_sc_ls__o21ba_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__o21ba_1 A1 A2 B1_N VGND VNB VPB VPWR X
 M1000 X a_200_392# VPWR VPB phighvt w=1.12e+06u l=150000u
@@ -22,4 +37,3 @@
 M1009 X a_200_392# VGND VNB nshort w=740000u l=150000u
 +  ad=2.109e+11p pd=2.05e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/o21ba/sky130_fd_sc_ls__o21ba_2.spice b/cells/o21ba/sky130_fd_sc_ls__o21ba_2.spice
index 58fac49..83589c9 100644
--- a/cells/o21ba/sky130_fd_sc_ls__o21ba_2.spice
+++ b/cells/o21ba/sky130_fd_sc_ls__o21ba_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__o21ba_2 A1 A2 B1_N VGND VNB VPB VPWR X
 M1000 VGND a_177_48# X VNB nshort w=740000u l=150000u
@@ -26,4 +41,3 @@
 M1011 a_487_74# a_27_74# a_177_48# VNB nshort w=740000u l=150000u
 +  ad=0p pd=0u as=2.035e+11p ps=2.03e+06u
 .ends
-
diff --git a/cells/o21ba/sky130_fd_sc_ls__o21ba_4.spice b/cells/o21ba/sky130_fd_sc_ls__o21ba_4.spice
index 4cf1ffc..555160f 100644
--- a/cells/o21ba/sky130_fd_sc_ls__o21ba_4.spice
+++ b/cells/o21ba/sky130_fd_sc_ls__o21ba_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__o21ba_4 A1 A2 B1_N VGND VNB VPB VPWR X
 M1000 X a_193_48# VPWR VPB phighvt w=1.12e+06u l=150000u
@@ -46,4 +61,3 @@
 M1021 a_892_392# A2 a_193_48# VPB phighvt w=1e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o21bai/sky130_fd_sc_ls__o21bai_1.spice b/cells/o21bai/sky130_fd_sc_ls__o21bai_1.spice
index 0867bd7..78f6ae1 100644
--- a/cells/o21bai/sky130_fd_sc_ls__o21bai_1.spice
+++ b/cells/o21bai/sky130_fd_sc_ls__o21bai_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__o21bai_1 A1 A2 B1_N VGND VNB VPB VPWR Y
 M1000 VPWR B1_N a_27_74# VPB phighvt w=840000u l=150000u
@@ -18,4 +33,3 @@
 M1007 Y a_27_74# VPWR VPB phighvt w=1.12e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o21bai/sky130_fd_sc_ls__o21bai_2.spice b/cells/o21bai/sky130_fd_sc_ls__o21bai_2.spice
index 4b9260e..c276b3f 100644
--- a/cells/o21bai/sky130_fd_sc_ls__o21bai_2.spice
+++ b/cells/o21bai/sky130_fd_sc_ls__o21bai_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__o21bai_2 A1 A2 B1_N VGND VNB VPB VPWR Y
 M1000 a_507_368# A1 VPWR VPB phighvt w=1.12e+06u l=150000u
@@ -30,4 +45,3 @@
 M1013 Y a_27_74# a_225_74# VNB nshort w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o21bai/sky130_fd_sc_ls__o21bai_4.spice b/cells/o21bai/sky130_fd_sc_ls__o21bai_4.spice
index a5fb78b..beb3c0c 100644
--- a/cells/o21bai/sky130_fd_sc_ls__o21bai_4.spice
+++ b/cells/o21bai/sky130_fd_sc_ls__o21bai_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__o21bai_4 A1 A2 B1_N VGND VNB VPB VPWR Y
 M1000 VPWR a_828_48# Y VPB phighvt w=1.12e+06u l=150000u
@@ -52,4 +67,3 @@
 M1024 a_27_74# a_828_48# Y VNB nshort w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o221a/sky130_fd_sc_ls__o221a_1.spice b/cells/o221a/sky130_fd_sc_ls__o221a_1.spice
index dcf7312..5eaf1f8 100644
--- a/cells/o221a/sky130_fd_sc_ls__o221a_1.spice
+++ b/cells/o221a/sky130_fd_sc_ls__o221a_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__o221a_1 A1 A2 B1 B2 C1 VGND VNB VPB VPWR X
 M1000 a_245_94# A1 VGND VNB nshort w=640000u l=150000u
@@ -26,4 +41,3 @@
 M1011 a_245_94# B2 a_456_74# VNB nshort w=640000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o221a/sky130_fd_sc_ls__o221a_2.spice b/cells/o221a/sky130_fd_sc_ls__o221a_2.spice
index 02a02df..3311f34 100644
--- a/cells/o221a/sky130_fd_sc_ls__o221a_2.spice
+++ b/cells/o221a/sky130_fd_sc_ls__o221a_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__o221a_2 A1 A2 B1 B2 C1 VGND VNB VPB VPWR X
 M1000 X a_27_368# VPWR VPB phighvt w=1.12e+06u l=150000u
@@ -30,4 +45,3 @@
 M1013 a_27_368# B2 a_332_368# VPB phighvt w=1e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o221a/sky130_fd_sc_ls__o221a_4.spice b/cells/o221a/sky130_fd_sc_ls__o221a_4.spice
index 6758da6..02c4915 100644
--- a/cells/o221a/sky130_fd_sc_ls__o221a_4.spice
+++ b/cells/o221a/sky130_fd_sc_ls__o221a_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__o221a_4 A1 A2 B1 B2 C1 VGND VNB VPB VPWR X
 M1000 a_27_125# B1 a_300_125# VNB nshort w=640000u l=150000u
@@ -58,4 +73,3 @@
 M1027 VPWR A1 a_763_387# VPB phighvt w=1e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o221ai/sky130_fd_sc_ls__o221ai_1.spice b/cells/o221ai/sky130_fd_sc_ls__o221ai_1.spice
index ac29f75..2961115 100644
--- a/cells/o221ai/sky130_fd_sc_ls__o221ai_1.spice
+++ b/cells/o221ai/sky130_fd_sc_ls__o221ai_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__o221ai_1 A1 A2 B1 B2 C1 VGND VNB VPB VPWR Y
 M1000 VPWR C1 Y VPB phighvt w=1.12e+06u l=150000u
@@ -22,4 +37,3 @@
 M1009 a_324_368# B1 VPWR VPB phighvt w=1.12e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o221ai/sky130_fd_sc_ls__o221ai_2.spice b/cells/o221ai/sky130_fd_sc_ls__o221ai_2.spice
index 0187764..7f963f9 100644
--- a/cells/o221ai/sky130_fd_sc_ls__o221ai_2.spice
+++ b/cells/o221ai/sky130_fd_sc_ls__o221ai_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__o221ai_2 A1 A2 B1 B2 C1 VGND VNB VPB VPWR Y
 M1000 a_376_368# B1 VPWR VPB phighvt w=1.12e+06u l=150000u
@@ -42,4 +57,3 @@
 M1019 a_311_85# B2 a_27_74# VNB nshort w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o221ai/sky130_fd_sc_ls__o221ai_4.spice b/cells/o221ai/sky130_fd_sc_ls__o221ai_4.spice
index 8cbe665..d5e351c 100644
--- a/cells/o221ai/sky130_fd_sc_ls__o221ai_4.spice
+++ b/cells/o221ai/sky130_fd_sc_ls__o221ai_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__o221ai_4 A1 A2 B1 B2 C1 VGND VNB VPB VPWR Y
 M1000 Y C1 a_27_84# VNB nshort w=740000u l=150000u
@@ -82,4 +97,3 @@
 M1039 a_27_84# C1 Y VNB nshort w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o22a/sky130_fd_sc_ls__o22a_1.spice b/cells/o22a/sky130_fd_sc_ls__o22a_1.spice
index 65bc975..7632c78 100644
--- a/cells/o22a/sky130_fd_sc_ls__o22a_1.spice
+++ b/cells/o22a/sky130_fd_sc_ls__o22a_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__o22a_1 A1 A2 B1 B2 VGND VNB VPB VPWR X
 M1000 a_398_392# B1 VPWR VPB phighvt w=1e+06u l=150000u
@@ -22,4 +37,3 @@
 M1009 VGND a_83_260# X VNB nshort w=740000u l=150000u
 +  ad=0p pd=0u as=2.109e+11p ps=2.05e+06u
 .ends
-
diff --git a/cells/o22a/sky130_fd_sc_ls__o22a_2.spice b/cells/o22a/sky130_fd_sc_ls__o22a_2.spice
index 1f0b11d..293df9d 100644
--- a/cells/o22a/sky130_fd_sc_ls__o22a_2.spice
+++ b/cells/o22a/sky130_fd_sc_ls__o22a_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__o22a_2 A1 A2 B1 B2 VGND VNB VPB VPWR X
 M1000 VPWR a_82_48# X VPB phighvt w=1.12e+06u l=150000u
@@ -26,4 +41,3 @@
 M1011 a_307_74# B2 a_82_48# VNB nshort w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o22a/sky130_fd_sc_ls__o22a_4.spice b/cells/o22a/sky130_fd_sc_ls__o22a_4.spice
index 0e0d265..02522b3 100644
--- a/cells/o22a/sky130_fd_sc_ls__o22a_4.spice
+++ b/cells/o22a/sky130_fd_sc_ls__o22a_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__o22a_4 A1 A2 B1 B2 VGND VNB VPB VPWR X
