John W. Van Lonkhuyzen

        Partner
        Contact Info
        John W. Van Lonkhuyzen John W. Van Lonkhuyzen

        John focuses his practice on compliance, government enforcement and internal investigations, as well as white collar criminal defense, with an emphasis on the health care and manufacturing industries 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. John also represents medical professionals facing parallel criminal and licensing board matters, as well as defending and counseling health care providers facing False Claims Act investigations, qui tam whistleblower lawsuits, and anti-trust matters. John has obtained the dismissal with prejudice of all federal False Claims Act and whistleblower retaliation claims against a health care provider client, after successfully defending the accompanying government investigation.

        John is a member of the firm’s Criminal Defense, White Collar & Government Enforcement Group. John has tried numerous federal and state criminal cases involving bid rigging, fraud, antitrust, political corruption, tax, and national security issues. John’s experience extends to grand jury investigations. John has developed 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. John was recently antitrust counsel to the lead defendant and defense team in the successful defense of a federal criminal antitrust trial in which the jury acquitted all defendants of charges of wage fixing and no poach agreements in violation of Section 1 of the Sherman Act.

        John has conducted and defended merger and civil non-merger antitrust investigations, represented parties involved in civil antitrust litigation, and represented both acquired and acquiring entities in making HSR filings, primarily in the health care industry. He has also counseled clients in dealing with state antitrust authorities and making required filings when necessary.

        Prior to joining the firm, John spent almost 20 years with the United States Department of Justice. John investigated mergers and acquisitions in a variety of industries and prosecuted complex, multi-defendant antitrust and fraud crimes in the health care, financial services, and other industries while working for the Antitrust Division. While working for the Criminal and National Security Divisions, he managed and conducted terrorism and national security investigations and prosecutions. John worked closely with a variety of federal and state law enforcement, investigatory, and regulatory authorities, as well as foreign counterparts, and now uses that experience in representing clients subject to investigation.

        After his clerkship, John practiced as a litigation associate at Ropes & Gray before joining the Massachusetts Attorney General’s Office, where he prosecuted political corruption, economic and tax crimes, and other matters before joining the U.S. Department of Justice.

        John regularly accepts appointments to provide criminal defense representation to indigent defendants as a Criminal Justice Act (CJA) panel member.

        Services/Industries

        Education

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

        Public Service

        • Regular Guest Lecturer, Antitrust 101 for Healthcare Lawyers for Boston University Law School course, “Health Care Transactions”
        • Guest Lecturer, Antitrust 101 for Healthcare Lawyers for Maine Law and Public Policy course, “Health Care Law and Ethics”
        • Instructor, Adjunct Faculty, Seton Hall University Law School, “Issues in Counterterrorism” (spring 2008)
        • Board of Directors, Westfield Day Care Center, Inc. (2008-2014), President (2010-2014)
        • Board of Directors, Clara Barton Center for Children, Inc. (2003-2007), President (2005-2007)

        Bar Admissions

        • Massachusetts
        • Maine

        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

        Memberships

        • American Bar Association (Criminal Justice and Antitrust Law Sections)
        • Boston Bar Association (White Collar Crime and Health Law Sections)
        • Maine Association of Criminal Defense Lawyers
        • Maine State Bar Association (Health Law Section)

        Honors

        • 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.) (2006)
        • 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)

        Learn more about the third-party ratings, rankings, and selection processes used for inclusion.

        Clerkships

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

        Firm Highlights

        Press Releases

        97 Verrill Attorneys Recognized by Best Lawyers® 2027, Including Four Named Lawyers of the Year

        AUGUSTA, Maine, BANGOR, Maine, BOSTON, Mass., PORTLAND, Maine, and WESTPORT, Conn., (August 20, 2026) – Verrill is proud to announce that 97...
        Alerts and Newsletters

        SEC’s Proposed “Reg Crypto”: What Founders Need to Know

        Startup founders and emerging-growth companies have a number of options for raising capital under the federal securities laws, including Regulation D...
        Blog

        After 45 Years, the IRS Speaks on DCAP Nondiscrimination Testing – And It’s Good News

        Employers that provide a Dependent Care Assistance Program will be pleased to learn that for the first time in 45 years, the IRS has issued guidance...
        Media Mentions

        Robert Keach Discusses Bankruptcy Auction Strategy in Law360

        Verrill attorney Robert Keach spoke with Law360 article examining the complex bankruptcy auction process that resulted in the sale of 23 summer...
        Media Mentions

        Martha Gaythwaite Featured in Portland Press Herald Coverage of Sig Sauer Trial Victory

        Verrill attorney Martha Gaythwaite was highlighted in media coverage of a federal trial in Bangor involving firearm manufacturer Sig Sauer. As...
        Media Mentions

        Law360 Quotes Robert Keach on Senate Bill Affecting Small Business Restructurings

        Verrill attorney Robert Keach was recently quoted in a Law360 article discussing federal legislation that would permanently restore the $7.5 million...
        Alerts and Newsletters

        SAFEs and Preferred Stock – Key Deal Terms Every Founder Should Know

        SAFEs Before negotiating a term sheet for preferred stock, many early-stage companies, particularly at the seed stage, first raise capital through...
        Press Releases

        Verrill Welcomes Business Restructuring and Insolvency Attorney Nimra Tariq

        BOSTON, Massachusetts – Verrill is pleased to announce that Nimra Tariq has joined the firm’s Business Restructuring and Insolvency Group as an...
        Media Mentions

        Robert Keach Provides Commentary on First Brands Restructuring in Law360

        Verrill attorney Robert Keach was quoted in the Law360 article, "First Brands' Ch. 11 Plan Revives Angst Over Admin Claims," discussing First Brands...
        Press Releases

        Verrill Welcomes Construction Attorney Cassie Dufon

        PORTLAND, Maine – Verrill is pleased to welcome Cassie Dufon to the firm’s Construction Group as an Associate, resident in the firm’s Portland...
        Press Releases

        Verrill’s Wide-Ranging Private Wealth Law Practice Recognized in 2026 Chambers and Partners High Net Worth Guide

        BANGOR and PORTLAND, Maine and BOSTON, Mass. – Verrill attorneys Kenneth P. Brier, Anya F. Endsley, Kurt E. Klebe, Mary McQuillen, Nathaniel S....
        Blog

        Update on Status of Maine Packaging EPR

        In December 2024, Verrill published a blog post, Unwrapping Maine's Gift to the Environment: A New Packaging Stewardship Program Set to Launch in...