Harvey Weinstein has been found guilty of sexually assaulting his former assistant but not guilty of forcing oral sex on a teenage model.

The disgraced movie mogul was convicted of first-degree committing a criminal sexual act on Wednesday afternoon and faces years longer in jail.

Weinstein's retrial on rape and sexual assault charges before a New York Supreme Criminal Court jury in Manhattan lasted well over a month.

The ailing 73-year-old protested his evidence in an interview with the Daily Mail from his cell in Bellevue Hospital last week, and vowed revenge.

He was accused of sexually assaulting production assistant Mimi Haley in 2006, aspiring actress Jessica Mann in 2013, and model Kaja Sokola in 2006.