“The analysis states that only three (patents) - one from the first group and two from the second - were registered before Palworld’s release. That suggests that Nintendo could have played Palworld, identified any similarities, and then focused in on specific areas in order to increase the strength of its claim.”
“The volume of patents that the company owns means that it has the right to pick and choose which ones it wants to enforce at a given time, and having essentially given up on attempting to enforce any copyright claims, it’s made the decision to go after Pocketpair because “it felt threatened” by Palworld’s expansion.”
Gamesradar-
This would never stand up in the US (or Canada or Europe…) as prior art would completely invalidate the patent. But the Japanese patent system is it’s own opaque legal monster.
There’s not enough case details released yet. Maybe they’ll have something more substantial to show.