Nicholas J. Ronaldson of Mayer Brown has entered an appearance for Beijing JJC Petroleum Equipment Co. in a pending patent infringement lawsuit. The action, which asserts a patent related to a washpipe for oil and gas drilling equipment, was filed Dec. 6 in Illinois Northern District Court by Husch Blackwell on behalf of Deublin Company. The case, assigned to U.S. District Judge Matthew F. Kennelly, is 1:23-cv-16544, Deublin Company, LLC et al.
Energy
January 20, 2024, 4:33 PM