2023 (Gyo-Ke) 10013 [Method of Manufacturing a Pole Housing] <Hibiku Shimizu>
更新日：3 日前
Article information
Article type: Case note
Category: Patents
Topics: Inventive step, Motivation and teaching away
First published on this website: 2026-11-01
Display and classification checked: November 2, 2026
Originally published on Ameblo: 2024-09-24 (Japan time). Full English translation.
2023 (Gyo-Ke) 10013 [Method of Manufacturing a Pole Housing] <Hibiku Shimizu>
“There is motivation to apply … Well-Known Matter 1.” “There is motivation to apply Well-Known Matter 2 ….” “A person skilled in the art could readily have conceived … by applying Well-Known Matters 1 and 2 to the cited invention.”
⇒ Inventive step: not satisfied. “Obviousness upon obviousness” was not treated as an issue.
(Excerpts from the court's reasoning)
(5) Application of Well-Known Matter 2 to the cited invention …
…The cited invention belongs to the technical field of pole housings for electric motors, and Well-Known Matter 1 belongs to the technical field of cylindrical covers and the like used in electric motors, or motors using such covers. On the other hand, …Well-Known Matter 2 is also found to belong to the technical field of tubular housings and the like used in electric motors, or motors using such housings. Accordingly, the cited invention as modified by Well-Known Matter 1 and Well-Known Matter 2 share the same technical field. …Because Well-Known Matter 1 presupposes forming a stepped portion at the end of a motor housing, the cited invention as modified by it naturally raises the need to consider how to form that stepped portion. This can be called a problem inherent in the cited invention as modified by Well-Known Matter 1. …Well-Known Matter 2 presents a specific method (use of a press apparatus) for forming a stepped portion at the end of a tubular member. It can therefore be said to be a means (technology) capable of solving the above …problem naturally inherent in the cited invention as modified by Well-Known Matter 1. …
For these reasons, it is appropriate to find that there was motivation to apply Well-Known Matter 2 to the cited invention as modified by Well-Known Matter 1.
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The first-published date remains unchanged. Display maintenance, classification changes, related-article updates, and text corrections are recorded separately.
November 1, 2026: First published on this website.
November 2, 2026: Added article information, classification, topics, language navigation, related articles where the same case was confirmed, consultation guidance, and SEO. The original text and first-published date were preserved.