 M1000 X a_206_392# VPWR VPB phighvt w=1.12e+06u l=150000u
@@ -50,4 +65,3 @@
 M1023 VPWR B1 a_516_392# VPB phighvt w=1e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o22ai/sky130_fd_sc_ls__o22ai_1.spice b/cells/o22ai/sky130_fd_sc_ls__o22ai_1.spice
index 34cf1fe..19f30fb 100644
--- a/cells/o22ai/sky130_fd_sc_ls__o22ai_1.spice
+++ b/cells/o22ai/sky130_fd_sc_ls__o22ai_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__o22ai_1 A1 A2 B1 B2 VGND VNB VPB VPWR Y
 M1000 a_142_368# B1 VPWR VPB phighvt w=1.12e+06u l=150000u
@@ -18,4 +33,3 @@
 M1007 Y B1 a_27_74# VNB nshort w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o22ai/sky130_fd_sc_ls__o22ai_2.spice b/cells/o22ai/sky130_fd_sc_ls__o22ai_2.spice
index 59cedc9..3b6458d 100644
--- a/cells/o22ai/sky130_fd_sc_ls__o22ai_2.spice
+++ b/cells/o22ai/sky130_fd_sc_ls__o22ai_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__o22ai_2 A1 A2 B1 B2 VGND VNB VPB VPWR Y
 M1000 a_27_74# A1 VGND VNB nshort w=740000u l=150000u
@@ -34,4 +49,3 @@
 M1015 a_28_368# B2 Y VPB phighvt w=1.12e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o22ai/sky130_fd_sc_ls__o22ai_4.spice b/cells/o22ai/sky130_fd_sc_ls__o22ai_4.spice
index bbd08e9..0e19c5d 100644
--- a/cells/o22ai/sky130_fd_sc_ls__o22ai_4.spice
+++ b/cells/o22ai/sky130_fd_sc_ls__o22ai_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__o22ai_4 A1 A2 B1 B2 VGND VNB VPB VPWR Y
 M1000 a_877_368# B1 VPWR VPB phighvt w=1.12e+06u l=150000u
@@ -66,4 +81,3 @@
 M1031 VPWR B1 a_877_368# VPB phighvt w=1.12e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o2bb2a/sky130_fd_sc_ls__o2bb2a_1.spice b/cells/o2bb2a/sky130_fd_sc_ls__o2bb2a_1.spice
index f231b02..90f26ae 100644
--- a/cells/o2bb2a/sky130_fd_sc_ls__o2bb2a_1.spice
+++ b/cells/o2bb2a/sky130_fd_sc_ls__o2bb2a_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__o2bb2a_1 A1_N A2_N B1 B2 VGND VNB VPB VPWR X
 M1000 a_233_384# A1_N VPWR VPB phighvt w=840000u l=150000u
@@ -26,4 +41,3 @@
 M1011 VGND B2 a_588_74# VNB nshort w=640000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o2bb2a/sky130_fd_sc_ls__o2bb2a_2.spice b/cells/o2bb2a/sky130_fd_sc_ls__o2bb2a_2.spice
index ff2d84c..7dad4e6 100644
--- a/cells/o2bb2a/sky130_fd_sc_ls__o2bb2a_2.spice
+++ b/cells/o2bb2a/sky130_fd_sc_ls__o2bb2a_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__o2bb2a_2 A1_N A2_N B1 B2 VGND VNB VPB VPWR X
 M1000 a_270_48# A2_N VPWR VPB phighvt w=840000u l=150000u
@@ -30,4 +45,3 @@
 M1013 VGND a_201_392# X VNB nshort w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o2bb2a/sky130_fd_sc_ls__o2bb2a_4.spice b/cells/o2bb2a/sky130_fd_sc_ls__o2bb2a_4.spice
index 31c5fe7..8802c12 100644
--- a/cells/o2bb2a/sky130_fd_sc_ls__o2bb2a_4.spice
+++ b/cells/o2bb2a/sky130_fd_sc_ls__o2bb2a_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__o2bb2a_4 A1_N A2_N B1 B2 VGND VNB VPB VPWR X
 M1000 X a_310_392# VPWR VPB phighvt w=1.12e+06u l=150000u
@@ -50,4 +65,3 @@
 M1023 X a_310_392# VGND VNB nshort w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o2bb2ai/sky130_fd_sc_ls__o2bb2ai_1.spice b/cells/o2bb2ai/sky130_fd_sc_ls__o2bb2ai_1.spice
index ce0c4ee..dfa8c88 100644
--- a/cells/o2bb2ai/sky130_fd_sc_ls__o2bb2ai_1.spice
+++ b/cells/o2bb2ai/sky130_fd_sc_ls__o2bb2ai_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__o2bb2ai_1 A1_N A2_N B1 B2 VGND VNB VPB VPWR Y
 M1000 a_397_74# B1 VGND VNB nshort w=740000u l=150000u
@@ -22,4 +37,3 @@
 M1009 a_114_74# A1_N VGND VNB nshort w=640000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o2bb2ai/sky130_fd_sc_ls__o2bb2ai_2.spice b/cells/o2bb2ai/sky130_fd_sc_ls__o2bb2ai_2.spice
index 3315c1a..f146fed 100644
--- a/cells/o2bb2ai/sky130_fd_sc_ls__o2bb2ai_2.spice
+++ b/cells/o2bb2ai/sky130_fd_sc_ls__o2bb2ai_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__o2bb2ai_2 A1_N A2_N B1 B2 VGND VNB VPB VPWR Y
 M1000 Y B2 a_796_368# VPB phighvt w=1.12e+06u l=150000u
@@ -42,4 +57,3 @@
 M1019 Y a_133_387# a_518_74# VNB nshort w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o2bb2ai/sky130_fd_sc_ls__o2bb2ai_4.spice b/cells/o2bb2ai/sky130_fd_sc_ls__o2bb2ai_4.spice
index e38a09e..9ead0cc 100644
--- a/cells/o2bb2ai/sky130_fd_sc_ls__o2bb2ai_4.spice
+++ b/cells/o2bb2ai/sky130_fd_sc_ls__o2bb2ai_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__o2bb2ai_4 A1_N A2_N B1 B2 VGND VNB VPB VPWR Y
 M1000 a_114_368# A1_N VPWR VPB phighvt w=1.12e+06u l=150000u
@@ -82,4 +97,3 @@
 M1039 VGND B2 a_857_74# VNB nshort w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o311a/sky130_fd_sc_ls__o311a_1.spice b/cells/o311a/sky130_fd_sc_ls__o311a_1.spice
index 0ab914d..3164063 100644
--- a/cells/o311a/sky130_fd_sc_ls__o311a_1.spice
+++ b/cells/o311a/sky130_fd_sc_ls__o311a_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__o311a_1 A1 A2 A3 B1 C1 VGND VNB VPB VPWR X
 M1000 X a_31_387# VPWR VPB phighvt w=1.12e+06u l=150000u
@@ -26,4 +41,3 @@
 M1011 VGND A1 a_209_74# VNB nshort w=640000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o311a/sky130_fd_sc_ls__o311a_2.spice b/cells/o311a/sky130_fd_sc_ls__o311a_2.spice
index 4647930..8262d94 100644
--- a/cells/o311a/sky130_fd_sc_ls__o311a_2.spice
+++ b/cells/o311a/sky130_fd_sc_ls__o311a_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__o311a_2 A1 A2 A3 B1 C1 VGND VNB VPB VPWR X
 M1000 a_135_74# C1 a_32_74# VNB nshort w=740000u l=150000u
@@ -30,4 +45,3 @@
 M1013 a_219_74# A2 VGND VNB nshort w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o311a/sky130_fd_sc_ls__o311a_4.spice b/cells/o311a/sky130_fd_sc_ls__o311a_4.spice
index dcb0b39..8bd5cf2 100644
--- a/cells/o311a/sky130_fd_sc_ls__o311a_4.spice
+++ b/cells/o311a/sky130_fd_sc_ls__o311a_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__o311a_4 A1 A2 A3 B1 C1 VGND VNB VPB VPWR X
 M1000 a_83_244# A3 a_1034_392# VPB phighvt w=1e+06u l=150000u
@@ -58,4 +73,3 @@
 M1027 a_1338_392# A1 VPWR VPB phighvt w=1e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o311ai/sky130_fd_sc_ls__o311ai_1.spice b/cells/o311ai/sky130_fd_sc_ls__o311ai_1.spice
index ae713b5..fc440d9 100644
--- a/cells/o311ai/sky130_fd_sc_ls__o311ai_1.spice
+++ b/cells/o311ai/sky130_fd_sc_ls__o311ai_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__o311ai_1 A1 A2 A3 B1 C1 VGND VNB VPB VPWR Y
 M1000 Y C1 a_469_74# VNB nshort w=740000u l=150000u
@@ -22,4 +37,3 @@
 M1009 a_128_74# A3 VGND VNB nshort w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o311ai/sky130_fd_sc_ls__o311ai_2.spice b/cells/o311ai/sky130_fd_sc_ls__o311ai_2.spice
index 30ef7fb..5c6c251 100644
--- a/cells/o311ai/sky130_fd_sc_ls__o311ai_2.spice
+++ b/cells/o311ai/sky130_fd_sc_ls__o311ai_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__o311ai_2 A1 A2 A3 B1 C1 VGND VNB VPB VPWR Y
 M1000 a_670_74# B1 a_27_74# VNB nshort w=740000u l=150000u
@@ -42,4 +57,3 @@
