In reply to Al.

Don't celebrate prematurely.

Facebook's decision to adopt the MIT license – which doesn't include a patent grant – rather than the Apache license – which includes a weaker patent provision than the original BSD + Patents license – solves one patent issue while raising another.

The problem is that by choosing this approach, Facebook does not convey with the MIT license any patent grants as they would have under the Apache.

If Facebook has patents that read on React, in other words, users of that software are not given an explicit license to them via MIT, only an untested implicit license.

So now how "glad" are you now?