What is the One Patent Service Gateway (OPSG) system?
The One Patent Service Gateway (OPSG) system is a tool used by the USPTO to support the reexamination process. As stated in MPEP 2235:
“The One Patent Service Gateway (OPSG) system is used to support the reexamination process.“
This system allows USPTO staff to access and manage data related to reexamination files, including retrieval of patent information, continuity data, and monitoring of major events in reexamination proceedings.
To learn more:
Topics:
MPEP 2200 - Citation Of Prior Art And Ex Parte Reexamination Of Patents,
MPEP 2235 - Record Systems,
Patent Law,
Patent Procedure