The eldest brother of late Canto-pop queen Anita Mui Yim-fong has sued the production company behind a lavish biopic currently screening in Hong Kong over alleged trademark violations.

Peter Mui Kai-ming on Thursday filed a High Court claim accusing Edko Films of infringing his rights to two registered trademarks, including “Anita Mui”, without his authorisation in the production, promotion and content of the film Anita, causing him to suffer an unspecified amount in financial losses.