Leah Brannon


T: +1 202 974 1508
F: +1 202 974 1999

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Leah Brannon is a partner based in the Washington, D.C. office.

Ms. Brannon’s practice focuses on antitrust matters, including litigation, mergers, and government investigations. 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.

Ms. Brannon’s selected antitrust litigation matters include representing Keurig Green Mountain, Sanofi U.S. and Gilead Sciences in defense of monopolization and unfair competition claims; Teladoc as a plaintiff in an antitrust suit against the Texas Medical Board; and Whirlpool, Asahi Glass, HSBC, and others in various class action proceedings alleging antitrust violations. Her merger control experience includes representing Google in its acquisition (and subsequent sale) of Motorola Mobility, as well as its acquisitions of AdMob, DoubleClick, and YouTube; The Coca-Cola Company in its acquisition of an equity stake in Monster Beverage; and IMS Health in its acquisitions of SDI Health and of certain Cegedim businesses.

Ms. Brannon is distinguished as one of the leading antitrust lawyers by Chambers USA, The Legal 500 U.S., Benchmark Litigation: The Definitive Guide to America's Leading Litigation Firms and Attorneys, The Best Lawyers in America, Global Competition Review’s International Who's Who of Competition Lawyers and Washingtonian magazine. In addition, the Global Competition Review named Ms. Brannon “Lawyer of the Year-40 and Under” in 2013, and recognized her among the most talented competition lawyers in their "40 Under 40" 2012 survey. In 2011 she was selected as one of The American Lawyer’s "45 Under 45" best young women lawyers across all practice areas, and in 2010 she was named one of Law360’s ten "rising stars" in antitrust law.

Ms. Brannon has taught antitrust as a teaching fellow at Harvard University and as an adjunct professor at Georgetown University. She is currently a Senior Editor for the Antitrust Law Journal.

Ms. Brannon joined the firm in 2003 and became a partner in 2008. She received a J.D. degree, magna cum laude, from Harvard Law School in 1999 and a B.A. with highest distinction from the University of Virginia in 1995. From 1996-1997, Ms. Brannon was a Fulbright Scholar in Egypt. From 2000-2001, she served as a law clerk to Chief Judge Douglas H. Ginsburg of the U.S. Court of Appeals for the District of Columbia Circuit, and from 2002-2003 she served as law clerk to Chief Justice William H. Rehnquist of the Supreme Court of the United States.

Honors and Distinctions

Chambers USA - Antitrust.

The American Lawyer - "45 Under 45 Best Young Women Lawyers."

Global Competition Review - "40 Under 40 Most Talented Young Competition Lawyers." 

Benchmark Litigation: The Definitive Guide to America’s Leading Litigation Firms and Attorneys - Future Star.

Law360 - Rising Legal Stars.

The Legal 500 U.S. - Antitrust.

Washingtonian Best Lawyer - Antitrust.

The Best Lawyers in America - Antitrust.

Global Competition Review’s International Who's Who of Competition Lawyers


  • Harvard Law School
    (J.D., 1999)
  • University of Virginia
    (B.A., 1995)

Bar Admissions

Maryland - December 1999
District of Columbia - 2000

Areas of Law