The Patent Cooperation Treaty (PCT) is an international agreement among intellectual property offices and intergovernmental authorities regarding the process of international patent applications. Please contact the PCT Helpdesk at 571-272-4300 (local) for questions and information concerning the PCT and filing a PCT application. Assistance is available Monday through Friday (except federal holidays) from 8:30 a.m. to 5 p.m. ET.
Additionally, any general PCT related inquires which are NOT case-specific or time-sensitive may be emailed to PCTHelp@uspto.gov. This email address has been established on a one-year pilot basis effective January 1, 2022. See Establishment of a USPTO Email Box for Submitting General Questions Related to the Patent Cooperation Treaty and Applications Filed or Submitted Thereunder, 1493 OG 212 (December 7, 2021).