Giuffre has accused Dershowitz, the high-profile attorney who was part of the legal team that negotiated Epstein's 2007 plea deal, of sexually abusing her.
Dershowitz has denied her claims and accused her of fabricating the allegations against him. He said in a statement that Friday's release of documents "categorically proves that Virginia Roberts (Giuffre) never had sex with me."
In April, she filed a separate defamation lawsuit against him, saying that he made "false and malicious" statements about her when he accused her of lying in making her accusations against him.
That case is ongoing, and Dershowitz has filed a motion to dismiss.