According to a court filing, the Justice Department filed an appeal challenging its loss in the AT&T-Time Warner antitrust trial on Thursday, July 12. AT&T completed its $85 billion acquisition of Time Warner a few weeks ago after a federal judge rejected the Justice Department’s argument that the deal would be anti-competitive. AT&T is one of the country’s biggest telecom providers and its purchase of Time Warner allowed it to pick up some of the biggest media brands in the U.S., including HBO and CNN. AT&T said in a statement Thursday that the U.S. District Judge Richard Leon correctly decided the case.