Patent Case Law and Intellectual Property Practice Blog

日本語版 Article information Type: Case note Category: Patents Topics: Claim construction、Doctrine of equivalents First published on this site: 2026-10-09 Case / source information: Osaka District Court, Reiwa 4 (Wa) No. 11025 Display and classification checked: 2026-10-09 Osaka District Court, Reiwa 4 (Wa) No. 11025 — Mite-trapping mat (Judge Matsuami) *A “porous air-permeable bag” must have a structure that retains its contents inside and prevents their dispersal. → Claim limit

日本語版 Article information Type: Case note Category: Patents Topics: Claim construction First published on this site: 2026-10-09 Case / source information: IP High Court, Reiwa 6 (Ne) No. 10019 / Tokyo District Court, Reiwa 4 (Wa) No. 18830 Display and classification checked: 2026-10-09 IP High Court, Reiwa 6 (Ne) No. 10019 — Rolling device (Judge Miyasaka) *The appellate court rejected the narrow construction adopted below (Tokyo District Court, Reiwa 4 (Wa) No. 18830), but fo

Japanese version: https://www.takaishihideki.com/single-post/linkedin-7513417554057510913-ja Article information Article type: Case note Categories: Patents Issues: Claim construction Published on website: 2026-10-08 Display and classification checked: 2026-10-08 Tokyo District Court, Reiwa 5 (Wa) 70393 [Foldable and stowable temporary protective fence] <Judge Nakashima> * The problem was to reduce weight and make the structure more compact. ⇒ A “pivoting plate-shaped member”