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Welcome to Electronic Patent Filing for UNREGISTERED eFILERS
A submission has not been filed officially at the USPTO until the e-filer executes the Submit function and the documents are received at the USPTO Eastern Time. The Acknowledgement Receipt is evidence of this submission.
All items denoted by * are required.

The USPTO is retiring EFS-Web and Private PAIR, effective November 8, 2023. Please use Patent Center to file and manage your applications and requests. Visit the EFS-Web and Private PAIR Retirement and Patent Center information pages for more information.

IMPORTANT: Please read the Legal Framework for using EFS-Web.  For information on the Paperwork Reduction Act as it pertains to: ePetitions, third party submissions under 37 CFR 1.290, Web-based application data sheets, and citations of prior art and written statements under 37 CFR 1.501, please see the OMB Clearance and PRA Burden Statement page.

*Main Functions

(This includes new filings of continuation, divisional, continuation-in-part and reissue applications, as well as reexamination and supplemental examination proceedings. A request for continued examination (RCE) and continued prosecution application (CPA) are considered existing documents and must be filed as a registered eFiler.)

Existing Application

Privacy Policy [new window]
If you close or exit the eFiling portal you will lose your work.
For your convenience, all links in the left hand side of the eFiling portal will open in new windows to help prevent accidental loss of information during filing.
Context-sensitive help (information graphic information links) will appear in a new window.

Why you should consider becoming a REGISTERED eFILER

  • What is a REGISTERED eFILER?

A Registered eFILER has both an assigned Customer Number and Digital Certificate for secure access to application documents both during and after the filing of a patent application.

  • Digital Certificates provide an e-Filer with the abillity to authenticate sessions by requiring positive identification of a customer using Public Key Infrastructure technologies.
  • Holders of Digital Certificates can take advantage of streamlined logins.
  • Registered e-Filers who authenticate can save "in-progress" submissions and return to edit them prior to completing filing.
  • This ability to save "in-progress" submissions provides added protection against loss of data in the event of a localized internet or office equipment failure or in the event of an unplanned system outage during an online filing session.
  • Registered e-Filers can electronically process subsequent actions on electronically filed cases without delay.
  • Registered e-Filers can review their confidential Private PAIR records for most of their electronically filed cases.

YES! I want to become a REGISTERED eFILER - Tell me how to obtain a Customer Number and register for a Digital Certificate now.

If you need help:
  • To ask questions about Patent e-Filing, or to suggest improvements to the online system, or report technical problems, please call the Patent Electronic Business Center at (866) 217-9197 (toll free) or send email to EBC@uspto.gov.
  • Send general questions about USPTO programs to the USPTO Contact Center (UCC) .
  • For general questions regarding a petition, or requirements for filing a petition, contact the Office of Petitions Help Desk at 1 800-786-9199.