diff --git a/clean_run.sh b/clean_run.sh
index f7c00bc..f174d13 100755
--- a/clean_run.sh
+++ b/clean_run.sh
@@ -1,3 +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
+
 #!/bin/bash
 rm -rf def/*
 rm -rf gds/*
diff --git a/make_complete.sh b/make_complete.sh
index 3ec8536..dc3f006 100755
--- a/make_complete.sh
+++ b/make_complete.sh
@@ -1,3 +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
+
 #!/bin/bash
 ./run_test.sh
 make clean 
diff --git a/make_synthesis.sh b/make_synthesis.sh
index 0948d49..7946263 100755
--- a/make_synthesis.sh
+++ b/make_synthesis.sh
@@ -1,3 +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
+
 #!/bin/bash
 ./clean_run.sh
 make user_proj_example && make user_project_wrapper
\ No newline at end of file
diff --git a/run_test.sh b/run_test.sh
index 211f5bf..e5da9a4 100755
--- a/run_test.sh
+++ b/run_test.sh
@@ -1,3 +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
+
 #!/bin/bash
 rm -rf ./test.log
 make clean
diff --git a/verilog/rtl/ecc_registers/data_verificator.v b/verilog/rtl/ecc_registers/data_verificator.v
index 6695374..d47fce4 100755
--- a/verilog/rtl/ecc_registers/data_verificator.v
+++ b/verilog/rtl/ecc_registers/data_verificator.v
@@ -1,3 +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
+
 `default_nettype none
 //-----------------------------------------------------
 // Project Name : a.out
diff --git a/verilog/rtl/ecc_registers/decoder_output.v b/verilog/rtl/ecc_registers/decoder_output.v
index 6431cfb..2312319 100755
--- a/verilog/rtl/ecc_registers/decoder_output.v
+++ b/verilog/rtl/ecc_registers/decoder_output.v
@@ -1,3 +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
+
+
 `default_nettype none
 //-----------------------------------------------------
 // Project Name : a.out
diff --git a/verilog/rtl/ecc_registers/majority_gate.v b/verilog/rtl/ecc_registers/majority_gate.v
index 596418a..d6b2310 100644
--- a/verilog/rtl/ecc_registers/majority_gate.v
+++ b/verilog/rtl/ecc_registers/majority_gate.v
@@ -1,3 +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
+
 `default_nettype none
 //-----------------------------------------------------
 // Project Name : a.out
diff --git a/verilog/rtl/ecc_registers/parity_calculator.v b/verilog/rtl/ecc_registers/parity_calculator.v
index 403aa57..fb8eda7 100755
--- a/verilog/rtl/ecc_registers/parity_calculator.v
+++ b/verilog/rtl/ecc_registers/parity_calculator.v
@@ -1,3 +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
+
 `default_nettype none
 //-----------------------------------------------------
 // Project Name : a.out
diff --git a/verilog/rtl/ecc_registers/register_data.v b/verilog/rtl/ecc_registers/register_data.v
index 91bfcff..61f7d8a 100755
--- a/verilog/rtl/ecc_registers/register_data.v
+++ b/verilog/rtl/ecc_registers/register_data.v
@@ -1,3 +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
+
 `default_nettype none
 //-----------------------------------------------------
 // Project Name : Register File
diff --git a/verilog/rtl/ecc_registers/register_file.v b/verilog/rtl/ecc_registers/register_file.v
index e0e01a3..bad76c1 100755
--- a/verilog/rtl/ecc_registers/register_file.v
+++ b/verilog/rtl/ecc_registers/register_file.v
@@ -1,3 +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
+
 `default_nettype none
 //-----------------------------------------------------
 // Project Name : a.out
diff --git a/verilog/rtl/ecc_registers/state_counters.v b/verilog/rtl/ecc_registers/state_counters.v
index ba1a1e8..adf9369 100755
--- a/verilog/rtl/ecc_registers/state_counters.v
+++ b/verilog/rtl/ecc_registers/state_counters.v
@@ -1,3 +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
+
 `default_nettype none
 //-----------------------------------------------------
 // Project Name : a.out