Correspondence: | Brian J. Winterfeldt Ballard Spahr Andrews & Ingersoll, LLP 601 13th Street, N.W., Suite 1000S Washington, DC 20005 UNITED STATES bwinterfeldt@steptoe.com,gmcnutt@steptoe.com,khemmerdinger@steptoe.com,ipdocketing@steptoe.com Phone: 202.661.7650 |