Judy Huth, who was 16 at the time, said in her testimony at the case that Cosby, whom she met while filming a movie in a park near Los Angeles, sexually assaulted her a few days later.
The jury decided that Cosby must pay $500,000 in damages to Huth, who is now 64 years old.
After the #MeToo movement began, more than 50 women accused Cosby, known as “America’s father,” of sexually assaulting them since the mid-1960s. Cosby denies the allegations against him.
Cosby, who was convicted in 2018 of drugging and sexually assaulting a woman in 2004, was sentenced to 10 years in prison.
Less than a year ago, the Pennsylvania Supreme Court overturned Cosby’s conviction and released Cosby, who had spent three years in prison.
The lawsuit, filed in 2014 in Santa Monica, California, was delayed for years due to criminal prosecution of Cosby.
In his deposition, Huth said Cosby gave him alcohol “as part of a game” and then took him to his bedroom at the Playboy Mansion, forcing him to have sex despite his opposition.
Huth, who could not hold back his tears at the trial, stated that he “found himself in a stalemate and felt stupid” after the incident. Their lawyer showed the jury a photo of Huth and Cosby inside the mansion.
Cosby did not directly attend the hearing. His lawyers, however, presented the court statement in 2015, in which Cosby said he did not know Huth and would not have sex with a minor.
Cosby’s lawyers argued that Huth had stated in his first statements that he was 15 years old at the time of the incident, but that he had been conflicted by changing this detail weeks before the trial.
Lawyers claimed that Huth had offered his photo with Cosby to the newspapers.
On the other hand, the members of the jury were shown a video recording of Hugh Hefner, the founder of Playboy and a close friend of Cosby’s in the 70s, in 2016, saying that “it is quite extraordinary that those who come to the mansion are under the age of 18”.