Jason Patric's ex-girlfriend has filed legal papers in a bid to stop the actor talking publicly about their high-profile custody battle. The Speed 2: Cruise Control star has spent the last few years locked in a dispute with his former partner Danielle Schreiber over access to their four-year-old son Gus, who was conceived by artificial insemination using the actor's sperm. He has been fighting for the chance to spend time with his son following the couple's split as U.S. law only recognises him as a sperm donor with no paternity rights. Patric even launched a high-profile campaign in a bid to alter the legislation, which was backed by stars including Ben Affleck, Matt Damon and Mel Gibson. However, Schreiber has now moved to silence her ex-boyfriend by filing a request for a restraining order to forbid Patric from speaking about their son in public or private without her permission, according to People.com. A hearing into the matter has been set for 17 April (14). Last year (13), Schreiber was granted a restraining order which banned the actor from contacting her.