Contact Patents
| Office | Toll-free Number | Local Number |
| USPTO Customer Support Centers | 1-800-786-9199 | 571-272-1000 571-272-9950 (TTY) |
| Electronic Business Center | 1-866-217-9197 | 571-272-4100 |
| Office of the Commissioner for Patents | 571-272-8800 | |
| Office of Data Management | 1-888-786-0101 | 571-272-4200 |
| Office of Patent Classification | 571-272-7850 | |
| Office of Patent Cooperation Treaty Legal Administration (PCT Help Desk) | 571-272-4300 | |
| Office of Patent Legal Administration | 571-272-7701 | |
| Office of Petitions | 571-272-3282 | |
| Scientific and Technical Information Center | 571-272-3547 | |
| Public Search Facility | 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 |
