By Naomi Tajitsu WELLINGTON (Reuters) – Internet entrepreneur Kim Dotcom on Friday suffered another blow to his fight against extradition to the United States to face online piracy charges after New Zealands highest court rejected his appeal to access evidence to be presented at the hearing. The Supreme Court ruled that U.S. prosecutors were not required to disclose evidence at a hearing set for July to extradite Dotcom, the founder of online file sharing site Megaupload, and his three colleagues to the United States, where they are also charged with mass copyright infringement, money laundering and racketeering. Washington charges that the Megaupload website, which was shut down in 2012, cost film studios and record companies more than $500 million and generated more than $175 million in criminal proceeds by letting users store and share copyrighted material, such as movies and TV shows. If Dotcom, a German national with New Zealand residency, is extradited, the ensuing copyright case could set a precedent for internet liability laws, potentially tightening regulations on disseminating copyrighted material on the Internet.