 M1019 a_670_74# C1 Y VNB nshort w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o311ai/sky130_fd_sc_ls__o311ai_4.spice b/cells/o311ai/sky130_fd_sc_ls__o311ai_4.spice
index ce61468..95b0682 100644
--- a/cells/o311ai/sky130_fd_sc_ls__o311ai_4.spice
+++ b/cells/o311ai/sky130_fd_sc_ls__o311ai_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__o311ai_4 A1 A2 A3 B1 C1 VGND VNB VPB VPWR Y
 M1000 a_841_368# A3 Y VPB phighvt w=1.12e+06u l=150000u
@@ -74,4 +89,3 @@
 M1035 a_459_74# A1 VGND VNB nshort w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o31a/sky130_fd_sc_ls__o31a_1.spice b/cells/o31a/sky130_fd_sc_ls__o31a_1.spice
index bf67fb3..e7eea86 100644
--- a/cells/o31a/sky130_fd_sc_ls__o31a_1.spice
+++ b/cells/o31a/sky130_fd_sc_ls__o31a_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__o31a_1 A1 A2 A3 B1 VGND VNB VPB VPWR X
 M1000 VPWR B1 a_84_48# VPB phighvt w=840000u l=150000u
@@ -22,4 +37,3 @@
 M1009 a_256_368# A1 VPWR VPB phighvt w=1e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o31a/sky130_fd_sc_ls__o31a_2.spice b/cells/o31a/sky130_fd_sc_ls__o31a_2.spice
index 86329fa..4351c28 100644
--- a/cells/o31a/sky130_fd_sc_ls__o31a_2.spice
+++ b/cells/o31a/sky130_fd_sc_ls__o31a_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__o31a_2 A1 A2 A3 B1 VGND VNB VPB VPWR X
 M1000 VGND A2 a_328_74# VNB nshort w=740000u l=150000u
@@ -26,4 +41,3 @@
 M1011 a_55_264# A3 a_430_392# VPB phighvt w=1e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o31a/sky130_fd_sc_ls__o31a_4.spice b/cells/o31a/sky130_fd_sc_ls__o31a_4.spice
index c87d187..bfc1bff 100644
--- a/cells/o31a/sky130_fd_sc_ls__o31a_4.spice
+++ b/cells/o31a/sky130_fd_sc_ls__o31a_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__o31a_4 A1 A2 A3 B1 VGND VNB VPB VPWR X
 M1000 VGND a_86_260# X VNB nshort w=740000u l=150000u
@@ -50,4 +65,3 @@
 M1023 a_699_392# A2 a_968_392# VPB phighvt w=1e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o31ai/sky130_fd_sc_ls__o31ai_1.spice b/cells/o31ai/sky130_fd_sc_ls__o31ai_1.spice
index e5f541e..5c43205 100644
--- a/cells/o31ai/sky130_fd_sc_ls__o31ai_1.spice
+++ b/cells/o31ai/sky130_fd_sc_ls__o31ai_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__o31ai_1 A1 A2 A3 B1 VGND VNB VPB VPWR Y
 M1000 a_114_74# A3 VGND VNB nshort w=740000u l=150000u
@@ -18,4 +33,3 @@
 M1007 a_203_368# A2 a_119_368# VPB phighvt w=1.12e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o31ai/sky130_fd_sc_ls__o31ai_2.spice b/cells/o31ai/sky130_fd_sc_ls__o31ai_2.spice
index fc1746d..aa78db6 100644
--- a/cells/o31ai/sky130_fd_sc_ls__o31ai_2.spice
+++ b/cells/o31ai/sky130_fd_sc_ls__o31ai_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__o31ai_2 A1 A2 A3 B1 VGND VNB VPB VPWR Y
 M1000 VPWR B1 Y VPB phighvt w=1.12e+06u l=150000u
@@ -34,4 +49,3 @@
 M1015 a_28_368# A2 a_297_368# VPB phighvt w=1.12e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o31ai/sky130_fd_sc_ls__o31ai_4.spice b/cells/o31ai/sky130_fd_sc_ls__o31ai_4.spice
index 205fd1e..85f37c7 100644
--- a/cells/o31ai/sky130_fd_sc_ls__o31ai_4.spice
+++ b/cells/o31ai/sky130_fd_sc_ls__o31ai_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__o31ai_4 A1 A2 A3 B1 VGND VNB VPB VPWR Y
 M1000 Y B1 VPWR VPB phighvt w=1.12e+06u l=150000u
@@ -62,4 +77,3 @@
 M1029 VGND A1 a_27_82# VNB nshort w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o32a/sky130_fd_sc_ls__o32a_1.spice b/cells/o32a/sky130_fd_sc_ls__o32a_1.spice
index 4db7e4c..19d347a 100644
--- a/cells/o32a/sky130_fd_sc_ls__o32a_1.spice
+++ b/cells/o32a/sky130_fd_sc_ls__o32a_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__o32a_1 A1 A2 A3 B1 B2 VGND VNB VPB VPWR X
 M1000 a_251_74# B1 a_83_264# VNB nshort w=640000u l=150000u
@@ -26,4 +41,3 @@
 M1011 a_83_264# A3 a_332_368# VPB phighvt w=1e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o32a/sky130_fd_sc_ls__o32a_2.spice b/cells/o32a/sky130_fd_sc_ls__o32a_2.spice
index 88ecb3a..9ee12e3 100644
--- a/cells/o32a/sky130_fd_sc_ls__o32a_2.spice
+++ b/cells/o32a/sky130_fd_sc_ls__o32a_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__o32a_2 A1 A2 A3 B1 B2 VGND VNB VPB VPWR X
 M1000 a_652_368# B2 a_83_264# VPB phighvt w=1e+06u l=150000u
@@ -30,4 +45,3 @@
 M1013 VGND a_83_264# X VNB nshort w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o32a/sky130_fd_sc_ls__o32a_4.spice b/cells/o32a/sky130_fd_sc_ls__o32a_4.spice
index 1d274da..0ad07ca 100644
--- a/cells/o32a/sky130_fd_sc_ls__o32a_4.spice
+++ b/cells/o32a/sky130_fd_sc_ls__o32a_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__o32a_4 A1 A2 A3 B1 B2 VGND VNB VPB VPWR X
 M1000 VPWR B1 a_534_388# VPB phighvt w=1e+06u l=150000u
@@ -58,4 +73,3 @@
 M1027 a_961_392# A3 a_83_256# VPB phighvt w=1e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o32ai/sky130_fd_sc_ls__o32ai_1.spice b/cells/o32ai/sky130_fd_sc_ls__o32ai_1.spice
index 9e23049..effbee3 100644
--- a/cells/o32ai/sky130_fd_sc_ls__o32ai_1.spice
+++ b/cells/o32ai/sky130_fd_sc_ls__o32ai_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__o32ai_1 A1 A2 A3 B1 B2 VGND VNB VPB VPWR Y
 M1000 VPWR A1 a_456_368# VPB phighvt w=1.12e+06u l=150000u
@@ -22,4 +37,3 @@
 M1009 Y B2 a_128_368# VPB phighvt w=1.12e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o32ai/sky130_fd_sc_ls__o32ai_2.spice b/cells/o32ai/sky130_fd_sc_ls__o32ai_2.spice
index fd0ab36..0d7089f 100644
--- a/cells/o32ai/sky130_fd_sc_ls__o32ai_2.spice
+++ b/cells/o32ai/sky130_fd_sc_ls__o32ai_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__o32ai_2 A1 A2 A3 B1 B2 VGND VNB VPB VPWR Y
 M1000 VPWR A1 a_768_368# VPB phighvt w=1.12e+06u l=150000u
@@ -42,4 +57,3 @@
 M1019 a_499_368# A2 a_768_368# VPB phighvt w=1.12e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o32ai/sky130_fd_sc_ls__o32ai_4.spice b/cells/o32ai/sky130_fd_sc_ls__o32ai_4.spice
index 874273d..079a104 100644
--- a/cells/o32ai/sky130_fd_sc_ls__o32ai_4.spice
+++ b/cells/o32ai/sky130_fd_sc_ls__o32ai_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__o32ai_4 A1 A2 A3 B1 B2 VGND VNB VPB VPWR Y
 M1000 a_861_368# A3 Y VPB phighvt w=1.12e+06u l=150000u
@@ -82,4 +97,3 @@
 M1039 a_861_368# A3 Y VPB phighvt w=1.12e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o41a/sky130_fd_sc_ls__o41a_1.spice b/cells/o41a/sky130_fd_sc_ls__o41a_1.spice
index da14395..77319a5 100644
--- a/cells/o41a/sky130_fd_sc_ls__o41a_1.spice
+++ b/cells/o41a/sky130_fd_sc_ls__o41a_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__o41a_1 A1 A2 A3 A4 B1 VGND VNB VPB VPWR X
 M1000 VPWR A1 a_641_368# VPB phighvt w=1.12e+06u l=150000u
@@ -26,4 +41,3 @@
 M1011 a_326_74# A3 VGND VNB nshort w=640000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o41a/sky130_fd_sc_ls__o41a_2.spice b/cells/o41a/sky130_fd_sc_ls__o41a_2.spice
index f346a18..090f11f 100644
--- a/cells/o41a/sky130_fd_sc_ls__o41a_2.spice
+++ b/cells/o41a/sky130_fd_sc_ls__o41a_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__o41a_2 A1 A2 A3 A4 B1 VGND VNB VPB VPWR X
