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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


United States Patent and Trademark Office
This page is owned by Patent Trial and Appeal Board.
Last Modified: 8/15/2014 3:24:24 PM