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Donald R. Frederico, Esq.


Don Frederico has practiced law in Massachusetts and represented clients in courts nationally for more than 40 years. For the past 25 years, he has focused his practice on class actions. He has chaired the class action practices of national and regional law firms, serves on the Planning Committee for the ABA's National Institute on Class Actions, and teaches Class Action Law and Practice at Cornell Law School.

Don has handled a wide range of class action and other complex litigation matters for his clients. He served as lead national class action counsel for the "phentermine" defendants in the Diet Drug ("fen-phen") MDL, and has appeared before the Joint Panel on Multi-District Litigation in other class action cases. He has successfully brought and opposed Daubert motions directed at the testimony of scientific and economic experts in class actions and mass tort litigation. Don has negotiated, drafted, and obtained approval of class action settlements in a variety of federal and state courts.


Don frequently publishes and presents on class action topics. He co-authors the First Circuit chapter in the American Bar Association's Survey of Federal Class Action Law, and the Massachusetts chapter in the ABA's A Practitioner's Guide to Class Actions, and co-hosts the ABA's class action podcast, "Common Questions."


Don is a past President of the Boston Bar Association, and the current President of the Executive Board of Directors of the Cornell Law School Alumni Association. You can find his more detailed biography here.

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