Mark Sheridan concentrates his practice in commercial litigation with a focus on insurance coverage and public policy matters.

Applying his trial and appellate experience in state and federal courts, Mark represents a broad base of clients in the insurance, manufacturing, real estate and professional services industries, advocating on their behalf in courts throughout the country.

Within the insurance coverage context, Mark represents insurers in connection with complex disputes. In this capacity, he counsels clients on coverage determinations, policy drafting and litigation. The majority of his time is spent representing insurance carriers in connection with insurance coverage litigation arising out of intellectual property disputes.

Mark advises clients in matters involving the interplay between business and government at all levels. His government affairs practice includes the representation of businesses in their dealings with state and federal regulators, as well as in related litigation, and extends into the world of politics. Currently, he serves as general counsel for the New Jersey Republican State Committee, where he represents the New Jersey Republican Party and the political committees of the Republican legislative leadership in matters involving campaign finance and election law litigation. Mark was also a member of New Jersey Governor Chris Christie’s transition team.

Before arriving at the firm, Mark was a partner at one of Am Law’s largest 100 US law firms. He currently serves as a member of the Board of Trustees of Carrier Clinic, a private, not-for-profit behavioral healthcare system located in Skillman, NJ, which specializes in psychiatric and addiction treatment.

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  • Rutgers University School of Law, J.D., 1999
  • Muhlenberg College, B.A., 1996


  • New Jersey


  • U.S. Court of Appeals for the 1st, 3rd, 4th and 9th Circuits
  • U.S. District Court for the District of New Jersey
  • U.S. District Court for the Southern District of New York
  • U.S. District Court for the Western District of Wisconsin

Memberships & Affiliations

  • Member of the Board of Trustees of Carrier Clinic
  • Recognized in Chambers USA for Litigation: Insurance in New Jersey (2013-2014, 2016-2019)
  • The Best Lawyers in America, Insurance Law (2019-2024)
  • Recognized in Super Lawyers for Insurance since 2015
  • "The Power List," (2011)
  • “40 Under 40,” New Jersey Law Journal (2009)

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