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Eoin P. Beirne

Member / Co-chair, White Collar Defense and Government Investigations Practice

[email protected]

+1.617.348.1707

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Eóin is a nationally recognized trial lawyer and career defense lawyer who represents companies, executives, public officials, and board committees in their most sensitive government investigations and high-stakes criminal and civil enforcement matters. Co-chair of Mintz’s White Collar Defense and Government Investigations Practice, Eóin is known for achieving quiet, early-stage resolutions with the DOJ, SEC, state attorneys general, and other enforcement agencies — and for winning when cases must be tried.

Eóin has secured acquittals, dismissals, and declinations in complex cases involving allegations of securities fraud, health care fraud, government contracting fraud, public corruption, insider trading, FCPA violations, and False Claims Act liability. He regularly advises corporate boards and special committees on internal investigations, whistleblower allegations, and crisis-driven compliance matters, and has deep experience guiding clients through parallel criminal, civil, and regulatory inquiries. Eóin’s investigations have helped clients avoid government charges and reputational damage, negotiate favorable resolutions, and get back to business.

When a negotiated resolution is not possible, Eóin is a veteran courtroom advocate who served as trial counsel in the only full trial acquittal obtained in the nationwide “Varsity Blues” prosecution. Recognized by Chambers USA and named a Litigation Trailblazer by the National Law Journal, he has represented clients in some of the largest and highest-visibility investigations in recent years, including matters involving the DOJ Special Counsel, the global 1MDB investigation, federal cybercrime inquiries, NTSB investigations, and postincident infrastructure failures.

In addition to his work for clients, Eoin serves a faculty member of the Trial Advocacy program at Harvard Law School.

Eóin is a nationally recognized trial lawyer and career defense lawyer who represents companies, executives, public officials, and board committees in their most sensitive government investigations and high-stakes criminal and civil enforcement matters. Co-chair of Mintz’s White Collar Defense and Government Investigations Practice, Eóin is known for achieving quiet, early-stage resolutions with the DOJ, SEC, state attorneys general, and other enforcement agencies — and for winning when cases must be tried.

Experience

Representative Matters

  • Led defense team securing the lone trial acquittal of a charged parent in the “Varsity Blues” federal admissions cases.
  • Obtained declination for a top executive in the multibillion-dollar global 1MDB investigation after strategic advocacy to DOJ.
  • Represented individual recorded on a wire by a cooperating witness in high-profile insider trading conspiracy case involving Fortune 100 companies; no charges were brought following presentation to the DOJ.
  • Avoided all charges for a federal defense contractor following voluntary self-disclosure of potential FCA and criminal issues.
  • Represented multiple individuals and entities in DOJ Special Counsel’s post-2020 election investigations with no charges brought.
  • Successfully defended a large ophthalmology practice that provided trans-cranial doppler ultrasounds (TCDs) in alleged kickback investigation, resulting in no charges being brought.
  • Convinced DOJ not to charge medical practices, laboratories, and government contractors in numerous FCA, Anti-Kickback, and fraud matters.
  • Trial counsel in a high-profile criminal fraud trial in the Southern District of New York.
  • Achieved complete trial dismissal of federal wire and mail fraud charges against an individual in a large-scale fraud case in the District of Massachusetts.
  • Represented corporations and executives in SEC and DOJ insider trading investigations, securing declinations.
  • Guided a public utility contractor through NTSB and federal grand jury investigations arising from the Merrimack Valley explosions — with no charges filed.
  • Conducted numerous board-level internal investigations following whistleblower complaints, CIDs, subpoenas, and cyber incidents.
  • Represented national and locally elected officials in Congressional and grand jury investigations.
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viewpoints

True to their word in several recent public statements, the Chief and Deputy Chief of the Medicaid Fraud Division have brought several recent criminal cases against dentists for fraudulent billing and unlicensed practice of dentistry.

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Acting U.S. Attorney Joshua Levy discussed the enforcement priorities for the Massachusetts U.S. Attorney’s Office (USAO) during a Q&A session on May 29, 2024, and made clear that the historical focus of the office remains the top priority: detecting and combating health care fraud, waste, and abuse. 

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In early March 2024 at the American Bar Association’s 39th National Institute on White Collar Crime, Deputy Attorney General (DAG) Lisa Monaco’s keynote remarks previewed the development of new and significant Department of Justice (DOJ or the Department) policy initiatives. Her speech reemphasized many of DOJ’s key themes throughout the current administration, including individual accountability, the importance of strong corporate compliance programs, incentivizing voluntary self-disclosure of misconduct, and adapting to keep up with disruptive technologies such as artificial intelligence.

