diff --git a/README.md b/README.md
index 5a4ed66..117edd5 100644
--- a/README.md
+++ b/README.md
@@ -1,3 +1,20 @@
+<!---
+# SPDX-FileCopyrightText: 2020 Efabless Corporation
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+# SPDX-License-Identifier: Apache-2.0
+-->
 # CIIC Harness  
 
 A template SoC for Google SKY130 free shuttles. It is still WIP. The current SoC architecture is given below.
diff --git a/doc/README.md b/doc/README.md
index 8b13789..1fa58df 100644
--- a/doc/README.md
+++ b/doc/README.md
@@ -1 +1,18 @@
+<!---
+# SPDX-FileCopyrightText: 2020 Efabless Corporation
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+# SPDX-License-Identifier: Apache-2.0
+-->
 
diff --git a/macros/README.md b/macros/README.md
index e69de29..a56c4a2 100644
--- a/macros/README.md
+++ b/macros/README.md
@@ -0,0 +1,17 @@
+<!---
+# SPDX-FileCopyrightText: 2020 Efabless Corporation
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+# SPDX-License-Identifier: Apache-2.0
+-->
diff --git a/mpw-one-a.md b/mpw-one-a.md
index 78606c9..474b6c1 100644
--- a/mpw-one-a.md
+++ b/mpw-one-a.md
@@ -1,3 +1,21 @@
+<!---
+# SPDX-FileCopyrightText: 2020 Efabless Corporation
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+# SPDX-License-Identifier: Apache-2.0
+-->
+
 # Repositories and versions to use
 
 ## skywater-pdk:
diff --git a/openlane/DFFRAM/README.md b/openlane/DFFRAM/README.md
index 639fc5a..7033578 100644
--- a/openlane/DFFRAM/README.md
+++ b/openlane/DFFRAM/README.md
@@ -1,3 +1,20 @@
+<!---
+# SPDX-FileCopyrightText: 2020 Efabless Corporation
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+# SPDX-License-Identifier: Apache-2.0
+-->
 # DFFRAM
 
 This DFFRAM is adobted from https://github.com/shalan/DFFRAM
diff --git a/openlane/README.md b/openlane/README.md
index 82381e9..850784a 100644
--- a/openlane/README.md
+++ b/openlane/README.md
@@ -1,3 +1,20 @@
+<!---
+# SPDX-FileCopyrightText: 2020 Efabless Corporation
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+# SPDX-License-Identifier: Apache-2.0
+-->
 # Using OpenLANE to Harden Your Design:
 
 You can utilize the Makefile existing here in this directory to do that.
diff --git a/qflow/README b/qflow/README
index f58340e..0871548 100644
--- a/qflow/README
+++ b/qflow/README
@@ -1,3 +1,21 @@
+<!---
+# SPDX-FileCopyrightText: 2020 Efabless Corporation
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+# SPDX-License-Identifier: Apache-2.0
+-->
+
 The qflow directory entries are only used to verify the all-digital frequency
 locked loop circuit by running the verilog modules ring_osc2x13 and
 digital_pll_controller seperately through synthesis.
diff --git a/utils/core_scripts/README.md b/utils/core_scripts/README.md
index daa5515..b14c1db 100644
--- a/utils/core_scripts/README.md
+++ b/utils/core_scripts/README.md
@@ -1,3 +1,20 @@
+<!---
+# SPDX-FileCopyrightText: 2020 Efabless Corporation
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+# SPDX-License-Identifier: Apache-2.0
+-->
 # What is this?
 
 Core scripts are doing the actual work, scripts under ../scripts are the ones that should be used.
\ No newline at end of file
diff --git a/utils/examples/README.md b/utils/examples/README.md
index c81d547..10f7a37 100644
--- a/utils/examples/README.md
+++ b/utils/examples/README.md
@@ -1,2 +1,19 @@
+<!---
+# SPDX-FileCopyrightText: 2020 Efabless Corporation
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+# SPDX-License-Identifier: Apache-2.0
+-->
 This folder contains miscelleneous useful scripts
 THIS IS STILL WORK IN PROGRESSS - SUGGESTIONS ARE WELCOME THROUGH ISSUES
diff --git a/verilog/dv/README.md b/verilog/dv/README.md
index 1c316a7..49cd280 100644
--- a/verilog/dv/README.md
+++ b/verilog/dv/README.md
@@ -1,3 +1,20 @@
+<!---
+# SPDX-FileCopyrightText: 2020 Efabless Corporation
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+# SPDX-License-Identifier: Apache-2.0
+-->
 # DV Tests
 
 Organized into two subdirectories:
diff --git a/verilog/dv/caravel/mgmt_soc/gpio/README b/verilog/dv/caravel/mgmt_soc/gpio/README
index f1935dd..baadc1f 100644
--- a/verilog/dv/caravel/mgmt_soc/gpio/README
+++ b/verilog/dv/caravel/mgmt_soc/gpio/README
@@ -1,3 +1,20 @@
+<!---
+# SPDX-FileCopyrightText: 2020 Efabless Corporation
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+# SPDX-License-Identifier: Apache-2.0
+-->
 ------------------------------------------------
 Caravel
 gpio testbench
diff --git a/verilog/dv/caravel/user_proj_example/README.md b/verilog/dv/caravel/user_proj_example/README.md
index 244df05..503b8f4 100644
--- a/verilog/dv/caravel/user_proj_example/README.md
+++ b/verilog/dv/caravel/user_proj_example/README.md
@@ -1,3 +1,20 @@
+<!---
+# SPDX-FileCopyrightText: 2020 Efabless Corporation
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+# SPDX-License-Identifier: Apache-2.0
+-->
 # Mega-Project Counter Tests
 
 The directory includes three tests for the counter mega-project example: 
diff --git a/verilog/rtl/README b/verilog/rtl/README
index bc1d751..f36a305 100644
--- a/verilog/rtl/README
+++ b/verilog/rtl/README
@@ -1,3 +1,21 @@
+<!---
+# SPDX-FileCopyrightText: 2020 Efabless Corporation
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+# SPDX-License-Identifier: Apache-2.0
+-->
+
 A quick documentation of the Caravel memory map and operation
 ---------------------------------------------------------------