David A. Westrup

  • Office:
    • Milwaukee

      411 East Wisconsin Avenue
      Suite 1000
      Milwaukee, WI 53202

  • Telephone: (414) 287-1528
  • Fax: (414) 238-6678
  • Connect: LinkedIn Twitter

David Westrup is an equity shareholder and member of the firm’s Litigation and Risk Management Practice Group and Chair of the Drug and Medical Device Litigation Section. He advises insurers and corporations in minimizing product, environmental, and antitrust risks. He is panel counsel (Environmental, Life Sciences) for national insurance companies. He acts as special counsel on U.S. products and insurance law in overseas matters, including in matters before the House of Lords and the High Court of Australia. He is AV Preeminent® Peer Review Rated by Martindale-Hubbell®.

David cost-effectively manages risk and resolves disputes, using technology to improve outcomes and lower costs. He works extensively with claim management databases, some of which he has personally developed. He has represented corporations in numerous matters, either as national coordinating counsel, mediation/arbitration counsel, or as trial counsel in cases proceeding to verdict. Specifically, Columbia Casualty Company v. Arjo Wiggins Appleton PLC, was reported to be the largest tried to verdict in Brown County. Another, United States v. Ajinomoto Co., Inc., was a high-profile defense of a corporate executive in a global conspiracy to fix the price of lysine. (This conspiracy was the subject of The Informant! – the Stephen Soderberg film starring Matt Damon.)

David is a past-President of the Milwaukee Bar Association, as well as a past-President of the Wisconsin Hispanic Lawyers Association. He is a former member of the Board of the Milwaukee Bar Association Foundation, and a member of the American Bar Association, Seventh Circuit Bar Association, the Hispanic National Bar Association, the Defense Research Institute, and the Milwaukee Barristers’ Club. He is a Charter Member of Lawyers for Libraries, a group providing support to Milwaukee Public Library’s mission to inspire lifelong learning, advance knowledge, and strengthen Milwaukee’s neighborhoods. David routinely mentors litigation associates in pro bono engagements, and serves as a participant at law school trial advocacy programs.

David has authored a variety of articles on legal and law-related topics, including:

  • the historical roots of the right against self-incrimination;
  • procedural aspects of business torts and unfair competition claims;
  • diversity in the law;
  • extraterritorial application of the Racketeer Influenced and Corrupt Organizations (RICO) statute to civil claims;
  • health care and antitrust law;
  • twentieth-century art collector and New York attorney, John Quinn
  • the influence of translations; and
  • the Judge Dee Mysteries – a series of detective novels and stories, written by a twentieth-century Dutch diplomat named Robert van Gulik but set in seventh-century China.

Practice Areas:


  • University of Michigan Law School, J.D., cum laude, 1989
  • Columbia College, Columbia University, A.B., 1984

Bar Admissions:

  • Wisconsin
  • U.S. District Court, Eastern and Western Districts of Wisconsin
  • U.S. Court of Appeals, Seventh Circuit
  • Ohio
  • U.S. District Court, Southern District of Ohio
  • U.S. Court of Appeals, Sixth Circuit


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