Are my filing fees refundable if my patent application is not approved?
No, filing fees are not refundable. The filing fee is not for a patent, but is a statutorily prescribed payment to the U.S. Patent and Trademark Office for services rendered in processing a complete application. This statutory fee is due upon filing of the application. 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 5:00 p.m. Eastern Time.