Once filed, the requester cannot “unfile” the reexamination. Many pitfalls await the unwary. Learn More

How to institute a reexamination, common pitfalls, ex parte versus inter partes. Learn More

Most recent USPTO reexamination statistics regarding volume and timing from 2007-2010. Learn More

Concise definitions and discussions of important reexamination concepts and terminology. Learn More

View All Essentials

Hot Topics

Real Party in Interest

The real party in interest requirement is closely tied to the inter partes reexamination estoppel provisions.

Learn More

Executive Interviews

The Reexamination Center Executive Interview: Dr. Nancy J. Linck

The Reexamination Center interviews Nancy J. Linck, Ph.D. on a variety of post-grant challenge options at the PTO, including inter partes and ex partes reexamination and the new options introduced within the America Invents Act signed into law in September 2011.

Learn More

Quick Stat

923

Total number of inter partes requests filed from November 29, 1999.

Learn More

Reexamination News & Events

Subscribe

View All News & Events

May 8, 2012

Daily Reexamination Report – May 8, 2012

Below is the newest reexamination request filed with the United States Patent and Trademark Office as of May 8, 2012: two ex parte reexamination requests.

Learn More

May 7, 2012

Daily Reexamination Report – May 7, 2012

Below is the newest reexamination request filed with the United States Patent and Trademark Office as of May 7, 2012: one ex parte reexamination request.

Learn More

May 4, 2012

Daily Reexamination Report – May 4, 2012

Below is the newest reexamination request filed with the United States Patent and Trademark Office as of May 4, 2012: three ex parte reexamination requests and one inter partes reexamination request.

Learn More