Covington & Burling (Washington)

Kate Mitchell-Tombras

Covington & Burling (Washington)

Kate Mitchell-Tombras is a partner at Covington & Burling, based in the firm’s Washington office. She represents clients in complex antitrust and commercial legal matters, including litigation, government investigations, and mergers and acquisitions. Kate also advises clients on competition issues, such as antitrust compliance, internal investigations, and responding to Second Requests. From 2010-2014, Kate was a trial attorney in the Antitrust Division at the U.S. Department of Justice. While at the Antitrust Division, Kate successfully represented the United States at trial in its challenge of a conspiracy concerning the pricing of e-books and its challenge of a provision in agreements between a credit card network and merchants. Kate also served as chief of staff of the team responsible for the Antitrust Division’s challenge to the merger between U.S. Airways and American Airlines, which ultimately concluded in a settlement. In recognition of her contribution to the e-books and airlines litigations, Kate received the Antitrust Division’s Award of Distinction.

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Covington & Burling (Brussels)
Covington & Burling (London)
Covington & Burling (Brussels)
Covington & Burling (London)
Covington & Burling (Washington)


944 Bulletin

Thomas O. Barnett, James J. O’Connell, James R. Dean, Ryan K. Quillian, Anne Y. Lee, Ross A. Demain, Kavita Pillai, Stacy R. Kobrick, Kate Mitchell-Tombras, Terrell McSweeny The US FTC and DoJ propose sweeping changes to the premerger notification form and associated instructions, as well as to the rules implementing the Hart-Scott-Rodino Act


On June 27, 2023, the U.S. Federal Trade Commission (“FTC”), with the concurrence of the Antitrust Division of the Department of Justice (“DOJ”) (together, “the Agencies”), issued a Notice of Proposed Rulemaking (the “Notice”) that proposes extensive changes to the Hart-Scott-Rodino (“HSR”) (...)

Thomas O. Barnett, Kate Mitchell-Tombras, Daniel Randolph, Lauren S. Willard The US Supreme Court holds that structural constitutional agency challenges can proceed in Federal District Court (Axon / FTC)


The U.S. Supreme Court announced its decision in the consolidated cases of Axon Enterprise, Inc. v. FTC and SEC v. Cochran on Friday, April 14, 2023, holding that “the review schemes in the Exchange Act and FTC Act do not displace district court jurisdiction” over petitioners’ “far-reaching (...)


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