David S. Nalven

Extensive experience in prosecution of antitrust, fraudulent marketing and unfair pricing claims against manufacturers of pharmaceutical products and medical devices, representing prescription drug wholesalers and retailers, health insurers and consumers in these matters
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Current Role

  • Partner, Hagens Berman Sobol Shapiro LLP
  • Practice focuses on prosecution of federal and multi-state class actions involving the pharmaceutical and medical device industries
  • Served in leadership roles in nationwide antitrust class actions against the manufacturers of Ovcon 35, OxyContin, Tricor, Wellbutrin XL, Toprol XL, Norvir, Doryx, Prograf, Nexium and others
  • Prosecuted fraudulent marketing class actions against the manufacturers of Serostim, Nexium, Actimmune and Zyprexa, as well as substantial matters against medical device manufacturers DePuy Spine, Inc. and Becton Dickinson
  • Worked extensively on the nationwide Average Wholesale Price Litigation and in the representation of the state of Connecticut in multiple prescription drug pricing matters


  • Chief of Business and Labor Protection Bureau, Massachusetts Attorney General’s Office, Commonwealth of Massachusetts, 1999-2004
  • Partner, Prince, Lobel & Tye, LLP, Boston, MA, 1991-1999
  • Private practice representing plaintiffs and defendants in civil and criminal business litigation, New York and Massachusetts, 1986-1991
  • Clerk to John R. Gibson, U.S. Court of Appeals for the Eighth Circuit, 1985-1986

Notable Cases

  • Average Wholesale Price Litigation
  • Tricor Antitrust Litigation
  • Wellbutrin XL Antitrust Litigation
  • DePuy Spine Artificial Disc Litigation