 M1000 X a_428_368# VPWR VPB phighvt w=1.12e+06u l=150000u
@@ -30,4 +45,3 @@
 M1013 a_314_368# A3 a_200_368# VPB phighvt w=1.12e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o41a/sky130_fd_sc_ls__o41a_4.spice b/cells/o41a/sky130_fd_sc_ls__o41a_4.spice
index d2e1e3f..90ed9c3 100644
--- a/cells/o41a/sky130_fd_sc_ls__o41a_4.spice
+++ b/cells/o41a/sky130_fd_sc_ls__o41a_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__o41a_4 A1 A2 A3 A4 B1 VGND VNB VPB VPWR X
 M1000 X a_110_48# VPWR VPB phighvt w=1.12e+06u l=150000u
@@ -58,4 +73,3 @@
 M1027 VPWR A1 a_1213_368# VPB phighvt w=1.12e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o41ai/sky130_fd_sc_ls__o41ai_1.spice b/cells/o41ai/sky130_fd_sc_ls__o41ai_1.spice
index b3155fd..48acc78 100644
--- a/cells/o41ai/sky130_fd_sc_ls__o41ai_1.spice
+++ b/cells/o41ai/sky130_fd_sc_ls__o41ai_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__o41ai_1 A1 A2 A3 A4 B1 VGND VNB VPB VPWR Y
 M1000 a_157_74# A1 VGND VNB nshort w=740000u l=150000u
@@ -22,4 +37,3 @@
 M1009 a_358_368# A3 a_260_368# VPB phighvt w=1.12e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o41ai/sky130_fd_sc_ls__o41ai_2.spice b/cells/o41ai/sky130_fd_sc_ls__o41ai_2.spice
index bf7f405..7bcdaa9 100644
--- a/cells/o41ai/sky130_fd_sc_ls__o41ai_2.spice
+++ b/cells/o41ai/sky130_fd_sc_ls__o41ai_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__o41ai_2 A1 A2 A3 A4 B1 VGND VNB VPB VPWR Y
 M1000 a_132_74# A4 VGND VNB nshort w=740000u l=150000u
@@ -42,4 +57,3 @@
 M1019 Y B1 a_132_74# VNB nshort w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o41ai/sky130_fd_sc_ls__o41ai_4.spice b/cells/o41ai/sky130_fd_sc_ls__o41ai_4.spice
index 036684d..157e6cd 100644
--- a/cells/o41ai/sky130_fd_sc_ls__o41ai_4.spice
+++ b/cells/o41ai/sky130_fd_sc_ls__o41ai_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__o41ai_4 A1 A2 A3 A4 B1 VGND VNB VPB VPWR Y
 M1000 a_339_368# A4 Y VPB phighvt w=1.12e+06u l=150000u
@@ -78,4 +93,3 @@
 M1037 VGND A3 a_27_74# VNB nshort w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/or2/sky130_fd_sc_ls__or2_1.spice b/cells/or2/sky130_fd_sc_ls__or2_1.spice
index ea6ee1d..8fd6cb5 100644
--- a/cells/or2/sky130_fd_sc_ls__or2_1.spice
+++ b/cells/or2/sky130_fd_sc_ls__or2_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__or2_1 A B VGND VNB VPB VPWR X
 M1000 a_152_368# B a_63_368# VPB phighvt w=840000u l=150000u
@@ -14,4 +29,3 @@
 M1005 VPWR A a_152_368# VPB phighvt w=840000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/or2/sky130_fd_sc_ls__or2_2.spice b/cells/or2/sky130_fd_sc_ls__or2_2.spice
index b51c1c2..df47ab1 100644
--- a/cells/or2/sky130_fd_sc_ls__or2_2.spice
+++ b/cells/or2/sky130_fd_sc_ls__or2_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__or2_2 A B VGND VNB VPB VPWR X
 M1000 VPWR A a_114_368# VPB phighvt w=1e+06u l=150000u
@@ -18,4 +33,3 @@
 M1007 a_114_368# B a_27_368# VPB phighvt w=1e+06u l=150000u
 +  ad=0p pd=0u as=2.85e+11p ps=2.57e+06u
 .ends
-
diff --git a/cells/or2/sky130_fd_sc_ls__or2_4.spice b/cells/or2/sky130_fd_sc_ls__or2_4.spice
index 1597637..f1dc02c 100644
--- a/cells/or2/sky130_fd_sc_ls__or2_4.spice
+++ b/cells/or2/sky130_fd_sc_ls__or2_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__or2_4 A B VGND VNB VPB VPWR X
 M1000 a_493_388# A VPWR VPB phighvt w=1e+06u l=150000u
@@ -30,4 +45,3 @@
 M1013 VGND a_83_260# X VNB nshort w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/or2b/sky130_fd_sc_ls__or2b_1.spice b/cells/or2b/sky130_fd_sc_ls__or2b_1.spice
index 3ac0b43..fc16ee1 100644
--- a/cells/or2b/sky130_fd_sc_ls__or2b_1.spice
+++ b/cells/or2b/sky130_fd_sc_ls__or2b_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__or2b_1 A B_N VGND VNB VPB VPWR X
 M1000 a_264_368# a_27_112# VGND VNB nshort w=550000u l=150000u
@@ -18,4 +33,3 @@
 M1007 X a_264_368# VGND VNB nshort w=740000u l=150000u
 +  ad=2.109e+11p pd=2.05e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/or2b/sky130_fd_sc_ls__or2b_2.spice b/cells/or2b/sky130_fd_sc_ls__or2b_2.spice
index 67ff8af..3164ab7 100644
--- a/cells/or2b/sky130_fd_sc_ls__or2b_2.spice
+++ b/cells/or2b/sky130_fd_sc_ls__or2b_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__or2b_2 A B_N VGND VNB VPB VPWR X
 M1000 VPWR a_187_48# X VPB phighvt w=1.12e+06u l=150000u
@@ -22,4 +37,3 @@
 M1009 a_470_368# A VPWR VPB phighvt w=1e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/or2b/sky130_fd_sc_ls__or2b_4.spice b/cells/or2b/sky130_fd_sc_ls__or2b_4.spice
index aa84e6c..10b5b95 100644
--- a/cells/or2b/sky130_fd_sc_ls__or2b_4.spice
+++ b/cells/or2b/sky130_fd_sc_ls__or2b_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__or2b_4 A B_N VGND VNB VPB VPWR X
 M1000 X a_81_296# VPWR VPB phighvt w=1.12e+06u l=150000u
@@ -38,4 +53,3 @@
 M1017 VGND a_676_48# a_81_296# VNB nshort w=640000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/or3/sky130_fd_sc_ls__or3_1.spice b/cells/or3/sky130_fd_sc_ls__or3_1.spice
index 93ebad9..f127632 100644
--- a/cells/or3/sky130_fd_sc_ls__or3_1.spice
+++ b/cells/or3/sky130_fd_sc_ls__or3_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__or3_1 A B C VGND VNB VPB VPWR X
 M1000 a_200_368# B a_116_368# VPB phighvt w=1e+06u l=150000u
@@ -18,4 +33,3 @@
 M1007 VPWR A a_200_368# VPB phighvt w=1e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/or3/sky130_fd_sc_ls__or3_2.spice b/cells/or3/sky130_fd_sc_ls__or3_2.spice
index 90f1fbe..a8e9222 100644
--- a/cells/or3/sky130_fd_sc_ls__or3_2.spice
+++ b/cells/or3/sky130_fd_sc_ls__or3_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__or3_2 A B C VGND VNB VPB VPWR X
 M1000 VPWR a_27_74# X VPB phighvt w=1.12e+06u l=150000u
@@ -22,4 +37,3 @@
 M1009 VGND a_27_74# X VNB nshort w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/or3/sky130_fd_sc_ls__or3_4.spice b/cells/or3/sky130_fd_sc_ls__or3_4.spice
index 32a625f..ddfe140 100644
--- a/cells/or3/sky130_fd_sc_ls__or3_4.spice
+++ b/cells/or3/sky130_fd_sc_ls__or3_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__or3_4 A B C VGND VNB VPB VPWR X
 M1000 a_116_388# B a_206_388# VPB phighvt w=1e+06u l=150000u
@@ -36,4 +51,3 @@
 M1016 a_206_388# C a_302_388# VPB phighvt w=1e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/or3b/sky130_fd_sc_ls__or3b_1.spice b/cells/or3b/sky130_fd_sc_ls__or3b_1.spice
index 8cbc336..fd12cc0 100644
--- a/cells/or3b/sky130_fd_sc_ls__or3b_1.spice
+++ b/cells/or3b/sky130_fd_sc_ls__or3b_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__or3b_1 A B C_N VGND VNB VPB VPWR X
 M1000 X a_239_74# VPWR VPB phighvt w=1.12e+06u l=150000u
@@ -22,4 +37,3 @@
 M1009 a_239_74# B VGND VNB nshort w=550000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/or3b/sky130_fd_sc_ls__or3b_2.spice b/cells/or3b/sky130_fd_sc_ls__or3b_2.spice
index a1278c8..fe1986e 100644
--- a/cells/or3b/sky130_fd_sc_ls__or3b_2.spice
