Rosenbaum, David B.

  Phoenix, Arizona, USA
 +1 602-640-9345
 +1 602-640-9050
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David's practice focuses on complex commercial litigation in the state and federal courts. David has represented public companies and their officers and directors in numerous securities fraud class actions, represented Fortune 50 companies in a wide range of complex commercial litigation matters, including matters involving intellectual property disputes, represented a major telecommunications company in an array of commercial litigation matters, represented companies in sales and use tax disputes, and represented national and local companies in employment controversies, including class-action discrimination lawsuits. As past President of the Federal Bar Association and Lawyer Representative to the Ninth Circuit Judicial Conference, David has developed knowledge and experience in the finer points of prosecuting complex litigation in the federal courts.


  • J.D., magna cum laude, Georgetown University, 1983; Georgetown Law Review, Associate Editor, 1982-83
  • B.A., cum laude, History and Environmental Studies, University of Pennsylvania, 1979


  • U.S. District Court, District of Delaware, Judge Murray M. Schwartz, 1983-84

Professional Recognitions and Awards

  • Chambers USA, America's Leading Lawyers for Business, Litigation: General Commercial, 2005-2009
  • The Best Lawyers in America®, Bet-the-Company Litigation, Commercial Litigation, editions 2005-2010
  • Judge Learned Hand Award for Community Service, Arizona Chapter of American Jewish Committee, March, 2006
  • President's Award, State Bar of Arizona, June 2006
  • Top 50 Pro Bono Attorneys, 2001 

Bar Admissions

  • District of Columbia, 1985
  • Arizona, 1984

Court Admissions

  • U.S. Supreme Court,
  • U.S. Tax Court,
  • U.S. Court of Appeals, Ninth Circuit,
  • U.S. District Court, District of Arizona,
  • Arizona Supreme Court,
  • U.S. Court of Appeals, District of Columbia Circuit