diff --git a/TestON/core/Thread.py b/TestON/core/Thread.py
index fcc06b5..4c040a6 100644
--- a/TestON/core/Thread.py
+++ b/TestON/core/Thread.py
@@ -1,6 +1,26 @@
 #!/usr/bin/env python
-import threading
 
+'''
+Copyright 2015 Open Networking Foundation (ONF)
+
+Please refer questions to either the onos test mailing list at <onos-test@onosproject.org>,
+the System Testing Plans and Results wiki page at <https://wiki.onosproject.org/x/voMg>,
+or the System Testing Guide page at <https://wiki.onosproject.org/x/WYQg>
+
+    TestON is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 2 of the License, or
+    (at your option) any later version.
+
+    TestON is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with TestON.  If not, see <http://www.gnu.org/licenses/>.
+'''
+import threading
 
 class Thread( threading.Thread ):
     def __init__( self, target=None, threadID=None, name="", args=(),
diff --git a/TestON/core/graph.py b/TestON/core/graph.py
index e8c8a7a..b1cbdb2 100644
--- a/TestON/core/graph.py
+++ b/TestON/core/graph.py
@@ -1,11 +1,26 @@
 #!/usr/bin/env python
-"""
-Created 2016 by ON.Lab
+
+'''
+Copyright 2016 Open Networking Foundation (ONF)
 
 Please refer questions to either the onos test mailing list at <onos-test@onosproject.org>,
 the System Testing Plans and Results wiki page at <https://wiki.onosproject.org/x/voMg>,
 or the System Testing Guide page at <https://wiki.onosproject.org/x/WYQg>
-"""
+
+    TestON is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 2 of the License, or
+    (at your option) any later version.
+
+    TestON is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with TestON.  If not, see <http://www.gnu.org/licenses/>.
+
+'''
 
 
 import time
diff --git a/TestON/core/teston.py b/TestON/core/teston.py
index bc65be4..74a4eac 100644
--- a/TestON/core/teston.py
+++ b/TestON/core/teston.py
@@ -1,7 +1,7 @@
 #!/usr/bin/env python
 '''
 Created on 22-Oct-2012
-Modified 2017 by ON.Lab
+Copyright 2012 Open Networking Foundation (ONF)
 
 Please refer questions to either the onos test mailing list at <onos-test@onosproject.org>,
 the System Testing Plans and Results wiki page at <https://wiki.onosproject.org/x/voMg>,
diff --git a/TestON/core/utilities.py b/TestON/core/utilities.py
index 3978a7d..be15bc1 100644
--- a/TestON/core/utilities.py
+++ b/TestON/core/utilities.py
@@ -1,7 +1,7 @@
 #!/usr/bin/env python
 '''
 Created on 23-Oct-2012
-Modified 2015 by ON.Lab
+Copyright 2012 Open Networking Foundation (ONF)
 
 Please refer questions to either the onos test mailing list at <onos-test@onosproject.org>,
 the System Testing Plans and Results wiki page at <https://wiki.onosproject.org/x/voMg>,
diff --git a/TestON/core/xmldict.py b/TestON/core/xmldict.py
index 0746f3a..808b365 100644
--- a/TestON/core/xmldict.py
+++ b/TestON/core/xmldict.py
@@ -1,6 +1,6 @@
 '''
 Created on 03-Dec-2012
-Modified 2015 by ON.Lab
+Copyright 2012 Open Networking Foundation (ONF)
 
 Please refer questions to either the onos test mailing list at <onos-test@onosproject.org>,
 the System Testing Plans and Results wiki page at <https://wiki.onosproject.org/x/voMg>,
diff --git a/TestON/core/xmlparser.py b/TestON/core/xmlparser.py
index e639d57..a41ed92 100644
--- a/TestON/core/xmlparser.py
+++ b/TestON/core/xmlparser.py
@@ -1,7 +1,7 @@
 #/usr/bin/env python
 '''
 Created on 07-Jan-2013
-Modified 2015 by ON.Lab
+Copyright 2013 Open Networking Foundation (ONF)
 
 Please refer questions to either the onos test mailing list at <onos-test@onosproject.org>,
 the System Testing Plans and Results wiki page at <https://wiki.onosproject.org/x/voMg>,