Bill Cosby arrived at court in the US city of Philadelphia on Tuesday (February 2) as he faces charges of sexually assaulting a woman in 2004.
The woman first brought her allegations to police attention in 2005 but they declined to prosecute, citing a lack of evidence.
As other women across the US have come forward with similar allegations against the 78-year-old comedian, prosecutors re-opened the case. If convicted, he could face a decade behind bars.
Cosby’s lawyers were hoping to get the criminal charges against him thrown out.
They claim there was a binding commitment by a previous district attorney not to prosecute the a decade ago.