Brian P. Morrissey

Morrissey, Brian P.


Washington, D.C. +1 202 736 8798

1501 K Street, N.W.
Washington, D.C. 20005
+1 202 736 8798

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Brian P. Morrissey


BRIAN MORRISSEY represents corporate and individual clients in government enforcement actions, commercial litigation matters and appeals. In government-facing litigation, Brian has assisted clients in addressing a broad range of complex questions of constitutional, statutory and administrative law, including challenges to a variety of agency actions. In commercial matters, he has assisted clients in resolving disputes involving bankruptcy, false advertising, trade secrets, patent law and unfair competition. Brian has represented clients at every level of the federal court system, including the United States Supreme Court, in state trial and appellate courts, and in administrative agencies. At the federal level, he has experience in matters involving the United States Departments of Justice, Agriculture, and Housing and Urban Development, as well as the Securities and Exchange Commission, the Food & Drug Administration, and the Centers for Medicare & Medicaid Services. At the state level, Brian has significant experience in matters involving insurance departments and unclaimed property regulators.

A sample of Brian’s recent representations include the following:

  • Successfully defended international food producer at trial against allegations of breaches of the Packers & Stockyards Act. 
  • Representing leading life insurers in challenges to the retroactive enforcement of state insurance laws that impact insurers’ escheat, claims-investigation, and beneficiary-search obligations.
  • Represented international pharmaceutical manufacturer in achieving a favorable settlement of a False Claims Act case involving allegations of off-label promotion and kickbacks. 

Prior to joining the firm, Brian served as a law clerk to the Honorable Clarence Thomas, Associate Justice of the Supreme Court of the United States, and to the Honorable Diarmuid F. O’Scannlain, Judge on the United States Court of Appeals for the Ninth Circuit. In between these clerkships, Brian was an associate at another Washington, D.C. law firm, where he practiced white collar and commercial trial litigation. He earned his law degree, magna cum laude, from the University of Notre Dame Law School, where he served as editor-in-chief of the Notre Dame Law Review

In January 2012, Forbes magazine recognized Brian on its “30 Under 30” list of difference-makers in the fields of “Law and Policy.”

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