J.D., Duke University School of Law
B.A., with distinction, University of North Carolina at Chapel Hill
Member, Duke Law and Technology Review
Bar and Court Admissions
District of Columbia Bar
North Carolina Bar
U.S. Courts of Appeals for the Fourth, Fifth and District of Columbia Circuits
U.S. District Courts for the District of Columbia and Northern District of Illinois
Mark represents clients facing civil and criminal fraud investigations and whistleblower complaints. He has successfully navigated clients through high-stakes, high-profile investigations by the U.S. Department of Justice (DOJ), state Attorneys General, the Federal Trade Commission (FTC), federal Inspectors General (IGs), and Congress. He has handled numerous False Claims Act (FCA) cases from investigation to litigation in industries such as defense, health care, technology, intelligence, insurance, and education. He can efficiently manage responses to subpoenas and civil investigative demands, developing strategies for quick, confidential results. Mark will aggressively defend clients in litigation, and he has a track record of securing dismissals or extremely favorable settlements.
- Leading cases:
- Won multiple sanctions against the DOJ for discovery violations and forced settlement for less than $9 million in FCA suit alleging $400 million of violations by a Coast Guard contractor. United States v. Bollinger Shipyards, Inc., Case No. 2:12-cv-920-SSV-MBN (E.D. La.).
- Navigated the lead developer of Healthcare.gov through congressional and IG investigations about the troubled rollout of the health care exchange system, shifting investigators from blaming the contractor to finding fault with government mismanagement of the project.
- Currently representing an engineering firm that advised the City of Flint, Michigan, on its water systems in criminal investigations by the State of Michigan Office of Special Counsel.
- Won outright dismissal of all 10 counts in criminal prosecution of 2017 Inauguration Day protester after obtaining sanctions for Brady violations against the U.S. Attorney’s Office. United States v. Litchfield, Case No. 2017 CF2 001235 (D.C.).
- FCA investigations resolved without litigation:
- Convinced a U.S. Attorney’s Office not to proceed with an FCA investigation of a software company regarding the use, implementation, and testing of technology supplied to military and intelligence agencies.
- Negotiated inexpensive settlement, without any discovery, of government investigation and qui tam suit alleging false statements in technology services proposal. U.S. ex. rel. Solicitation Integrity Associates v. Calnet LLC, Case No. 1:16-cv-421 (E.D. Va).
- Secured a declination from the DOJ in a qui tam suit by former employees alleging violations of the FCA by a government contractor, leading to dismissal of the entire suit. U.S. ex rel. Burghard v. AECOM, Case No. 2:08-cv-7389-ODW-CT (C.D. Cal.).
- Represented large technology companies in DOJ investigations and qui tam suits alleging alliance payments and defective pricing. United States ex rel. Rille v. PricewaterhouseCoopers LLP et al., Case No. 4:04-cv-00988-BRW (E.D. Ark.).
- Currently representing multiple companies responding to DOJ Civil Investigative Demands and Inspector General subpoenas regarding potential violations of the FCA, in industries such as defense, health care, technology, insurance, and education.
- FTC and Federal Communications Commission (FCC) enforcement matters:
- Negotiated a favorable settlement for a major wireless provider facing an FTC investigation and class action suits over marketing of its data plans. FTC v. TracFone Wireless, Inc., Case No. 3:15-cv-392-EMC (N.D. Cal.).
- Avoided investigation and received commendation from the FCC Enforcement Bureau after working with online payment platform to address concerns about compliance with the Telephone Consumer Protection Act.
- Secured a consent decree that avoided any admission of liability or forfeiture on behalf of a major wireless provider under investigation by the FCC Enforcement Bureau. In the Matter of TracFone Wireless, Inc., File No. EB-IHD-15-00018098.
- Fraud and commercial litigation:
- Won dismissal at a pleadings stage of federal and state lawsuits alleging Racketeer Influenced and Corrupt Organizations Act (RICO) violations, conspiracy, and other torts related to the collection of personal data by technology company and affiliates. Kimberlin v. Hunton & Williams LLP, Case No. 8:15-cv-00723-GJH (D. Md.); Kimberlin v. Hunton & Williams LLP, Case No. 420644-V (Mont. Cty.).
- Won dismissal of claims against multiple government contractors alleging RICO violations, fraud, and conspiracy. Brink et al. v. Xe Holding, LLC et al., Case No. 1:11-cv-1733-EGS (D.D.C.).
- Represented government contractor in multiple suits with former owner alleging fraud and breach of contract arising from fast-moving sale of company after U.S. Army denied base access due to security concerns about former owner. AAL USA, Inc. v. Black Hall Aerospace, Inc., Case No. 2:16-CV-2090-KOB; AAL Group, Ltd. v. Black Hall Aerospace, Inc., Case No. 2:17-CV-0399-KOB.