+++ b/cells/or3b/sky130_fd_sc_ls__or3b_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__or3b_2 A B C_N VGND VNB VPB VPWR X
 M1000 VPWR a_190_260# X VPB phighvt w=1.12e+06u l=150000u
@@ -26,4 +41,3 @@
 M1011 a_190_260# a_27_368# VGND VNB nshort w=640000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/or3b/sky130_fd_sc_ls__or3b_4.spice b/cells/or3b/sky130_fd_sc_ls__or3b_4.spice
index e9a42f6..9dfd1cd 100644
--- a/cells/or3b/sky130_fd_sc_ls__or3b_4.spice
+++ b/cells/or3b/sky130_fd_sc_ls__or3b_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__or3b_4 A B C_N VGND VNB VPB VPWR X
 M1000 X a_409_392# VGND VNB nshort w=740000u l=150000u
@@ -40,4 +55,3 @@
 M1018 X a_409_392# VGND VNB nshort w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/or4/sky130_fd_sc_ls__or4_1.spice b/cells/or4/sky130_fd_sc_ls__or4_1.spice
index 58919a0..134adad 100644
--- a/cells/or4/sky130_fd_sc_ls__or4_1.spice
+++ b/cells/or4/sky130_fd_sc_ls__or4_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__or4_1 A B C D VGND VNB VPB VPWR X
 M1000 a_133_392# D a_44_392# VPB phighvt w=1e+06u l=150000u
@@ -22,4 +37,3 @@
 M1009 a_331_392# B a_217_392# VPB phighvt w=1e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/or4/sky130_fd_sc_ls__or4_2.spice b/cells/or4/sky130_fd_sc_ls__or4_2.spice
index 6fb870c..784c104 100644
--- a/cells/or4/sky130_fd_sc_ls__or4_2.spice
+++ b/cells/or4/sky130_fd_sc_ls__or4_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__or4_2 A B C D VGND VNB VPB VPWR X
 M1000 a_174_392# D a_85_392# VPB phighvt w=1e+06u l=150000u
@@ -26,4 +41,3 @@
 M1011 a_258_392# C a_174_392# VPB phighvt w=1e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/or4/sky130_fd_sc_ls__or4_4.spice b/cells/or4/sky130_fd_sc_ls__or4_4.spice
index f28bd3d..cb7a786 100644
--- a/cells/or4/sky130_fd_sc_ls__or4_4.spice
+++ b/cells/or4/sky130_fd_sc_ls__or4_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__or4_4 A B C D VGND VNB VPB VPWR X
 M1000 VGND a_83_264# X VNB nshort w=740000u l=150000u
@@ -42,4 +57,3 @@
 M1019 a_83_264# D a_962_392# VPB phighvt w=1e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/or4b/sky130_fd_sc_ls__or4b_1.spice b/cells/or4b/sky130_fd_sc_ls__or4b_1.spice
index 5e4e97e..1debc54 100644
--- a/cells/or4b/sky130_fd_sc_ls__or4b_1.spice
+++ b/cells/or4b/sky130_fd_sc_ls__or4b_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__or4b_1 A B C D_N VGND VNB VPB VPWR X
 M1000 VGND C a_228_74# VNB nshort w=550000u l=150000u
@@ -26,4 +41,3 @@
 M1011 VGND A a_228_74# VNB nshort w=550000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/or4b/sky130_fd_sc_ls__or4b_2.spice b/cells/or4b/sky130_fd_sc_ls__or4b_2.spice
index d0342cb..67e9faf 100644
--- a/cells/or4b/sky130_fd_sc_ls__or4b_2.spice
+++ b/cells/or4b/sky130_fd_sc_ls__or4b_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__or4b_2 A B C D_N VGND VNB VPB VPWR X
 M1000 VPWR a_190_48# X VPB phighvt w=1.12e+06u l=150000u
@@ -30,4 +45,3 @@
 M1013 VGND a_190_48# X VNB nshort w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/or4b/sky130_fd_sc_ls__or4b_4.spice b/cells/or4b/sky130_fd_sc_ls__or4b_4.spice
index 511f02d..b480c0d 100644
--- a/cells/or4b/sky130_fd_sc_ls__or4b_4.spice
+++ b/cells/or4b/sky130_fd_sc_ls__or4b_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__or4b_4 A B C D_N VGND VNB VPB VPWR X
 M1000 a_116_392# A VPWR VPB phighvt w=1e+06u l=150000u
@@ -46,4 +61,3 @@
 M1021 VGND a_27_74# X VNB nshort w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/or4bb/sky130_fd_sc_ls__or4bb_1.spice b/cells/or4bb/sky130_fd_sc_ls__or4bb_1.spice
index b4d284e..332ce92 100644
--- a/cells/or4bb/sky130_fd_sc_ls__or4bb_1.spice
+++ b/cells/or4bb/sky130_fd_sc_ls__or4bb_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__or4bb_1 A B C_N D_N VGND VNB VPB VPWR X
 M1000 a_446_378# a_216_424# a_357_378# VPB phighvt w=1e+06u l=150000u
@@ -30,4 +45,3 @@
 M1013 VGND a_27_424# a_357_378# VNB nshort w=550000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/or4bb/sky130_fd_sc_ls__or4bb_2.spice b/cells/or4bb/sky130_fd_sc_ls__or4bb_2.spice
index 436f409..0b3968b 100644
--- a/cells/or4bb/sky130_fd_sc_ls__or4bb_2.spice
+++ b/cells/or4bb/sky130_fd_sc_ls__or4bb_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__or4bb_2 A B C_N D_N VGND VNB VPB VPWR X
 M1000 a_182_270# B VGND VNB nshort w=640000u l=150000u
@@ -34,4 +49,3 @@
 M1015 VPWR A a_689_392# VPB phighvt w=1e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/or4bb/sky130_fd_sc_ls__or4bb_4.spice b/cells/or4bb/sky130_fd_sc_ls__or4bb_4.spice
index 4b64b4a..12b1687 100644
--- a/cells/or4bb/sky130_fd_sc_ls__or4bb_4.spice
+++ b/cells/or4bb/sky130_fd_sc_ls__or4bb_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__or4bb_4 A B C_N D_N VGND VNB VPB VPWR X
 M1000 a_791_392# a_27_94# a_193_277# VPB phighvt w=1e+06u l=150000u
@@ -50,4 +65,3 @@
 M1023 VGND a_193_277# X VNB nshort w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/sdfbbn/sky130_fd_sc_ls__sdfbbn_1.spice b/cells/sdfbbn/sky130_fd_sc_ls__sdfbbn_1.spice
index 1b20b63..c22ff07 100644
--- a/cells/sdfbbn/sky130_fd_sc_ls__sdfbbn_1.spice
+++ b/cells/sdfbbn/sky130_fd_sc_ls__sdfbbn_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__sdfbbn_1 CLK_N D RESET_B SCD SCE SET_B VGND VNB VPB VPWR
 + Q Q_N
@@ -99,4 +114,3 @@
 M1047 Q_N a_2133_410# VPWR VPB phighvt w=1.12e+06u l=150000u
 +  ad=3.304e+11p pd=2.83e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/sdfbbn/sky130_fd_sc_ls__sdfbbn_2.spice b/cells/sdfbbn/sky130_fd_sc_ls__sdfbbn_2.spice
index 7f30a3c..e992c15 100644
--- a/cells/sdfbbn/sky130_fd_sc_ls__sdfbbn_2.spice
+++ b/cells/sdfbbn/sky130_fd_sc_ls__sdfbbn_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__sdfbbn_2 CLK_N D RESET_B SCD SCE SET_B VGND VNB VPB VPWR
 + Q Q_N
@@ -107,4 +122,3 @@
 M1051 a_2216_410# a_1997_82# a_2556_392# VPB phighvt w=1e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/sdfbbp/sky130_fd_sc_ls__sdfbbp_1.spice b/cells/sdfbbp/sky130_fd_sc_ls__sdfbbp_1.spice
index fabac95..431e3df 100644
--- a/cells/sdfbbp/sky130_fd_sc_ls__sdfbbp_1.spice
+++ b/cells/sdfbbp/sky130_fd_sc_ls__sdfbbp_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__sdfbbp_1 CLK D RESET_B SCD SCE SET_B VGND VNB VPB VPWR Q
 + Q_N
@@ -99,4 +114,3 @@
 M1047 VGND a_2037_442# a_2061_74# VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/sdfrbp/sky130_fd_sc_ls__sdfrbp_1.spice b/cells/sdfrbp/sky130_fd_sc_ls__sdfrbp_1.spice
index ebe22ce..d7213d7 100644
--- a/cells/sdfrbp/sky130_fd_sc_ls__sdfrbp_1.spice
+++ b/cells/sdfrbp/sky130_fd_sc_ls__sdfrbp_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__sdfrbp_1 CLK D RESET_B SCD SCE VGND VNB VPB VPWR Q Q_N
 M1000 a_1320_119# a_1034_392# a_1234_119# VNB nshort w=420000u l=150000u
@@ -86,4 +101,3 @@
 M1041 VPWR a_1747_74# a_2008_48# VPB phighvt w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/sdfrbp/sky130_fd_sc_ls__sdfrbp_2.spice b/cells/sdfrbp/sky130_fd_sc_ls__sdfrbp_2.spice
