Software maker Adobe is being sued for alleged patent violations in its Acrobat publishing software. According to a quarterly report the company filed with the Securities and Exchange Commission, Adobe was sued on June 2 in U.S. District Court for Colorado by Information Technology Innovation. CNET reports that the suit alleges that Adobe’s Acrobat products infringe on the company’s patent, originally assigned to Colorado firm MarketScape, for a “method of extracting network information.”