Can I bring in my trademark application to your office?

Yes. You can hand deliver your application between 8:00 a.m. and 5:00 p.m., Eastern Time, Monday through Friday, except Federal holidays within the District of Columbia, to the following location:

Trademark Assistance Center
James Madison Building - East Wing
Concourse Level
600 Dulany Street
Alexandria, VA

USPTO FAQ - Questions and Answers (12JAN2005)