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David F. Sorensen - Philadelphia, PA

Philadelphia Complex Mass Tort Lawyer
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Updated 11/14/2012
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Berger & Montague, P.C.

1622 Locust Street
Philadelphia, PA 19103

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David F. Sorensen Overview

David F. Sorensen is a shareholder in the Antitrust and Environmental & Mass Tort practice groups at Berger & Montague. He concentrates his practice on complex mass tort and antitrust class action litigation.

Mr. Sorensen's work with respect to mass torts is significant. He helped try a class action property damage case, Cook v. Rockwell Corporation that resulted in a jury verdict of $554 million in February 2006, after a four-month trial, on behalf of thousands of property owners near the former Rocky Flats nuclear weapons plant located outside Denver, Colorado. The jury verdict is the largest in Colorado history, and is the first time a jury has awarded damages to property owners living near one of the nation's nuclear weapons sites. In 2008, after extensive post-trial motions, the District Court entered a $926 million judgment for the plaintiffs. For his work in this case, Mr. Sorensen was among the trial team named as finalists for the 2006 "Trial Lawyer of the Year" award from the non-profit foundation, Trial Lawyers for Public Justice. He also has written and lectured about the case.

Mr. Sorensen played a major role in the firm's representation of the State of Connecticut in State of Connecticut v. Philip Morris, Inc., et al., in which Connecticut recovered approximately $3.6 billion (excluding interest) from certain manufacturers of tobacco products.

Mr. Sorensen also has been involved in a number of antitrust cases representing direct purchasers of prescription drugs. These cases have alleged that pharmaceutical manufacturers have wrongfully kept less expensive generic drugs off the market, in violation of the antitrust laws. Several of these cases have resulted in substantial cash settlements, including In re Terazosin Hydrochloride Antitrust Litigation, MDL 1317 (S.D.Fla.) ($75 million); and In re Remeron Antitrust Litig. ($75 million). He also argued and won class certification in In re K-Dur Antitrust Litigation, 2008 WL 2699390 (April 14, 2008 D. N.J.), and In re Nifedipine Antitrust Litigation, 246 F.R.D. 365 (D. D.C. 2007).

Practice Areas

  • Complex Mass Tort
  • Antitrust
  • Environmental & Mass Tort
  • Representing Opt-Outs in Class Actions


  • 100% of Practice Devoted to Litigation

Current Employment Position(s)

  • Shareholder

Bar Admissions

  • Pennsylvania, 1989
  • U.S. District Court Eastern District of Pennsylvania, 1989
  • U.S. Supreme Court


  • Yale Law School, New Haven, Connecticut, 1989
  • Duke University, Durham, North Carolina, 1983
    Honors: magna cum laude

Past Positions

  • Hon. Norma L. Shapiro (E.D. Pa.), Clerk, 1990 - 1991
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Office Information


1622 Locust Street
Philadelphia, PA 19103


(215) 875-5705




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