Whether pursued on an individual basis or in the class setting, private antitrust litigation has played, and continues to play, an important role in the development of modern antitrust jurisprudence. And with notable Supreme Court cases like Twombly, Comcast, and Matsushita, private antitrust litigation has had an outsized influence on federal litigation more generally.

The Class Action and Private Litigation Committee monitors and provides a forum to discuss class action and private litigation antitrust law and policy. The Committee focuses on a wide range of issues relating to antitrust class action litigation, including class certification, procedural issues, substantive claims, and damages issues. The committee hosts several panel discussions each year that offer its members the opportunity to stay up-to-date on the latest developments and hot topics in the field while earning CLE credit. In recent years, the committee has hosted panels concerning private litigations against digital platforms, the rising use of litigation finance, and developments in class action jurisprudence.

The Committee also affords its members the opportunity to participate in other activities: members are encouraged to network at our events, present on topics and cases of recent interest at Committee meetings, plan and/or participate in Committee programming, and contribute written submissions on class action-related issues for the Section’s newsletter, Competition Chronicles.

Matthew Perez


Matthew Perez
DiCello Levitt Gutzler
485 Lexington Ave, 10th Floor
New York, NY 10017

Matt represents, individuals, businesses, public pension funds, and insurers in complex antitrust class actions. His practice spans a wide range of industries but with particular focus on pharmaceuticals and financial services. He currently litigates several pay-for-delay antitrust actions on behalf of consumers, health plans, and insurers alleging delayed generic entry for Opana ER, Bystolic, Sensipar, Xyrem, and Zetia. He has or is currently representing investors in financial services and commodity markets, including pension funds and traders in foreign exchange, international sovereign bonds, interest rate and credit derivatives, and commodity futures markets.

Matt previously worked for a nationally-recognized class action law firm and the New York State Office of the Attorney General Antitrust Bureau. He received the Louis J. Lefkowitz Memorial Award for his work investigating bid rigging and other illegal conduct in the municipal bond derivatives market, resulting in more than $260 million in restitution to municipalities and nonprofit entities. He also investigated pay-for-delay matters involving multinational pharmaceutical companies.

Matt is also a member of the Antitrust Section’s Executive Committee.


  • Louis J. Lefkowitz Memorial Award, New York State Office of the Attorney General (2011)
  • Rising Star, The Legal 500 (2020-2022)
  • New York Super Lawyers (listed annually since 2019)

Margaret RogersChair

Margaret Rogers
Arnold & Porter LLC

Margaret Rogers brings intellectual depth, practicality and a deep client focus to litigating complex commercial and antitrust disputes, including class action and multi-district litigation, in state and federal courts throughout the United States.  She has counseled and represented clients in such industries as pharmaceuticals, publishing, rail freight transportation, and financial services.  The New York Law Journal named Margaret as a Rising Star in recognition of the region’s most promising lawyers under 40.

Rosa Morales


Rosa Marina Morales

Rosa M. Morales is a high-stakes litigator and regulatory attorney who represents companies facing antitrust and competition disputes in government enforcement actions and private litigation, including class actions and multi-district litigation, in federal and state courts.  Rosa also counsels clients on avoiding antitrust exposure by performing compliance reviews, audits, and training across various industries, including transportation, agriculture, telecommunications, and media, with a special focus on the healthcare and financial services sectors.  In addition, Rosa represents clients in antitrust recovery actions, merger clearance before the federal antitrust agencies, and complex commercial, securities, and intellectual property litigation.  She has been recognized for her antitrust expertise and commitment to others and the law.  In 2022, Rosa was named the inaugural recipient of the prestigious Hollis Salzman Leadership Fellowship by the Antitrust Law Section of the New York State Bar Association, through which she was selected to participate in the Harvard Law School’s Women’s Leadership Initiative.  Rosa has also been recognized as a “Rising Star” in Antitrust Litigation by Super Lawyers.

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