I know this isn't super helpful, but I remember from a college course that there was something like a lawsuit version of a restraining order that could either stop lawsuits against you or massively simplify them that you could get if this was the same person suing you over and over. It took a fuckton more work than a regular restraining order, but the gist of it was that it was a legal recognition that, since this person is just doing this to target you, they now no longer get the standard lawsuit treatment and will be insta-yeeted unless they're clearly suing for something you very obviously wronged them with like assault in broad daylight or something.