For general questions please call 1-800-786-9199. For specific matters, refer to the area of inquiry below.
Have you received a misleading notice in the mail to renew your trademark or patent? These may be sent from third parties with names like "Patent and Trademark Bureau" or "Patent and Trademark Office" or similar. These entities are not affiliated with the USPTO. Please see our Caution: misleading notices page (trademarks) or Non-USPTO solicitations page (patents).
Phone numbers, email addresses, and other contact information for USPTO offices and business centers
The Patent Cooperation Treaty (PCT) is an international agreement among IP offices and intergovernmental authorities regarding the process of international patent applications. Contact the PCT Helpdesk for assistance.
PTAB includes statutory members and Administrative Patent Judges. It is charged with rendering decisions on appeals from adverse examiner decisions, post-issuance challenges to patents, and interferences.
TTAB hears and decides adversary proceedings involving oppositions, petitions, and proceedings involving applications for trademark registrations. The Board also decides appeals taken from the examining attorneys' refusals.