Profile

Maggie O'Neil is an Associate in the firm's Litigation department. Ms. O’Neil represents clients in a variety of litigation contexts, including from pre-suit investigation through trial, across numerous industries and types of legal claims. 

From 2022 to 2023, Ms. O’Neil served as a law clerk to the Hon. Jennifer L. Rochon of the United States District Court for the Southern District of New York. From 2019 to 2020, Ms. O’Neil served as a Law Clerk to the Hon. Richard J. Sullivan of the United States Court of Appeals for the Second Circuit.

Bar Admissions

  • New York

Education

  • Georgetown University Law Center (J.D., summa cum laude, 2018)
    • Managing Editor, Georgetown Law Journal, Annual Review of Criminal Procedure
    • Order of the Coif
    • Francis E. Lucey, S.J. Award for Highest Academic Achievement in Graduating Class
  • Marquette University (B.A., summa cum laude, 2015)
    • Phi Beta Kappa

Areas of Practice

  • Complex Commercial Actions
  • Litigation

Blogs

Antitrust Update

Antitrust Update Blog is a source of insights, information and analysis on criminal and civil antitrust and competition-related issues. Patterson Belknap’s antitrust lawyers represent clients in antitrust litigation and counseling matters, including those related to pricing, marketing, distribution, franchising, and joint ventures and other strategic alliances. We have significant experience with government civil and criminal/cartel investigations, providing the unique perspectives of former...

Data Security Law Blog

DataSecurityLaw.com is the firm’s resource for the latest news, analysis, and thought leadership in the critical area of privacy and cybersecurity law. Patterson Belknap’s Privacy and Data Security practice provides public and private enterprises, their leadership teams and boards with comprehensive services in this critical area. Our team of experienced litigators, corporate advisors and former federal and state prosecutors advises on a broad range of privacy and data protection matters...

Misbranded

Misbranded is Patterson Belknap’s blog covering false advertising litigation—both consumer class actions and competitor suits—with a particular focus on FDA-regulated products (foods/beverages, pharmaceuticals, cosmetics, and dietary supplements).

New York Commercial Division Decisions

The blog is a source for insights and developments related to practice in the Commercial Division of the New York State Supreme Court. This blog reviews key developments in the Commercial Division, including important decisions handed down by the Commercial Division and appellate court decisions reviewing Commercial Division decisions. The blog also covers changes and proposed changes to Commercial Division rules and practice, including revisions to the rules since January 2015. The...

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