USPTO PCT Helpdesk
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.
- Task
- Contact the USPTO
- Patent or trademark
- patent
- Legacy system
- —
- Current entry point
- uspto.gov/learning-and-resources/support-centers/patent-cooperation-treaty-pct-helpdesk (verified 2026-09-23)
- Legacy system and where it moved
- No legacy system name mentioned on the page (verified 2026-09-23)
- Fee
- No fee statement on the page (verified 2026-09-23)
- What you need (account or API key)
- Inquiries by phone or email (page text, verified 2026-09-23)
- Phone
- 571-272-4300
- PCTHelp@uspto.gov
- Hours
- Monday through Friday (except federal holidays), 8:30 a.m. to 5 p.m.
- Source
- USPTO support centers (9 individual contact centers)(retrieved 2026-10-06)
Everything in the same category
Contact the USPTO (all 225) · patent (all 1090)
Related entry points
- USPTO Patents Ombuds Office
- Notice Regarding the Elimination of the Fee for Petitions To Make Special Filed Under the Patent Prosecution Highway (PPH) Programs
- January 2004 Revision of Patent Cooperation Treaty Application Procedure
- January 2004 Revision of Patent Cooperation Treaty Application Procedure
- USPTO Application Assistance Unit (AAU)
- USPTO Pro Se Assistance Center
- Revision of Search and Examination Fees for Patent Cooperation Treaty Applications Entering the National Stage in the United States
- Revision of Search and Examination Fees for Patent Cooperation Treaty Applications Entering the National Stage in the United States
- Changes To Facilitate Applicant's Authorization of Access to Unpublished U.S. Patent Applications by Foreign Intellectual Property Offices
- SB/64PCT Petition for Revival of an International Application for Patent Designating the U.S. Abandoned Unintentionally Under 37 CFR 1.137(a)
- Setting and Adjusting Patent Fees; Correction
- Revisions to Patent Term Adjustment
- Revisions To Implement the Patent Term Adjustment Provisions of the Leahy-Smith America Invents Act Technical Corrections Act
- Use of WIPO's ePCT System for Preparing the PCT Request for Filing as Part of an International Application With the USPTO as Receiving Office
- Reducing Patent Fees for Small Entities and Micro Entities Under the Unleashing American Innovators Act of 2022; Correction
- The Path to a Patent, Part VI: Pursuing patent protection abroad