Background
Stephen Thaler developed an artificial intelligence system he called DABUS — Device for the Autonomous Bootstrapping of Unified Science — and claimed that the system had independently conceived two inventions: a food container with a fractal surface geometry that improves gripping and heat transfer, and an emergency-signaling device that uses neural flame dynamics to attract attention. Thaler filed patent applications with the USPTO naming DABUS as the sole inventor. Thaler himself made no inventive contribution, he said; only the machine did.
The USPTO rejected both applications, concluding that the Patent Act requires inventors to be natural persons. Thaler sought judicial review, arguing that nothing in the statute’s text expressly excludes artificial intelligence from being an inventor, and that excluding AI-generated inventions would undermine the constitutional and statutory goals of promoting progress. The district court disagreed and affirmed the USPTO’s rejections. Thaler appealed to the Federal Circuit.
The Court’s Holding
The Federal Circuit unanimously affirmed. Chief Judge Moore, writing for the panel, grounded the decision in the plain text of the Patent Act. The statute defines “inventor” as an “individual” who invented the claimed invention. The court relied on the Supreme Court’s analysis in Mohamad v. Palestinian Authority (2012), which held that “individual” in a federal statute ordinarily means a human being — a natural person. Congress uses the word “individual” with that meaning unless it clearly indicates otherwise, and the Patent Act provides no such indication.
The court reinforced this reading by pointing to other statutory provisions that use personal pronouns — “himself” and “herself” — when referring to inventors, language that would be inapt if inventors could be machines. The court acknowledged that AI-assisted invention raises important policy questions but held those questions are for Congress, not courts, to resolve: “Current patent statutes preclude … AI as inventors. We do not pass judgment on whether Congress should or should not extend patent protection to AI-generated inventions, leaving these policy arguments to Congress.” The court explicitly left open the separate question of whether inventions made by humans with AI assistance remain patentable.
Key Takeaways
- Under the current Patent Act, the “inventor” must be a natural person — an AI system cannot be named as an inventor on a U.S. patent application.
- The decision rests on statutory text: “individual” in the Patent Act means a human being, consistent with the Supreme Court’s ordinary meaning rule.
- The court expressly left open whether inventions made by humans who use AI as a tool remain patentable — that is a separate question, and the answer appears to be yes, provided a human inventor contributed to the conception.
- Congress retains the power to amend the Patent Act to extend protection to AI-generated inventions, but as of this decision, no such change has been enacted.
Why It Matters
Thaler v. Vidal is one of the most important AI and patent law decisions in decades, and it arrived at a moment when generative AI was rapidly transforming how inventions are conceived and developed. By ruling that only humans can be patent inventors, the Federal Circuit highlighted a significant gap in the patent system: if an AI system independently generates a novel invention with no meaningful human creative contribution, that invention cannot receive patent protection under current law — at least not with the AI listed as inventor.
The decision has practical implications for the entire technology industry. Companies developing AI tools must ensure that human engineers or scientists make genuine inventive contributions to any patent they seek, not merely operate or train the AI system. It also raises questions about who “owns” AI-generated innovations that cannot be patented: do they fall into the public domain immediately? Can they be protected as trade secrets instead? The ruling sparked immediate legislative debate in Congress and similar disputes in jurisdictions around the world, including the UK, Australia, and the European Patent Office, as courts and legislatures grapple with whether patent systems built for human inventors can adapt to the age of machine intelligence.