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Palworld dev says a Dark Souls 3 mod invalidates Nintendo’s Pokeball patent, Nintendo says mods don’t count as real games, and an expert worries prior art precedents could see a modder’s work “used against them”

By Dustin Bailey

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Palworld dev says a Dark Souls 3 mod invalidates Nintendo's Pokeball patent, Nintendo says mods don't count as real games, and an expert worries prior art precedents could see a modder's work used against them

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Palworld dev says a Dark Souls 3 mod invalidates Nintendo’s Pokeball patent, Nintendo says mods don’t count as real games, and an expert worries prior art precedents could see a modder’s work “used against them”

Dustin Bailey

17 September 2025

“Modders would become ‘fair game’ as their ideas could be patented by someone else”

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(Image credit: Pocket Pair)

Nintendo’s lawsuit against Palworld developer Pocketpair is still ongoing and unlikely to be resolved anytime soon, but a new look at the case files suggests a pretty striking stance from the Nintendo legal team: in essence, they’re arguing that mods don’t count as real games.

In 2021, shortly before the release of Pokemon Legends: Arceus, Nintendo filed a patent on Pokemon-style creature collecting mechanics. In 2024, after Palworld launched to wild success, the company registered a series of divisional patents under the previous patent’s umbrella, describing more particular parts of the Pokeball mechanic.
The divisional patents are at the heart of Nintendo’s lawsuit against Pocketpair. The Palworld developer pushed back with a number of examples of similar mechanics in games ranging from Final Fantasy 14 to Monster Hunter from well before Nintendo’s patents were issued. These examples, Pocketpair hoped, would constitute prior art and diminish Nintendo’s patent claims.

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One such example that Pocketpair highlighted was a Dark Souls 3 mod called Pocket Souls, and that’s the crux of a new bit of legal analysis from Florian Mueller at games fray. Nintendo says that mods can’t count as prior art because they can’t stand on their own. Mueller suggests that’s an “extreme” position for the company to take, and “courts usually reject attempts to narrow the pool for prior art references in unreasonable ways.”

It’ll ultimately be up to the court to decide whether Nintendo’s argument is valid, but if the company gets its way, that could set a dangerous precedent for the modding community.
“We are concerned about what an adoption of Nintendo’s views by the Tokyo District Court and potentially other courts in the world would mean for the modder community,” Mueller writes. “Apart from utter disregard for the enormous creativity with which modders contribute to game-related innovation, modders would become ‘fair game’ as their ideas could be patented by someone else (unless they file for patents first, which modders typically don’t) and then, depending on the specific prior use rules in a jurisdiction, be used against them.”
Of course, Nintendo’s lawyers probably wouldn’t look at any collateral damage against mods as a particularly worrying outcome. The company’s already taken direct action against Nintendo-themed add-ons for Garry’s Mod, the Zelda: Breath of the Wild multiplayer mod, and more, which has had Palworld modders feeling especially sketchy about Pokemon-themed mods. We’ll have to wait and see what the courts have to say about this particular argument, though.

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There are plenty more games like Pokemon out there, and Nintendo hasn’t sued most of them… yet.

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Staff Writer

Dustin Bailey joined the GamesRadar team as a Staff Writer in May 2022, and is currently based in Missouri. He’s been covering games (with occasional dalliances in the worlds of anime and pro wrestling) since 2015, first as a freelancer, then as a news writer at PCGamesN for nearly five years. His love for games was sparked somewhere between Metal Gear Solid 2 and Knights of the Old Republic, and these days you can usually find him splitting his entertainment time between retro gaming, the latest big action-adventure title, or a long haul in American Truck Simulator.

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As the Palworld lawsuit rumbles on, Nintendo claims two new patents that could change the way non-Pokemon creature collectors work for good

As Palworld update soars, IP expert says “weird” new moves from Nintendo in ongoing lawsuit read like a “desperate attempt to win by doing something odd”

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Even Pokemon’s former chief legal officer thinks Nintendo’s controversial new patent is unenforceable: “I wish Nintendo and Pokemon good luck”

With the Palworld lawsuit rumbling on in the background, the Nintendo Switch welcomes “Palland” – a survival game that looks a whole lot like Pocketpair’s creature collector

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