Prior to taking one of the top positions at the USPTO as Deputy Under Secretary of Commerce for Intellectual Property and Deputy Director of the USPTO, Sharon Barner was in private practice in Chicago. She has argued at least once before the United States Court of Appeals for the Federal Circuit.
You can listen to her argument before the Federal Circuit in Automed Technologies v. Microfil, LLC, 2006-1620 (Fed. Cir. Jul. 16, 2007) here: [Listen].
You can read the court’s opinion in that case here: [Read].