Matthew K. Flanagan

Co-Chair, Disciplinary Board Representation Practice Group
Shareholder

    Matt is a highly skilled litigator with over 30 years of trial and appellate experience and serves as Co-Chair of the firm's Disciplinary Board Representation Practice Group. His practice is concentrated on the defense of lawyers against malpractice actions, Judiciary Law 487 claims and grievances. He also defends other professionals and handles general litigation matters on behalf of corporate clients. He has successfully tried cases in New York City and its surrounding counties and has secured dozens of victories in attorney liability cases in New York State’s appellate courts.

    With a career-long focus on professional liability litigation, Matt lectures throughout the state on legal malpractice prevention and defense, ethics and professional responsibility. His articles relating to attorney ethics have been cited in the authoritative codification of the laws of New York, as well as New York’s leading treatise on the Rules of Professional Conduct.

    Among his numerous professional memberships, he is President of the Theodore Roosevelt American Inn of Court and is a member of the New York State Bar Association's Law Practice Management and Insurance Committees. He is a longtime member of the Nassau County Bar Association and served as Chair of the Association’s Ethics Committee from 2019 to 2022. He is also a longtime member of the American Bar Association.

    Matt has been recognized annually as a New York Metro Area Super Lawyer for over a decade and is rated AV Preeminent™ by Martindale-Hubbell, the highest peer-review ranking for an attorney's professional and ethical competence. A graduate of St. John's University School of Law and Fordham University, he is admitted to practice before the courts of the State of New York, the United States District Courts for the Southern and Eastern Districts of New York and the United States Court of Appeals for the Second Circuit.

    Classes and Seminars Taught

    Attorney Discipline, Theodore Roosevelt American Inn of Court (with program chairs Hon. Randall Eng, Appellate Division, Second Department (ret.), and Hon. Helen Voutsinas, Appellate Division, Second Department), November 15, 2023

    Risk Management and the Rules of Professional Conduct, Nassau County Bar Association, May 12, 2022

    Cybersecurity: Are You and Your Firm Compliant: A Checklist for Lawyers, Joint Presentation of Nassau County Women’s Bar Association and Nassau County Bar Association Ethics Committee, March 3, 2020

    Navigating Malpractice and Ethical Concerns for Trusts and Estates Attorneys, St. John’s University School of Law Continuing Legal Education Weekend, February 8, 2020

    Legal Malpractice: Elements & How to Avoid It, Suffolk Academy of Law, December 12, 2019

    Legal Malpractice: Reducing Your Risk and Strengthening Your Defense, St. John’s University School of Law Spring Continuing Legal Education Weekend, February 10, 2018

    Lawyers’ Ethics: Escrow Accounts (with Hon. Leonard Austin, Appellate Division, Second Department), Theodore Roosevelt American Inn of Court, December 12, 2017

    Judicial Ethics, What’s a Judge to Do? (with Hon. Vito DeStefano and Hon. Randy Sue Marber, Supreme Court, Nassau County), Theodore Roosevelt American Inn of Court, April 27, 2017

    Legal Malpractice: Professional Liability Claims, Litigation Strategies and Attorney Discipline Procedures, New York State Bar Association, Melville, New York, March 31, 2017

    Attorney Ethics: A Discussion of the New Statewide Procedures for Attorney Discipline Matters (with Abraham Krieger, Chairman of Grievance Committee for 10th Judicial District), St. John’s University School of Law Continuing Legal Education Weekend, February 25, 2017

    Legal Malpractice Update, Nassau County Bar Association, February 1, 2017

    Published Works

    “Escrow Cleanup: Taking Care of the Money Left Behind,” NYSBA Journal, Vol. 90, No. 8, New York State Bar Association, October 2018

    “On Ethics: Agreements Not To Grieve – Are They Ethical?” – Nassau Lawyer, November 1, 2017 

    “On Ethics: Addressing Claims Against A Client's Settlement Funds,” Nassau Lawyer, March 1, 2017

    “Bowing Out Ethically: Ending the Attorney-Client Relationship Before the Matter is Completed,” NYSBA Journal, Vol. 88, No. 7, New York State Bar Association, September 2016

    "Follow the Money - Escrow Accounts: The Dangers of Excessive Delegation and Deference," NYSBA Journal, Vol. 87, No. 5, New York State Bar Association, June 2015

    Admissions
    New York
    1993
    U.S. District Court Eastern District of New York
    1993
    U.S. District Court Southern District of New York
    1993
    U.S. Court of Appeals 2nd Circuit
    1996
    Education
    St. John’s University School of Law (J.D., 1992)
    Fordham University (B.A., 1989)
    Honors & awards
    New York Metro Area Super Lawyer
    2012-2024
    Associations & memberships
    American Bar Association (2007-Present)
    Nassau County Bar Association (1999-present); Ethics Committee (2011-present); Ethics Committee Chairman (2019-2022)
    New York State Bar Association (1999-present); Law Practice Management & Insurance Committees (2011-present)
    St. John’s University Alumni Association, Nassau Chapter (2000-present); President (2017-2020)
    Theodore Roosevelt American Inn of Court, (2011-present); President (October 2023-present)
    Year joined
    2024