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Overview

Clients rely on Matt for his innovative solutions to their business challenges from areas spanning antitrust and consumer protection investigations, state and federal False Claims Act litigation, to matters involving corruption of government officials.

As the leader of Husch Blackwell’s State Attorneys General Practice and a member of the firm’s Government Compliance, Investigations & Litigation team, Matt represents and advises clients in a wide variety of lawsuits and regulatory disputes across the United States. In an era of heightened state-level regulatory scrutiny and enforcement, Matt’s practice involves regularly interfacing with state attorneys general and their staffs and assisting companies in navigating complicated legal, public relations and crisis management hurdles.

Matt’s practice focuses particularly on defending corporations and individuals accused of consumer fraud and violations of antitrust laws, healthcare fraud, and other violations of federal and state law. Matt has represented clients in high-profile matters before the U.S. Attorney for the Southern District of New York, the U.S. Department of Justice (DOJ) Antitrust Division and the Federal Trade Commission (FTC). Matt is experienced in helping clients respond to grand jury subpoenas and civil investigative demands.

Matt assists clients in protecting what is most important to them, and he achieved what is believed to be the first permanent injunction under the Defend Trade Secrets Act of 2016 (DTSA). Matt regularly prosecutes affirmative civil litigation in federal court to protect client intellectual property.


Industries

Services

Recognition

  • Missouri & Kansas Super Lawyers, Litigation, Rising Star, 2018-2019

Education

  • J.D., Saint Louis University School of Law
  • B.A., Tulane University

Admissions

  • Missouri
  • U.S. District Court, Eastern District of Missouri
  • U.S. District Court, Western District of Missouri
  • Illinois
  • U.S. District Court, Southern District of Illinois
  • U.S. District Court, District of Kansas
  • U.S. District Court, District of Colorado
  • U.S. Court of Appeals, Eighth Circuit
  • U.S. Court of Appeals, Tenth Circuit
  • U.S. Tax Court

Professional Memberships and Certifications

  • Federal Bar Association, St. Louis Chapter, Vice President
  • Bar Association of Metropolitan St. Louis
Experience

Litigation

  • Obtained one of the first ever permanent injunctions under Defend Trade Secret Acts (DTSA) in a high-profile corporate espionage and deceptive trade secrets case. (Monsanto Company et al v. Chen, No. 4:16-cv-00876-CDP, U.S. District Court, Eastern District of Missouri)
  • Obtained a preliminary injunction from the District Court, Eastern District of California, against enforcement of California's Proposition 65 warning requirement as to the herbicide glyphosate on First Amendment grounds, because the cancer warning would be misleading and factually controversial as to glyphosate. This currently stands as the only time a federal court has enjoined a Proposition 65 warning requirement on First Amendment grounds. The case remains pending before the district court. (National Association of Wheat Growers v. Zeise, 309 F. Supp. 3d 842, 849, E.D. Cal. 2018)
  • As first-chair trial counsel, obtained jury verdict for compensatory and punitive damages in U.S. District Court, Southern District of Illinois. (Ford v. Wexford Health Source, et al., No. 3:11-cv-992-PMF, U.S. District Court, Southern District of Illinois)
  • Obtained motion to dismiss in the representation of a healthcare facility in a qui tam matter before the U.S. District Court, District of Colorado. Whistleblowers had alleged damages of approximately $33 million, but our client instead received a judgment for an award of attorneys' fees and litigation costs against whistleblowers. Successfully defended the district court decision on appeal. (United States ex rel. Hanlon v. Columbine Health Systems, No. 1:13-cv-826-REB-KLM, U.S. District Court, District of Colorado)
  • Successfully petitioned the Eighth Circuit Court of Appeals for a rare writ of mandamus compelling the U.S. District Court to recognize our client as victim of a Ponzi scheme, allowing client to receive restitution as the victim of a federal financial crime. (In re Michael Ursch, No. 15-1859, U.S. Court of Appeals, Eighth Circuit)

Investigations

  • Conducted numerous internal investigations for publicly traded and privately held companies in a variety of industries, including sustainable agriculture, healthcare, manufacturing, defense contracting and religious organizations in the areas of healthcare fraud, employee misconduct, data breach and environmental violations, among others.
  • Member of team that successfully represented employees of a Major League Baseball team in a data breach, corporate espionage matter.
Seminars | April 2, 2019
Sweetleaf: An Outlier or Reason for Concern?

Cannabis Seminar

Seminars | June 28, 2018
Cannabis Law Now: Criminal Investigations June 28, 2018

Join Husch Blackwell attorneys for a deeper look at the effect of the Cole Memo rescission on federal enforcement efforts, both civil and criminal, and for analysis of what factors will drive federal enforcement moving forward. This program is geared toward cannabis business owners and will provide practical compliance tips.

News Releases | November 14, 2018
Thomson Reuters' Missouri & Kansas Super Lawyers and Rising Stars 2018 Names 58 Husch Blackwell Attorneys

Husch Blackwell has 58 attorneys in the 2018 edition of Missouri & Kansas Super Lawyers and Rising Stars.

Media Mentions | March 19, 2018
Danforth Center Roots and Shoots Blog: Venture Cafe Night - Going Global

Matt Diehr and Mike Annis discuss trade secrets and information protection programs at National Ag Day program focusing on innovation.

Media Mentions | December 07, 2017
Clayton Times: Husch Blackwell elects 18 to partnership
News Releases | December 04, 2017
Husch Blackwell Elects 18 to Partnership
Outside the Office

Matt enjoys spending time with his wife and two young daughters, Gussie and Maren.

Community Leadership
  • St. Louis University High School Alumni Board, 2012-present

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