For a brand the size of McDonald's, "Big Mac" looked untouchable. The company had held the European Union trademark for years, and it used the name on the most famous burger on the planet. Then a small Irish fast-food chain called Supermac's — named after its founder's school nickname — decided to fight back. And it won.
A David-and-Goliath Trademark Fight
Supermac's wanted to expand across Europe. McDonald's opposed it, arguing the name "Supermac's" was too close to "Big Mac" and would confuse customers. Instead of backing down, Supermac's went on the offensive with a clever counter-move: it asked the EU Intellectual Property Office to cancel the "Big Mac" trademark entirely, on the grounds that McDonald's wasn't genuinely using it the way trademark law requires.
In the EU, a registered trademark can be revoked if the owner hasn't put it to genuine use for a continuous five-year period. Owning a trademark isn't enough — you have to actively use it, and you have to be able to prove it with real evidence.
The Evidence That Wasn't Enough
This is where one of the world's biggest companies stumbled. To defend the mark, McDonald's submitted brochures, printouts of its own websites, and signed statements from its own executives. The EUIPO ruled in 2019 that this wasn't enough — self-produced materials and affidavits don't independently prove how much the product was actually sold to real customers. Stunningly, the office revoked the "Big Mac" trademark.
The lesson stings every brand owner: a trademark is only as strong as the evidence you keep. Invoices, sales figures, dated advertising, and third-party proof matter far more than confident assertions — even from a company that sells millions of the product.
The Fight Continued — and Supermac's Pressed On
McDonald's restored parts of the registration on appeal, and the dispute carried into the EU's General Court, which in 2024 again sided with Supermac's on key points — notably ruling that McDonald's had not proven genuine use of "Big Mac" for certain goods, including chicken products. The world's largest burger chain genuinely lost ground on its single most famous product name in Europe, to a chain it had tried to block.
Why This Case Matters Far Beyond Burgers
The Big Mac saga became a textbook example of two principles. First, non-use can kill even a famous mark — scale and fame are no defence if you can't show genuine, documented use. Second, registering broadly (across goods you don't actually sell) is risky: a mark claimed for products you never genuinely use is vulnerable to exactly this kind of attack. It's the flip side of filing an intent-to-use application — eventually, the use has to be real.
The Takeaway
Supermac's didn't beat McDonald's with a bigger legal budget. It won by understanding that a trademark is a living right that has to be fed with evidence, not just registered and forgotten. The "Big Mac" name still sells billions of burgers — but the case is a permanent reminder that in trademark law, use it or lose it applies to giants too. Like the panda charity that forced wrestling to drop "WWF," the little guy occasionally walks away with the most famous initials in the room.
FAQ
Did McDonald's really lose the Big Mac trademark?
In part, yes. The EUIPO revoked the "Big Mac" EU trademark in 2019 after Supermac's challenged it, and the EU General Court again sided with Supermac's on key points in 2024, finding McDonald's had not proven genuine use for certain goods such as chicken products. McDonald's retained the mark for its core beef burger.
Why did McDonald's lose?
It failed to provide independent evidence of genuine use. The materials it submitted — its own brochures, website printouts, and executive affidavits — were judged insufficient to prove the scale of real-world sales required to keep the registration.
Who is Supermac's?
Supermac's is a family-run Irish fast-food chain founded in 1978. It challenged McDonald's "Big Mac" trademark while seeking to expand across Europe, and its win became a landmark "use it or lose it" trademark case.