And you can stop using React, then sue. Even if they also stop using your patent, they were in violation when they used it. They can't retroactively put you i

And you can stop using React, then sue. Even if they also stop using your patent, they were in violation when they used it. They can't retroactively put you in violation with their revocation. Moreover, nothing is preventing you from informing them of your patent and asking that they stop using it. If they continue to, it's clearly willful infringement.