index 275e625..fa702a7 100644
--- a/cells/sdfrbp/sky130_fd_sc_ls__sdfrbp_2.spice
+++ b/cells/sdfrbp/sky130_fd_sc_ls__sdfrbp_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__sdfrbp_2 CLK D RESET_B SCD SCE VGND VNB VPB VPWR Q Q_N
 M1000 VGND RESET_B a_223_79# VNB nshort w=420000u l=150000u
@@ -94,4 +109,3 @@
 M1045 a_2000_74# a_852_119# a_1790_75# VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/sdfrtn/sky130_fd_sc_ls__sdfrtn_1.spice b/cells/sdfrtn/sky130_fd_sc_ls__sdfrtn_1.spice
index 5708f82..32176eb 100644
--- a/cells/sdfrtn/sky130_fd_sc_ls__sdfrtn_1.spice
+++ b/cells/sdfrtn/sky130_fd_sc_ls__sdfrtn_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__sdfrtn_1 CLK_N D RESET_B SCD SCE VGND VNB VPB VPWR Q
 M1000 VPWR a_2087_410# a_2042_508# VPB phighvt w=420000u l=150000u
@@ -82,4 +97,3 @@
 M1039 a_284_464# RESET_B VPWR VPB phighvt w=640000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/sdfrtp/sky130_fd_sc_ls__sdfrtp_1.spice b/cells/sdfrtp/sky130_fd_sc_ls__sdfrtp_1.spice
index 3c8daca..6d2d278 100644
--- a/cells/sdfrtp/sky130_fd_sc_ls__sdfrtp_1.spice
+++ b/cells/sdfrtp/sky130_fd_sc_ls__sdfrtp_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__sdfrtp_1 CLK D RESET_B SCD SCE VGND VNB VPB VPWR Q
 M1000 a_1320_119# a_1034_392# a_1234_119# VNB nshort w=420000u l=150000u
@@ -82,4 +97,3 @@
 M1039 a_1234_119# a_1034_392# a_300_464# VPB phighvt w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/sdfrtp/sky130_fd_sc_ls__sdfrtp_2.spice b/cells/sdfrtp/sky130_fd_sc_ls__sdfrtp_2.spice
index 3a681b2..a5a8cc1 100644
--- a/cells/sdfrtp/sky130_fd_sc_ls__sdfrtp_2.spice
+++ b/cells/sdfrtp/sky130_fd_sc_ls__sdfrtp_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__sdfrtp_2 CLK D RESET_B SCD SCE VGND VNB VPB VPWR Q
 M1000 a_1320_119# a_1034_392# a_1234_119# VNB nshort w=420000u l=150000u
@@ -86,4 +101,3 @@
 M1041 Q a_2492_392# VGND VNB nshort w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/sdfrtp/sky130_fd_sc_ls__sdfrtp_4.spice b/cells/sdfrtp/sky130_fd_sc_ls__sdfrtp_4.spice
index da928c1..9b89f77 100644
--- a/cells/sdfrtp/sky130_fd_sc_ls__sdfrtp_4.spice
+++ b/cells/sdfrtp/sky130_fd_sc_ls__sdfrtp_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__sdfrtp_4 CLK D RESET_B SCD SCE VGND VNB VPB VPWR Q
 M1000 a_1236_138# a_1034_392# a_415_81# VPB phighvt w=420000u l=150000u
@@ -96,4 +111,3 @@
 M1046 VPWR a_1745_74# a_2339_74# VPB phighvt w=840000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/sdfsbp/sky130_fd_sc_ls__sdfsbp_1.spice b/cells/sdfsbp/sky130_fd_sc_ls__sdfsbp_1.spice
index dee3385..ec23e3b 100644
--- a/cells/sdfsbp/sky130_fd_sc_ls__sdfsbp_1.spice
+++ b/cells/sdfsbp/sky130_fd_sc_ls__sdfsbp_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__sdfsbp_1 CLK D SCD SCE SET_B VGND VNB VPB VPWR Q Q_N
 M1000 a_1876_74# a_594_74# a_1762_74# VNB nshort w=420000u l=150000u
@@ -86,4 +101,3 @@
 M1041 a_1411_74# a_995_74# a_1163_48# VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=1.197e+11p ps=1.41e+06u
 .ends
-
diff --git a/cells/sdfsbp/sky130_fd_sc_ls__sdfsbp_2.spice b/cells/sdfsbp/sky130_fd_sc_ls__sdfsbp_2.spice
index 1ef59a1..9af442a 100644
--- a/cells/sdfsbp/sky130_fd_sc_ls__sdfsbp_2.spice
+++ b/cells/sdfsbp/sky130_fd_sc_ls__sdfsbp_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__sdfsbp_2 CLK D SCD SCE SET_B VGND VNB VPB VPWR Q Q_N
 M1000 Q_N a_2067_74# VPWR VPB phighvt w=1.12e+06u l=150000u
@@ -102,4 +117,3 @@
 M1049 VGND a_3177_368# Q VNB nshort w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/sdfstp/sky130_fd_sc_ls__sdfstp_1.spice b/cells/sdfstp/sky130_fd_sc_ls__sdfstp_1.spice
index ab932a5..a43646b 100644
--- a/cells/sdfstp/sky130_fd_sc_ls__sdfstp_1.spice
+++ b/cells/sdfstp/sky130_fd_sc_ls__sdfstp_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__sdfstp_1 CLK D SCD SCE SET_B VGND VNB VPB VPWR Q
 M1000 VGND SCD a_402_74# VNB nshort w=420000u l=150000u
@@ -82,4 +97,3 @@
 M1039 a_1764_74# a_800_74# a_1686_74# VNB nshort w=640000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/sdfstp/sky130_fd_sc_ls__sdfstp_2.spice b/cells/sdfstp/sky130_fd_sc_ls__sdfstp_2.spice
index 44af87a..b30ae18 100644
--- a/cells/sdfstp/sky130_fd_sc_ls__sdfstp_2.spice
+++ b/cells/sdfstp/sky130_fd_sc_ls__sdfstp_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__sdfstp_2 CLK D SCD SCE SET_B VGND VNB VPB VPWR Q
 M1000 a_795_74# a_608_74# VGND VNB nshort w=740000u l=150000u
@@ -94,4 +109,3 @@
 M1045 VPWR CLK a_608_74# VPB phighvt w=1.12e+06u l=150000u
 +  ad=0p pd=0u as=3.192e+11p ps=2.81e+06u
 .ends
-
diff --git a/cells/sdfstp/sky130_fd_sc_ls__sdfstp_4.spice b/cells/sdfstp/sky130_fd_sc_ls__sdfstp_4.spice
index 5bae834..a932ea7 100644
--- a/cells/sdfstp/sky130_fd_sc_ls__sdfstp_4.spice
+++ b/cells/sdfstp/sky130_fd_sc_ls__sdfstp_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__sdfstp_4 CLK D SCD SCE SET_B VGND VNB VPB VPWR Q
 M1000 Q a_2580_74# VGND VNB nshort w=740000u l=150000u
@@ -104,4 +119,3 @@
 M1050 VPWR a_2580_74# Q VPB phighvt w=1.12e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/sdfxbp/sky130_fd_sc_ls__sdfxbp_1.spice b/cells/sdfxbp/sky130_fd_sc_ls__sdfxbp_1.spice
index 9e16f22..b9c049e 100644
--- a/cells/sdfxbp/sky130_fd_sc_ls__sdfxbp_1.spice
+++ b/cells/sdfxbp/sky130_fd_sc_ls__sdfxbp_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__sdfxbp_1 CLK D SCD SCE VGND VNB VPB VPWR Q Q_N
 M1000 VPWR SCE a_31_74# VPB phighvt w=640000u l=150000u
@@ -74,4 +89,3 @@
 M1035 a_1723_48# a_1529_74# VGND VNB nshort w=550000u l=150000u
 +  ad=1.5675e+11p pd=1.67e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/sdfxbp/sky130_fd_sc_ls__sdfxbp_2.spice b/cells/sdfxbp/sky130_fd_sc_ls__sdfxbp_2.spice
index 5d07e05..5e75f80 100644
--- a/cells/sdfxbp/sky130_fd_sc_ls__sdfxbp_2.spice
+++ b/cells/sdfxbp/sky130_fd_sc_ls__sdfxbp_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__sdfxbp_2 CLK D SCD SCE VGND VNB VPB VPWR Q Q_N
 M1000 a_630_74# CLK VGND VNB nshort w=740000u l=150000u
@@ -82,4 +97,3 @@
 M1039 VGND a_2322_368# Q_N VNB nshort w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/sdfxtp/sky130_fd_sc_ls__sdfxtp_1.spice b/cells/sdfxtp/sky130_fd_sc_ls__sdfxtp_1.spice
index b04982b..16648e2 100644
--- a/cells/sdfxtp/sky130_fd_sc_ls__sdfxtp_1.spice
+++ b/cells/sdfxtp/sky130_fd_sc_ls__sdfxtp_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__sdfxtp_1 CLK D SCD SCE VGND VNB VPB VPWR Q
 M1000 VPWR a_1239_74# a_1202_508# VPB phighvt w=420000u l=150000u
@@ -66,4 +81,3 @@
 M1031 a_1520_74# a_828_74# a_1239_74# VNB nshort w=550000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/sdfxtp/sky130_fd_sc_ls__sdfxtp_2.spice b/cells/sdfxtp/sky130_fd_sc_ls__sdfxtp_2.spice
index 198f7a3..4ef2766 100644
--- a/cells/sdfxtp/sky130_fd_sc_ls__sdfxtp_2.spice
