UK Supreme Court rules AI cannot be an inventor

If an algorithm designs a novel product without human guidance, can the machine itself own the breakthrough? The UK's highest court just gave its final answer, and it is a hard no.

The UK Supreme Court ruled that artificial intelligence cannot be legally named as an inventor on patent applications. The unanimous decision from a five-judge panel puts an end to a four-year legal campaign launched by technologist Stephen Thaler, who sought to register patents for his AI system, DABUS.

The ruling closely tracks decisions across the Atlantic, where the US Patent and Trademark Office rejected Thaler's petitions and the US Supreme Court refused to take up his appeal.

No legal personhood for code

The dispute dates back to 2019, when Thaler applied for two UK patents covering a food and drink container and a flashing light beacon. He maintained that DABUS devised both concepts completely autonomously, leaving human names off the inventor line entirely.

The UK Intellectual Property Office promptly rejected both filings, pointing out that the Patents Act 1977 requires an inventor to be a natural person. Thaler lost challenges at the High Court and Court of Appeal before landing in front of the Supreme Court.

Lord David Kitchin, delivering the lead judgment, stated that DABUS is simply a machine without legal personality. He added that the statute provides no mechanism for an AI to devise inventions in a legal sense, nor does it allow a machine owner to automatically inherit patent rights from an algorithm.

Interestingly, the justices did not actually evaluate whether DABUS genuinely created the designs. They took Thaler's technical claims at face value and focused entirely on the statutory wording, concluding that an application lacking a human inventor is simply void.

Why it matters

We think the UK Supreme Court drew a very sensible line here. For corporate R&D teams and individual builders using frontier models to accelerate design work, the takeaway is crystal clear: keep human names on the paperwork. Any attempt to be cute and credit an AI model as the sole inventor will instantly kill your patent protection.

The decision also shields the patent office from an immediate administrative nightmare. If autonomous machines could hold inventor status, deep-pocketed tech giants with massive compute clusters could churn out millions of algorithmic variations overnight, effectively choking the entire patent system and locking down vast fields of innovation.

That said, the ruling leaves a massive question mark dangling over the industry. As models take on deeper autonomous engineering roles, the boundary between AI-assisted and AI-generated will continue to blur. Both UK and US patent authorities admit these questions are legitimate, but until lawmakers rewrite the century-old rulebooks, AI remains a tool in the eyes of the law, not a creator.