- Internal investigations to assess corporate employee misconduct and disclosure obligations:
- Conducted internal investigation of a public technology company’s compliance with small business regulations during channel sales to the federal government.
- Led multiple investigations for an intelligence community contractor regarding concerns about procurement integrity and mischarging on government contracts.
- Led an investigation into a whistleblower’s claims of mischarging and retaliation by a company that provides storage and logistics to the military.
- Conducted an internal investigation for a satellite company into violations of FCC regulations.
Other criminal defense:
- Represented a senior executive of a generic drug manufacturer in a criminal investigation into allegations of insider trading and violations of the good manufacturing practices.
- Navigated investment bank through grand jury investigation of its customer for tax and government contracts improprieties.
- Part of a trial team that defended a senior government official against allegations of false statements and obstruction of justice during the government’s investigation of illicit acts by a prominent lobbyist.
- Financial Analyst, American Airlines (1998-2000)
- American Bar Association (ABA)
- Co-Chair, Section of Public Contract Law, Procurement Fraud Committee (2018-2019)
- Vice-Chair, Section of Public Contract Law, Procurement Fraud Committee (2013-2018)
- Section of Criminal Justice, White Collar Crime Committee
- Federal Communications Bar Association (FCBA), Enforcement Committee
- William B. Bryant Inn of Court
- Named by The Legal 500 US a "recommended lawyer" in Corporate Investigations and White-Collar Criminal Defense (2019)
News & Insights
- June 19, 2019 | New York, NY | SPEAKING ENGAGEMENTThe Practice of Litigating FCA Cases in 2019: Insiders’ Views on How to Best Investigate, Prosecute and Defend FCA CasesABA False Claims Act and Qui Tam Trial Institute 2019Mark B. Sweet, Panelist
- June 3, 2019 | ARTICLEDOJ Announces New Guidelines for False Claims Act Settlement Credit for Disclosures, Cooperation, and RemediationWestlaw Journal Government ContractsMark B. Sweet, Roderick L. Thomas
- June 3, 2019 | PRESS RELEASE
- May 16, 2019 | Teleforum | SPEAKING ENGAGEMENTThe Federalist SocietyBrandon J. Moss, Speaker, Mark B. Sweet, Speaker
- May 15, 2019 | ALERTQui Tam Cases Rise from the Dead: Supreme Court Extends Statute of Limitations Even When the Government Declines to InterveneBrandon J. Moss, Mark B. Sweet
- May 9, 2019 | ALERTDOJ Announces New Guidelines for False Claims Act Settlement Credit for Disclosures, Cooperation, and RemediationMark B. Sweet, Roderick L. Thomas
- March 26, 2019 | Washington, DC | SPEAKING ENGAGEMENTABA/FCA Round Table Dinner and DiscussionAmerican Bar Association
- February 20, 2019 | Teleforum | SPEAKING ENGAGEMENTThe Federalist SocietyBrandon J. Moss, Speaker, Mark B. Sweet, Speaker
- February 2019 | NEWSLETTERAcquisition Councils Broadly Define Human Trafficking Prohibited Recruitment Fees: A Good Time for a Compliance Program Check-up
- January 16, 2019 | Washington, DC | SPEAKING ENGAGEMENTProcess & Strategy of Navigating a Civil False Claims Act InvestigationABA Procurement Fraud Committee and Suspension and Debarment Committee Joint MeetingMark B. Sweet, Panelist
- November 19, 2018 | ALERT
- October 30, 2018 | PRESS RELEASE
- September 21, 2018 | ARTICLEIt’s About Time: Courts Should Correct Unjust Interpretation of False Claims Act’s Statute of LimitationsWashington Legal Foundation
- September 18, 2018 | Washington, DC | SPEAKING ENGAGEMENTNew Trends in FCA CasesABA Section of Public Contract Law Procurement Fraud CommitteeMark B. Sweet, Panelist
- May 31, 2018 | PRESS RELEASEWiley Rein Secures Dismissal of Criminal Charges Against Inauguration Protester After Prosecutors Withheld Evidence
- February 2018 | ARTICLEWiley Rein's Government Contracts SBIR SeriesMark B. Sweet
