Text of US Postal Service Notice:

"An error in the Government Mails section of the Washington DC Post Office resulted in mail addressed to the U. S. Patent and Trademarks Office, Washington DC 20231 being returned to sender on July 30 and 31st. Anyone receiving mail returned to sender endorsed "Forwarding Order Expired" or "Not Deliverable as Addressed Unable to Forward" should obliterate that endorsement and return the mailpiece to the mailstream. Questions can be referred to Cynthia McMullen, Manager, Government Mails, 900 Brentwood Rd NE, Washington DC 20066-9704 (202-636-1278) internet address CMCMULL2@email.USPS.GOV"