Patrick Moore

M. Patrick Moore Jr.


  • 617-557-9715
  • 617-227-0781
  • 75 State Street
  • Boston, MA 02109

M. Patrick Moore Jr.


  • 617-557-9715
  • 617-227-0781
  • 75 State Street
  • Boston, MA 02109

Practice Focus

Pat Moore is a litigator and counselor to nonprofit entities and candidates for office. Pat is Co-Chair of the Government & Election Law practice at Hemenway & Barnes and Partner in the Litigation group. He has considerable experience in government, as an attorney in the White House and counsel to two Massachusetts Governors; and on campaigns, most recently as Deputy General Counsel to the Biden for President Campaign.

Pat also represents state agencies, local governments, and those challenging laws, regulations, and government action. In addition, he advises public officials, candidates, and various nonprofit entities on ethics, election law, and campaign finance issues, including ballot initiatives. At times, Pat serves as outside general counsel for entities in these areas, including as General Counsel to the Presidential Inaugural Committee for President Biden and Vice President Harris.

Pat’s litigation practice brings him to all levels of federal and state courts and administrative agencies. He was named a “2019 Lawyer of the Year” by Massachusetts Lawyers Weekly for his role in an Supreme Judicial Court decision determining that a cognitive behavioral therapy program was “educational” as that term is used in state law, thereby permitting its development.

Before joining Hemenway & Barnes, Pat was an Associate Counsel and Advisor for Presidential Personnel at the White House in the administration of President Barack Obama. He also has served as Deputy Counsel to the Governor of the Commonwealth of Massachusetts, under Governor Deval L. Patrick and Governor Charles D. Baker.

At the outset of his legal career, Pat practiced for several years at a large Boston firm, a period that included a fellowship in the Government Bureau of the Massachusetts Attorney General’s Office. He served as a law clerk to the Honorable Maryanne Trump Barry of the U.S. Court of Appeals for the Third Circuit and to the Honorable Robert J. Cordy of the Supreme Judicial Court of Massachusetts; and he completed a fellowship with the Honorable Dennis Saylor IV of the United States District Court for the District of Massachusetts.

Representative Clients

  • Represents for-profit and non-profit entities and individuals In federal and state courts and administrative agencies (e.g., the Appellate Tax Board)
  • Counsels government officials, candidates for office, and political advocacy and social welfare organizations on ethics, election law, and campaign finance issues, at the federal and state levels
  • Successfully represented Governors of both parties in constitutional litigation before the Supreme Judicial Court; successfully advocated on behalf of state and municipal clients in trial and appellate courts, including the Martha’s Vineyard Land Bank and the Town of Falmouth
  • Crafted and submitted appellate and amicus curiae briefs to various federal circuit courts and the Supreme Judicial Court on behalf of prominent nonprofits, industry associations and government officials on a variety of topics including  federal and state constitutional issues
  • Represents clients before regulatory agencies and professional licensure boards


  • Named to the 2019 Lawyers of the Year list by Massachusetts Lawyers Weekly 
  • Named to the Massachusetts Super Lawyers Rising Stars List

Activities and Publications

  • Member, Board of Editors, Massachusetts Law Review
  • Member, Supreme Judicial Court Standing Committee on the Rules of Appellate Procedure
  • Member, Boston Bar Association, Amicus Committee 
  • Adjunct Professor at Boston College Law School
    • State Constitutional Law (2022)
    • Lawyering for the Elected Branches (2018-19)
    • Administrative Law (2017)
    • Conflict of Laws (2010 - 2014)
  • Pat speaks and writes frequently on administrative law, appellate litigation and election law issues, including:

Community Involvement

  • Member, Advisory Board, Rappaport Center for Law and Public Policy, Boston College Law School
  • Member, Board of Directors, Common Cause of Massachusetts

Patrick Moore’s Comment on Litigation and Administrative Law

“Effective advocacy begins with a full understanding of a client’s interests and objectives. On that foundation, a thoughtful, persuasive approach – consistent with the client’s broader persona – can be custom built for the circumstances."

Patrick Moore

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