John W. Van Lonkhuyzen

T: (207) 253-4624
  • Yale University (M.Phil., 1984)
  • Yale Law School (J.D., 1983)
  • Yale University (M.A., 1982)
  • Amherst College (B.A., 1979), summa cum laude


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AV Rated by Martindale-Hubbell


John Van Lonkhuyzen is a partner in the firm’s Trial and Health Care Groups and chairs its Criminal Defense, White Collar and Government Enforcement Practice Group. He serves clients from Verrill Dana's Boston and Portland offices. John focuses his practice on compliance, government and internal investigations, and white collar criminal defense, with an emphasis on the health care industry and antitrust matters. John has extensive experience leading complex multi-defendant investigations, managing vast amounts of electronic data and confidential information, building cases, and trying those cases to verdict – or resolving them short of charge or trial where that is appropriate.

Mr. Van Lonkhuyzen has tried numerous federal and state criminal cases involving bid rigging, fraud, political corruption, tax and national security issues. He has also conducted and defended merger and civil non-merger antitrust investigations. John has investigated and tried cases in federal district courts across the United States, and in various counties in the Commonwealth of Massachusetts. He has also argued appeals before several United States Courts of Appeals.

Prior to joining the firm, John spent almost 20 years with the United States Department of Justice, where he worked in the Antitrust, Criminal and National Security Divisions. John investigated mergers and acquisitions in a variety of industries, and prosecuted complex, multi-defendant bid-rigging and other white collar crime in the health care, financial services and other industries for the Antitrust Division. He also managed and conducted terrorism and national security investigations and prosecutions for the Criminal and National Security Divisions. As a prosecutor, John has worked closely with a variety of federal and state law enforcement, investigatory and regulatory authorities, as well as foreign counterparts.

After his clerkship, John practiced as an associate in the Litigation Department of Ropes & Gray from 1985 until 1991, where he represented health care, higher education and high-tech clients in antitrust, medical malpractice, intellectual property and other matters. John then joined the Office of the Massachusetts Attorney General, where he prosecuted political corruption, economic crimes and other matters, before joining the U.S. Department of Justice.

John has served as a bar advocate, providing criminal defense representation to indigent defendants, and on the boards of directors of several day care centers.

Public Service

Guest Lecturer, "Antitrust 101 for Healthcare Lawyers" for Boston University Law 
    School course on Health Care Transactions (2015-2018)
Guest Lecturer, "Antitrust 101 for Healthcare Lawyers" for Maine Law and Public 
    Policy course on Health Care Law and Ethics (2016)
Instructor, Adjunct Faculty, Seton Hall University Law School, “Issues in 
    Counterterrorism” (Spring 2008)
Board of Directors, Westfield Day Care Center, Inc. (2008 to 2014), President 
    (2010 to 2014)
Board of Directors, Clara Barton Center for Children, Inc. (2003-2007), President 


Maine State Bar Association (Health Law Section)
Boston Bar Association (Criminal Law Section – Steering Committee)
Federal Bar Association
American Bar Association (Criminal Justice and Antitrust Law Sections)
American Health Lawyers Association
Maine Association of Criminal Defense Lawyers


  • Yale University (M.Phil., 1984)
  • Yale Law School (J.D., 1983)
  • Yale University (M.A., 1982)
  • Amherst College (B.A., 1979), summa cum laude


  • Hon. Richard D. Cudahy, U.S. Court of Appeals for the Seventh Circuit

Bar Admissions

  • Massachusetts, 1985
  • Maine, 1987

Court and Other Admissions

  • U.S. Court of Appeals for the First Circuit
  • U.S. Court of Appeals for the Seventh Circuit
  • U.S. District Court for the District of Massachusetts
  • U.S. District Court for the District of Maine
  • U.S. District Court for the District of Puerto Rico


AV Rated by Martindale-Hubbell
Received Katahdin Counsel Recognition for Pro Bono efforts (2016)
IRS Criminal Investigation Chief’s Award, recognizing excellence in tax and 
    financial investigation of corruption in the municipal bonds reinvestment 
    market on the Munibonds team (2014)
Assistant Attorney General’s Award, for work on the Munibonds team, including 
    trial of United States v. Ghavami, et al. (S.D.N.Y.) (2013)
Attorney General's Award for Excellence in Furthering the Interests of U.S. 
    National Security, for prosecution of United States v. Moussaoui (E.D.VA.) 
Director of Central Intelligence's Medallion Seal, for remarkable contributions to 
    the CIA's mission in the global war on terrorism (2006)
Counterterrorism Section's Reynolds Award, for outstanding contributions as an 
    attorney (2004)