Office | Contact information | When to contact |
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| USPTO Customer Support Centers For general patent information, Inventors Assistance Center, mailing addresses, Internet addresses, and contact information for other USPTO services. | Toll-Free: 800-786-9199 Local: 571-272-1000 TTY: 800-877-8339 |
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| Patent Electronic Business Center Customer support for electronic filing access. Customer Numbers and digital (PKI) certificate issuance and maintenance | Toll-Free: 866-217-9197 Local: 571-272-4100 ebc@uspto.gov |
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| Scientific and Technical Information Center Offers scientific and technical books and periodicals to the public with an extensive collection of foreign patents. Open to the public by appointment only. | Local: 571-272-2520 571-272-3547 |
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| Sequence Help Desk Assists with questions regarding compliance with 37 CFR 1.821-1.825 (sequence rules) or use of PatentIn or Checker software programs. | Local: 571-272-2510 SequenceHelpDesk@uspto.gov |
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| Public Search Facility Provides public access to patent and trademark information in a variety of formats including on-line, microfilm, and print. Trained staff are available to assist public users. | Local: 571-272-3275 |
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| International Patent Legal Administration (PCT Help Desk) Assistance with applications filed under the Patent Cooperation Treaty. | Local: 571-272-4300 |
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| Office of Patent Legal Administration Rule changes, PG Pubs, Patent Term Adjustment & Extension. | Local: General: 571-272-7701 PTA: 571-272-7702 Reexamination: 571-272-7703 AIA and special projects: 571-272-7704 |
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| Office of Petitions Reviews and decides petitions, requests, and related inquiries, regarding the filing of patent applications | Local: 571-272-3282 |
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| Inventor’s Assistance Center Provides patent information and services to the public. The IAC is staffed by former Supervisory Patent Examiners and experienced Primary Examiners who answer general questions concerning patent examining policy and procedures. | Toll-Free: 800-786-9199 Local: 571-272-1000 TTY: 800-877-8339 |
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| America Invents Act Contact Center For questions regarding the America Invents Act, including the new legal provisions and rules | Toll-Free: 855-HELP-AIA 855-435-7242 Local: 571-272-0300 HELPAIA@uspto.gov |
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| Application Assistance Unit Status inquiries regarding newly filed and allowed patent applications; and questions about Pre-Grant Publication or 18-month Publication | Toll-Free: 888-786-0101 Local: 571-272-4200 571-272-4000 HelpAAU@uspto.gov |
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| Assignments Recordation Branch For help with following a new assignment or obtaining information on a pending assignment, questions on assignments, liens on patents, filing assignments, recordation forms, and trademark assignments | Local: 571-272-3350 AssignmentCenter@uspto.gov |
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| Office of Stakeholder Outreach and Patents Ombudsman When there is a breakdown in the normal application process, including before and after prosecution, the Office of Stakeholder Outreach and Patents Ombudsman can assist in getting the application back on track | Toll-Free: 855-559-8589 Local: 571-272-5555 Hours of operation: M-F, 8:30 a.m.-5:00 p.m. ET Contact Form: Ombudsman |
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| Patent and Trademark Copy Fulfillment Branch Copies of official U.S. Patent and U.S. Trademark documents are available for sale | Toll-Free: 800-972-6382 Local: 571-272-3150 Fax: 571-273-3250 dsd@uspto.gov |
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| Receipts Accounting Division (RAD) For information on fee payments, including maintenance fees, deposit accounts, and refunds | Local: 571-272-6500 |
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| Central Fax For transmitting by facsimile patent related correspondence. Please see 37 CFR 1.6(d) for an identification of correspondence that the USPTO does not permit to be transmitted | Fax: 571-273-8300 |
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| USPTO Contact Phone numbers, email addresses, and other contact information for USPTO offices and business centers | USPTO Contacts |
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