Tokyo District Court, Reiwa 5 (Wa) 70495 [Spindle motor] (Claim for employee-invention remuneration) <Presiding Judge Nakashima>
Updated: 6 days ago
Article information
Article type: Case note
Category: Patents
Issues: Employee inventions; Creators and inventors
First published on this website: 2026-10-03
Display and classification checked: 2026-10-03
Tokyo District Court, Reiwa 5 (Wa) 70495 [Spindle motor] (Claim for employee-invention remuneration) <Presiding Judge Nakashima>
⇒ Claim dismissed (inventorship denied).
By the time the plaintiff submitted an explanatory document to the supervisor, the invention of Di and others had already been announced.
At the time, the plaintiff worked in Shiga while Bi and others worked in Kyoto. There was no work-related contact, and the plaintiff's proposal had not been circulated to Bi and others.
The plaintiff's proposal was clearly different from the conception of the patent at issue.
The plaintiff did not attend the meeting at which the invention of Di and others was announced and did not belong to the development department.
The plaintiff's proposal differed in configuration from the invention of Di and others.
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Update and correction history
Substantive corrections, additions, classification, related-article and display changes are recorded separately from the website's first-publication date.
2026-10-03: First publication from the LinkedIn original; article information, issue tags, language navigation and consultation guidance were added.
2026-10-13: aligned the canonical and search-index URLs with the published URL. The original article text was not changed.
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