how can i stop someone to add false posters to my movies

This guy https://www.imdb.com/name/nm9668184/?ref_=nv_sr_7?ref_=nv_sr_7 is keeping on changing the poster of The truth by Kore-Eda(12 times now) The movie will make the next Venice festival opening and i need to stop this guy cause the press is taking his false poster to talk about the movie. Is there a way to stop that?
Thanks