Japan's patent office has rejected a key Pokémon-related patent, creating new hurdles for Nintendo's Palworld lawsuit.
The Japan Patent Office (JPO) denied Nintendo's application no. 2024-031879 in late October 2025, citing lack of originality.
The rejection of the patent application may create new complications for Nintendo's ongoing lawsuit against Palworld developer Pocketpair.
Author's summary: Nintendo's lawsuit against Palworld faces new challenges.