Bill Cosby challenging legal move to register him as a sex predator

Bill Cosby's lawyers are challenging the legality of the process under which a Pennsylvania board recommended he be classified as a sexually violent predator.

The comedian was today found guilty of drugging and sexually assaulting Andrea Constand in 2004. Source: 1 NEWS

They also claimed in a court filing last week that the state's recently revised sex offender registry law is unconstitutional and should not be applied retroactively.

The 81-year-old Cosby is due to be sentenced September 24 on three counts of aggravated indecent assault.

He was convicted in April of drugging and molesting a woman at his suburban Philadelphia mansion 14 years ago.

He plans to appeal.

A judge must decide whether to accept the finding he is a predator.

The designation would require the former TV star to receive sex offender counseling by a state-approved provider at least monthly for the rest of his life.