diff --git a/OA/BAG_prim/.oalib b/OA/BAG_prim/.oalib
index 21ffef8..577960e 100644
--- a/OA/BAG_prim/.oalib
+++ b/OA/BAG_prim/.oalib
@@ -1,4 +1,21 @@
 <?xml version="1.0"?>
+<!--
+Copyright 2019-2021 SkyWater PDK Authors
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+    https://www.apache.org/licenses/LICENSE-2.0
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+This code is *alternatively* available under a BSD-3-Clause license, see
+details in the README.md at the top level and the license text at
+https://github.com/google/skywater-pdk-libs-sky130_bag3_pr/blob/master/LICENSE.alternative
+SPDX-License-Identifier: BSD-3-Clause OR Apache 2.0
+-->
 
 <Library DMSystem="oaDMFileSys">
     <oaDMFileSys libReadOnly="No"
diff --git a/OA/BAG_prim/cdsinfo.tag b/OA/BAG_prim/cdsinfo.tag
index b75aa95..4838ed0 100644
--- a/OA/BAG_prim/cdsinfo.tag
+++ b/OA/BAG_prim/cdsinfo.tag
@@ -1,11 +1,26 @@
+# Copyright 2019-2021 SkyWater PDK Authors
 #
+# Licensed under the Apache License, Version 2.0 (the "License");
 # This is a cdsinfo.tag file.
-#
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#     https://www.apache.org/licenses/LICENSE-2.0
 # See the "Cadence Application Infrastructure Reference Manual" for
 # details on the format of this file, its semantics, and its use.
 #
+# Unless required by applicable law or agreed to in writing, software
 # The `#' character denotes a comment. Removing the leading `#'
+# distributed under the License is distributed on an "AS IS" BASIS,
 # character from any of the entries below will activate them.
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+# This code is *alternatively* available under a BSD-3-Clause license, see
+# details in the README.md at the top level and the license text at
+# https://github.com/google/skywater-pdk-libs-sky130_bag3_pr/blob/master/LICENSE.alternative
+#
+# SPDX-License-Identifier: BSD-3-Clause OR Apache 2.0
 #
 # CDSLIBRARY entry - add this entry if the directory containing
 # this cdsinfo.tag file is the root of a Cadence library.
diff --git a/calibre_setup/drc.runset b/calibre_setup/drc.runset
index 7908bef..05f6f1b 100644
--- a/calibre_setup/drc.runset
+++ b/calibre_setup/drc.runset
@@ -1,3 +1,22 @@
+// Copyright 2019-2021 SkyWater PDK Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// This code is *alternatively* available under a BSD-3-Clause license, see
+// details in the README.md at the top level and the license text at
+// https://github.com/google/skywater-pdk-libs-sky130_bag3_pr/blob/master/LICENSE.alternative
+//
+// SPDX-License-Identifier: BSD-3-Clause OR Apache 2.0
 *drcRulesFile: ${PDK_HOME}/DRC/Calibre/s8_drcRules
 *drcRunDir: ${BAG_WORK_DIR}/calibre_run/drc/myLib/myCell
 *drcLayoutPaths: myCell.calibre.db
diff --git a/calibre_setup/drc.svrf b/calibre_setup/drc.svrf
index f65cdad..ec12374 100644
--- a/calibre_setup/drc.svrf
+++ b/calibre_setup/drc.svrf
@@ -1,3 +1,23 @@
+// Copyright 2019-2021 SkyWater PDK Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// This code is *alternatively* available under a BSD-3-Clause license, see
+// details in the README.md at the top level and the license text at
+// https://github.com/google/skywater-pdk-libs-sky130_bag3_pr/blob/master/LICENSE.alternative
+//
+// SPDX-License-Identifier: BSD-3-Clause OR Apache 2.0
+
 LAYOUT PATH  "{{ layout_file }}"
 LAYOUT PRIMARY "{{ cell_name }}"
 LAYOUT SYSTEM {{layout_type}}
diff --git a/calibre_setup/lvs.runset b/calibre_setup/lvs.runset
index c1a94bf..aa56bfd 100644
--- a/calibre_setup/lvs.runset
+++ b/calibre_setup/lvs.runset
@@ -1,3 +1,22 @@
+// Copyright 2019-2021 SkyWater PDK Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// This code is *alternatively* available under a BSD-3-Clause license, see
+// details in the README.md at the top level and the license text at
+// https://github.com/google/skywater-pdk-libs-sky130_bag3_pr/blob/master/LICENSE.alternative
+//
+// SPDX-License-Identifier: BSD-3-Clause OR Apache 2.0
 *lvsRulesFile: ${PDK_HOME}/LVS/Calibre/lvs_s8_opts
 *lvsRunDir: ${BAG_WORK_DIR}/calibre_run/lvs/myLib/top_cell
 *lvsLayoutPaths: top_cell.calibre.db
diff --git a/calibre_setup/lvs.svrf b/calibre_setup/lvs.svrf
index 4b22c1b..2284e53 100644
--- a/calibre_setup/lvs.svrf
+++ b/calibre_setup/lvs.svrf
@@ -1,3 +1,23 @@
+// Copyright 2019-2021 SkyWater PDK Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// This code is *alternatively* available under a BSD-3-Clause license, see
+// details in the README.md at the top level and the license text at
+// https://github.com/google/skywater-pdk-libs-sky130_bag3_pr/blob/master/LICENSE.alternative
+//
+// SPDX-License-Identifier: BSD-3-Clause OR Apache 2.0
+
 LAYOUT PATH  "{{ layout_file }}"
 LAYOUT PRIMARY "{{ cell_name }}"
 LAYOUT SYSTEM {{layout_type}}
diff --git a/netlist_setup/bag_prim.scs b/netlist_setup/bag_prim.scs
index d757b78..578077c 100644
--- a/netlist_setup/bag_prim.scs
+++ b/netlist_setup/bag_prim.scs
@@ -1,3 +1,22 @@
+// Copyright 2019-2021 SkyWater PDK Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// This code is *alternatively* available under a BSD-3-Clause license, see
+// details in the README.md at the top level and the license text at
+// https://github.com/google/skywater-pdk-libs-sky130_bag3_pr/blob/master/LICENSE.alternative
+//
+// SPDX-License-Identifier: BSD-3-Clause OR Apache 2.0
 
