Claudine Columbres

Partner, New York



Claudine Columbres is a partner in the Firm's Commercial Litigation Practice, with a wide range of experience in complex business disputes, securities litigation, merger litigation and bankruptcy-related litigation. 

Claudine's work has spanned a broad range of industries including financial services, food service distribution, energy, and oil & gas. She has worked with clients including Anthem, Inc., JPMorgan Chase & Co., Hess Corporation, the Votorantim Group and Major League Baseball.

Dedicated to helping her clients achieve the best possible outcomes, Claudine has also successfully represented defendants in numerous pro bono cases involving family and matrimonial law.

Bars and Courts
New York
US District Court for the Eastern District of New York
US District Court for the Southern District of New York
US Court of Appeals for the Second Circuit
Columbia University School of Law
Georgetown University


Representation of Anthem, Inc., in a high-profile action resulting from the failed US$54 billion acquisition of Cigna Corporation. The case involved competing claims for tens of billions of dollars, and was closely followed by major media outlets as one of the most watched business cases.  

Representation of Anthem, Inc., in a US$12 billion lawsuit against one of the largest pharmacy benefits managers in the US, Express Scripts, Inc. (ESI), arising from ESI's breach of its contractual duties to negotiate in good faith to ensure that Anthem receives market pricing for pharmaceutical drugs and for certain operational breaches.

Representation of Advance Auto Parts, Inc., a national auto parts retailer, in a securities class action in the United States District Court for the District of Delaware.

Represented JPMorgan Chase & Co. in a lawsuit alleging contract, restitution and reformation claims challenging amounts allegedly owed by JPMorgan Chase under a Chapter 11 plan of reorganization. The case raised complex tax issues and involved multiple discovery disputes before it was successfully resolved via settlement.

Represented Fibria Celulose, a Brazilian pulp and paper company, in a federal securities class action alleging violations arising from foreign exchange derivative pricing practices.

Represented the Office of the Commissioner of Baseball, doing business as Major League Baseball, in the unique bankruptcy of the Los Angeles Dodgers and in connection with the sale of the team.

Defended Hess Corporation against numerous putative shareholder class action lawsuits filed in state and federal courts in Nevada and Colorado, challenging Hess' acquisition of American Oil & Gas. We consolidated the cases in the District of Colorado and then negotiated a disclosures-only settlement that resolved all the cases, and Hess' acquisition of American Oil & Gas closed without any changes to the merger's terms or price.


"Targeting Retail Discrimination with Parens Patriae," 36 Colum. J.L. & Soc. Probs. 203, 2003

Awards and Recognition

Listed in the Euromoney's Women in Business Law Guide for Litigation, 2020