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USPTO Chief Orders Re-Examination of Nintendo’s Summoning Patent

The rare director-initiated review points to older Konami and Nintendo filings as prior art, raising questions that could sway the Tokyo lawsuit against Palworld’s developer.

Overview

  • USPTO Director John A. Squires ordered an ex parte re-examination of U.S. Patent No. 12,403,397 covering a sub-character summoning and battle mechanic.
  • The order cites Konami’s 2002 Yabe patent and Nintendo’s 2020 Taura patent as prior art teaching manual and automatic battle modes, creating substantial new questions of patentability.
  • Independent claims 1, 13, 25, and 26 are specifically flagged in the directive, which does not revoke the patent but initiates a fresh review.
  • Director-initiated re-examinations are unusual, with reporting noting the last comparable action occurred in 2012; Nintendo has two months to respond and third parties may file challenges.
  • A week earlier, the Japan Patent Office rejected related application 2024-031879 for lack of inventive step citing older games, while Nintendo’s Tokyo District Court case against Pocketpair proceeds.