Ronan P. Harty
  1. Partner

Mr. Harty, a partner in Davis Polk’s Litigation Department, provides general antitrust counseling to U.S. and non-U.S. companies and represents clients in enforcement agency investigations, domestic and cross-border acquisitions and joint ventures, and litigations.

Work Highlights

  • Gilead Sciences in its $21 billion acquisition of Immunomedics
  • Charles Schwab in its acquisitions of USAA and TD Ameritrade
  • Hoffmann-La Roche in numerous acquisitions, including, most recently, its $4.5 billion acquisition of Spark Therapeutics
  • Ingersoll-Rand in the combination of its Industrial Division with Gardner Denver
  • Ferrero International in various acquisitions, including its acquisition of the Keebler business from Kellogg, and the acquisition of Nestle’s U.S. confectionary business
  • Genuine Parts in the proposed acquisition of its S.P. Richards business with Essendant
  • Services Group of America in its acquisition by U.S. Foods
  • Home Shopping Network in its acquisition by QVC
  • Syngenta in its acquisition by ChemChina
  • Advanced Semiconductor Engineering in its proposed acquisition of Silicon Industries Precision Co.
  • Syngenta in its defense of a takeover proposal by Monsanto
  • Emerson Electric in numerous acquisitions since 1986
  • Citigroup in its sale of its OneMain business to Springleaf
  • Tyson Foods in its acquisition of Hillshire Brands
  • Nippon Express in connection with the Department of Justice's investigation of price-fixing in the freight forwarding business, and subsequent class action litigation 
  • Daiichi Sankyo in its sale of Ranbaxy
  • PricewaterhouseCoopers in its acquisition of Booz & Company
  • BATS Global Markets in its acquisition of Direct Edge
  • Maidenform Brands in its acquisition by Hanesbrands
  • H.J. Heinz in its acquisition by 3G Capital and Berkshire Hathaway
  • ConAgra in its acquisition of Ralcorp
  • Daikin Industries Ltd. in its acquisition of air conditioner manufacturer Goodman Global Inc.
  • National Express in its acquisition of Petermann Inc.
  • VF Corporation in its acquisition of Timberland
  • The Kingdom of Sweden in the sale of Absolut Vodka and other brands to Pernod Ricard
  • Gillette in its acquisition by Procter & Gamble
  • FirstGroup in its acquisition of the school bus services business of Laidlaw
  • CVS in its acquisitions of Eckerd Drugs, Revco, Arbor Drugs and its acquisition of Albertson’s freestanding drug stores


Mr. Harty is consistently recognized for his work in the legal industry:

  • Chambers Global – Competition/Antitrust
  • Chambers USA – Band 1: Antitrust
  • The Legal 500 U.S. – Leading Lawyer; Antitrust: Merger Control
  • Global Competition Review
  • Best Lawyers in America
  • Who’s Who Legal – International; Competition; 2020 Thought Leaders: Competition 
  • The Burton Awards for Legal Achievement – “Distinguished Legal Writing Award,” 2013
  • Antitrust Writing Awards – “Best Academic Mergers Article,” 2013

Of Note

  • Editorial Board Chair, Antitrust Law Developments (Ninth) (Forthcoming), Section of Antitrust Law, American Bar Association
  • Board Member, Legal Services NYC (September 2018 - present)
  • Author, The Guide to Merger Remedies Global Competition Review (2020) (Third Edition)
  • Member, Editorial Board, Matthew Bender’s publication Antitrust Report
  • Former Trustee, Board of Trustees, Packer Collegiate Institute (Chair, 2012-2016)
  • Former Co-Chair, Antitrust Committee, International Bar Association
  • Former Co-Chair, International Committee of the Antitrust Law Section, American Bar Association 
  • Former Editorial Co-Chair, 2002 Annual Review of Antitrust Law Developments, American Bar Association Antitrust Law Section
  • Editorial Co-Chair, 2015 Mergers and Acquisitions: Understanding the Antitrust Issues, American Bar Association Antitrust Law Section
  • Former Co-Chair, International Antitrust Committee of the Section of International Law and Practice, American Bar Association

Professional History

  • Partner, 1994-present
  • Associate, 1986-1994
  • Assistant (Stagiaire) in the cabinet of Sir Leon Brittan, Vice President of the European Commission Responsible for Competition Policy, 1991

Bar Admissions

  • State of New York
  • U.S. District Court, E.D. New York
  • U.S. District Court, S.D. New York


  • B.C.L., University College Dublin, Sutherland School of Law, 1984
    • first-class honours
  • LL.M., University of Michigan Law School, 1986
    • Cook Fellowship for Legal Research