Oil Rig Makers Can't Duck Suit By Nixing Exhaust Patent

Law360, New York (May 24, 2013, 8:38 PM EDT) -- A Texas federal judge on Thursday affirmed the validity of an L.C. Eldridge Sales Co. Inc. patent for an oil-rig exhaust system, shooting down arguments that the patent was indefinite made by several rig manufacturers and owners that Eldridge has sued for infringement.

U.S. District Judge Michael Schneider rejected the claims by shipbuilder Jurong Shipyard Pte. Ltd. and engineering firm Azen Manufacturing Pte. Ltd., both based in Singapore, as well as several rig owners. The manufacturers and operators had attacked some of the language in Houston-based...
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