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Baker Hughes Seeks Re-Examination Of Drag- Reducing Polymer Patent

Mealey's (October 7, 2016, 9:56 AM EDT) -- ALEXANDRIA, Va. — A claimed method of introducing a drag-reducing polymer into a pipeline carrying a liquid hydrocarbon “was not new” and would have been obvious to one of ordinary skill in the art, Baker Hughes Incorporated asserts in an Oct. 6 petition for inter partes review by the Patent Trial and Appeal Board (Baker Hughes Incorporated v. Lubrizol Specialty Products Inc., No. IPR2016-01896, PTAB).

(Petition available.  Document #16-161017-006C.)

Moreover, various limitations added to U.S. patent No. 8,022,118 by patent owner Lubrizol Specialty Products Inc. that...
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