Katherine Rocco is Co-Chair of Latham’s New York Litigation & Trial Department and is a partner in the firm’s Global Antitrust & Competition Practice.

Ms. Rocco regularly leads clients through their most complex antitrust matters, including by securing clearances from the Department of Justice (DOJ) and the Federal Trade Commission (FTC) for high-stakes mergers, and defending companies in a wide range of antitrust litigations, investigations, and cartel matters. Over the last thirteen years, Ms. Rocco has advised private and public companies on more than 200 individual antitrust matters. She has litigated multiple matters through trial and appeal, and appeared before numerous agencies including the European Commission. Ms. Rocco’s broad industry experience spans semiconductors, consumer products, life sciences, entertainment, social media, healthcare, financial services, agriculture, and technology.

Ms. Rocco is routinely recognized as a leading practitioner in antitrust, including by Chambers, Global Competition Review, Lawdragon, The Legal 500, Super Lawyers, and Who’s Who Legal. Ms. Rocco is a guest lecturer at Fordham Law School and is a Member of the Board for the Legal Aid Society’s New Leadership Program. For nearly a decade, Ms. Rocco served in the leadership and as a member of the Civil Rights Committee of the New York City Bar Association, including by serving as an independent legal observer at the Guantanamo Bay military tribunals in Cuba in 2012 and 2014, and by preparing amicus briefs for the Supreme Court of the United States on issues like warrantless wiretapping. 

Prior to joining Latham, Ms. Rocco was an antitrust partner at another leading law firm. During law school, she was an editor for the Fordham Law Review and interned for Judge Shira A. Scheindlin of the US District Court for the Southern District of New York. She was the recipient of a Fulbright Scholarship in 2005 (Malaysia) and served as an intern in The White House in 2002.

A selection of Ms. Rocco’s matters include representing:

  • Akorn Pharmaceuticals against price-fixing allegations
  • Akzo Nobel on its successful defense of PPG Industries’ unsolicited US$28 billion takeover attempt
  • Alarm.com on its acquisition of iConnect
  • American Express:
    • In its litigation against the DOJ’s anti-steering claims in Ohio v. American Express and related matters including Italian Colors
    • At trial and on appeal against price-fixing allegations in Ross v. American Express
  • Apollo on a confidential transaction
  • Ares and National Veterinary Associates (NVA) on NVA’s sale to JAB and Compassion First
  • Ares:
    • In the acquisition of Unified Women’s Health and related strategic transactions
    • In multiple confidential transactions and related matters
  • Avaya Holdings on its strategic partnership with RingCentral and subsequent matters
  • Blackstone and Alight on the acquisition of assets from Aon
  • Blackstone and Alight on confidential transactions and antitrust matters
  • Blackstone and Service King on confidential transactions
  • British American Tobacco on Reynolds’ acquisition of Lorrilard
  • Butterfly Equity on the sale of Orgain to Nestle
  • Cambrex on its US$2.4 billion agreement to be acquired by Permira
  • The Carlyle Group on its acquisition of Arctic Glacier and subsequent matters
  • Charter Communications on confidential antitrust matters
  • Endeavor Group on confidential transactions in sports and media
  • Equity One on its US$15.6 billion merger with Regency Centers
  • Francisco Partners and its portfolio company RedSail Technologies on the acquisition of PioneerRx
  • Francisco Partners:
    • In the merger of Payscale with Payfactors
    • In its US$3.4 billion acquisition of Verifone and associated strategic transactions
  • A hedge fund client on a confidential DOJ investigation relating to price-fixing allegations
  • Hitachi in a theft of trade secrets litigation
  • Huntsman on its US$2.1 billion sale of its chemical intermediates and surfactants businesses to Indorama Ventures
  • IntelSat in its acquisition of GoGo Wireless
  • KKR on its acquisition of Optiv
  • Life Technologies on its acquisition by Thermo Fisher Scientific
  • Madison Dearborn Partners on the sale of Topps Trading Cards to Fanatics
  • Marriott Vacations Worldwide on its US$4.7 billion acquisition of ILG
  • Media Rights Capital (MRC) on its joint venture with Penske Media
  • Meta (f/k/a Facebook) on a confidential matter
  • Olympus Advisors and AmSpec on antitrust and other matters
  • Olympus Advisors on its sale of Ritedose to Humanwell Healthcare and AGIC Capital
  • Olympus Partners and Liqui-Box on the US$585 million acquisition of DS Smith’s plastics division and related litigation
  • Oracle on a confidential matter
  • The Orchard — a film, TV, and music distribution company — on antitrust and other matters
  • Pamplona Capital and nThrive on the acquisition of Adreima
  • Pamplona Capital Management on its US$5 billion acquisition of PAREXEL International
  • A private equity client in a DOJ leniency application in a cartel matter
  • Qualcomm:
    • In its litigation against Broadcom
    • Against a complaint by Nvidia & Icera in the EU
    • On various FRAND and RAND matters
    • In multiple antitrust investigations, litigations and strategic transactions
  • Scientific Games on its acquisition of Bally Technologies
  • Silver Lake Partners and Oak View Group on their acquisition of Spectra
  • Starwood Capital Group on the sale of Mammoth Resorts to Aspen Skiing Company and KSL Capital Partners
  • Starwood Capital Group on its US$6 billion joint acquisition with Blackstone of Extended Stay America
  • Unilever on its:
    • Acquisition of Talenti
    • Sale of SlimFast
  • United Airlines in its merger with Continental Airlines
  • VWR on its US$6.4 billion sale to Avantor
  • Wynn Casinos & Resorts in a confidential antitrust matter

The experience listed above includes matters handled prior to joining Latham 

Bar Qualification

  • New York


  • JD, Fordham University School of Law, 2009
    magna cum laude
  • BA, George Washington University, 2005
    magna cum laude