EFS Info - Confirmation Number

The Confirmation Number is a four digit number (e.g., 1234) and can be obtained by looking up the application number in the Public Patent Application Information Retrieval (PAIR) System located at http://portal.uspto.gov/external/portal/pair and viewing the Bibliographic Data. If the Confirmation Number is not available or not known, the Third-Party Submission cannot be filed electronically and may be filed in paper instead. Instructions on how to file a third-party submission in paper are available at the Preissuance Submissions Microsite.