Matthew H. Blumenstein

Matthew Blumenstein Photo

Matt Blumenstein practices in the areas of complex civil and criminal litigation.  He graduated from Stanford University (B.A., 2000) and Vanderbilt Law School (J.D., 2009), and he joined Williams & Connolly after clerking for Judge Karen LeCraft Henderson on the United States Court of Appeals for the District of Columbia Circuit.  He was named a “Rising Star” in the 2014-2019 D.C. editions of Super Lawyers.  He also is a member of the Board of Directors of Community of Hope, a non-profit organization focused on reducing homelessness and providing healthcare to low-income families in Washington, DC.

Representative Experience

  • Represented a financial services company in a DOJ money laundering investigation.
  • Represented the CFO of an energy company in DOJ and SEC investigations of alleged FCPA violations.
  • Defended a financial institution in a four-week jury trial and subsequent appeal regarding alleged FIRREA violations.
  • Represented a biopharmaceutical company in a commercial arbitration in New York.
  • Represented a technology company at an International Chamber of Commerce arbitration hearing regarding cellular patents.
  • Represented a commercial real estate data firm in copyright and unfair competition litigation in federal court, and coordinated related copyright lawsuits against the defendant’s agents in the Philippines and India.   
  • Defended several financial institutions against fraud, securities, and contract claims in a variety of lawsuits involving billions of dollars of mortgage-backed securities.
  • Defended a technology company and its board of directors in derivative actions related to alleged antitrust violations.
  • Represented the CEO of a technology company in a derivative action concerning alleged options backdating.
  • Defended a healthcare company in a securities class action related to a merger.
  • Defended a financial institution in a RICO class action related to mortgages.
  • Defended a technology startup against RICO, fraud, and contract claims by a former licensee.
  • Represented a private equity firm in multiple lawsuits concerning alleged misappropriation of trade secrets.
  • Defended a contractor in an Army debarment proceeding concerning alleged fuel theft and corruption in Afghanistan.
  • Represented pro bono clients in trial and appellate courts, including in a first-degree murder trial.




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