Japan's top court rules AI cannot be named as patent inventor
Original: AI can't be listed as inventor on patent applications, Japan's top court rules
Why This Matters
The ruling clarifies Japan's IP framework at a critical time as AI-generated innovations accelerate globally.
Japan's Supreme Court has ruled that AI systems cannot be listed as inventors on patent applications, affirming that inventorship under Japanese patent law requires a human being. The decision sets a legal precedent for AI-related IP rights in Japan.
Japan's Supreme Court has issued a landmark ruling stating that artificial intelligence cannot be designated as an inventor on patent applications filed in Japan. The court upheld the position that under Japan's Patent Act, only natural persons — human beings — qualify as inventors. The case reflects a growing global debate over intellectual property rights in the age of generative AI, as AI systems become increasingly capable of producing novel technical solutions autonomously. Similar rulings have been issued in the United States, the United Kingdom, and the European Patent Office, all rejecting AI inventorship. Japan's top court decision aligns the country with this international legal consensus. The ruling does not address whether AI-assisted inventions — where a human uses AI as a tool — can be patented, leaving room for continued legal interpretation in that area.