Karen C. Dyer 

Partner – New York
T.+1 212 504 6979
200 Liberty Street
New York, NY 10281 V-CARD

Karen represents various Fortune 500 companies as well as a number of significant multimillion and multibillion dollar, independently owned entities in commercial litigation, including complex federal litigation, civil RICO, antitrust, and bankruptcy. She has lectured on class action litigation and federal civil procedure.

Her experience includes representing private equity and venture capital firms in large U.S. and international disputes.  She recently represented a private venture capital company in a shareholder dispute with one of the largest rental car companies worldwide.  She co-tried two New York actions representing the 50 percent owner of multibillion-dollar soft drink company Arizona Iced-Tea, including the action that dissolved and valued the interests of the partnership that owned Arizona.  She has represented The Related Companies in a number of major matters, including successfully defending Related as well as pursuing affirmative claims on its behalf leading to a summary judgment order awarding millions in damages to Related as plaintiff.  She has also represented the Starr Companies (“SICO”) and its CEO Hank Greenberg in a number of litigations, including presenting witnesses and argument in the trial that resulted in a defense verdict for SICO on a $5.3 billion claim brought by AIG and also representing SICO in its clams against a major accounting firm and other defendants involving a hundred million dollar plus Russian bank investment.  In 2014, she was one of the lead trial counsel for a relator in a federal qui tam case that resulted in a favorable jury verdict and $664 million judgment.  She also recently defended Mitsui Chemicals in a trade secret act case in federal court and was lead trial counsel defending DuPont in a federal trade secret act case in 2016. Recently, she represented Nike in a  jury trial case in federal court.

Karen has represented Tyco subsidiary ADT Security, successfully defending ADT against various class actions and in trial against individual franchisees.  She has also represented Ruth’s Hospitality Group, Inc. (“Ruth’ Chris”) in franchisor/franchisee litigation. She has been involved in a constitutional dispute in Florida over legislative redistricting, and a summary judgment in favor of her client was upheld on appeal by the Eleventh Circuit Court of Appeals. In a matter involving the death of a whale trainer at SeaWorld in 2010, Karen obtained a temporary injunction, which ultimately resulted in a permanent one, blocking the dissemination of materials depicting the death.

She has consistently been listed in Lawdragon’s 500 Leading Lawyers in America.

Karen received her J.D., with honors, from University of Florida Law School, where she was Editor-in-Chief of Florida International Law Journal, and her B.S. from University of Florida.

*Certain representations occurred prior to Karen’s association with Cadwalader, Wickersham & Taft LLP.

Karen C. Dyer 

Practice Areas


  • University of Florida, Fredric G. Levin College of Law
    J.D., with honors
  • University of Florida


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