Tokyo District Court, Reiwa 5 (Wa) 70272 [Jig for lifeline support posts] <Presiding Judge Kokubu>
Updated: 4 days ago
Article information
Article type: Case note
Category: Patents
Topics: Claim interpretation, Patent corrections
First published on this website: October 2, 2026
Case number (as stated in the source): Tokyo District Court, Reiwa 5 (Wa) 70272
Display and classification checked: October 2, 2026 (not a re-review of the legal analysis)
Tokyo District Court, Reiwa 5 (Wa) 70272 [Jig for lifeline support posts] <Presiding Judge Kokubu>
* Claim elements not satisfied.
1. No literal infringement
Element C: “U-shaped bent portion formed at an end of a rectangular plate.”
The invention's bent portion is formed by bending the end of the rectangular plate. The defendant's hook is at the end of a side plate and is not continuous with the bottom plate corresponding to the rectangular plate.
Element E: “Length of the rectangular plate > flange width.”
The defendant's bottom plate is 100 mm long, which is not longer than the flange width of 100 or 125 mm.
2. No equivalence
The differences, including the position of the bent portion, concern essential features absent from the prior art (first requirement for equivalence).
The defendant's structure also cannot achieve the invention's effects, such as compactness (second requirement).
Original article: https://lnkd.in/eW4RJ4Yz
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Update and correction history
Substantive corrections and supplements are recorded separately from classification, related-article, and display maintenance.
October 2, 2026: First publication of the author's LinkedIn text. Article type, classification, issue tags, source, and consultation guide were added.
Consultation and inquiries
October 2, 2026: Updated topic tags.
2026-10-13: aligned related-article, topic-guide, and other managed links with the articles’ published URLs. The original article text was not changed.
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