Tokyo District Court order, Reiwa 5 (Yo) 30402 [Siphon rain-gutter system] <Nakashima>
Updated: Oct 9
Article information
Article type: Case note
Categories: Patents
Topics: Claim interpretation
First published on this website: 2026-10-07
Display and classification checked: 2026-10-07
Tokyo District Court order, Reiwa 5 (Yo) 30402 [Siphon rain-gutter system] <Nakashima>
* Based on the specification's explanation and other material, the claim term “lid member” was construed as not requiring complete closure.
⇒ The claim element was satisfied.
(Excerpt from the decision, translated)
... According to the claim elements and the descriptions in Specification 2, the “lid member” in the claim element includes shapes not positioned so as to close the outlet opening completely. It is sufficient for the member to be positioned above the outlet. ... Applying this to the respondent's product, ... although its outlet-facing portion is not positioned to close the outlet opening completely, it is found to be positioned above the outlet. Accordingly, the outlet-facing portion of the respondent's product satisfies the “lid member” in claim element 2-2-D. ...
* Action on the merits: Reiwa 5 (Wa) 70402
https://lnkd.in/g97fU9pv
Original article (2025-11-14):
https://lnkd.in/g9h8N5n3
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2026-10-07: First published from the original LinkedIn post; categories, article information, and consultation navigation added.
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