EUIPO Tells OpenAI Its Name Is Too Generic to Own: What Class 42 AI Brands Must Learn Now

When Fame Is Not Enough

A brand recognised by hundreds of millions of people just lost a trademark battle over its own name. On 15 July 2026, the General Court of the European Union delivered its judgment in Case T-555/25, OpenAI, Inc. v EUIPO, confirming the partial refusal to register the word mark OPENAI for goods and services across Classes 9, 42 and 45. The Court dismissed the appeal in its entirety and ordered OpenAI to pay costs.

The ruling is not merely a footnote in a corporate legal dispute. It is a judicial statement about how AI-era brand names will be assessed under EU trade mark law, and the logic applies far beyond one San Francisco company.

The Descriptiveness Problem

The EUIPO's original refusal rested on a straightforward reading: the combination of 'open' and 'AI' was held to convey, for at least a non-negligible share of the English-speaking public within the EU, that the goods and services in question were provided using, or connected with, openly accessible artificial intelligence. Put plainly, the name described the product rather than identified its maker.

OpenAI pushed back on three grounds. The company argued that 'open' carries multiple meanings, that 'OPENAI' is a coined compound with no fixed definition, and that comparable marks had been accepted by EUIPO before, with the word mark registered in more than 30 other jurisdictions, including the United Kingdom and Singapore. The Court rejected all three arguments. It held that the phrase was not an unusual linguistic combination in English, and confirmed that registrations in other legal systems carry no binding weight under EU trade mark law.

The scope of the refusal is worth pinning down precisely. It covers specified software and information-technology goods and services: the commercial heart of what OpenAI does. It does not prevent OpenAI from using the name. The OpenAI logo, as a figurative mark, remains protected. A separate route is still available: if the company can demonstrate that EU consumers have come to associate 'OPENAI' with a single commercial source through long and intensive use, acquired distinctiveness under Article 7(3) EUTMR may yet save the word mark. That examination was deferred, pending this judgment becoming final. An appeal to the European Court of Justice also remains possible.

Why This Matters Across Class 42

The ruling arrives at an uncomfortable moment for the broader AI technology sector. Clarivate's 2026 Trademark Filing Trends Report observed that, despite rapid commercial influence, most major AI companies have not featured among the highest trademark filers, suggesting brand formalisation in the sector is still emerging. The OpenAI case illustrates precisely why that lag is dangerous.

UK filings tell a similar story. AI Business Dispatch analysis of IPO data shows just 1,908 Class 42 UK trademark filings recorded in 2026 Q3, down 74.2% on the prior period. Among active SIC 69.10 companies (legal and professional activities businesses, many of which now offer AI-assisted services) 99.1% hold no Class 42 trademark at all. Only 130 new SIC 69.10 companies were incorporated in the same quarter, a fall of 81.6%. The sector is contracting on formation and almost entirely unprotected on the trade mark register (AI Business Dispatch analysis of Companies House and IPO data, as of July 2026).

The pattern is consistent with what practitioners at the UKIPO are observing more broadly. World IP Review reported this week that UK trade mark attorneys have adopted what one described as a 'scatter-gun approach' to filing trade mark and copyright registrations, particularly around AI-generated deepfakes, in the absence of a dedicated personality right. The register is busy with revocations and cancellations; pendency times are described as 'woeful'. Meanwhile the UKIPO is preparing to deploy AI tools itself to manage a growing volume of non-traditional filings (sounds, gestures, motion marks) from September.

The Naming Trap

There is a long tradition of brand builders discovering too late that a term which feels proprietary is actually generic. 'App store' and 'App Market' fought a similar battle years ago. 'Artificial intelligence' was a term coined in 1956 by John McCarthy; 'open source' has been in common parlance since the late 1990s. Combining the two into a compound word does not automatically create distinctiveness in the eyes of a trade mark examiner, or a court.

The EUIPO's 2026 Guidelines, which entered into force on 1 July, reinforce the point: businesses can no longer rely on broad, generic or strategically vague wording when protecting brands in the EU. Virtual goods must be specified with clarity and precision. The same discipline applies to brand names themselves, particularly in Classes 9 and 42, where 'AI' is increasingly common in specifications.

AI-generated brand names carry their own risk. Many may be descriptive, lack distinctive character, or conflict with earlier rights: a point the EUIPO's own published guidance now flags directly.

What Brand Owners Should Do This Week

If your company's name, product name, or service brand contains 'AI', 'Open', 'Smart', 'Auto', or any other term that describes a characteristic of artificial intelligence services, the OpenAI ruling is your wake-up call. Before investing further in that name, commission a descriptiveness assessment against the classes you intend to cover, particularly Classes 9, 42 and 45. If you already hold a word mark in those classes in the UK, check whether your specification is specific enough to survive a revocation challenge in the post-SkyKick environment.

For those who have not yet filed: the window is narrowing, not widening. The UKIPO's April 2026 fee increase (the first since 1998 for trade marks) has already raised the cost of multi-class portfolios. Doing nothing is not a neutral choice.

Consult a qualified trade mark attorney and review your portfolio on TrademarkDashboard before the acquired distinctiveness route becomes your only remaining option.