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William Hoffman

William Hoffman

Complex Commercial Litigation Department
Leader, Life Sciences Group

Washington, D.C.
T: +1 202 682 3550
F: +1 202 414 0355

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  • University of Michigan Law School
    JD, 1990, Order of the Coif
  • Johns Hopkins University School of Advanced International Studies
    MA, 1985
  • Vassar College
    AB, 1983, Phi Beta Kappa


  • District of Columbia
  • New York
  • US District Court for the District of Columbia
  • US District Court for the Southern District of New York
  • US Court of Appeals for the Second Circuit
  • US Court of Appeals for the District of Columbia Circuit
  • US Court of Appeals for the Eighth Circuit

William Hoffman is the leader of Kaye Scholer’s national-recognised Life Sciences Group.  He represents a number of the leading pharmaceutical companies in the world in a wide range of litigation and counseling matters.

William is an experienced trial and appellate lawyer who has represented a wide range of clients in major product liability and other complex litigation, criminal investigations, actions by State Attorneys General, regulatory matters and litigation avoidance counseling. William has tried a number of cases to verdict in both state and federal court, has argued numerous appeals and conducted evidentiary hearings. He is a member of the DC Circuit’s Appointed Counsel Panel.

From 1992 to 1996, William served as an Assistant United States Attorney for the Southern District of New York, where he represented the government in a wide range of civil litigation and criminal investigations.

William served as a law clerk to the Honorable James L. Buckley, United States Circuit Court Judge for the District of Columbia Circuit, from 1991 to 1992.

William has been individually recognized by a number of industry guides and publications. He is recommended by The Legal 500 United States in the categories of product liability and mass tort defense: pharmaceuticals and medical devices and Healthcare: life sciences, and recognized by Who’s Who Legal 2013 and 2016 for his work in life sciences, regulatory and product liability defense. William was also named as a “Life Science Star” in the 2012, 2013, 2014 and 2015 issues of Euromoney’s LMG Life Sciences Guide. Additionally, he has been recognized as one of the leading Product Liability Defense and Life Sciences practitioners in The International Who’s Who of Business Lawyers and has served as an instructor at the Foundation for Law and Science Center’s Judicial Science Training on Daubert Issues. William was previously an adjunct professor at the Fordham Law School. He has authored several articles and chapters concerning pharmaceutical criminal and regulatory issues.

Representative Matters

Products Liability Coordination & Litigation

  • Bayer — National Counsel Xarelto Product Liability Litigation (2015–Present).
  • Pfizer — National Coordinating Counsel Asbestos Litigation (2013–Present).
  • Pfizer — National Counsel In re Reglan Products Liability Litigation (2011–Present).
  • Novartis — National Counsel Aliskiren Products Liability Litigation (2013–Present).
  • Pfizer — In re Hormone Replacement Products Liability Litigation (2004–Present).
  • Pfizer — In re Rezulin Products Liability Litigation (2000–2007).
  • Astra Zeneca — In re Seroquel Products Liability (2007–2012).
  • Wyeth — In re Diet Drugs Products Liability Litigation (1997–2004).

Criminal and State Attorney General Investigations

  • Represented major pharmaceutical companies in federal criminal investigation concerning allegations of failure to disclose safety information.
  • Represented companies in criminal investigations involving failure to disclose safety information and marketing activities.
  • Represented major pharmaceutical companies in State Attorney General investigations and civil actions concerning marketing and sales activities.

Appellate Practice

  • Lyman v. Pfizer, 2012 WL 2970627 (D. Vt. 2012).
  • Kellogg v. Pfizer, 2012 WL 2970621 (D. Vt. 2012).
  • Williams v. Martinez, 586 F.3d 995 (DC Cir. 2009).
  • In re Prempro Products Liability Litig., 586 F.3d 547 (8th Cir. 2009).
  • Pangburn v. Culbertson, 200 F.3d 65 (2d Cir. 1999).
  • U.S. v. Adleman (II), 134 F.3d 1194 (2d Cir. 1998).
  • U.S. v. Adleman (I), 68 F.3d 1495 (2d Cir. 1995).
  • State of New York v. Shalala, 50 F.3d 179 (2d Cir. 1995).
  • Kuralt v. U.S., 40 F.3d 25 (2d Cir. 1995).
  • Buitrago-Cuesta v. I.N.S., 7 F.3d 291 (2d Cir. 1993).