Internet Meme Copyright & Trademark Battle The owners of two popular Internet memes, Keyboard Cat and Nyan Cat, have sued Warner Brothers (“WB”) and 5th Cell Media (“5th”) for unauthorized use of their memes in WB and 5th’s video game series known as Scribblenauts. Memes are all over the internet – I’ll bet there are some on your Facebook timeline right now – so why are they suing over this particular use? Who can and can’t use a meme, and who needs permission to do so?