I'd recommend reading this article about the licensing language that's being disputed now: https://medium.com/@dwalsh.sdlr/react-facebook-and-the-revokable-pate

I'd recommend reading this article about the licensing language that's being disputed now: https://medium.com/@dwalsh.sdlr/react-facebook-and-the-revokable-patent-license-why-its-a-paper-25c40c50b562 https://medium.com/@dwalsh.sdlr/react-facebook-and-the-revok... The author is the same person that has an article on the front page currently arguing that the license for Graph QL DOES have issues (and is following through with Facebook through Github Issues to resolve them), so I think this position is really worth considering.