Can you explain the additional patent exposure you face by using React? If I use a clean room clone of React, how does that protect me from Facebook suing me d

Can you explain the additional patent exposure you face by using React? If I use a clean room clone of React, how does that protect me from Facebook suing me down the line? In fact, by not using React, you are more vulnerable to a hypothetical suit by them given you won't have been granted by them rights to their patents. Their license gives you everything the BSD license gives you, full stop. Then it additionally gives you temporary access to all of facebook's patents related to it. The only thing you give up to get the additional patent license is the right to sue them for patent infringement. If that isn't valuable, then just use the software under the BSD license.