 

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In 2023, DOJ announced significant updates to the Criminal Division’s Corporate Enforcement Policy, the agency’s Voluntary Self-Disclosure Policy for corporate criminal enforcement, and a new safe harbor for voluntary self-disclosures made in connection with M&A deals, all aimed at incentivizing companies to self-disclose their misconduct.

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Throughout 2023, the Department of Justice has prioritized voluntary self-disclosure of misconduct. The introduction of the M&A Safe Harbor Policy extends these principles to mergers and acquisitions, emphasizing the pivotal role of effective compliance programs. White Collar Defense and Government Investigations Practice Co-chair Eoin Beirne and Associate Nick LaPalme present a high-level summary of the policy, offering valuable insights into its implications for companies navigating the complexities of mergers and acquisitions.

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At the American Bar Association’s 38th Annual National Institute on White Collar Crime, Department of Justice (“DOJ”) officials announced multiple significant policy updates regarding corporate compliance.

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On December 16, 2022, United States Attorney General Merrick Garland issued two related memoranda (collectively, the “Garland Memo”) which provide guidance to federal prosecutors regarding department policies for charging, pleas, and sentencing. Following publication of the Garland Memo, on January 17, 2023, Assistant Attorney General for the DOJ’s Criminal Division Kenneth Allen Polite Jr. announced important revisions to the Criminal Division’s Corporate Enforcement Policy (the “CEP”), which alter how it will evaluate corporate criminal matters.

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News & Press

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podcasts

In this episode, Health Care Enforcement Defense specialists Eoin Beirne, Karen Lovitch, and Brian Dunphy discuss key regulatory and policy updates issued by the DOJ and their potential impact on False Claims Act cases, from self-disclosure to privacy regulations.

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Podcast Viewpoint Image

Bridgette Keller speaks with Karen Lovitch, Brian Dunphy, and Eoin Beirne about the Mintz Health Care Enforcement Defense Practice’s recent edition of the EnforceMintz newsletter, Analyzing Health Care False Claims Act Cases, and key health care enforcement trends.

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Eóin is a nationally recognized trial lawyer and career defense lawyer who represents companies, executives, public officials, and board committees in their most sensitive government investigations and high-stakes criminal and civil enforcement matters. Co-chair of Mintz’s White Collar Defense and Government Investigations Practice, Eóin is known for achieving quiet, early-stage resolutions with the DOJ, SEC, state attorneys general, and other enforcement agencies — and for winning when cases must be tried.

Recognition & Awards

  • Chambers USA: Massachusetts – Litigation: White Collar Crime and Government Investigations (2022 – 2026)

  • Lawdragon: 500 Leading Litigators in America (2022 – 2027)

  • Lawdragon: 500 Leading Global Investigations Lawyers (2026)

  • Best Lawyers in America: Criminal Defense: White Collar (2021 – 2027)

  • National Law Journal: 2022 Litigation Trailblazer

  • Fellow, Litigation Counsel of America, The Trial Lawyer Honorary Society

  • Massachusetts Super Lawyers: Criminal Defense: White Collar (2017 – 2025)

  • Boston Magazine: Top Lawyers – Criminal Defense: White Collar (2021 – 2022, 2025)

  • Legal 500: Recommended Lawyer – Corporate Investigations and White-Collar Criminal Defense (2026)

  • Mondaq: Thought Leadership Award Winner, Autumn 2025

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Eóin is a nationally recognized trial lawyer and career defense lawyer who represents companies, executives, public officials, and board committees in their most sensitive government investigations and high-stakes criminal and civil enforcement matters. Co-chair of Mintz’s White Collar Defense and Government Investigations Practice, Eóin is known for achieving quiet, early-stage resolutions with the DOJ, SEC, state attorneys general, and other enforcement agencies — and for winning when cases must be tried.

Involvement

  • Member, Boston Bar Association
  • Member, Federal Bar Association
  • Past Board Member, Massachusetts Association of Criminal Defense Lawyers (MACDL)
  • Past Member, American Bar Association’s Public Corruption and Extortion Subcommittee and the Criminal E-Discovery Taskforce
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Eoin P. Beirne

Member / Co-chair, White Collar Defense and Government Investigations Practice

Boston