Professional Experience

H. Sanders Gwin, Jr. is a Principal of Shumaker & Sieffert.  Sanders specializes in patent preparation/prosecution and patent infringement/validity counseling in the chemical, materials and software fields.  Previously, Sanders was a Principal of Fish & Richardson P.C., Intellectual Property Counsel with 3M, Associate with Darby & Darby, Intellectual Property Attorney with Allied Signal, and Associate with Sughrue. Sanders also served as a Judicial Clerk to The Honorable Edward S. Smith, United States Court of Appeals for the Federal Circuit.