If those are the only 3 items they’re suing over, in an American court of law it’d be a slam dunk for PocketPair. Theres so much prior art, open use, and poor definitions involved the patents would be quickly invalidated.
But I’m not aware of the nuance of Japanese court, only that they tend to protect IP even more strongly than US courts.
Edit: fuck it, I haven’t been very interested so far, but I’m buying a copy of palworld today. Software patents are a broken system and Nintendo deserves every bit of fight given to them.
And that’s why you don’t let them contact the Internet.
Managing IoT risk is an easy no brainer if people bother to try.