The Trademark Assistance Center (TAC) provides general information about the trademark registration process and responds to inquiries about the status of trademark applications and registrations. The location of the Trademark Assistance Center is Madison East, Concourse Level, 600 Dulany Street, Alexandria, VA 22314. Telephone assistance is available Monday through Friday (except federal holidays) from 8:30 a.m. to 8 p.m. ET. Walk-in assistance is available Monday through Friday (except federal holidays) from 8:30 a.m. to 5 p.m. ET
You can also check the status of an application or registration through Trademark Applications and Registrations Retrieval ("TARR") database at http://tarr.uspto.gov/.
800-786-9199 (toll-free) | 571-272-9250 (local)