Nyanify, Inc. and Christopher Orlando Torres, the online celebrity Grumpy Cat brand owner, have sent lawyer letters to the two Meme coin project parties, "Nyan Meme Coin" and "GrumpyCat Coin", informing them of alleged trademark infringement and asking them to stop the infringement. "This infringing use has created actual confusion among consumers about the origin of the merchandise, leading them to believe that this coin is somehow related to our customer," the attorney's letter reads.

It is reported that Grumpy Cat became popular in 2012 with 14 million fans, but died in 2019.