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

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Quick Stat

319

Total Number of requests for Covered Business Method patent review filed as of April 24, 2015

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2810

Total number of requests for Inter Partes Review filed as of April 24, 2015

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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.

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Hot Topics

Substantial New Questions of Patentability

Fundamental to every reexamination request is the substantial new question of patentability or the SNQ.

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Reexamination News & Events

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Apr 24, 2015

PTO Litigation Center Report – April 24, 2015

Listed below are all new filings before PTAB of requests for inter partes review (IPR) and covered business methods review (CBM).  Also listed are any newly-posted requests for ex parte reexamination at the USPTO.

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Apr 23, 2015

PTO Litigation Center Report – April 23, 2015

Listed below are all new filings before PTAB of requests for inter partes review (IPR) and covered business methods review (CBM).  Also listed are any newly-posted requests for ex parte reexamination at the USPTO.

Learn More

Apr 22, 2015

PTO Litigation Center Report – April 22, 2015

Listed below are all new filings before PTAB of requests for inter partes review (IPR) and covered business methods review (CBM).  Also listed are any newly-posted requests for ex parte reexamination at the USPTO.

Learn More

Apr 21, 2015

PTO Litigation Center Report – April 21, 2015

Listed below are all new filings before PTAB of requests for inter partes review (IPR) and covered business methods review (CBM).  Since the last report, no new requests for ex parte reexamination at the USPTO have been posted.

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Apr 20, 2015

PTO Litigation Center Report – April 20, 2015

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Apr 17, 2015

PTO Litigation Center Report – April 17, 2015

Listed below are all new filings before PTAB of requests for inter partes review (IPR) and covered business methods review (CBM).  Also listed are any newly-posted requests for ex parte reexamination at the USPTO.

Learn More

Apr 16, 2015

PTO Litigation Center Report – April 16, 2015

Listed below are all new filings before PTAB of requests for inter partes review (IPR) and covered business methods review (CBM).  Also listed are any newly-posted requests for ex parte reexamination at the USPTO.

Learn More

Apr 15, 2015

PTO Litigation Center Report – April 15, 2015

Listed below are all new filings before PTAB of requests for inter partes review (IPR) and covered business methods review (CBM).  Also listed are any newly-posted requests for ex parte reexamination at the USPTO.

Learn More

Apr 14, 2015

PTO Litigation Center Report – April 14, 2015

Listed below are all new filings before PTAB of requests for inter partes review (IPR) and covered business methods review (CBM).  Since the last report, no new requests for ex parte reexamination at the USPTO have been posted.

Learn More

Apr 13, 2015

PTO Litigation Center Report – April 13, 2015

Listed below are all new filings before PTAB of requests for inter partes review (IPR) and covered business methods review (CBM).  Also listed are any newly-posted requests for ex parte reexamination at the USPTO.

Learn More