The America Invents Act has ushered in a variety of new ways to challenge patents at the U.S. Patent and Trademark Office. Learn More

Learn about inter partes review (IPR), covered business method review (CBM), post-grant review (PGR), reexaminations, derivation proceedings, and interferences. Learn More

Most recent patent office litigation statistics regarding volume and timing from the USPTO from 2007-2013. Learn More

Concise definitions and discussions of important patent office litigation concepts and terminology. Learn More

View All Essentials

Quick Stat


Total Number of requests for Covered Business Method patent review filed as of October 1, 2014

Learn More


Total number of requests for Inter Partes Review filed as of October 1, 2014

Learn More

Featured News

Patent Office Litigation - Order Your Copy Today

A key publication for patent owners, litigators, and IP professionals operating in today’s global economy, Patent Office Litigation is a two-volume set focused on the new contested proceedings under the America Invents Act. This book examines how the proceedings interact with other aspects of patent procurement and enforcement, and delivers practical analysis and advice. To order your copy of Patent Office Litigation today, click here.

Learn More

Hot Topics

Litigation Stays

Judge Selna in the Central District of California has authored a number of nuanced stay decisions.

Learn More

Reexamination News & Events


View All News & Events