From: http://www.webmproject.org/about/faq/#licensing http://www.webmproject.org/about/faq/#licensing Q: What if someone makes a change to the code and gives i

From: http://www.webmproject.org/about/faq/#licensing http://www.webmproject.org/about/faq/#licensing Q: What if someone makes a change to the code and gives it to me. Do I have a patent license from Google for that change? A: You still have the right to redistribute but no patent license for the changes (if there are any patents covering it). We can't give patent licenses for changes people make after we distribute the code, as we have no way to predict what those changes will be. Other common licenses take the same approach, including the Apache license. I'm not sure if it supports your statement, it would be great if someone more knowledgable about this can clarify.