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.

PTAB E2E (for IPR, CBM, PGR) and PRPS (for Derivations) are the PTAB's e-filing and case management system.

A link to PTAB E2E, external user guides, PTAB-E2E-related FAQs are located at PTAB E2E.

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