David B. Rosenbaum
Recognized since 2005
Phoenix, Arizona
Practice Areas
Bet-the-Company Litigation
Commercial Litigation
Litigation - Construction
Litigation - Intellectual Property
Litigation - Mergers and Acquisitions
Litigation - Securities

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.
Contact & Links
- Direct Phone Number: 602-640-9000
- Phone Number: 602-640-9000
- Lawyer Page: https://www.omlaw.com/drosenbaum/
Location
- The Phoenix Plaza
2929 North Central Avenue, Suite 2000
Phoenix, AZ 85012-2793
Education
- Georgetown University, J.D., graduated 1983
- University of Pennsylvania, B.A., graduated 1979
Bar Admissions
- Arizona, 1984
- District of Columbia, 1985
Federal Clerkships
- United States District Court
Headquarters: Phoenix, Arizona
30 The Best Lawyers in America® awards
15 Best Lawyers: Ones to Watch® in America awards
Visit Website View Firm Profile

Named "Lawyer of the Year" by Best Lawyers® for:
- Litigation - Intellectual Property, Phoenix (2024)
- Litigation - Securities, Phoenix (2024)
- Litigation - Securities, Phoenix (2021)
- Litigation - Intellectual Property, Phoenix (2020)
- Bet-the-Company Litigation, Phoenix (2016)
- Litigation - Securities, Phoenix (2014)
- Bet-the-Company Litigation, Phoenix (2011)
Recognized in The Best Lawyers in America® 2026 for work in:
- Bet-the-Company Litigation
- Commercial Litigation
- Litigation - Construction
- Litigation - Intellectual Property
- Litigation - Mergers and Acquisitions
- Litigation - Securities
Special Focus:
- Civil Litigation
- Class Actions
- Commercial Disputes
- Complex Litigation
- COVID-19
- Defendants
- Intellectual Property
- SEC Enforcement
- Stockholders' Suits
Publications
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