Nancy Gellman is one of the founders of Conrad O’Brien and serves as the firm’s vice chair. Her extensive practice experience spans a broad array of matters, including complex commercial litigation, class action, insurance coverage cases, antitrust, professional liability, and employment litigation. Nancy is recognized as a leading trial lawyer, including being named a Fellow of the American College of Trial Lawyers and highly rated by Chambers USA: America’s Leading Lawyers for Business. She is also listed in Best Lawyers in America (for Commercial Litigation, Antitrust, Legal Malpractice Law – Defendants, and Bet-the-Company Litigation).
In addition to her litigation practice, Nancy has lectured on trial advocacy for the Pennsylvania Bar Institute, the Philadelphia Defense Institute, the Philadelphia Bar Association’s Trial Advocacy Program, and Temple University Law School’s L.L.M. in Trial Advocacy Program. She also taught appellate advocacy for several years at the University of Pennsylvania Law School.
Yale Law School, J.D.
Bryn Mawr College, A.B.
London School of Economics, Fulbright Fellowship
The Honorable Joseph S. Lord, III, former Chief Judge, United States District Court for the Eastern District of Pennsylvania
U.S. District Court for the Eastern District of Pennsylvania
U.S. District Court for the Middle District of Pennsylvania
U.S. Court of Appeals for the Third Circuit
Supreme Court of the United States
"She's very good on her feet, has a lot of gravitas and credibility in court, and is very thoughtful."
Chambers USA 2022
"She has a wealth of litigation experience and advises on a broad range of commercial disputes."
Chambers USA 2020
"She is a brilliant trial lawyer with superb intellectual prowess. Her writing and critical thinking have been instrumental in all the matters we have been involved with."
Chambers USA 2017
Fellow, American College of Trial Lawyers; Chair, Pennsylvania State Committee (2016–2018)
Selected as a Leading Lawyer for General Commercial Litigation in Chambers USA, The Client’s Guide to America's Leading Lawyers for Business (2003–present)
Listed in Best Lawyers in America for Commercial Litigation, Bet-The-Company Litigation, Litigation - Antitrust, and Legal Malpractice Law – Defendants (2001–present)
Named 2018 Philadelphia Legal Malpractice Law – Defendants “Lawyer of the Year” by Best Lawyers in America
Listed in Benchmark Litigation, Top 250 Women in Litigation
Listed as a "Local Star" in Benchmark Litigation, Guide to America's Leading Litigation Attorneys
AV® Preeminent™ Peer Review Rated by Martindale-Hubbell
Listed as a Pennsylvania Super Lawyer (2004–present)
Listed on the Top 50 Women in Pennsylvania Super Lawyers List (2004–present)
Listed on the Top 100: Pennsylvania Super Lawyers List (2020)
Listed on the Top 100: Philadelphia Super Lawyers List (2021-present)
American Law Institute
Bryn Mawr College Alumnae Association Executive Board, Secretary (2021-present)
Yale Law School Association - Vice President (2011–2013), Executive Committee (2009–2011, 2016-2019)
Drexel University Kline School of Law - Member, Law School Board (2013–present)
Fellow, American Bar Foundation
American Bar Association
Philadelphia Bar Association
Served as Judge Pro Tem, Court of Common Pleas, Philadelphia County
Served as Mediator, U.S. District Court for the Eastern District of Pennsylvania