 subckt nmos4_hv B D G S
 parameters l w nf
diff --git a/netlist_setup/spectre_prim.scs b/netlist_setup/spectre_prim.scs
index f8bde6b..6f47b51 100644
--- a/netlist_setup/spectre_prim.scs
+++ b/netlist_setup/spectre_prim.scs
@@ -1,3 +1,23 @@
+// Copyright 2019-2021 SkyWater PDK Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// This code is *alternatively* available under a BSD-3-Clause license, see
+// details in the README.md at the top level and the license text at
+// https://github.com/google/skywater-pdk-libs-sky130_bag3_pr/blob/master/LICENSE.alternative
+//
+// SPDX-License-Identifier: BSD-3-Clause OR Apache 2.0
+
 simulator lang=spectre
 
 subckt ideal_balun d c p n
diff --git a/pcell_setup/prim_pcell_jinja2.il b/pcell_setup/prim_pcell_jinja2.il
index 9ac3a4b..cadfca5 100644
--- a/pcell_setup/prim_pcell_jinja2.il
+++ b/pcell_setup/prim_pcell_jinja2.il
@@ -1,3 +1,23 @@
+;; Copyright 2019-2021 SkyWater PDK Authors
+;;
+;; Licensed under the Apache License, Version 2.0 (the "License");
+;; you may not use this file except in compliance with the License.
+;; You may obtain a copy of the License at
+;;
+;;     https://www.apache.org/licenses/LICENSE-2.0
+;;
+;; Unless required by applicable law or agreed to in writing, software
+;; distributed under the License is distributed on an "AS IS" BASIS,
+;; WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+;; See the License for the specific language governing permissions and
+;; limitations under the License.
+;;
+;; This code is *alternatively* available under a BSD-3-Clause license, see
+;; details in the README.md at the top level and the license text at
+;; https://github.com/google/skywater-pdk-libs-sky130_bag3_pr/blob/master/LICENSE.alternative
+;;
+;; SPDX-License-Identifier: BSD-3-Clause OR Apache 2.0
+
 ;; This skill file compiles schematic PCells for BAG primitives
 
 lib_obj = ddGetObj("BAG_prim")
diff --git a/workspace_setup/leBindKeys.il b/workspace_setup/leBindKeys.il
index 701d345..3b4419c 100644
--- a/workspace_setup/leBindKeys.il
+++ b/workspace_setup/leBindKeys.il
@@ -1,3 +1,23 @@
+;; Copyright 2019-2021 SkyWater PDK Authors
+;;
+;; Licensed under the Apache License, Version 2.0 (the "License");
+;; you may not use this file except in compliance with the License.
+;; You may obtain a copy of the License at
+;;
+;;     https://www.apache.org/licenses/LICENSE-2.0
+;;
+;; Unless required by applicable law or agreed to in writing, software
+;; distributed under the License is distributed on an "AS IS" BASIS,
+;; WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+;; See the License for the specific language governing permissions and
+;; limitations under the License.
+;;
+;; This code is *alternatively* available under a BSD-3-Clause license, see
+;; details in the README.md at the top level and the license text at
+;; https://github.com/google/skywater-pdk-libs-sky130_bag3_pr/blob/master/LICENSE.alternative
+;;
+;; SPDX-License-Identifier: BSD-3-Clause OR Apache 2.0
+
 ;;-----------------------------------------------------------------------------
 ;; Bindkeys for 'Layout'
 ;; Inherited by: