Changyu Wine used the trademark "Cabernet Sauvignon" more than 0/00 years ago, and was later registered as a trademark, which is still a well-known trademark. Other wine companies thought it would be better to add "Cabernet Sauvignon" to everything they sold, which led Changyu Wine to sue other companies. Other companies think that Cabernet Sauvignon is the name of wine, and anyone can use it without any meaning.

So, Zhang Yu presented the trademark of Cabernet Sauvignon 100 years ago, which was remarkable through use and won the case.