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

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Hot Topics

Litigation Stays

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

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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.

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Quick Stat

92%

Percentage of ex parte requests that are granted substantive reexamination by the CRU.

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Reexamination News & Events

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Jan 30, 2012

Daily Reexamination Report – January 26, 2012

Below is the newest reexamination request filed with the United States Patent and Trademark Office as of January 26, 2012: five ex parte reexamination requests and two inter partes reexamination requests.

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Jan 25, 2012

Daily Reexamination Report – January 24, 2012

Below is the newest reexamination request filed with the United States Patent and Trademark Office as of January 24, 2012: one ex parte reexamination request. Also included are the most recent reexamination certificates issued by the USPTO.

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Jan 25, 2012

Daily Reexamination Report – January 23, 2012

Below is the newest reexamination request filed with the United States Patent and Trademark Office as of January 23, 2012: four ex parte reexamination requests and one inter partes reexamination request.

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