Bill Cosby's legal team is seeking another chance to dismiss his criminal sexual-assault case filed by former Temple University employee Andrea Constand. The comedian is scheduled to face a Pennsylvania preliminary hearing in just over a week over second-degree aggravated indecent assault charges.

Cosby, once known as America’s favorite dad, has appealed to the state Supreme Court to call off the May 24 preliminary hearing and allow him to appeal his case. A county judge and the state's Superior Court have previously rejected the defense arguments. More than 50 women have come forward accusing Cosby of drugging and sexually assaulting them over the decades.

"When a district attorney acts for the Commonwealth and assures a criminal defendant that he will never be prosecuted for a particular event, that promise must be enforced," the lawyers wrote in a brief posted Friday on the court's website. "And it certainly must be enforced where, as here, the defendant detrimentally relies on that assurance in waiving constitutional rights, including his right against self-incrimination."

The 78-year-old actor was arrested last year after his deposition in Constand's case became public and Montgomery County prosecutors reopened the file against him. Cosby faces felony sexual assault charges for drugging and abusing Constand. After his arrest, the actor was released on a $1 million bail.

Cosby is also facing several defamation lawsuits from some of his alleged victims.