diff --git a/metadata.html b/metadata.html
index c2e399c..66e569e 100644
--- a/metadata.html
+++ b/metadata.html
@@ -1,3 +1,12 @@
+<!--
+    @license
+    Copyright (c) 2014 The Polymer Project Authors. All rights reserved.
+    This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt
+    The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt
+    The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt
+    Code distributed by Google as part of the polymer project is also
+    subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt
+-->
 <x-meta id="paper-icon-button" label="Icon Button" group="Paper">
 
   <template>
diff --git a/pulse-ink.css b/pulse-ink.css
index 8d11bc1..4a7985b 100644
--- a/pulse-ink.css
+++ b/pulse-ink.css
@@ -1,3 +1,13 @@
+/*
+ * @license
+ * Copyright (c) 2014 The Polymer Project Authors. All rights reserved.
+ * This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt
+ * The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt
+ * The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt
+ * Code distributed by Google as part of the polymer project is also
+ * subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt
+ */
+
 @-webkit-keyframes pulse-ink {
   0% {
     -webkit-transform: scale(0);