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Gregory L. Halperin

Partner

New York +1 212 841 1166

  • About
  • Representative Matters
  • Credentials
  • About

    Greg Halperin is a trial lawyer with experience spanning more than 170 trial days. He has particular expertise representing clients in the life sciences industry in complex product liability and mass tort litigation.

    As a member of eight trial teams, Greg has experience crafting opening statements and closing arguments, and examining key fact and expert witnesses at trial. Greg was a member of the team that tried the first opioids case involving wholesale distributors to verdict, resulting in a complete defense win. He also participated in trial wins involving Pradaxa and Roundup.

    Greg is skilled in all stages of litigation, including taking and defending depositions, preparing witnesses, and drafting Daubert and dispositive motions. He has argued numerous motions in state and federal court, including recently in the first multi-plaintiff trial in St. Louis involving allegations that Roundup causes non-Hodgkin’s lymphoma. He also represents clients on appeal and has authored amicus briefs before the United States Supreme Court.

    Super Lawyers has recognized Greg as a Products Liability “Rising Star,” and Best Lawyers has named him on its “Ones to Watch” list for Product Liability and Mass Tort Litigation.

    Greg joined Covington following a clerkship with the Honorable Paul V. Niemeyer on the United States Court of Appeals for the Fourth Circuit. Prior to his clerkship, Greg graduated magna cum laude from Harvard Law School, where he served as an Executive Editor of the Harvard Law Review.

    Areas of Expertise

  • Practices and Industries
  • Representative Matters
    • Representing McKesson Corporation in nationwide opioid litigation. Member of trial teams in various cases brought by states and municipalities across the country. Following a three-month bench trial, secured a complete defense victory against the City of Huntington and Cabell County. Following a five-month trial, reached a favorable settlement with Washington State for less than one percent of the money initially sought.
    • Represented Monsanto Company in the first multi-plaintiff Roundup trial in St. Louis, resulting a defense verdict. Argued summary judgment, Daubert, directed verdict, evidentiary, and post-trial motions.
    • Represented Boehringer Ingelheim Pharmaceuticals, Inc. in nationwide product liability litigation involving the novel oral anticoagulant Pradaxa. Member of two trial teams that secured defense verdicts after weeks-long trials.
    • Defended Hoffmann-La Roche Inc. in product liability litigation involving the prescription acne medication Accutane. Secured appellate wins affirming the adequacy of the medicine’s labeling and exclusion of plaintiffs’ scientific experts.
    • Defended Takata Corporation in mass tort litigation involving airbag inflators.
    • Represented major international aviation corporation in confidential arbitration resulting in rejection of respondent’s claim that aircraft was defectively designed, successful award of damages, and recovery of attorneys’ fees.
    • Authored numerous amicus curiae briefs on behalf of life sciences trade groups on issues critical to the branded pharmaceutical industry, including preemption and innovator liability.

    Areas of Expertise

  • Credentials
    Education
    • Harvard Law School, J.D., 2014
        • magna cum laude
        • Harvard Law Review, Executive Editor and Transition Chair
        • Supreme Court Litigation Clinic
    • Duke University, B.A., 2011
        • summa cum laude
        • Phi Beta Kappa Society
        • Pi Sigma Alpha National Political Honor Society
    Bar Admissions
    • New York
    • District of Columbia
    • U.S. Court of Appeals for the Fourth Circuit
    • U.S. Court of Appeals for the Tenth Circuit
    • U.S. District Court, District of Maryland
    • U.S. District Court, Eastern District of New York
    • U.S. District Court, Southern District of New York
    Judicial Clerkship
    • Hon. Paul V. Niemeyer, U.S. Court of Appeals, Fourth Circuit, 2014 - 2015
    Pro Bono
    • Represented a federal detainee in habeas corpus proceedings before the Fourth Circuit.
    Accolades
    • New York Metro Super Lawyers, Products Liability “Rising Star” (2020-2023)
    • Best Lawyers in America, Mass Torts Litigation and Product Liability Litigation “One to Watch” (2023-2024)
    • Lawyers for Civil Justice, Outstanding Contributor (2023)
    • Capital Pro Bono Honor Roll (2015, 2017)

    Areas of Expertise

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