A service interruption in United States Postal Service (USPS) in California occured on June 29, 1995 and will be in effect until further notice.
See the emergency order for further details. A suggested certification for using the emergency order is also available. Please note that some alternate services will only deliver to a street address. In such event, the address to use for patent related mail is as follows:
Patent and Trademark Office Correspondence and Mail Division Crystal Plaza Building 2, Room 1A03 2011 South Clark Place Arlington, VA 22202
In the event a telephone number is required, use (703) 308-1202.