Cleary Gottlieb Steen & Hamilton (Washington)

Leah Brannon

Cleary Gottlieb Steen & Hamilton (Washington)
Lawyer (Partner)

Leah Brannon is a partner at Cleary Gottlieb Steen & Hamilton LLP (Washington, D.C). Ms. Brannon’s practice focuses on antitrust matters, including mergers and litigation, and appellate litigation. Ms. Brannon’s work has involved cases in both federal and state courts, and she has advised clients in investigations by the Department of Justice, the Federal Trade Commission, state agencies, and the European Commission. Her recent experience includes representing Google Inc. in connection with the enforcement of the consent decree in United States v. Microsoft. She represented PeopleSoft Inc. in its $10 billion acquisition by Oracle Corporation and related litigation, and Maytag Corporation in its $2.7 billion acquisition by Whirlpool Corporation. She also defended Otis Elevator Company and United Technologies Corporation against a purported antitrust class action, which involved a successful motion to dismiss all claims that was subsequently affirmed on all counts by the U.S. Court of Appeals for the Second Circuit. Ms. Brannon is distinguished as one of the leading antitrust lawyers by Chambers USA, U.S. Legal 500 and Washingtonian magazine. In addition, in 2011 she was selected as one of The American Lawyer’s "45 Under 45" best young women lawyers, and in 2010 she was named a "future star" by Benchmark Litigation : The Definitive Guide to America’s Leading Litigation Firms and Attorneys, and one of Law360’s ten "rising stars" in antitrust law.


Auteurs associés

Cleary Gottlieb Steen & Hamilton (Milano)
Cleary Gottlieb Steen & Hamilton (Hong Kong)
Cleary Gottlieb Steen & Hamilton (London)
Cleary Gottlieb Steen & Hamilton (Washington)
Cleary Gottlieb Steen & Hamilton (Brussels)


6777 Bulletin

Leah Brannon, Brian Byrne, Jeremy J. Calsyn, George S. Cary, Alexis Collins The US State of New York Senate adopts the Twenty-First Century Antitrust Act to amend its state antitrust law


The New York state Senate has passed the “Twenty-First Century Antitrust Act” (S. 933) to amend its state antitrust law, radically changing the risks of doing business in New York. It ostensibly aims at so-called “Big Tech,” but applies to all businesses, even those having very little contact with (...)

Leah Brannon, Brian R. Byrne, Jeremy J. Calsyn, George S. Cary, Alexis Collins, Daniel P. Culley, Elaine Ewing, David I. Gelfand, Bruce Hoffman, Mark W. Nelson, Kenneth Reinker The US FTC issues commentary on vertical merger enforcement explaining the approach to assessing the competitive effects of vertical mergers


On December 22, 2020, the US Federal Trade Commission (the “FTC”) issued a Commentary on Vertical Merger Enforcement. This follows the recent issuance of revised Vertical Merger Guidelines published jointly by the FTC and Department of Justice (the “Agencies”) on June 30, 2020. While the Guidelines (...)

George S. Cary, Maurits J. F. M. Dolmans, Bruce Hoffman, Thomas Graf, Leah Brannon, Richard Pepper, Henry Mostyn, Alexis R. B. Lazda, Savannah Haynes, Kristi Georgieva, Jan Przerwa Exploitative abuses, price gouging & COVID-19 : The cases pursued by EU and national competition authorities


The COVID-19 pandemic has led to extreme demand and price volatility for certain products, as well as fluctuations in firms’ costs. As firms struggle to manage these changes, agencies are aggressively seeking to show they are preventing consumer exploitation—for example, as a result of (...)

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