Quote Originally Posted by ovIm View Post
that is what I have heard as well (this being one of the patents in question), then yes, they were created after Palworlds release, which should become invalid given the facts. IANAL though.
Unfortunately, from my understanding of patents is that a patent owner can sue for infringement if someone uses their patented invention without permission, even if that patent was created after the product was finished. I.E. Nintendo making the patent after Palworld was released is still, for some reason, legal and applicable. I think it's only not applicable if the patent is still pending.

A defense case for it to be invalid is for patent language to not be precise enough (I.E., if it's too broad in its wording) or if the patented technology existed before the patentee's filing (which when it comes to software is a can of worms).