CHICAGO--(BUSINESS WIRE)--ICAP Ocean Tomo announced today it has been engaged to sell an intellectual property portfolio of 6 issued U.S. patents relating to DRM (Digital Rights Management) technology. Cited by industry giants Sony, Microsoft, and Hitachi, the assets support a wide range of business models such as content downloads, music subscription services, DVD digital copy, and DRM software tools. The patents disclose techniques and methods enabling enhanced protection of audio and video co
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