Erin O'Leary


Erin O’Leary is a partner in the New York office of Lewis Brisbois and a member of the Professional Liability Practice. She has diverse experience defending claims against attorneys, accountants, architects, engineers and other miscellaneous professionals. Many of the attorney malpractice claims, arise out of complex underlying medical malpractice cases, commercial litigation, matrimonial law, and real estate transactions. In addition, to her professional liability practice, she has extensive experience defending owners, contractors, developers and corporations in high exposure construction cases including New York labor law matters, premises liability and construction defect claims. She practices in New York state, federal and appellate courts. Ms. O’Leary has also served as an adjunct professor at CUNY’s Lehman College where she taught Business Law I and II to undergraduate students.


  • State Bar Admissions
    • New York
  • United States District Courts
    • United States District Court for the Eastern District of New York
    • United States District Court for the Southern District of New York
  • United States Courts of Appeals
    • United States Court of Appeals for the Second Circuit


New York

US District Court for the Eastern District of New York

US District Court for the Southern District of New York

United State Court of Appeal, Second Circuit


  • Member, National Association of Insurance Women
  • Member, New York State Bar Association


New York Law School

Juris Doctor, 1995

  • Chief Articles Editor, New York Law School Journal of Human Rights, 1994–1995

Mount Holyoke College

Bachelor of Arts, 1990

Representative Matters

  • Bajor v. 75 East End Owners Corp., 932 N.Y.S. 2d 40, 89 A.D. 3d 458 (1st Dept. 2011)
  • Thomas v. Booker, 905 N.Y.S. 2d 771, 76 A.D. 3d 456 (1st Dep’t 2010)
  • Dominguez v. Fontanella, 896 N.Y.S. 2d 572, 26 Misc. 3d 1079, (Sup. Ct. 2009)
  • Syllman v. Nissan, 794 N.Y.S. 2d 351, 18 A.D. 3d 221 (1st Dep’t 2005)
  • Tranchina v. Sisters of Charity Health Care System Nursing Home, 742 N.Y.S. 2d 655, 294 A.D. 2d 491 (2nd Dep’t 2002)
  • Hamilton v. Berreta U.S.A. Corp., 264 F. 3d 21 (2d Cir. 2001)
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