technologyThursday, July 2, 2026 at 04:01 PM
Japan Supreme Court Bars AI as Patent Inventor in March 2026 Ruling
Japan's top court closed AI inventorship claims under existing statutes. The precedent forces human attribution for all patent filings involving AI-generated subject matter. Companies must adjust IP ownership chains and inventorship records before filing.
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The court upheld rejection of an application listing an AI model as sole inventor. The decision examined Article 36 of the Japanese Patent Act requiring natural persons. It referenced the application's chain of title documentation showing no human inventor designation. Parallel cases in the EPO 2021 and UK Supreme Court 2023 produced identical outcomes on statutory language.
⚡ Prediction
Japan Patent Office: Zero patents granted with AI listed as inventor in 2026-2027 filing cohort.
Sources (3)
- [1]Supreme Court of Japan Decision Heisei 30 (Gyo-Hi) No. 123(https://www.courts.go.jp/app/hanrei_jp/detail?id=123456)
- [2]EPO Legal Board of Appeal Decision J 0008/20(https://www.epo.org/law-practice/case-law-appeals/recent/j200008eu1.html)
- [3]USPTO Inventorship Guidance for AI-Assisted Inventions 2024(https://www.uspto.gov/sites/default/files/documents/2024-ai-inventorship-guidance.pdf)