US Patent Issued to Regeneron Pharmaceuticals on Feb. 3 for "Probe and method for identifying host cell protein impurities" (Maryland, New York, Connecticut Inventors)

ALEXANDRIA, Va., Feb. 3 -- United States Patent no. 12,540,945, issued on Feb. 3, was assigned to Regeneron Pharmaceuticals Inc. (Tarrytown, N.Y.).

"Probe and method for identifying host cell protein impurities" was invented by Gaoyuan Liu (White Plains, N.Y.), Xiaojing Zheng (Gaithersburg, Md.) and Ning Li (New Canaan, Conn.).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention generally pertains to methods of detecting host cell proteins. In particular, the present invention pertains to the use of a novel activity-based protein profiling probe to identify host cell proteins with lipase activity in a pharmaceutical formulation."

The patent was filed on Aug. 26, 2022, under Application No. 17...