There was two different arguments:

- whether the monkey has the copyright (PETA's argument): this was smacked down by the court twice, the second court explicitely setting a precedent.

- whether the photograph has coypright: as far as I know he doesn't, as the work was deemed non copyrightable (ruled as not created by a human)

https://en.wikipedia.org/wiki/Monkey_selfie_copyright_disput...