I think there is a legal layer, and an ideological layer. From the legal layer, this is a non-issue. You are not in any way worse off than if the license was public domain or BSD (as far as I understand it).
From an ideological or appearances point of view, it seems a bit clumsy. People see it as a submarine to get access to their patents, rather than an insurance to prevent unnecessary patent litigation costs.
I wonder what other companies do with their patent grants, e.g. Microsoft. I remember MS had one that said, you may use our patent for the Ribbon UI, as long as you follow our UI guidelines and don't make an Office competitor (which I find pretty restrictive). But maybe there are other options out there that people would find more agreeable.
I think a unilateral patent grant for React in the license would be nice, but unrealistic. Maybe they should restrict the kinds of patent actions that trigger the invalidation of the grant, say only to certain patents, but it is hard to find a good compromise.
Actually, from a legal layer it also might be a tactic to weaken the bargining power of anyone who uses React (why would Facebook want to discuss a patent portfolio with a company that cannot sue them for any form of patent infringement without losing their React protection). They also would lose their effective ability to counter-sue in a patent case.
I don't like software patents on an ideological level, but even from a legal and practical perspective these license terms should be reason for concern. The first thing I read when I look at a free software project is the license, and when I first saw React a few years ago I stopped looking once I read the PATENTS file.
From an ideological or appearances point of view, it seems a bit clumsy. People see it as a submarine to get access to their patents, rather than an insurance to prevent unnecessary patent litigation costs.
I wonder what other companies do with their patent grants, e.g. Microsoft. I remember MS had one that said, you may use our patent for the Ribbon UI, as long as you follow our UI guidelines and don't make an Office competitor (which I find pretty restrictive). But maybe there are other options out there that people would find more agreeable.
I think a unilateral patent grant for React in the license would be nice, but unrealistic. Maybe they should restrict the kinds of patent actions that trigger the invalidation of the grant, say only to certain patents, but it is hard to find a good compromise.