Nio Patent Infringement Lawsuit: Inside the Courtroom Battle Reshaping China’s EV Ambitions in Europe

Before a verdict is read in a Munich courtroom, there is a certain silence that permeates the room. You can practically picture this silence right now, the same kind of pause that has loomed over Nio’s European aspirations for almost two years. The ruling by the Munich Higher Regional Court, which upheld Audi’s assertion that the ES6 and ES8 names violate its long-standing S6 and S8 trademarks, did not come as a big surprise.

For a Chinese automaker still attempting to persuade European consumers that it belongs in their driveways, the consequences are anything but minor, despite the fact that it arrived as something quieter, almost procedural.

Company Profile — Nio Inc.	Details
Founded	November 2014
Founder & CEO	William Li (Li Bin)
Headquarters	Shanghai, China
Industry	Electric vehicles, battery-swap technology, autonomous driving
Listed On	NYSE (NIO), HKEX, SGX
Key Models	ES6, ES8, ET7, EL6, EL7 (renamed for Europe)
European Markets	Germany, Norway, Netherlands, Sweden, Denmark
Notable Lawsuit	Audi AG vs. Nio — Munich Higher Regional Court, 2024
Verdict	Trademark infringement upheld; ES6 and ES8 names blocked in Germany
Rebranding Move	ES series renamed EL series across Europe
Employees	Approximately 26,000 globally

Audi made a clear, if somewhat obstinate, case. The court twice agreed with the German automaker’s claim that customers might confuse the two model lines. To its credit, Nio didn’t act as though the verdict didn’t hurt. The first ruling was made in January 2023, and the second one confirmed it more recently.

Although the company described it as a disappointment, their actions indicate that they had been bracing themselves for the worst. For European markets, the ES models were rebranded as the EL series. This subtle but significant change allowed showrooms to remain open while the legal dispute continued.

The irony in this situation is difficult to ignore. One of the first Chinese EV manufacturers to think globally from the start was Nio, which was established in 2014. An exceptionally proactive step for a startup of that age, the company had already mapped out trademark and patent portfolios across more than 80 countries by 2015. At the time, the majority of Chinese brands were still concentrating on winning Beijing and Shanghai rather than Stuttgart or Strasbourg.

The kind of trademark squatting that recently affected BYD, Great Wall, Li Auto, and XPeng in the Philippines—where a single Manila company acquired 21 Chinese brand names in a single filing—was prevented by Nio’s foresight. There, Nio had already set up its flags. Germany, however, was unique. Audi was in Germany.

Watching this develop gives the impression that the lawsuit is more about who gets to define the alphabet of the European auto market than it is about two letters and a number. German courts typically take such a legacy seriously, and Audi has been using the S-series name for decades. Years ago, when Daimler temporarily owned the trademark for “Model 3,” Elon Musk’s team was forced to stylize it as “Model ☰” until an agreement was reached.

This caused Tesla to have its own naming disputes. These conflicts are not brand-new. However, as Chinese EV manufacturers push harder into established markets, they are becoming more common, and the rules of the game are being written—sometimes painfully—in real time.

Chinese brands are showing up at any European auto show this year with polished booths, English-speaking spokespeople, and prices that make German executives uneasy. However, not all businesses have bothered to construct the legal scaffolding that lies beneath the showroom gloss. Mostly, Nio did. Even so, they were apprehended.

It’s unclear what will happen next. There is a subtle calculation behind Nio’s reluctance to confirm whether it will appeal. Making an appeal keeps the topic in the news. The EL series can settle into European dealerships without any more drama if the rebrand is accepted. Although no one is quite prepared to place a wager, investors appear to think the company will go with the latter.

The cars are still being sold as of right now. The factories continue to operate. Furthermore, even losing a name could be an odd and costly lesson worth learning early in a market where attention is crucial.