[Unfair Competition Prevention Act] Tokyo District Court, Reiwa 5 (Wa) 70513, the “Karate dojo” case <Judge Nakashima>
Article information
Article type: Case note
Categories: Unfair competition law
Issues: Defamation
Published on website: 2026-10-08
Display and classification checked: 2026-10-08
[Unfair Competition Prevention Act] Tokyo District Court, Reiwa 5 (Wa) 70513, the “Karate dojo” case <Judge Nakashima>
Although the plaintiff's name was not stated, a person acquainted with the plaintiff, or aware that the plaintiff was the owner of the dojo in question, could identify the “dojo owner” in the post as the plaintiff when reading it in the ordinary way.
⇒ Defamation was established.
Original article (2025-10-16):
Originally posted on LinkedIn: https://www.linkedin.com/feed/update/urn:li:activity:7513416373658886145/
Consultation guide by purpose: https://www.takaishihideki.com/en/single-post/consultation-guide-en
Update history
The update history records only changes actually published, with dates.
2026-10-08: First publication of the LinkedIn original; display, classification, and consultation link set.



