Patent Case Law and Intellectual Property Practice Blog

Japanese version: https://www.takaishihideki.com/single-post/linkedin-7513417920920629250-ja Article information Article type: Case note Categories: Copyright Issues: Quotation Published on website: 2026-10-08 Display and classification checked: 2026-10-08 [Copyright / Quotation] Tokyo District Court, Reiwa 5 (Wa) 70388 <Judge Nakashima> An SNS post describing a “most sinister tag team.” ⇒ Permissible quotation was established. 1. Purpose of use The defendant used an article

Japanese version: https://www.takaishihideki.com/single-post/linkedin-7513418920406556672-ja Article information Article type: Case note Categories: Patents Issues: Patent eligibility, Enablement Published on website: 2026-10-08 Display and classification checked: 2026-10-08 IP High Court, Reiwa 6 (Gyo-Ke) 10014 [Acceleration recovery generator] <Judge Miyasaka> [Claim 1] A motor drives a weight at the end of an arm through: (1) acceleration → (2) high-speed forward rotation

Japanese version: https://www.takaishihideki.com/single-post/linkedin-7513418313813618688-ja Article information Article type: Case note Categories: Patents Issues: Inventive step Published on website: 2026-10-08 Display and classification checked: 2026-10-08 IP High Court, Reiwa 5 (Gyo-Ke) 10100 [Gas-scrubber fluid purification apparatus] <Judge Shimizu> The invention's technical significance lies in dividing functions between the scrubber body and the separation system thro

Japanese version: https://www.takaishihideki.com/single-post/linkedin-7513747137831104514-ja Article information Article type: Case note Categories: Patents Issues: Support requirement Published on website: 2026-10-08 Display and classification checked: 2026-10-08 IP High Court, Reiwa 5 (Gyo-Ke) No. 10098 — Laundry detergent composition (Judge Shoji) *Even an effect rated “3” constitutes a certain degree of effect. → Support requirement satisfied. (Excerpt from the judgment,

Japanese version: https://www.takaishihideki.com/single-post/linkedin-7513416000617316353-ja Article information Article type: Case note Categories: Copyright, Unfair competition law Issues: Secrecy management Published on website: 2026-10-08 Display and classification checked: 2026-10-08 [Copyright / Trade secrets] Osaka District Court, Reiwa 2 (Wa) 1539 <Judge Takemiya> Even taking into account the importance of the plaintiff's source code, the requirement that information

Japanese version: https://www.takaishihideki.com/single-post/linkedin-7513416207610507264-ja Article information Article type: Case note Categories: Unfair competition law Issues: Defamation Published on website: 2026-10-08 Display and classification checked: 2026-10-08 [Unfair Competition Prevention Act] Tokyo District Court, Reiwa 5 (Wa) 70513, the “Karate dojo” case <Judge Nakashima> Although the plaintiff's name was not stated, a person acquainted with the plaintiff, or a

Japanese version: https://www.takaishihideki.com/single-post/linkedin-7513417095313977344-ja Article information Article type: Case note Categories: Unfair competition law Issues: Contract interpretation Published on website: 2026-10-08 Display and classification checked: 2026-10-08 [Unfair Competition Prevention Act / Contracts] Osaka District Court, Reiwa 5 (Wa) 886 <Judge Takemiya> * The contractual warranty was held to cover only the goods sold, not finished products inco

Japanese version: https://www.takaishihideki.com/single-post/linkedin-7513415778080141312-ja Article information Article type: Case note Categories: Patents Issues: Cancellation of JPO decision Published on website: 2026-10-08 Display and classification checked: 2026-10-08 IP High Court, Reiwa 6 (Gyo-Ke) 10016 [Undried tea paste] <Judge Nakahira> The decision dismissed a request for retrial of a JPO decision upholding refusal. Although the original decision had not yet become

Japanese version: https://www.takaishihideki.com/single-post/linkedin-7513416876903899136-ja Article information Article type: Case note Categories: Trademarks Issues: Trademark infringement, Contract interpretation Published on website: 2026-10-08 Display and classification checked: 2026-10-08 [Trademarks / Contracts] Osaka District Court, Reiwa 4 (Wa) 7393, “MICHEL JURDAIN” <Judge Takemiya> * The injunction claim was partly granted!! * The bankruptcy trustee's understanding

Japanese version: https://www.takaishihideki.com/single-post/linkedin-7513415587394494464-ja Article information Article type: Case note Categories: Trademarks Issues: Trademark similarity Published on website: 2026-10-08 Display and classification checked: 2026-10-08 [Trademarks] IP High Court, Reiwa 6 (Ne) 10007, “Jimny Fan” <Judge Miyasaka> * The mark cannot be assessed by separating its components. The concepts differ. Distinct market spheres have been established. ⇒ The