By &quot;derived product&quot; do you mean an obligation to open-source? If yes, there isn&#x27;t any: Android is licensed Apache 2.0. <a href="https:&#x2F;&#x2F;source.android.com&#x2F;source&#x2F;licenses.html" rel="nofollow">https:&#x2F;&#x2F;source.android.com&#x2F;source&#x2F;licenses.html</a>