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Matthew Eisenstein has more than two decades of experience representing clients in high-stakes, complex disputes in federal and state courts throughout the country. He has substantial experience litigating antitrust, product liability, the Administrative Procedure Act, consumer protection, and breach of contract matters, in all phases of class actions and multi-plaintiff suits at the trial and appellate levels. Matthew thrives on developing and implementing big-picture strategies and innovative arguments to help his clients achieve favorable outcomes. He routinely counsels clients on strategies to manage litigation and regulatory risk.

Prior to joining the firm, Matthew clerked for the Hon. Edmund V. Ludwig in the Eastern District of Pennsylvania.


  • Payment card company in individual and national class actions in federal court multidistrict litigation challenging interchange fees and network rules under the Sherman Act and state consumer protection statutes.
  • Payment card company in federal antitrust class action litigation challenging ATM access fee rules under the Sherman Act and state consumer protection statutes. 
  • Pharmaceutical company as national counsel in thousands of product liability suits transferred to a federal court multidistrict litigation.
  • Consumer product manufacturer in multiple consumer class actions asserting violations of state consumer protection statutes and common laws.
  • Payment card company in multiple consumer class actions asserting violations of federal antitrust laws and deceptive practices under federal and state consumer protection statutes.
  • Product manufacturer in implementing nationwide strategies regarding state statutes and regulations and compliance with the FDA regulations.



  • J.D., University of Pennsylvania Carey Law School, 2000
  • B.S., Industrial Engineering, Northwestern University, 1997


  • District of Columbia


  • U.S. District Court, Eastern District of Pennsylvania, The Honorable Edmund V. Ludwig