Office of Petitions

  • Office of Petitions (Patent)
    Local: 571-272-3282
    Fax: 571-273-0025
    Monday-Friday, 8:30 a.m to 5 p.m. ET

The Office of Petitions reviews and decides petitions, requests, and related inquiries, regarding the filing of patent applications, revival of abandoned applications, reinstatement of expired patents, withdrawal of patent applications from issue, small entity entitlement, review of previous decisions of the Technology Centers, suspension of regulations, and questions not specifically provided for by regulations. The Office of Petitions also manages the Inventor Assistance Center (IAC). THE IAC 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 procedure.


Office of Petitions


Announcements, Resource Materials, and FAQs

Please see Petitions for more information.


  • Petitions Help Desk

Phone Number:  571-272-3282

Hours of Operation for the Petitions Help Desk
Monday - Friday
8:30 AM - 5:00 PM (EDT)

  • Inventors Assistance Center (IAC)

Phone Numbers for IAC:   800-PTO-9199 (800-786-9199)  or 571-272-1000

TTY customers can dial 571-272-9950 for customer assistance.

Hours of Operation for the IAC
Monday - Friday
8:30 AM - 8:00 PM (EDT)