TXED drives 33% drop in US patent litigation in third quarter

Managing IP is part of Legal Benchmarking Limited, 1-2 Paris Gardens, London, SE1 8ND

Copyright © Legal Benchmarking Limited and its affiliated companies 2026

Accessibility | Terms of Use | Privacy Policy | Modern Slavery Statement

TXED drives 33% drop in US patent litigation in third quarter

Patent litigation in the US district courts fell in the third quarter, an analysis by Lex Machina has revealed. PTAB filing and copyright litigation also fell, while trade mark litigation was up slightly

Only 1,119 US district court patent cases were filed in the second quarter, down 33% from the record 1,665 cases in the second quarter, an analysis by Lex Machina has revealed.  

Patent case filings so far this year are still up on the same period in 2014, but down on that in 2013. The third quarter drop was driven by the Eastern District of Texas, which had 435 cases – a 50% fall from its record peak in the second quarter of 839 cases.

Patent case filings in the District of Delaware increased in the third quarter by 38%, up to 138 from 100 in the second quarter. This is the first quarterly increase for the district since early 2013.

Petitions to the Patent Trial and Appeal Board were also down in the third quarter.

Inter partes review petitions filed fell to 418 from 466 in the second quarter. Lex Machina noted this decrease is “firmly within the established trend going back to mid 2014”.

Covered business method review petitions fell 50% to 20 in the third quarter. Roughly 40 CBMs have been filed a month in the long term.

Lex Machina patent litigation Q3
  Source: Lex Machina


Trade mark and copyright

The third quarter continued a trend of trade mark litigation in the US district courts being steady in 2015. The quarter had 875 trademark cases filed, compared to 831 in the second quarter and 877 in the first quarter.

Lex Machina divides copyright litigation in the US district courts into two sub-types:  file sharing cases and more traditional cases.

Case filings for traditional copyright cases fell slightly in the third quarter to 563 cases – a 1.4% decrease the 571 cases filed in the second quarter. Lex Machina reported the past few years of copyright case filings has been “quite consistent”, with generally between 500 and 600 cases a quarter. 

In contrast, new file sharing cases have dropped much more sharply. The 627 cases in the third quarter were a 21% drop from the 797 in the second quarter. File sharing cases remain a majority of copyright cases filed, but this marks the second quarter of decrease in file sharing cases from their peak of 904 cases in the first quarter of 2015.

 

more from across site and SHARED ros bottom lb

More from across our site

Erise IP has added a seven-practitioner trademark team from Hovey Williams, signalling its intention to help clients at all stages of development
News of prison sentences for ex-Samsung executives for trade secrets violation and an opposition filed by Taylor Swift were also among the top talking points
A multijurisdictional claim filed by InterDigital and a new spin-off firm in Germany were also among the top talking points
Duarte Lima, MD of Spruson & Ferguson’s Asia practice, says practitioners must adapt to process changes within IP systems, as well as be mindful of the implications of tech on their practices
Practitioners say the UK Supreme Court’s decision could boost the attractiveness of the UK for AI companies
New awards, including US ‘Firm of the Year’ and Latin America ‘Firm to Watch’, are among more than 90 prizes that will recognise firms and practitioners
DWF helped client Dairy UK secure a major victory at the UK Supreme Court
Hepworth Browne led Emotional Perception AI to victory at the UK Supreme Court, which rejected a previous appellate decision that said an AI network was not patentable
James Hill, general counsel at Norwich City FC, reveals how he balances fan engagement with brand enforcement, and when he calls on IP firms for advice
In the second of a two-part article, Gabrielle Faure-André and Stéphanie Garçon at Santarelli unpick EPO, UPC and French case law to assess the importance of clinical development timelines in inventive step analyses
Gift this article