FQA application forms accompanied by checks or money orders for the required fees may be submitted by private courier or delivery service, though use of such methods is not encouraged. If used, however, submissions must be sent to the Trademark Assistance Center (TAC) at the USPTO’s headquarters at the following address:
Trademark Assistance Center
Madison East, Concourse Level Room C 55
600 Dulany Street
Alexandria, VA 22314
Private couriers and delivery services cannot deliver to the US Postal Service mailing address provided on the application instructions.