How does the Official Gazette distinguish between different types of reexamination certificates?
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.
The Official Gazette clearly indicates the type of certificate being issued. According to MPEP 2291: “The notice will clearly indicate the type of certificate, e.g., an ex parte reexamination certificate (for proceedings ordered under 35 U.S.C. 304), an inter partes reexamination certificate, a supplemental examination certificate, or an ex parte reexamination certificate from reexamination ordered under 35 U.S.C. 257.”
This distinction is important because it helps readers understand the specific type of reexamination process that led to the certificate’s issuance.