How can USPTO staff access reexamination file data through OPSG?

This page is an FAQ based on guidance from the Manual of Patent Examining Procedure. It is provided as guidance, with links to the ground truth sources. This is information only: it is not legal advice.

USPTO staff can access reexamination file data through the One Patent Service Gateway (OPSG) system using the following steps, as outlined in MPEP 2235:

1. From the USPTO intranet site, click on “Patent Data Portal”
2. Click on “General Information”
3. Select “search by” patent number
4. Enter the patent number in the box
5. Click on “Search”
6. When the “Patent Number Information” appears, click on “Continuity Data” to obtain the reexamination number

This process allows USPTO staff to retrieve relevant data for reexamination files efficiently.