How do I check on the status of my pending patent application?
The U.S. Patent and Trademark Office (USPTO) is pleased to present PAIR - Patent Application Information Retrieval System. PAIR has a private site that provides a USPTO/Internet infrastructure capability to securely provide patent application status information to USPTO customers with a customer number associated with the correspondence address for their application and the appropriate software tools. Contact the Patent Electronic Business Center (PEBC) at (571) 272-4100 to learn more about the tools necessary to access private PAIR.
PAIR also has a public side to provide the same information to the public once an application has issued as a patent or published as a patent application publication. Once you receive a patent filing receipt containing the application number of your application, you may check on the status of a pending application once you obtain the appropriate tools.
To find out information on PAIR, visit the PEBC website at: http://www.uspto.gov/ebc/newusers.html. You may also call the examiner assigned to your patent application, and if this information is not known, you may call the File Information Unit at (703) 308-2733. For additional information, you may contact the USPTO Contact Center (UCC) and request to be transferred to the Inventors Assistance Center (IAC). IAC representatives are available Monday through Friday (except federal holidays) from 8:30 a.m. to 5:30 p.m. Eastern Time.