Tokyo District Court, 2012 (Wa) 12351 [Rice Cake] — <Damages> Article 102(2): 90% reduction for noncontribution

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Article type: Case note

Category: Patents

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First published on this website: 2026-11-01

Display and classification checked: November 2, 2026

Originally published on Ameblo: 2025-04-13 (Japan time). Full English translation.

https://ameblo.jp/hideki-takaishi/entry-12893715653.html

Tokyo District Court, 2012 (Wa) 12351 [Rice Cake]

<Damages> Patent Act, Article 102(2): 90% reduction for noncontribution(10% contribution) Approximately ¥800 million awarded

(1) Significance of the invention (appearance of grilled rice cakes; prevention of expansion)

(2) Advertising on the packaging of the defendant's products: indicating “slits made in the cut rice cakes”

(3) The defendant's securities reports and other materials described improved business performance attributable to adding the slits.

https://www.nakapat.gr.jp/ja/legal_updates_jp/%E6%9D%B1%E4%BA%AC%E5%9C%B0%E5%88%A4%E5%B9%B3%E6%88%9024%E5%B9%B4%E3%83%AF12351%E3%80%90%E9%A4%85%E3%80%91/

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