+++ b/cells/sdfxtp/sky130_fd_sc_ls__sdfxtp_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__sdfxtp_2 CLK D SCD SCE VGND VNB VPB VPWR Q
 M1000 VGND SCD a_442_74# VNB nshort w=420000u l=150000u
@@ -70,4 +85,3 @@
 M1033 a_1044_100# a_634_74# a_300_453# VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/sdfxtp/sky130_fd_sc_ls__sdfxtp_4.spice b/cells/sdfxtp/sky130_fd_sc_ls__sdfxtp_4.spice
index 16f94d5..34b6615 100644
--- a/cells/sdfxtp/sky130_fd_sc_ls__sdfxtp_4.spice
+++ b/cells/sdfxtp/sky130_fd_sc_ls__sdfxtp_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__sdfxtp_4 CLK D SCD SCE VGND VNB VPB VPWR Q
 M1000 a_1026_100# a_828_74# a_301_74# VPB phighvt w=420000u l=150000u
@@ -80,4 +95,3 @@
 M1038 VPWR a_1587_74# a_1814_48# VPB phighvt w=840000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/sdlclkp/sky130_fd_sc_ls__sdlclkp_1.spice b/cells/sdlclkp/sky130_fd_sc_ls__sdlclkp_1.spice
index 28b08a7..1158284 100644
--- a/cells/sdlclkp/sky130_fd_sc_ls__sdlclkp_1.spice
+++ b/cells/sdlclkp/sky130_fd_sc_ls__sdlclkp_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__sdlclkp_1 CLK GATE SCE VGND VNB VPB VPWR GCLK
 M1000 a_318_74# a_288_48# VGND VNB nshort w=740000u l=150000u
@@ -46,4 +61,3 @@
 M1021 VPWR CLK a_288_48# VPB phighvt w=840000u l=150000u
 +  ad=0p pd=0u as=2.478e+11p ps=2.27e+06u
 .ends
-
diff --git a/cells/sdlclkp/sky130_fd_sc_ls__sdlclkp_2.spice b/cells/sdlclkp/sky130_fd_sc_ls__sdlclkp_2.spice
index 02bea1c..8c53bc3 100644
--- a/cells/sdlclkp/sky130_fd_sc_ls__sdlclkp_2.spice
+++ b/cells/sdlclkp/sky130_fd_sc_ls__sdlclkp_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__sdlclkp_2 CLK GATE SCE VGND VNB VPB VPWR GCLK
 M1000 a_114_112# GATE a_114_424# VPB phighvt w=840000u l=150000u
@@ -50,4 +65,3 @@
 M1023 VGND CLK a_288_48# VNB nshort w=740000u l=150000u
 +  ad=0p pd=0u as=2.109e+11p ps=2.05e+06u
 .ends
-
diff --git a/cells/sdlclkp/sky130_fd_sc_ls__sdlclkp_4.spice b/cells/sdlclkp/sky130_fd_sc_ls__sdlclkp_4.spice
index 400d26b..367f29c 100644
--- a/cells/sdlclkp/sky130_fd_sc_ls__sdlclkp_4.spice
+++ b/cells/sdlclkp/sky130_fd_sc_ls__sdlclkp_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__sdlclkp_4 CLK GATE SCE VGND VNB VPB VPWR GCLK
 M1000 a_792_48# a_634_74# VPWR VPB phighvt w=1.12e+06u l=150000u
@@ -58,4 +73,3 @@
 M1027 VGND a_1289_368# GCLK VNB nshort w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/sedfxbp/sky130_fd_sc_ls__sedfxbp_1.spice b/cells/sedfxbp/sky130_fd_sc_ls__sedfxbp_1.spice
index d18b01d..783e2a6 100644
--- a/cells/sedfxbp/sky130_fd_sc_ls__sedfxbp_1.spice
+++ b/cells/sedfxbp/sky130_fd_sc_ls__sedfxbp_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__sedfxbp_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_ls__sedfxbp_1 CLK D DE SCD SCE VGND VNB VPB VPWR Q Q_N
 M1000 Q_N a_575_305# VGND VNB nshort w=740000u l=150000u
@@ -90,4 +105,3 @@
 M1043 a_1895_118# a_1549_74# a_1747_118# VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/sedfxbp/sky130_fd_sc_ls__sedfxbp_2.spice b/cells/sedfxbp/sky130_fd_sc_ls__sedfxbp_2.spice
index ef17c84..32668a2 100644
--- a/cells/sedfxbp/sky130_fd_sc_ls__sedfxbp_2.spice
+++ b/cells/sedfxbp/sky130_fd_sc_ls__sedfxbp_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__sedfxbp_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_ls__sedfxbp_2 CLK D DE SCD SCE VGND VNB VPB VPWR Q Q_N
 M1000 a_691_113# a_661_87# a_1088_453# VPB phighvt w=640000u l=150000u
@@ -98,4 +113,3 @@
 M1047 a_141_74# D a_32_74# VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/sedfxtp/sky130_fd_sc_ls__sedfxtp_1.spice b/cells/sedfxtp/sky130_fd_sc_ls__sedfxtp_1.spice
index a6cd320..8a1b8c5 100644
--- a/cells/sedfxtp/sky130_fd_sc_ls__sedfxtp_1.spice
+++ b/cells/sedfxtp/sky130_fd_sc_ls__sedfxtp_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__sedfxtp_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_ls__sedfxtp_1 CLK D DE SCD SCE VGND VNB VPB VPWR Q
 M1000 VGND DE a_143_74# VNB nshort w=420000u l=150000u
@@ -86,4 +101,3 @@
 M1041 VPWR a_159_404# a_114_464# VPB phighvt w=640000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/sedfxtp/sky130_fd_sc_ls__sedfxtp_2.spice b/cells/sedfxtp/sky130_fd_sc_ls__sedfxtp_2.spice
index aa08f28..fb32d8b 100644
--- a/cells/sedfxtp/sky130_fd_sc_ls__sedfxtp_2.spice
+++ b/cells/sedfxtp/sky130_fd_sc_ls__sedfxtp_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__sedfxtp_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_ls__sedfxtp_2 CLK D DE SCD SCE VGND VNB VPB VPWR Q
 M1000 a_1736_97# a_1538_74# a_693_113# VPB phighvt w=420000u l=150000u
@@ -90,4 +105,3 @@
 M1043 a_2474_74# a_1340_74# a_2357_392# VPB phighvt w=1e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/sedfxtp/sky130_fd_sc_ls__sedfxtp_4.spice b/cells/sedfxtp/sky130_fd_sc_ls__sedfxtp_4.spice
index e3acff2..0be9685 100644
--- a/cells/sedfxtp/sky130_fd_sc_ls__sedfxtp_4.spice
+++ b/cells/sedfxtp/sky130_fd_sc_ls__sedfxtp_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__sedfxtp_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_ls__sedfxtp_4 CLK D DE SCD SCE VGND VNB VPB VPWR Q
 M1000 a_135_74# D a_37_464# VNB nshort w=420000u l=150000u
@@ -98,4 +113,3 @@
 M1047 a_2331_74# a_1943_53# VGND VNB nshort w=640000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/tap/sky130_fd_sc_ls__tap_1.spice b/cells/tap/sky130_fd_sc_ls__tap_1.spice
index bdf2786..b3509e4 100644
--- a/cells/tap/sky130_fd_sc_ls__tap_1.spice
+++ b/cells/tap/sky130_fd_sc_ls__tap_1.spice
@@ -1,5 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__tap_1 VGND VNB VPB VPWR
 .ends
-
diff --git a/cells/tap/sky130_fd_sc_ls__tap_2.spice b/cells/tap/sky130_fd_sc_ls__tap_2.spice
index b185c0c..beabeee 100644
--- a/cells/tap/sky130_fd_sc_ls__tap_2.spice
+++ b/cells/tap/sky130_fd_sc_ls__tap_2.spice
@@ -1,5 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__tap_2 VGND VNB VPB VPWR
 .ends
-
diff --git a/cells/tapmet1/sky130_fd_sc_ls__tapmet1_2.spice b/cells/tapmet1/sky130_fd_sc_ls__tapmet1_2.spice
index 2e7dd24..c6323c2 100644
--- a/cells/tapmet1/sky130_fd_sc_ls__tapmet1_2.spice
+++ b/cells/tapmet1/sky130_fd_sc_ls__tapmet1_2.spice
@@ -1,5 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__tapmet1_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_ls__tapmet1_2 VGND VPB VPWR
 .ends
-
diff --git a/cells/tapvgnd/sky130_fd_sc_ls__tapvgnd_1.spice b/cells/tapvgnd/sky130_fd_sc_ls__tapvgnd_1.spice
index aaeb2ae..ff56d22 100644
--- a/cells/tapvgnd/sky130_fd_sc_ls__tapvgnd_1.spice
+++ b/cells/tapvgnd/sky130_fd_sc_ls__tapvgnd_1.spice
@@ -1,5 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__tapvgnd_1 VGND VPB VPWR
 .ends
-
diff --git a/cells/tapvgnd2/sky130_fd_sc_ls__tapvgnd2_1.spice b/cells/tapvgnd2/sky130_fd_sc_ls__tapvgnd2_1.spice
index 8bd2db5..f43a1c0 100644
--- a/cells/tapvgnd2/sky130_fd_sc_ls__tapvgnd2_1.spice
+++ b/cells/tapvgnd2/sky130_fd_sc_ls__tapvgnd2_1.spice
