Copies of official U.S. Patent and U.S. Trademark documents are available for sale from the Patent and Trademark Copy Fulfillment Branch. Request for copies must include payment and identification of the patent number(s) or trademark registration number(s) being requested. Requests should be made online at Certified Copy Center. Telephone, fax, email, mail and walk-in services are provided Monday through Friday 8:30 a.m. to 5 p.m. ET.