When Pokémon Meets the Courts: Nintendo, Patents, and the Palworld Showdown
If you’ve ever felt that catching virtual monsters was simple fun, think again. Nintendo’s latest legal saga proves that in gaming, every Pokéball can carry a world of lawsuits. The U.S. Patent and Trademark Office (USPTO) is now reexamining one of Nintendo’s most controversial patents: the “‘397 patent,” covering the act of summoning characters to fight—a mechanic so central to Pokémon it’s practically the DNA of the series.
But here’s the kicker: it’s not just Pokémon that does this. From Persona to Digimon to even Elden Ring, games have been summoning companions to battle for decades. And yet, Nintendo was granted a patent that could, in theory, let them claim ownership over this core mechanic. Cue public outrage, raised eyebrows from IP experts, and a storm of online commentary.
Donald Trump-appointed USPTO director John A. Squires, fresh in his role since September, decided enough was enough. He ordered a reexamination, flagging “substantial new questions of patentability.” The claims he scrutinized read like a recipe for any monster-battling RPG: move your player character, summon a sub-character, fight enemies either manually or automatically. Simple, right? That’s what makes it so controversial. Two older patents—from Konami (2002) and Nintendo itself (2019)—now stand as roadblocks that may invalidate the 2021-era claims.
IP lawyer Florian Mueller has been candid: Nintendo is facing a credibility crisis. And with two months to respond, the company has its work cut out.
Enter Palworld
Meanwhile, across the Pacific, Pocketpair’s Palworld continues to stir the pot. Nintendo has been quick to assert its patents in court, but the timing of its filings raises eyebrows. Divisional patents filed in 2024 seem to directly respond to Palworld’s mechanics. Pocketpair has been nimble, adjusting their game: Pokéball-style Pal summoning is gone, gliding mechanics have shifted, and mods are carefully monitored to avoid legal exposure.
John “Bucky” Buckley of Pocketpair described Nintendo’s actions as a shock—a reminder that even studios with strong fan bases can be blindsided by IP claims. The saga has turned Palworld into more than a game; it’s a case study in how innovation collides with entrenched IP rights.
The Global Stage
The tension isn’t limited to the U.S. In Japan, Nintendo recently suffered a loss when the Japan Patent Office rejected a monster-capture patent, citing prior art from games released well before 2021, including ARK, Monster Hunter 4, and Kantai Collection. Even Niantic’s Pokémon Go and Pocketpair’s Craftopia were referenced. It’s a sobering reminder that the mechanics we consider “classic” may, legally speaking, be far from original.
And then there’s the court of public opinion. Former Capcom developer Yoshiki Okamoto criticized Palworld on YouTube, claiming it had “crossed a line.” Fans quickly pushed back, questioning whether this is a fair critique—or a defense of monopolized mechanics. In a way, the debate mirrors the games themselves: strategy, risk, and reputation all collide in a high-stakes arena.
Why This Matters
For Nintendo, losing the ‘397 patent—or even seeing it weakened—could ripple across its legal strategy, casting doubt on other monster-capture and summoning patents. For Pocketpair, it’s a David vs. Goliath story unfolding in real-time, with the studio continuing development under scrutiny, proving that creativity often thrives under pressure.
And for gamers? It’s a reminder that the systems behind our favorite games aren’t just coded—they’re contested. Every “catch ‘em all” moment could someday be a headline about patents, lawsuits, and the boundaries of intellectual property.
In short: this is more than a legal dispute—it’s a cultural conversation. How much can you own in the world of games? When does inspiration become infringement? And what does the future hold for studios daring enough to reimagine beloved mechanics?
As the case moves toward decisions in 2026, all eyes are on Tokyo District Court’s Presiding Judge Motoyuki Nakashima. If nothing else, the Nintendo vs. Palworld saga reminds us that behind every adorable digital creature, there’s a complex battle—sometimes legal, sometimes moral, always fascinating.