The cat — real name: Tardar Sauce — has appeared on Today, Good Morning America and even American Idol. She has starred in a commercial for Honey Nut Cheerios and became an official "spokescat" for Nestle's Friskies cat food in 2013, CNN Money reported.
It's been reported that the company raked in anywhere from $1 million to $100 million in its first few years in existence.
Naturally, the lucrative cat soon found itself at the centre of an intellectual property dispute that's raged since 2015 between Grumpy Cat Limited and the Grenade beverage company.
On Monday evening, an eight-person jury in Santa Ana, California, awarded Grumpy Cat Limited US$710,001 ($971,000) in damages, according to court documents.
It all began in 2013, when Nick and Paul Sandford, the owners of Grenade struck a licensing deal with Grumpy Cat Limited to sell a line of iced coffees called "Grumpy Cat Grumppuccino".
But in 2015, the beverage company decided to create a line of "Grumpy Cat Roasted Coffee," which was not in the original deal, prompting Grumpy Cat Limited to file a copyright lawsuit in federal court.
"Ironically, while the world-famous feline Grumpy Cat and her valuable brand are most often invoked in a tongue-and-cheek fashion, defendants' despicable misconduct here has actually given Grumpy Cat and her owners something to be grumpy about," the complaint stated.
Grumpy Cat Limited also claimed that Grenade was selling unauthorised Grumppuccino T-shirts, which "blatantly infringe on the Grumpy Cat copyrights and Grumpy Cat trademarks" without sharing the profits and that the beverage company wasn't paying the agreed-upon percentage of profits from the iced coffee.
Grenade then fired back with a countersuit in which it claimed that Grumpy Cat didn't hold up its end the deal, which was to promote the iced coffee.
The countersuit stated that Grumpy Cat Limited claimed the unhappy cat would star in a blockbuster movie alongside comedy superstars Will Ferrell and Jack Black. But the only movie Grumpy Cat has ever starred in was Grumpy Cat's Worst Christmas, which was made for the Lifetime Network and earned a dismal 5.1 out of 10 stars on IMDb.
During the week-long trial at which Grumpy Cat herself made an appearance, Grenade's attorney Brian Kinder said the Grumpy Cat company didn't support the joint venture.
Kinder pointed to the fact that Grumpy Cat only posted about the iced coffee 17 times on social media. He also cited a Grumpy Cat appearance on the Fox News show Fox and Friends, Courthouse News reported. According to Kinder, the cat's handlers were supposed to say, "Watch out, Starbucks. The cat's coming for it," but didn't.
The jury wasn't swayed.
"Grumpy Cat feels vindicated and feels the jury reached a just verdict," said David Jonelis, the attorney for Grumpy Cat Limited, according to Courthouse News. The cat frowned.