Current Role
  • Partner and Management Committee Member, Hagens Berman Sobol Shapiro LLP
  • Ms. Byszewski has represented direct and indirect purchasers in complex antitrust and consumer class actions resulting in billions of dollars of settlements, including cases against major protein producers, car manufacturers and drug manufacturers, among others
  • Currently, Ms. Byszewski focuses her practice on brief writing for a wide variety of firm cases, including:
    • Antitrust cases involving collusion by major meat processors and other antitrust cases on behalf of indirect and direct purchasers
    • Auto defect cases and other product defect cases on behalf of consumers
    • College refund cases seeking return of tuition paid for promised in-person and on-campus education not received during the pandemic
Recent Success
  • Drafted petition for en banc review in Hyundai & Kia Fuel Economy Litig., which was granted and resulted in affirmance of the nationwide class action settlement in 2019
  • Milk Antitrust from complaint filing to settlement of $52 million and received the American Antitrust Institute’s 2018 award for Outstanding Antitrust Litigation Achievement in Private Law Practice
  • Member of litigation team that settled Toyota Unintended Acceleration Litigation for $1.6 billion and was a finalist for Public Justice’s 2014 Trial Lawyer of the Year award
Experience
  • Prior to joining Hagens Berman, focused her practice on labor and employment litigation and counseling; during law school worked in the trial division of the office of the Attorney General of Massachusetts
Recognition
  • 500 Global Plaintiff Lawyers, Lawdragon, 2024
  • 500 Leading Plaintiff Financial Lawyers, Lawdragon, 2020, 2022-2024
Notable Cases
Publications
  • "Valuing Companion Animals in Wrongful Death Cases: A Survey of Current Court and Legislative Action and A Suggestion for Valuing Loss of Companionship," Animal Law Review, 2003, Winner of the Animal Law Review's 5th Annual Student Writing Competition
  • "What's in the Wine? A History of FDA's Role," Food and Drug Law Journal, 2002
  • “ERISA and RICO: New Tools for HMO Litigators,” Journal of Law, Medicine & Ethics, 2000
Personal Insight

Ms. Byszewski enjoys spending time with her husband and their two sons.