toyou v. MGT — Court upheld the limited fee award and rejected the remaining damages claims
Case Kabushiki Kaisha toyou v. Kabushiki Kaisha MGT, START QUEST Co., Ltd., Y1, Y2, and Y3 Court Intellectual Property High
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Intellectual Property
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A.I.C. v. Eskey Koki — Trademark infringement appeal dismissed as an abuse of rights
Case A.I.C. Co., Ltd. v. Eskey Koki Co., Ltd. Court Intellectual Property High Court (Japan) Date Decided September 9, 2026
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X v. NTT Corporation — Court rejected infringement claim because utility model rights do not arise retroactively
Case X v. NTT Corporation, Appeal Seeking Damages Court Intellectual Property High Court (Japan) Date Decided September 9, 2026 Citation
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ConMed Corp. v. Commissioner of the Japan Patent Office — Court upheld rejection of surgical suction-system patent application for lack of novelty
Case ConMed Corporation v. Commissioner of the Japan Patent Office (Request to Rescind a JPO Decision) Court Intellectual Property High
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Kitagawa Industries v. JPO Commissioner — Court upheld cancellation of magnetic-shielding patent claims as indefinite
Case Kitagawa Industries Co., Ltd. v. Commissioner of the Japan Patent Office Court Intellectual Property High Court (Japan) Date Decided
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BGI Japan v. Foshan Shunde Herong Food — Court rejects patent and defective-goods setoffs and affirms full payment
Case BGI Japan Co., Ltd. v. Foshan Shunde Herong Food Co., Ltd. Court Intellectual Property High Court (Japan) Date Decided
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X v. Y — Court barred further reproduction and distribution after the author terminated the publication agreements
Case X v. Y, Appeal Concerning Injunction Against Publication for Copyright Infringement and Damages Court Intellectual Property High Court (Japan)
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X1 & X2 v. zSustainergy — Affirmed that the inventors had transferred their rights to obtain quantum-dot patents
Case X1 and X2 v. zSustainergy Co., Ltd. (Action for Confirmation of the Right to Obtain Patents) Court Intellectual Property
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Secure Lamil v. A — IP High Court upheld lawful quotation and rejected copyright takedown claims
Case Secure Lamil Co., Ltd. v. A, Copyright Infringement Injunction and Related Claims Appeal Court Intellectual Property High Court, Second
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X v. Alphacool International GmbH — Court upheld invalidation of the Alphacool trademark for violating public order and morality
Case X v. Alphacool International GmbH, Action to Revoke JPO Invalidation Decision Court Intellectual Property High Court (Japan) Date Decided
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D&X Co., Ltd. v. Y — Affirmed dismissal because customer information was not managed as a trade secret
Case D&X Co., Ltd. v. Y Court Intellectual Property High Court (Japan) Judge Per Curiam Date Decided July 27, 2026
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Forcevalley v. Beyond Technologies — Japan High Court Affirms Dismissal of Trade Secret and Poaching Claims
Case Forcevalley Concierge K.K. v. Beyond Technologies K.K., et al. Court Intellectual Property High Court (Japan) Date Decided July 22,
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Alibaba v. BWB Inc. — Intellectual Property High Court upholds patent for pre-customs clearance e-commerce system
Case Alibaba Inc. v. BWB Inc. (Patent Validity Challenge) Court Intellectual Property High Court of Japan, Fourth Division Date Decided
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BＷB v. Alibaba — Court dismisses patent infringement appeal; program does not infringe patent lacking required technical elements
Case BＷB Co., Ltd. v. Alibaba Co., Ltd. (Patent Infringement Injunction Appeal) Court Intellectual Property High Court of Japan, 4th
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Japanese Patent Appeal — Procedural Violation Reverses Patent Office Rejection of CO2 Reduction Method
Case Japanese Patent Application 2020-546445 Court Intellectual Property High Court of Japan (4th Division) Judge Per Curiam Date Decided July
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GROOVE X v. JPO — Patent Rejection Upheld for Lack of Inventive Step in Robot Eye Control
Case GROOVE X株式会社 v. 特許庁長官 (GROOVE X K.K. v. Commissioner, Japan Patent Office) Court Intellectual Property High Court, Division 4
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Taberun Trademark Non-Use Cancellation — Intellectual Property High Court upheld trademark registration, finding sufficient use during the proof period
Case Eatwell Co., Ltd. v. Toto Living Cooperative Union (Trademark Non-Use Cancellation) Court Intellectual Property High Court of Japan, Second
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Patent No. 4332353 — Intellectual Property High Court Upholds Patent for Prostaglandin Compound Used to Treat Drug-Induced Constipation
Case Appeal of Patent Office Decision (Patent Invalidation Challenge) No. 2024-00077 Court Intellectual Property High Court of Japan, First Division