Transocean's Offshore Drilling Patents Invalid: Judge

By Leigh Kamping-Carder (July 29, 2009, 6:52 PM EDT) -- A federal court has ruled in favor of defendant Maersk Contractors USA Inc. in patent litigation with Transocean Inc., finding that dual-activity offshore drilling technology patented by Transocean is the result of years of progress in the industry and not, as the company claims, its own invention....

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