Nintendo's Patent Strategy Faces Setbacks: From Palworld to Pickmon and the Battle Over Game Mechanics

The Pickmon Paradox: Brazen Theft in Nintendo's Shadow

While Nintendo's lawyers scrutinize lines of code and game mechanics elsewhere, Pickmon represents a different kind of threat—one of unabashed asset theft. Developed by a team using the names "PocketGame" and "PokeGame," and published by NETWORKGO, the game has been accused by independent fan artists of directly copying their Pokémon fan designs. One notable allegation points to a "1-to-1" copy of a fan-created Mega Meganium design.

What makes Pickmon particularly galling is its marketing strategy, which treats legal controversy as a viral engine. The developers publicly thanked media outlets for helping achieve "25 million impressions in under 48 hours" from negative coverage, framing outrage as free advertising. This behavior fits a pattern for NETWORKGO, whose only other known title, Hainya World, has faced accusations of ripping designs from Nexon's MapleStory.

The central question becomes glaring: Why is this obvious, design-copying clone operating with apparent impunity while Nintendo focuses its considerable legal resources on a game like Palworld, which, while inspired, built its own models and world? The answer may lie not in the severity of the offense, but in the complexity of the legal battlefield. While Pickmon represents a clear-cut case of visual asset theft, Nintendo's primary legal weapon against games like Palworld is not copyright on designs, but patents on game mechanics—a separate and increasingly contested front in its IP defense.

A Patent House of Cards: Examining the U.S. and Japanese Rejections

Nintendo's offensive against mechanically similar games is built on a foundation of patents, but that foundation is showing significant cracks. In April 2026, a U.S. patent examiner issued a non-final rejection of all claims in Nintendo's patent #12,403,397. This patent, granted in July 2025, broadly covers mechanics for summoning characters into battles from a storage system—a core loop in many monster-collecting games.

The rejection was decisive and based on prior art. The examiner cited earlier patents from Konami, Bandai Namco, and, ironically, Nintendo itself, demonstrating that the mechanics were not novel inventions but evolved concepts in the gaming landscape. This echoed earlier doubts raised by the Japan Patent Office in October 2025, which pointed to games like Monster Hunter 4 and ARK: Survival Evolved as prior examples of similar systems, predating their use in Pokémon Scarlet and Violet.

Intellectual property experts have consistently criticized such patents for attempting to claim ownership over common, non-patentable game design concepts. The U.S. rejection is non-final, and Nintendo has a two-month window to appeal the decision. The company can and is expected to appeal, meaning the legal battle over this patent is far from over. However, these consecutive setbacks from major patent offices suggest a strategic vulnerability: the very tools Nintendo is using to attack others may be under threat of invalidation.

The Palworld Precedent: How the Lawsuit Reshaped a Hit Game

The most visible front in this war is Nintendo and The Pokémon Company's lawsuit in Japan against Pocketpair, developer of the viral hit Palworld. The suit centers on patents related to capturing/releasing monsters and riding creatures. The impact was immediate and tangible.

In direct response to the legal action, Pocketpair released a patch in November 2024 that removed the ability to summon creatures by throwing a sphere—a mechanic visually and functionally reminiscent of Pokémon's Poké Ball. A Pocketpair executive called the patent lawsuit "a shock" and "something no one had even considered," highlighting how this legal avenue caught the industry off guard.

This reaction underscores the high stakes. Palworld was a commercial juggernaut, breaking sales records upon its early 2024 launch and leading to a major partnership with Sony to form Palworld Entertainment. Nintendo's move was a clear signal: even transformative, massively successful games operating in a similar genre would face consequences if they tread too close to patented mechanics.

Strategic Misdirection? Analyzing Nintendo's Legal Focus

The contrast in targets is stark. On one side is Palworld: a mechanically inspired, commercially threatening behemoth that built its own assets. On the other is Pickmon: a blatant, asset-stealing clone that appears to be a cynical cash grab. Nintendo's aggressive pursuit of the former and apparent inaction toward the latter invites analysis.

Several factors may explain this focus. Analysts suggest that a successful patent lawsuit against a major player like Pocketpair sets a powerful precedent that could deter other large studios, whereas chasing international clone developers operating under shifting names like NETWORKGO is a legal quagmire with limited payoff. Second, with major franchise releases like Pokémon Legends: Z-A on the horizon, protecting the core mechanical "feel" of the ecosystem may be deemed more critical than policing every visual rip-off.

However, this strategy carries immense risk. By pushing broad patents, Nintendo is inviting scrutiny that could lead to their invalidation, as the U.S. and Japanese offices have indicated. If the foundational patents fall, the entire legal strategy against games like Palworld collapses. The company may be fighting a battle against a successful innovator while the castle walls are being dismantled by patent examiners.

The Pickmon saga exposes a potential critical flaw in a once-impregnable strategy. Nintendo's broad patent claims, intended to be a defensive moat, are being systematically challenged by patent offices citing prior art from across the industry. Meanwhile, more egregious copycats, operating on the fringes of digital storefronts, mock the system with impunity. This dichotomy suggests that the era of using sweeping patent portfolios to claim ownership over common game mechanics may be ending. To protect its iconic brand in the modern landscape, Nintendo may need to recalibrate—focusing legal resources on clear, actionable cases of asset theft and counterfeit goods, while accepting that certain game mechanics have become part of a shared creative language. As patent offices define the limits of what can be owned, the industry—and players—are left to wonder: will the future of game design be shaped by litigation over mechanics, or by competition over creativity?

Tags: Nintendo, Patent Law, Palworld, Intellectual Property, Game Development