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

506

Total Number of petitions for Covered Business Method review filed as of February 24, 2017

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5938

Total Number of petitions for Inter Partes Review filed as of February 24, 2017

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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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Reexamination Pendency

Reexamination pendency is an important factor weighed by the courts when deciding whether to stay concurrent litigation.

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Reexamination News & Events

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Feb 9, 2017

PTO Litigation Report – February 9, 2017

Listed below are all new filings before the PTAB of petitions 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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Feb 8, 2017

PTO Litigation Report – February 8, 2017

Listed below are all new filings before the PTAB of petitions 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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Feb 7, 2017

PTO Litigation Report – February 7, 2017

Listed below are all new filings before the PTAB of petitions 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

Feb 6, 2017

PTO Litigation Report – February 6, 2017

Listed below are all new filings before the PTAB of petitions 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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Feb 3, 2017

PTO Litigation Report – February 3, 2017

Listed below are all new filings before the PTAB of petitions 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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Feb 2, 2017

PTO Litigation Report – February 2, 2017

Listed below are all new filings before the PTAB of petitions 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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Feb 1, 2017

PTO Litigation Report – February 1, 2017

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

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Jan 31, 2017

PTO Litigation Center Report – January 31, 2017

Listed below are all new filings before the PTAB of petitions 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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Jan 30, 2017

PTO Litigation Center Report – January 30, 2017

Listed below are all new filings before the PTAB of petitions 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

Jan 27, 2017

PTO Litigation Report – January 28, 2017

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

Learn More