Transocean Drill Patents Invalid: Norwegian Court
The Olso District Court ruled Thursday that Transocean’s patents covering a multi-activity offshore drilling apparatus and its method were invalid, Seadrill said.
Transocean, the world’s largest offshore drilling company, holds similar patents issued by patent authorities around the world, and has previously asserted its United States patents in infringement suits against other competitors in the U.S.
The Norwegian litigation began in 2005, when Transocean sent...
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