For anybody who's wondering, Nintendo doesn't _actually_ own Pokemon (a common misconception), but has a major stake in "The Pokemon Company", which does https://en.wikipedia.org/wiki/Nintendo#Subsidiaries
As such, I wonder if this structure makes it harder to sue over IP infringement. I agree with others here that patent infringement is a seemingly odd pick, but perhaps this also has to do with character design patents, since Palworld didn't explicitly use Nintendo's IP?
Should be interesting regardless to see what happens