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Trials (PTAB)

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TrialsThis page includes information about proceedings conducted by the Patent Trial and Appeal Board, including inter partes review, post-grant review, the transitional post-grant review for covered business method patents, derivations, and interferences.

PRPS is the PTAB's e-filing and case management system.  A link to PRPS, relevant notices, a Quick Start Guide, technical notes, and PRPS-related FAQs are located here.

            A chart listing differences in petitioner, estoppel, standard, and basis for 
            Inter Partes Review, Post Grant Review, and Covered Business Methods.

trial proceeding timeline

NOTE:  Some material listed on this page may require a plug-in or viewer, available here.


United States Patent and Trademark Office
This page is owned by Patent Trial and Appeal Board.
Last Modified: 12/1/2014 12:01:15 PM