I mean, we joke (Pac-Mom: Maze Madness when?), but unless I am mistaken, the matter of copyright isn't concerning the Ms. Pac-Man character - it's over the Ms. Pac-Man game. So far as we know, Bandai Namco owns the Ms. Pac-Man IP and is free to use the character whenever they want (they did back in March on social media), but they don't want to, presumably (but not guaranteed) as it draws attention to the game they do not fully own and do not want to distribute - or alternatively, AtGames got more rights from the lawsuits.Are you referring to the main theme of beloved arcade game Pac-Mom?
So, for instance, it's not like they could avoid the IP issue by editing the Ms. Pac-Man arcade game to use Pac-Mom instead - that's still GCC's game, and that means AtGames gets royalties. What I wonder is if the same royalty clause applies to other content from the game, like remixes of the music. If these remixes are being used without a hitch, then I suppose then that content derivative of Ms. Pac-Man is fine, with the only thing being disputed being the literal game itself.