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

539

Total Number of petitions for Covered Business Method review filed as of January 19, 2018

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7386

Total Number of petitions for Inter Partes review filed as of January 19, 2018

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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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Jan 4, 2018

PTO Litigation Report – January 4, 2018

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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Jan 3, 2018

PTO Litigation Report – January 3, 2018

Listed below are all new filings before 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.

Learn More

Jan 2, 2018

PTO Litigation Report – January 2, 2018

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

Dec 29, 2017

PTO Litigation Report – December 29, 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

Dec 28, 2017

PTO Litigation Report – December 28, 2017

Listed below are all new filings before 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.

Learn More

Dec 27, 2017

PTO Litigation Report – December 27, 2017

Listed below are all new filings before 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.

Learn More

Dec 20, 2017

PTO Litigation Report – December 20, 2017

Listed below are all new filings before 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.

Learn More

Dec 19, 2017

PTO Litigation Report – December 19, 2017

Listed below are all new filings before 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.

Learn More

Dec 18, 2017

PTO Litigation Report – December 18, 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

Dec 15, 2017

PTO Litigation Report – December 15, 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