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Over 20% of Daubert Challenges Were Successful in 2015

February 10, 2016

Following up on our earlier analysis of the historical success rate of challenges to expert witness testimony, we have the results of over 8,500 challenges recorded during 2015.  Challenge outcomes are summarized into the following categories:

  • Testimony admitted
  • Testimony excluded or partially excluded
  • Testimony relied upon or given significant weight
  • Testimony not relied upon or given little weight
  • Unknown or not categorized


In summary, over 20% of recorded Daubert challenges were at least partially successful in 2015.  In addition, nearly 17% of cases resulted in testimony that was ignored or given little weight by the judge.  Our next blog post will compare the success rate of Daubert challenges in federal and state courts.



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