Polanski's ex-wife was murdered in 1969 by the members of the Manson family.
Polanski's lawyer filed a writ at the Los Angeles Superior Court and will pursue legal action against the Academy on grounds that the expulsion was unfair.
Polanski was kicked out last year along with convicted comedian Bill Cosby and after disgraced film producer Harvey Weinstein in 2017.
In a letter sent to the academy this week, a copy of which was obtained by AFP,
Polanski's attorney Harland Braun said the body that hands out the Oscars had failed to follow proper procedure in deciding to expel his client without a hearing, as required by law.
Over the years, at least six women have accused
Polanski of sexually abusing them, with most of them saying the abuse happened when they were minors.
Langer was the fourth woman to accuse
Polanski publicly of sexually assaulting them when they were teenagers.
But on Friday,
Polanski's 84th birthday, Los Angeles Superior Court's Judge Scott Gordon dismissed the director's motion to drop the case and said he must return.
In 1977,
Polanski fled to France after raping Samantha Geimer, who was then 13 years old.
Dariusz Mazur feared
Polanski, 82, could be held in harsh conditions for months in America as his case was processed.
Polanski served 42 days in jail for evaluation after admitting having sex with a 13-year-old girl in 1977.
The events of Roman
Polanski's intriguing life can often be detected in his films.