Goins, who has been the focal point of a criminal probe of The Cosby Show star, says that during an Aug. 9, 2008 run-in at the Playboy Mansion, Cosby handed her a drink, which she sipped and then lost consciousness.
Goins said that when she woke up, the comic had his mouth on her toes while he was touching himself, abruptly leaving when she expressed her discomfort with his creepy actions.
Goins' suit will be formally announced by lawyer Spencer Kuvin in a news conference slated to be held at Los Angeles Police Dept. Headquarters Tuesday afternoon.
As RadarOnline.com previously reported, Cosby's attorney Martin Singer has denied the incident took place, saying Cosby was on the East Coast at the time of the alleged incident. Cosby's camp has provided detailed evidence to officials that he was out-of-town on the day in question, Deadline.com reported.
Cosby also faces more court time in the case of Judith Huth, a woman who says the comic sexually abused her in a 1974 incident that also took place at the Playboy Mansion, when she was just 15-years-old.
Cosby has not been charged with any crimes in connection with the accusations from more than 50 women.