@@ -1,5 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__tapvgnd2_1 VGND VPB VPWR
 .ends
-
diff --git a/cells/tapvgndnovpb/sky130_fd_sc_ls__tapvgndnovpb_1.spice b/cells/tapvgndnovpb/sky130_fd_sc_ls__tapvgndnovpb_1.spice
index 95303ac..ef82ece 100644
--- a/cells/tapvgndnovpb/sky130_fd_sc_ls__tapvgndnovpb_1.spice
+++ b/cells/tapvgndnovpb/sky130_fd_sc_ls__tapvgndnovpb_1.spice
@@ -1,5 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__tapvgndnovpb_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_ls__tapvgndnovpb_1 VGND VPWR
 .ends
-
diff --git a/cells/tapvpwrvgnd/sky130_fd_sc_ls__tapvpwrvgnd_1.spice b/cells/tapvpwrvgnd/sky130_fd_sc_ls__tapvpwrvgnd_1.spice
index b31ec4e..021150f 100644
--- a/cells/tapvpwrvgnd/sky130_fd_sc_ls__tapvpwrvgnd_1.spice
+++ b/cells/tapvpwrvgnd/sky130_fd_sc_ls__tapvpwrvgnd_1.spice
@@ -1,5 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__tapvpwrvgnd_1 VGND VPWR
 .ends
-
diff --git a/cells/xnor2/sky130_fd_sc_ls__xnor2_1.spice b/cells/xnor2/sky130_fd_sc_ls__xnor2_1.spice
index da9bb0a..7816408 100644
--- a/cells/xnor2/sky130_fd_sc_ls__xnor2_1.spice
+++ b/cells/xnor2/sky130_fd_sc_ls__xnor2_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__xnor2_1 A B VGND VNB VPB VPWR Y
 M1000 a_376_368# A VPWR VPB phighvt w=1.12e+06u l=150000u
@@ -22,4 +37,3 @@
 M1009 VGND A a_293_74# VNB nshort w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/xnor2/sky130_fd_sc_ls__xnor2_2.spice b/cells/xnor2/sky130_fd_sc_ls__xnor2_2.spice
index d23bf5a..6b8ed2c 100644
--- a/cells/xnor2/sky130_fd_sc_ls__xnor2_2.spice
+++ b/cells/xnor2/sky130_fd_sc_ls__xnor2_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__xnor2_2 A B VGND VNB VPB VPWR Y
 M1000 a_133_368# A VPWR VPB phighvt w=1e+06u l=150000u
@@ -34,4 +49,3 @@
 M1015 a_340_107# B VGND VNB nshort w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/xnor2/sky130_fd_sc_ls__xnor2_4.spice b/cells/xnor2/sky130_fd_sc_ls__xnor2_4.spice
index b2fa6a3..12e3a2f 100644
--- a/cells/xnor2/sky130_fd_sc_ls__xnor2_4.spice
+++ b/cells/xnor2/sky130_fd_sc_ls__xnor2_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__xnor2_4 A B VGND VNB VPB VPWR Y
 M1000 VPWR A a_950_368# VPB phighvt w=1.12e+06u l=150000u
@@ -62,4 +77,3 @@
 M1029 VGND B a_511_74# VNB nshort w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/xnor3/sky130_fd_sc_ls__xnor3_1.spice b/cells/xnor3/sky130_fd_sc_ls__xnor3_1.spice
index f9d9882..789378b 100644
--- a/cells/xnor3/sky130_fd_sc_ls__xnor3_1.spice
+++ b/cells/xnor3/sky130_fd_sc_ls__xnor3_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__xnor3_1 A B C VGND VNB VPB VPWR X
 M1000 VGND a_81_268# X VNB nshort w=740000u l=150000u
@@ -46,4 +61,3 @@
 M1021 a_786_100# B VGND VNB nshort w=740000u l=150000u
 +  ad=2.109e+11p pd=2.05e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/xnor3/sky130_fd_sc_ls__xnor3_2.spice b/cells/xnor3/sky130_fd_sc_ls__xnor3_2.spice
index 02cd17c..cf4e853 100644
--- a/cells/xnor3/sky130_fd_sc_ls__xnor3_2.spice
+++ b/cells/xnor3/sky130_fd_sc_ls__xnor3_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__xnor3_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_ls__xnor3_2 A B C VGND VNB VPB VPWR X
 M1000 a_83_247# a_397_21# a_332_373# VNB nshort w=640000u l=150000u
@@ -50,4 +65,3 @@
 M1023 a_1057_74# a_1027_48# a_329_81# VNB nshort w=640000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/xnor3/sky130_fd_sc_ls__xnor3_4.spice b/cells/xnor3/sky130_fd_sc_ls__xnor3_4.spice
index 763ed73..0769afc 100644
--- a/cells/xnor3/sky130_fd_sc_ls__xnor3_4.spice
+++ b/cells/xnor3/sky130_fd_sc_ls__xnor3_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__xnor3_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_ls__xnor3_4 A B C VGND VNB VPB VPWR X
 M1000 a_75_227# A VGND VNB nshort w=640000u l=150000u
@@ -58,4 +73,3 @@
 M1027 X a_1057_74# VGND VNB nshort w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/xor2/sky130_fd_sc_ls__xor2_1.spice b/cells/xor2/sky130_fd_sc_ls__xor2_1.spice
index 8e4e937..a7dd080 100644
--- a/cells/xor2/sky130_fd_sc_ls__xor2_1.spice
+++ b/cells/xor2/sky130_fd_sc_ls__xor2_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__xor2_1 A B VGND VNB VPB VPWR X
 M1000 VGND B a_194_125# VNB nshort w=550000u l=150000u
@@ -22,4 +37,3 @@
 M1009 VGND a_194_125# X VNB nshort w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/xor2/sky130_fd_sc_ls__xor2_2.spice b/cells/xor2/sky130_fd_sc_ls__xor2_2.spice
index fef8ff3..fb894d2 100644
--- a/cells/xor2/sky130_fd_sc_ls__xor2_2.spice
+++ b/cells/xor2/sky130_fd_sc_ls__xor2_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__xor2_2 A B VGND VNB VPB VPWR X
 M1000 VGND B a_183_74# VNB nshort w=640000u l=150000u
@@ -32,4 +47,3 @@
 M1014 X a_183_74# a_313_368# VPB phighvt w=1.12e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/xor2/sky130_fd_sc_ls__xor2_4.spice b/cells/xor2/sky130_fd_sc_ls__xor2_4.spice
index 36fd6e6..f7fd3f8 100644
--- a/cells/xor2/sky130_fd_sc_ls__xor2_4.spice
+++ b/cells/xor2/sky130_fd_sc_ls__xor2_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__xor2_4 A B VGND VNB VPB VPWR X
 M1000 a_160_98# A VGND VNB nshort w=740000u l=150000u
@@ -62,4 +77,3 @@
 M1029 X a_160_98# a_514_368# VPB phighvt w=1.12e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/xor3/sky130_fd_sc_ls__xor3_1.spice b/cells/xor3/sky130_fd_sc_ls__xor3_1.spice
index 2b6d7dc..7d87213 100644
--- a/cells/xor3/sky130_fd_sc_ls__xor3_1.spice
+++ b/cells/xor3/sky130_fd_sc_ls__xor3_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__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_ls__xor3_1 A B C VGND VNB VPB VPWR X
 M1000 a_27_134# a_452_288# a_416_86# VNB nshort w=420000u l=150000u
@@ -46,4 +61,3 @@
 M1021 a_84_108# A VGND VNB nshort w=640000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/xor3/sky130_fd_sc_ls__xor3_2.spice b/cells/xor3/sky130_fd_sc_ls__xor3_2.spice
index a81a142..460eaae 100644
--- a/cells/xor3/sky130_fd_sc_ls__xor3_2.spice
+++ b/cells/xor3/sky130_fd_sc_ls__xor3_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__xor3_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_ls__xor3_2 A B C VGND VNB VPB VPWR X
 M1000 VPWR a_83_289# a_27_134# VPB phighvt w=1e+06u l=150000u
@@ -50,4 +65,3 @@
 M1023 a_372_419# C a_1195_424# VPB phighvt w=840000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/xor3/sky130_fd_sc_ls__xor3_4.spice b/cells/xor3/sky130_fd_sc_ls__xor3_4.spice
index 03925a3..e3387d4 100644
--- a/cells/xor3/sky130_fd_sc_ls__xor3_4.spice
+++ b/cells/xor3/sky130_fd_sc_ls__xor3_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ls__xor3_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_ls__xor3_4 A B C VGND VNB VPB VPWR X
 M1000 a_27_118# a_397_320# a_323_392# VPB phighvt w=640000u l=150000u
@@ -58,4 +73,3 @@
 M1027 VGND C a_1155_284# VNB nshort w=420000u l=150000u
 +  ad=0p pd=0u as=2.121e+11p ps=1.85e+06u
 .ends
-