Contact Patents
| Office | Toll-free Number | Local Number |
| USPTO Customer Support Centers -- For general patent information, Inventors Assistance Center, mailing addresses, Internet addresses, and contact information for other USPTO services. | 1-800-786-9199 | 571-272-1000 571-272-9950 (TTY) |
| 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 by facsimile. | 571-273-8300 (FAX) | |
| Electronic Business Center -- Customer support for electronic filing and PAIR access. Customer Numbers and digital (PKI) certificate issuance and maintenance | 1-866-217-9197 | 571-272-4100 |
| Office of the Commissioner for Patents -- Responsible for all patent-examining functions in the Technology Centers and all operational aspects of patent application processing | 571-272-8800 | |
| Office of Data Management -- Status inquires regarding newly filed and allowed patent applications; and questions about Pre-Grant Publication or 18-month Publication | 1-888-786-0101 | 571-272-4200 |
| Office of Patent Classification -- Maintains the U.S. Patent Classification system | 571-272-7850 | |
| Office of Patent Cooperation Treaty Legal Administration (PCT Help Desk) -- Assistance with applications filed under the Patent Cooperation Treaty | 571-272-4300 | |
| Office of Patent Legal Administration -- Rule changes, PG Pubs, Patent Term Adjustment & Extension | 571-272-7701 | |
| Office of Petitions -- Reviews and decides petitions, requests, and related inquiries, regarding the filing of patent applications | 571-272-3282 | |
| Ombudsman Program -- When there is a breakdown in the normal application process, including before and after prosecution, the Patents Ombudsman Program can assist in getting the application back on track | Use contact form found on the Ombudsman page | |
| Scientific and Technical Information Center -- Extensive collections of foreign patents, Non-Patent literature and intellectual property law. Open to the public. | 571-272-3547 | |
| 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. | 571-272-3275 |
Technology Centers
| Technology Center | Local Number |
| 1600 - Biotechnology and Organic Chemistry | 571-272-1600 |
| 1700 - Chemical and Materials Engineering | 571-272-1700 |
| 2100 - Computer Architecture and Software | 571-272-2100 |
| 2400 - Networking, Multiplexing, Cable, and Security | 571-272-2400 |
| 2600 - Communications | 571-272-2600 |
| 2800 - Semiconductors, Electrical and Optical Systems and Components | 571-272-2800 |
| 2900 - Designs | 571-272-1200 |
| 3600 - Transportation, Construction, Electronic Commerce, Agriculture, National Security, and License & Review | 571-272-3600 |
| 3700 - Mechanical Engineering, Manufacturing and Medical Devices/Processes | 571-272-3700 |
