[oneweekwonder]

No.

The implication is if you use react now you give away rights.

The same is not true for angular, vue or mithril. Some argue if you use vdom there might be issue. But at least with those you/your dev is not giving away rights willingly...

But come to think of it; That is the way fb started :/

[chrisco255]

No, what rights are you giving away? You always have the right to sue anyone for any reason. There have always been consequences for doing so. If you want to sue Facebook for patent infringement...they own thousands of patents, mind you...they are going to comb through their portfolio and find which ones you're infringing on in your product. That's what any company would do. Google. Apple. Microsoft. Samsung. Yahoo. Any of them.