A federal judge has ruled that RealNetworks' RealDVD player violates the Digital Millennium Copyright Act and slapped a preliminary injunction on the company that bars it from selling the software in the U.S. RealNetworks had contended that its software merely allowed users to make backup copies of their DVDs, but the Motion Picture Association of America, which represents the major U.S. film studios, had argued that it also allowed users to make copies of DVDs they had rented. In a statement following the ruling by U.S. District Court Judge Marilyn Hall Patel, the MPAA reiterated its accusation that RealNetworks "was willing to break the law at the expense of those who create entertainment content." RealNetworks did not immediately indicate whether it plans to appeal, saying only that it is reviewing the decision to determine a future course of action.