Yup, every single patent was post Palworld release and even worse, most of the shit Nintendo got a patent on are game mechanics that have existed for decades
This situation creates an interesting conundrum
1) If Palworld decides to settle outside of court "for an undisclosed amount", then they potentially save on legal fees and presumably there would be some manner of future immunity clause in said settlement. However, this never challenges the patents themselves, which means Nintendo can toss this shit around later with other games
2) If Palworld challenges, it is possible they may win, but the legal fees may greatly exceed what they could have settled for. Unless they had a corporate sponsor (like Sony), this might not be a viable option for the company.