Grumpy Cat is no longer with us. Tardar Sauce passed away in 2019 but the humans she shared a house with are keeping her memory alive. They do this in the form of merchandise, but also in court where they have filed over a dozen lawsuits against sellers of counterfeit and copyright-infringing products.
Source: “Grumpy Cat” is Long Gone But Her Copyright Lives On in Court * TorrentFreak