By Dan Levine SAN FRANCISCO (Reuters) - Intellectual Ventures is set to square off this week against Google Inc's Motorola Mobility unit in the first trial that the multibillion-dollar patent-buying firm has undertaken since it was founded. Privately-held Intellectual Ventures sued Motorola in 2011, claiming the mobile phone maker infringed patents covering a variety of smartphone-related technologies, including Google Play. Motorola has denied the allegations and will now go to trial over three of those patents. The trial takes place amid an unfolding debate in Congress over patent reform, in which Intellectual Ventures and Google are on opposite sides.



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