Margaret E. O'Grady


O'Grady, Magaret

Margaret O'Grady focuses her practice on antitrust litigation, responding to government antitrust investigations, and complex commercial litigation. She represents a variety of clients, including financial institutions and pharmaceutical companies.

Recent highlights include:

  • Representing Cephalon, Inc. in a Federal Trade Commission investigation as well as in federal antitrust litigation pending in the Eastern District of Pennsylvania relating to drug patent settlement agreements.
  • Defending a large financial services company in litigation and related investigations brought by the SEC and other state and federal agencies for claims related to breach of contract and fiduciary duty, ERISA and federal securities laws.

In addition, Ms. O'Grady maintains an active pro bono practice with a focus on family law and immigration matters.

Past Experience

Prior to joining WilmerHale, Ms. O'Grady was a teaching assistant in the Harvard Program on Negotiation and a policy analyst on a Senate campaign. She also previously worked in the Massachusetts State House as a legislative aide and researcher.

Publications & News


March 16, 2018

Principles of Antitrust Causation Are Alive and Well[butrin]: Why the Third Circuit Got It Right

An article by Margaret O'Grady and Peter Spaeth, published in Bloomberg Law's Antitrust & Trade Regulation Report. The Supreme Court's decision in FTC v Actavis Inc. opened the door to antitrust lawsuits based on "reverse payments." A separate appeals court decision, In re Wellbutrin Antitrust Litigation, could make it more difficult to assign damages in reverse payment cases. Ms. O'Grady and Mr. Spaeth explore how the two opinions can coexist.

April 1, 2011

A Jury of Your (Skinny) Peers: Weight-Based Peremptory Challenges and the Culture of Fat Bias

An article by Margaret O'Grady, published in Stanford Journal of Civil Rights & Civil Liberties, Volume 7 Issue 1, pages 47-81.


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JD, Harvard Law School, 2009

BA, History, magna cum laude, Wellesley College, 2004

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