Clinton R. South, Ph.D.


Clinton South is an associate in the Intellectual Property Department and member of the Chemical and Pharmaceutical practice teams in Ballard Spahr’s Patents Group. Clint’s practice focuses on drafting and prosecuting domestic and foreign patent applications, opinion work, client counseling, intellectual property litigation, and proceedings at the USPTO—including post-grant and  inter partes review proceedings.

Prior to joining Ballard Spahr, Clint served as a law clerk in federal courts at the trial and appellate levels. As a law clerk in the Eastern District of Texas, Clint worked on numerous trials and other proceedings, including more than 40 claim construction (or Markman) hearings. At the Federal Circuit, Clint assisted with appeals in patent and other cases originating from federal district courts and administrative tribunals.

Clint’s graduate work focused on organic and polymer chemistry, including small-molecule synthesis and materials science.

Professional Highlights

Judicial Clerkships

Hon. Roy S. Payne, U.S. District Court for the Eastern District of Texas, 2016-2018

Hon. Jimmie V. Reyna, U.S. Court of Appeals for the Federal Circuit, 2014-2015

Professional Activities

Atlanta IP Inn of Court, Member



University of Virginia School of Law (J.D. 2014)
Virginia Law Review, Editorial Board (2012-2014)
Dillard Legal Writing Fellow

Georgia Institute of Technology (Ph.D., chemistry, 2008)
American Chemical Society Division of Organic Chemistry Fellow

University of North Alabama (B.S., summa cum laude, 2004)




Washington, D.C.

U.S. Patent and Trademark Office

U.S. Court of Appeals for the Federal Circuit

U.S. Court of Appeals for the Eleventh Circuit

U.S. District Court for the Northern District of Georgia

U.S. District Courts for the Northern, Middle, and Southern Districts of Alabama