Nintendo Amends Patent Mid-Case in Palworld Lawsuit

The high-profile patent infringement lawsuit between Nintendo/The Pokémon Company and Pocketpair over Palworld continues unfolding in Japanese courts. The latest twist sees Nintendo modifying one of its contested patents mid-case – but what prompted this unusual legal maneuver?

Palworld's Meteoric Rise

Since its January 2024 Early Access launch, Palworld shattered records with 8 million copies sold in six days and over 25 million players within a month. The game's "Pokémon with guns" premise – featuring monster-catching mechanics strikingly similar to Nintendo's franchise – immediately drew attention.

The controversy escalated when Sony partnered with Pocketpair in June 2024 to establish Palworld Entertainment, signaling serious commercial ambition for the budding IP.

The Legal Battle Emerges

After months of monitoring Palworld's success, Nintendo and The Pokémon Company officially filed suit in September 2024, alleging infringement of three specially filed patents:

• Two covering monster capture/release mechanics
• One concerning character riding systems

These 2024 patents were strategically derived from earlier Nintendo filings, suggesting purposeful legal positioning against Palworld's mechanics.

Pocketpair's Strategic Adjustments

Rather than conceding, Pocketpair implemented calculated gameplay changes:

• November 2024: Removed Pokéball-like summoning animations
• May 2025: Revised gliding mechanics from direct Pal interaction to equipment-based system

Japanese patent attorney Kiyoshi Kurihara explains this aligns with standard litigation defense: denying infringement, challenging patent validity, and implementing design workarounds.

The Pivotal Patent Rewrite

The recent legal focus centers on Nintendo's "ride mechanic" patent concerning "boardable characters." Pocketpair's May update effectively circumvented the original patent language by converting Glider Pals from active participants to passive buff-givers.

Legal analyst Ryo Arashida highlights the irony: Nintendo's patent specifically excludes tool-based mechanics (like parachutes), yet their case attempts to classify Palworld's gliders as "characters."

Nintendo's recent patent rewording – particularly adding subjective "even when" phrasing – suggests, according to IP consultant Florian Mueller, concerns about the original claims' vulnerability.

What This Means Moving Forward

While Nintendo's patent modification may aim to bolster its legal position, the case remains hotly contested. Meanwhile, Pocketpair continues developing Palworld, recently launching a Terraria crossover event, demonstrating its commitment to the game's future despite legal challenges.

The outcome could set significant precedents for gameplay mechanic patents in the industry.