The 'OPENAI' Trademark Rejection Is a Warning Every AI Brand Must Heed

When Recognition Is Not Enough

Fame does not equal registrability. That is the blunt lesson of OpenAI, Inc. v EUIPO (Case T-555/25), decided on 15 July 2026 by the General Court of the European Union. The court upheld the EUIPO's refusal to register the word mark OPENAI across a range of goods and services: specifically software, cloud-computing and identity-verification, covered by Nice Classes 9, 42 and 45. The judges found the term descriptive under Article 7(1)(c) of the EU Trade Mark Regulation. To the relevant public, "open" signals freely accessible and "AI" signals artificial intelligence, so the compound simply describes the product category rather than identifying a single commercial origin.

OpenAI had argued that "OPENAI" was a coined term, that comparable marks had been accepted before, and that registrations in more than 30 other countries (including the United Kingdom and Singapore) should carry weight. The court rejected all three arguments. Prior EUIPO practice was not binding; overseas registrations were irrelevant under EU trade mark law; and the combination was not an unusual enough linguistic construction to escape the descriptiveness bar.

One path remains open, literally. The court did not close off an acquired-distinctiveness claim under Article 7(3). OpenAI can present consumer-recognition evidence to argue that, whatever the words mean in the abstract, the market has come to associate them with one business. That process now restarts before the EUIPO. The ruling can also be appealed to the European Court of Justice.

Class Stakes: 9, 42, and 45 in the Crosshairs

The refusal is class-specific, and brand owners should read it that way. The application, filed in June 2023, covered Classes 9, 38, 42 and 45: the quartet that any serious AI platform will need. Class 9 covers software and downloadable applications. Class 42 covers software-as-a-service and technology development services; the 13th edition of the Nice Classification, in force since 1 January 2026, now explicitly includes "artificial intelligence as a service (AIaaS)" in Class 42. Class 45 covers identity verification and legal services. These are precisely the classes where "AI" in a brand name is most likely to be read as descriptive by examiners, and where the EUIPO's 2026 Guidelines, in force from 1 July, demand precision and evidence over vague strategic wording.

For any business whose trading name or product brand contains the string "AI" (and there are thousands of them) this ruling is a stress test. The court confirmed what examiners have long suspected: a name built around AI's most obvious descriptor is fighting uphill in Classes 9 and 42 from the moment of filing.

Delhi, Data Training, and the Other Shoe

The timing of a second ruling, nine days later, is significant. On 24 July 2026, Justice Amit Bansal of the Delhi High Court refused news agency ANI Media an interim injunction against OpenAI in ANI Media (P) Ltd v Open AI OpCo LLC. The court held, on a prima facie basis, that OpenAI's storage of ANI's articles to train ChatGPT's large language models falls within the fair-dealing exception under Section 52(1)(a) of India's Copyright Act 1957, and therefore does not amount to infringement at the interim stage.

The decision is explicitly limited: it decides the injunction application only, the main suit continues, and the fair-dealing reading has never previously been tested against foundation-model training in India. But the framing matters. MLex noted that the ruling may prove influential not because it settles whether AI training is lawful, but because it reorients the dispute: from training data to AI outputs. That shift carries implications for every content owner, publisher and news agency that has been relying on the prospect of stopping training as a lever for licensing negotiations.

Brand owners face pressure on two fronts. On the trade mark side, AI-inflected names are struggling for registrability in the EU's most commercially important classes. On the copyright side, the training-data argument that content owners hoped would force licensing deals looks weaker after Delhi, at least at interim stages.

The UK Picture: Branded and Unprotected

The tension between AI's commercial momentum and its IP formalisation gap is sharply visible in UK data. AI Business Dispatch analysis of Companies House and IPO data (as of July 2026) shows just 172 new SIC 69.10 companies incorporated in 2026-Q3, a fall of 75.6% on the prior period, consistent with a broader cooling in new AI-adjacent legal-services entity formation. Yet the trademark picture is even starker. Class 35 UK filings, covering business services, the class most commonly used by AI platform operators to protect their trading names and service delivery brands, reached only 3,526 in 2026-Q3, down 67.4% on the prior period.

Most striking: 98.4% of active SIC 69.10 companies hold no Class 35 trade mark whatsoever, per AIBD analysis of IPO data. This is not a niche oversight. It means the overwhelming majority of AI-adjacent businesses operating under a trading name have no registered protection for the services they sell under that name, and would face an uphill opposition if a competitor filed something similar first.

Clarivate's Trademark Filing Trends Report 2026 reaches a compatible conclusion from a different angle: despite their rapid commercial influence, most major AI companies did not feature among the highest trademark filers, suggesting brand formalisation in the sector is still emerging. "Still emerging" is a polite way of saying exposed.

What the EUIPO Ruling Changes for the UK

There is a Brexit-era complication that UK brand owners cannot ignore. The EU General Court's findings on descriptiveness are not binding on the UKIPO. OpenAI apparently holds trademark registrations in the UK, and the court itself noted that such overseas registrations carry no weight in the EU. But the underlying logic, that "open" plus "AI" describes a product category rather than an origin, will inform how UK examiners read similar applications. The UKIPO's September overhaul, when it begins deploying AI tools to manage non-traditional filings and tightens search practice, is likely to sharpen that scrutiny further.

Brand owners filing or renewing marks in Classes 9, 42 and 45 who have leaned on AI terminology in their specifications should treat this ruling as a prompt for review.

One Action This Week

If your trading name, product line or service description contains the word "AI" (as a suffix, prefix or standalone term) run it through the UKIPO register and the EUIPO database before your next filing cycle. The question is not whether your brand is well-known. It is whether examiners will read your name as describing a category rather than identifying you. TrademarkDashboard (trademarkdashboard.com) offers free Class-level searching across the UK register; a paid clearance report will score sound-alikes and flag Nice-class conflicts that a simple name search misses. For Class 42 filings in particular, the new AIaaS classification entry in the 13th Nice edition means your specification wording may need updating regardless of what you call yourself. Speak to a trade mark attorney before you file.