O.J. Simpson's lawyers have been given until mid-April to file their written Nevada Supreme Court appeal for a new trial for the former football star in his Las Vegas armed robbery case, Simpson attorney Patricia Palm said this week.

A state high court order on Dec. 20 set a 120-day schedule for Simpson's claim that his fame stemming from his 1995 acquittal in Los Angeles in the deaths of his ex-wife and her friend meant he couldn't get a fair trial in Las Vegas, and that his trial lawyer botched his case.

The order voided a Monday deadline for what would have been expedited high court review.

Palm said she and Simpson attorneys Ozzie Fumo and Tom Pitaro were encouraged that the seven-member Supreme Court agreed to accept a 30-page appeal.

The full seven-member court has not decided whether to hear oral arguments.

Simpson, 66, already lost an initial appeal to the state Supreme Court, the only appeals court in Nevada.

He's in the fifth year of a nine-to-33 years prison sentence after a jury found him guilty of kidnapping, armed robbery and other charges for leading a group of armed men in a September 2007 confrontation with two sports memorabilia dealers at a Las Vegas casino hotel.

One co-defendant who stood trial and was convicted with Simpson and four former co-defendants who pleaded guilty to felonies before trial and testified against Simpson have served prison time and gone free. Simpson won't be eligible for parole until he is 70.

Clark County District Court Judge Linda Marie Bell held five days of hearings last May before ruling Nov. 26 that Simpson's trial attorney, Yale Galanter, made errors during Simpson's 2008 trial and his initial appeal to the state Supreme Court.