Nintendo's pokémon patent blocked: palworld victory?
The United States Patent and Trademark Office (USPTO) has thrown out Nintendo's controversial patent for a "summon character and let it fight" mechanic, a significant blow in the ongoing legal battle with the Pokémon-inspired game Palworld. The rejection, stemming from years of scrutiny by intellectual property lawyers, could reshape the future of gaming IP.

Uspto rejects nintendo's 'summon character' patent
The decision follows intense criticism from IP experts who argued the patent was overly broad and claimed mechanics already present in numerous games. The USPTO initially ordered a re-examination of the patent in November 2023, prompted by concerns raised by legal professionals regarding the U.S. patent system and the awarding of the patent to Nintendo. IP attorney Florian Mueller publicly stated Nintendo “should never” have received the patent, while video game patent lawyer Kirk Sigmon declared the claims “in no way allowable.”
This patent directly relates to the core gameplay loop of Pokémon games: summoning creatures to battle and collect them. However, critics pointed out that similar mechanics are prevalent in titles like Persona, Digimon, and even Elden Ring, suggesting the patent lacked novelty.
The USPTO's rejection hinges on "prior art," referencing existing U.S. patent applications filed by Nintendo (two applications) as well as Konami and Bandai Namco. These later-filed patents appear to have been strategically deployed by Nintendo specifically to counter Palworld's mechanics, filed in 2024 after Palworld's release. Nintendo had even amended a mount-related patent mid-litigation, arguing against mods being considered prior art.
The legal conflict began after Palworld's explosive launch in early 2024, which shattered sales and player count records. Nintendo and The Pokémon Company initially pursued a patent infringement lawsuit against Palworld, seeking 5 million yen ($32,846) each in damages and an injunction to halt the game's release. Palworld has since implemented changes to its summoning mechanics, including removing the Pokéball-like Pal Spheres in a November 2024 patch and altering gliding mechanics in May 2024, citing the lawsuit as the impetus for these changes.
The case is currently before Presiding Judge Motoyuki Nakashima at the Tokyo District Court. Palworld developer Pocketpair, despite facing accusations of using generative AI and copying Pokémon designs, has continued to update the game as it prepares for its 1.0 launch. John “Bucky” Buckley, communications director for Pocketpair, described Nintendo’s lawsuit as a “shock” and something “no one even considered,” during a recent talk at the Game Developers Conference (GDC).
The USPTO’s decision is non-final, leaving the door open for Nintendo to appeal. However, the ruling significantly impacts the ongoing legal battle with Palworld. The game's resilience – and its future – now rest not on battling virtual creatures, but on navigating a complex and costly legal landscape.
The rejection underscores a broader challenge for IP holders in a rapidly evolving gaming landscape, where mechanics once considered novel can quickly become commonplace. The consequences of this decision could reverberate far beyond this particular dispute, potentially shaping the future of creative innovation in the industry.
The game’s success, however, has not come without scrutiny. Pocketpair’s rapid growth has spurred a partnership with Sony to form Palworld Entertainment and expand the Palworld IP.
With the USPTO’s decision, the legal battle between Nintendo and Palworld shifts to a new phase. Nintendo faces a difficult choice: pursue a protracted and expensive appeal, or accept the rejection and potentially concede ground in the fight to protect its intellectual property.
The stakes are high. The outcome of this legal saga will not only determine the fate of Palworld but also set a precedent for how intellectual property is protected – and contested – in the age of rapidly evolving game mechanics.