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A Better Partnership

Brian P. Lennon

Partner | Email

  • Grand Rapids

    t. +1.616.752.2089

    f. +1.616.752.2500


Brian Lennon specializes in criminal defense, particularly Health Care Fraud and other white collar and drug offenses, corporate internal investigations and compliance matters. As a federal prosecutor in Michigan and Virginia for 15 years and a trial attorney for the U.S. Department of Justice’s Civil Division, Brian has conducted hundreds of grand jury investigations, handled a variety of civil cases in U.S. District Courts throughout the country and tried nearly 70 criminal cases to verdict -- from drunk driving to complex money-laundering schemes to murder. As Deputy Chief of the Criminal Division for the U.S. Attorney’s Office in the Western District of Michigan, Brian supervised the Health Care Fraud and computer-related crimes units, among others. He also spent four and a half years as a judge advocate for the U.S. Marine Corps, handling both civil and criminal matters.

As a prosecutor, Brian watched some of the brightest and best-intentioned individuals and companies make poor decisions when they became the subject of an administrative, civil or criminal investigation. As a private-practice lawyer, he’s determined to help his clients avoid those missteps. “I understand the real world implications of investigations and criminal prosecutions,” he says. “I fully appreciate the fact that your liberty and livelihood are at stake.”

In 2011, Brian was honored with the prestigious “Superior Performance as a Criminal Prosecutor” award from U.S. Attorney General Eric Holder. 


  • University of Notre Dame J.D. 1992
  • Harvard University A.B. Ed. 1988


  • 1992, Michigan

Bar Associations

  • American Bar Association
  • Federal Bar Association
    President (Oct. 2019-Sept. 2020), West Michigan Chapter
  • State Bar of Michigan
  • Grand Rapids Bar Association


Honors & Awards

  • Top Lawyer in White-Collar Criminal Defense, Grand Rapids Magazine, 2020-21
  • Ranked in the top 10 of the 2020 Leading Lawyers Magazine – Michigan Edition for Criminal Defense and White Collar Criminal Defense
  • Michigan Super Lawyers, 2019-Present
  • 2020 A Lawyer Helps Pro Bono Honor Roll, State Bar of Michigan
  • EOUSA Director's Award for Superior Performance as Criminal Prosecutor, 2011
  • National Association of Former U.S. Attorney's Award for Exceptional Services, 2011


Professional Affiliations

  • American Health Lawyers Association
  • Michigan Colleges Alliance
    Board of Trustees Member (2012-Present)
  • Federal Bar Association
    Treasurer, West Michigan Chapter

Community Affiliations

  • Grace Episcopal Church
    Former Vestry, Junior Warden; Endowment Fund Board
  • West Michigan Aviation Academy
    Board of Directors Member
    Former Health Education Advisory Board Member
  • Grand Rapids Ballet
    Former Co-coordinator of Volunteers

Speaking Engagements

  • "Student Athlete Name/Image Likeness," Back to School--Preparing for Legal Challenges in Higher Education Warner Webinar, July 28, 2021
  • "Business Visas" and "I-9 Enforcement," Warner Human Resources Seminar, May 3, 2018, Grand Rapids, Michigan
  • "The Ethics of Buying Stolen Data, Whether Yours or Someone Else's," Data Solutions Spring Symposium, April 18, 2018, Troy, Michigan
  • "Is Marihuana Legal?," Medical Marihuana – Legal Answers to Your Tough Questions webinar, December 4, 2017
  • "Who's Responsible: A Data Breach Case Study," and "Internal Corporate Investigations - Using Tools to Discover the Truth Quickly and Inexpensively (Novi only), Data Solutions Spring Symposium, March 11, 2016, Grand Rapids, Michigan, and April 22, 2016, Novi, Michigan
  • "Planning for Security Breaches," Data Solutions Fall Symposium, Warner Seminar, October 23, 2015, Grand Rapids, Michigan
  • Data Solutions Symposium, Warner Seminar, June 24, 2015, Southfield, Michigan
  • West Michigan American Records Management Association (ARMS) Spring Seminar, April 16, 2015, Grand Rapids, Michigan
  • Data Solutions Symposium, Warner Seminar, March 20, 2015, Grand Rapids, Michigan
  • “Workplace Investigations,” Warner Human Resources Seminar, April 22, 2014, Grand Rapids, Michigan

NOTICE. Although we would like to hear from you, we cannot represent you until we know that doing so will not create a conflict of interest. Also, we cannot treat unsolicited information as confidential. Accordingly, please do not send us any information about any matter that may involve you until you receive a written statement from us that we represent you.

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