About Constantine Cannon

Constantine Cannon is an internationally recognized law firm, with offices in New York, Washington DC and London, with expertise in antitrust and fraud.  Over the past ten years, the firm has recovered for its clients more than $5 billion and tens of billions of dollars more in injunctive relief.  The firm’s experience spans across multiple industries including healthcare, banking, pharmaceuticals, securities and commodities trading, insurance, high tech, the Internet and government contracting.

Learn more about our Whistleblower Law Firm Practice: click here 
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About Our Team

Gordon Scnhell

Gordon Schnell

Gordon Schnell has been a partner of Constantine Cannon since 1999, focusing on antitrust, fraud and whistleblower law.  He practices before all levels of federal court and regularly represents clients on antitrust and fraud matters before the DOJ, FTC and other federal and state enforcement agencies.  Mr. Schnell represents whistleblowers under the False Claims Act, Dodd-Frank/Wall Street Reform Act and the vast array of other whistleblower laws.

Mr. Schnell writes and speaks extensively on antitrust and fraud issues and is routinely interviewed and quoted in major business publications across the country including the Wall Street Journal, New York Times, Forbes, CNN, Bloomberg, USA Today, Newsweek and NPR.  Mr. Schnell graduated from Columbia University School of Law in 1991 as a Stone Scholar, and from Tufts University in 1986, summa cum laude, with a degree in electrical engineering and physics.  Mr. Schnell is a two-time recipient of the N. Hobbs Knight Prize Scholarship in Physics, is listed in the International Who’s Who of Competition Lawyers, and has been selected repeatedly as one of New York’s “Superlawyers” by Thomson Reuters.  To learn more about Mr. Schnell, click here.

Marlene KouryMarlene Koury

Marlene Koury is an associate in the New York office of Constantine Cannon.  Ms. Koury joined the firm in 2007 and concentrates her practice on antitrust litigation and counseling and representing whistleblowers under the False Claims Act and the Dodd-Frank/Wall Street Reform Act.  Ms. Koury earned her J.D., cum laude, from Seattle University and her B.A. in Philosophy from the University of Washington.  Ms. Koury is admitted to practice in New York.  To learn more about Ms. Koury, click here.


Jason Enzler

Jason Enzler

Mr. Enzler joined Constantine Cannon in 2008 as an associate in the firm’s Washington, DC office.  His practice focuses on commercial litigation, antitrust, and representing whistleblowers under the False Claims Act and the Dodd-Frank/Wall Street Reform Act.  Mr. Enzler earned a J.D., magna cum laude, from The Catholic University, Columbus School of Law in 2005 and his undergraduate degree from Iowa State University.  Mr. Enzler is admitted to practice in the District of Columbia and in New York.  To learn more about Mr. Enzler, click here.



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