Manvin Mayell is an experienced litigator whose practice focuses on white collar investigations and litigations, as well as commercial litigations and arbitrations and major product liability cases. He has represented pharmaceutical companies in investigations and litigations regarding government claims that marketing and contracting practices violate the False Claims Act and Anti-Kickback Statute, and has used those experiences to counsel clients regarding broad compliance issues. He has also represented government contractors in investigations and litigations under state and federal False Claims Acts. In addition, Mr. Mayell has represented financial services clients in internal investigations of alleged accounting fraud. Prior to joining the firm, he served as an Assistant United States Attorney in the Southern District of New York.

Mr. Mayell has served as lead trial counsel in a series of arbitration hearings for Philip Morris against state governments regarding disputes under the Master Settlement Agreement. He has also represented domestic and foreign corporations in a variety of litigations, including the nationally coordinated defense of leading pharmaceutical companies facing hundreds of product liability suits, as well as antitrust and breach of contract litigations. He is an experienced trial lawyer, having tried numerous cases to verdict and has handled a variety of appeals. Mr. Mayell is a co-author of the Deskbook on Internal Investigations, Corporate Compliance and White Collar Issues (Practising Law Institute 2016), focusing on issues under the federal False Claims Act.

Mr. Mayell was an Assistant United States Attorney for the Southern District of New York from 1991 to 1999, where he headed the environmental and tax and bankruptcy units of that office's Civil Division. During his tenure, he tried a number of cases and handled a wide range of civil litigation matters, including federal False Claims Act investigations and litigations, a civil RICO action against a corrupt labor union, ERISA litigation and employment and civil rights cases. In 1996, Mr. Mayell received the Director's Award for Superior Performance as an Assistant United States Attorney.


  • Major pharmaceutical companies regarding government investigations and litigations concerning marketing and contracting practices, including allegations of off-label promotion, kickbacks and false price reporting.
  • Defense contractors in government investigations regarding potential False Claims Act issues.
  • Philip Morris in arbitration hearings against states regarding disputes under the Master Settlement Agreement.
  • AstraZeneca, as a member of the co-national counsel team, in thousands of product liability lawsuits alleging that its antipsychotic medication Seroquel causes diabetes.
  • Novartis Consumer Health, Inc. in the phenylpropanolamine (PPA) product liability cases, coordinating trial strategy and litigation efforts nationally. Manvin worked closely with medical experts in developing trial testimony and handled expert discovery. The trials resulted in four defense verdicts and no plaintiff verdicts.
  • Large international pharmaceutical company in an antitrust action related to patent infringement allegations regarding a new drug product.
  • Audit committee of a public company in an internal investigation of alleged accounting fraud.
  • Financial institution in a breach of contract suit related to underwriting and servicing subprime loans.
  • Large financial institution in the successful defense at trial of a breach of contract lease claim against it by the landlord, resulting in the dismissal of all claims.
  • Leading brewer in a breach of contract claim regarding bottling equipment.


FCA Exposure in the Age of COVID—How to Distance Yourself From Liability
Coronavirus: False Claims Act Webinar
Is This Any Message to Send Our Medical Heroes? Second-Guessing the Clinical Judgments of Doctors on the Front Line
Qui Notes: Unlocking the False Claims Act
Beware of Relators Wearing Wires
Qui Notes: Unlocking the False Claims Act
Wait a Minute—No Escobar Materiality as to Hospital's Patient Arrival Time Reports and Employee Handbooks
Qui Notes: Unlocking the False Claims Act
Pharmaceutical and Medical Device Investigations and Enforcement Forum
Arnold & Porter Seminar, Short Hills, NJ


The Legal 500 US
Corporate Investigations and White-Collar Criminal Defense (2018-2019)


  • JD, Northwestern University School of Law, 1986, cum laude
  • BA, University of Virginia, 1982
  • New York
  • US Court of Appeals for the Second Circuit
  • US District Court, Southern District of New York
  • US District Court, Eastern District of New York
Government & Military Service
  • Assistant United States Attorney in the Southern District of New York

  • Member, Federal Bar Council
  • Member, South Asian Bar Association of New York

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