Kevin R. Mosier

Kevin R. Mosier


617-443-9292, ext. 254
Suffolk University Law School

J.D., summa cum laude

University of Massachusetts Amherst

B.S., cum laude

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  • Sunstein Best Lawyers 2024

Practice Areas


  • Suffolk University Law School

    J.D., summa cum laude

  • University of Massachusetts Amherst

    B.S., cum laude


Kevin is an associate at Sunstein and focuses his practice on Intellectual Property litigation – primarily patent, trade secret, and trademark litigation. He has been involved in numerous litigations in federal district courts, the Court of Appeals for the Federal Circuit, the International Trade Commission, and the Trademark Trial and Appeal Board.

Kevin’s trial experience includes serving as third-chair in successfully defending a merchant services technology company against patent infringement claims in the District of Delaware, and recently obtaining a multi-million recovery on behalf of a scientific instrumentation and machinery supplier for misappropriation of its trade secrets.

Prior to joining Sunstein, Kevin worked at an Intellectual Property Law firm where he concentrated in patent litigation. Kevin attended Suffolk University Law School where he was a Note Editor and member of the Article Selection Committee of the Law Review.

Before law school, Kevin worked for the Massachusetts Board of Medicine, where he assisted the Board and General Counsel with licensure enforcement proceedings and helped the Board develop safe prescribing policies and practices related to opioids, medical marijuana, and other controlled substances.

Bar and Court Admissions

  • Massachusetts
  • U.S. District Court for the District of Massachusetts
  • U.S. Court of Appeals for the Federal Circuit

Professional and Community Involvement

  • Federal Bar Association, IP Section
  • Boston Bar Association
  • IP Inn of Court
  • Outside Interests: Hockey, skiing, golf, classic literature, European history


  • Selected to Best Lawyers: Ones to Watch® in America in the areas of Litigation – Intellectual Property and Litigation – Patent, 2024.
  • Recognized in Massachusetts Rising Stars, published by Super Lawyers, 2023.

Practice areas

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