Gavel iconThis 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.

PTAB trial proceeding timeline