In a significant decision for plaintiffs litigating traumatic brain injury (TBI) claims, the U.S. District Court for the Northern District of Oklahoma has denied a defense motion to exclude expert testimony based on diffusion...more
The district court erred by admitting untimely expert testimony on noninfringement and by refusing to grant a new trial after the jury found noninfringement. Trudell Medical International (“Trudell”) sued D R Burton...more
Class certification decisions under Rule 23 of the Federal Rules of Civil Procedure mark a critical stage in any putative class action lawsuit. Rule 23(a) requires plaintiffs to prove, among other things, that “there are...more
Federal Rule of Civil Procedure 26(a)(2) requires parties to disclose the opinions of experts who may present evidence at trial. If the disclosures are inadequate, Rule 37(c) requires exclusion of the opinions “unless the...more
Federal Rules of Evidence 701 and 702 govern the admissibility of lay and expert opinion testimony, respectively, in federal courts. Rule 701(c) helps paint the line between the two, providing that an opinion “based on...more
In December 2023, back when the ink was still drying on the amendments to Federal Rule of Evidence 702, the Southern District of New York excluded all five general causation experts proffered by plaintiffs in the In re...more
When tasked with assessing the admissibility of expert testimony under Federal Rule of Evidence 702, courts often cite the so-called Daubert factors as criteria that guide the inquiry. Among those factors is “whether the...more
In explaining the December 2023 amendments to Federal Rule of Evidence 702, the Advisory Committee called out several ways in which “many courts” had “incorrectly” applied Rule 702 and failed to adequately discharge their...more
The longer and more frequently a principle is repeated by the courts, the more difficult it can be for courts to acknowledge change. As illustrated by the First Circuit’s opinion in Rodriguez v. Hospital San Cristobal, Inc.,...more
The Committee Notes to the newly implemented amendments to Federal Rule of Evidence 702 make clear that the “[j]udicial gatekeeping” of expert evidence is “essential.” Federal courts in New York have played an important role...more
Fun fact: There are 23 holidays that can be celebrated today, December 1st. Some, like Rosa Parks Day and World AIDS Day, are solemn and serious. Others are silly and fun, like National Peppermint Bark Day and National...more
On June 7, 2022, the Judicial Conference Committee on Rules of Practice and Procedure approved amendments to several of the Federal Rules of Evidence—including Rule 702, which governs the admissibility of expert witness...more
If you don’t know where a line is, you can’t say whether someone has crossed it. That principle applies in spades to expert witnesses, particularly when their role in the case calls on them to help the jury understand where...more
Though the pending amendments to Federal Rule of Evidence 702 have not taken effect officially yet, courts already have begun to cite them. Early signs indicate the potential that, consistent with the comments by the Advisory...more
Loss of productivity damages are commonly estimated using a “measured mile” analysis, which compares unimpacted construction work to work which has been disrupted to determine the cost impact of the disruption. Such analyses...more
A central tenet of toxicology is that “the dose makes the poison.” Every chemical is toxic if enough of it is consumed, and every chemical has some dose – even if miniscule – at which it poses no significant risk. A chemical...more
On opening an opinion, lawyers habitually roll their eyes when they see a table of contents. Even more so when they learn the opinion is over 300 pages. The MDL order granting defense motions to exclude experts and for...more
U.S. District Court for the Middle District of North Carolina, August 11, 2022 The late Robie Walls brought this asbestos action in early 2020 after a mesothelioma diagnosis. He alleged asbestos exposure from his service...more
The Judicial Conference of the United States’ Committee on Rules of Practice and Procedure seems poised to advance proposed amendments to Federal Rule of Evidence 702, after the Advisory Committee on Evidence unanimously...more
A proposed amendment to Federal Rule of Evidence 702, which governs the admissibility of expert testimony in federal court, could clarify the evidentiary burden on proponents of expert testimony and a court’s role regarding...more
It is not uncommon for an opposing expert to opine that the existence of injury alone implies negligence, nor is it unusual to find that such opinions are supported only by general reliance on “literature” with no discernible...more
On April 8, 2022, the U.S. Court of Appeals for the Ninth Circuit, sitting en banc, re-certified three classes of packaged tuna buyers, rejecting a Ninth Circuit panel-majority’s per se rule regarding a de minimis number of...more
Federal Rule of Evidence 702—Testimony by Expert Witnesses—was promulgated in 1975 when Congress first enacted the Federal Rules of Evidence. Original Rule 702 simply stated that “[i]f scientific, technical, or other...more
Litigators! Substantive amendments have been proposed to Federal Rule of Evidence 702. The public comment period closes February 16. Rule 702 was last amended substantively in 2000, soon after the concluding chapter in...more