- February 2018 | ARTICLEWiley Rein's Government Contracts SBIR SeriesMark B. Sweet
- February 2018 | NEWSLETTERDOJ Continues Defense-Friendly Trend: Failure to Follow Agency Guidance Is No Longer Evidence of a False Claims Act Violation
- January 11, 2018 | MEDIA MENTIONMark Sweet Quoted in Coverage of Request to Limit Engineering Officer’s Testimony in Flint Water Treatment Plant CaseThe Detroit News
- November 8, 2017 | Washington, DC | SPEAKING ENGAGEMENTE-Discovery in Government ContractsABA Section of Public Contract Law’s Young Lawyers Committee and Contract Claims and Dispute Resolution CommitteeMark B. Sweet, Panelist
- June 20, 2017 | Washington, DC | SPEAKING ENGAGEMENTIntersection of Accounting, Cost, Pricing, and False Claims Act Issues: When Regulatory Issues Become Fraud ConcernsABA Section of Public Contract Law Joint MeetingMark B. Sweet, Speaker
- March 29, 2017 | SPEAKING ENGAGEMENTThe Evolving False Claims Act: What to Expect and How to Comply After Escobar and Under the New AdministrationWiley Rein Webinar
- November 2016 | NEWSLETTER
- June 22, 2016 | MEDIA MENTIONFederal Computer Week (FCW)
- June 16, 2016 | ALERT
- June 16, 2016 | ALERTSupreme Court Holds “Implied Certification” a Valid Theory under the False Claims Act But Establishes a Strong New Defense for Defendants
- June 16, 2016 | Teleforum | SPEAKING ENGAGEMENTHow “False” Must a Claim be under the False Claims Act? The Supreme Court Decides Universal Health Services v. United States ex rel. EscobarThe Federalist SocietyMark B. Sweet, Speaker
- May 18, 2016 | Online Webinar | SPEAKING ENGAGEMENTWiley Rein Government Contracts Boot CampTodd A. Bromberg, Speaker, Mark B. Sweet, Speaker
- April 19, 2016 | ALERTMark B. Sweet, Stephen J. Obermeier
- February 18, 2016 | MEDIA MENTIONBloomberg BNA’s Federal Contracts Report
- February 16, 2016 | ARTICLETwo Supreme Court Cases Could Have Major Impact on the Risk of False Claims Act Liability for ContractorsBloomberg BNA's Federal Contracts ReportMark B. Sweet
- February 2016 | NEWSLETTER
- January 20, 2016 | Washington, DC | SPEAKING ENGAGEMENTFCBA CLE: False Claims Act: Enforcing USF Beneficiary Rules and Policing FraudMark B. Sweet, MODERATOR
- December 2015 | NEWSLETTER
- December 2015 | NEWSLETTER
- December 4, 2015 | MEDIA MENTIONLaw360
- May 2015 | NEWSLETTER
- March 16, 2015 | Washington, DC | SPEAKING ENGAGEMENTFCBA's FCC Enforcement Committee CLEMark B. Sweet, Speaker
- March 3, 2015 | ARTICLEBloomberg BNA's Federal Contracts ReportMark B. Sweet, Brian Walsh
- February 24, 2015 | ALERT
- December 19, 2014 | ALERTScott D. Delacourt, Mark B. Sweet
- December 9, 2014 | SPEAKING ENGAGEMENTFederal Trade Commission Compliance Challenges: Dealing With An Aggressive Enforcement AgencyWiley Rein Webinar
- Fall 2014 | ARTICLEChapters on the Delaware and Illinois False Claims ActsState False Claims Acts: A Practitioner's Guide to the False Claims Laws of the Various States
- July 25, 2014 | SPEAKING ENGAGEMENTWiley Rein Government Contracts Boot Camp Series: False Claims Act Risks for Companies Doing Business With the Federal GovernmentOnline WebinarMark B. Sweet, Speaker, John R. Prairie, Speaker
- June 27, 2014 | ALERTRalph J. Caccia, Mark B. Sweet
- May 2014 | ARTICLEFinancial Fraud Law Report
- March 20, 2014 | ALERT
- March 12, 2014 | MEDIA MENTIONLaw360
- February 2014 | ARTICLE
- February 10, 2014 | PRESS RELEASE
- February 3, 2014 | ARTICLEBloomberg BNA's Telecommunications Law Resource Center
- Fall 2013 | NEWSLETTER
- June 24, 2013 | ALERT
- January 24, 2013 | ALERTMark B. Sweet
- April 2012 | ARTICLEThe Metropolitan Corporate Counsel Vol. 20 No. 4
- March 2012 | ARTICLECan You Survive a Fraud Investigation? Part 1: A Practical Guide to Preparing for Government InvestigationsThe Metropolitan Corporate Counsel Vol. 20, No. 3
- February 22, 2012 | ALERT
- December 28, 2011 | PRESS RELEASE
- June 7, 2005 | PRESS RELEASE