"She is one of the reasons we hold the firm in such high regard." 

Chambers Global 2017

“An excellent lawyer, providing very logical advice. I trust anything she says."

Chambers Global 2016

 

Marguerite M. Sullivan

Washington, D.C.
  • 555 Eleventh Street, NW
  • Suite 1000
  • Washington, D.C. 20004-1304
  • USA
 
 

Maggy Sullivan is a partner in the Litigation & Trial Department of Latham & Watkins and is a member of the firm’s Antitrust & Competition Practice, the Finance Committee and the Strategic Client Committee. She has extensive experience in both private and government antitrust matters, and has defended corporate clients in cartel investigations, complex civil actions, multi-district actions and class actions.

Ms. Sullivan focuses on antitrust class actions and business to business litigation in state and federal courts, criminal cartel investigations and antitrust compliance counseling. She has been involved in some of the largest and most complex antitrust matters to date.

Ms. Sullivan’s antitrust work has covered a wide range of industries, including consumer products, healthcare, automotive, software and technology, construction materials, specialty chemicals, textiles, medical dictation, paper, cable and satellite.    

Ms. Sullivan recently received Global Competition Review’s 2017 award for Cartel Defense Civil Litigation of the Year for her work resolving multiple class action claims against global auto parts suppliers. She is recommended for her cartel defense practice by Legal 500 US, and was named a Washington D.C. Super Lawyer in 2017. Before returning to Washington this past January, Ms. Sullivan spent two years practicing in Brussels, where she was listed in Chambers 2016 and 2017 as one of the leading antitrust and competition lawyers in Brussels and recognized for her private antitrust litigation expertise and her extensive experience acting before the US Department of Justice. In 2012, Ms. Sullivan was recognized as a "Rising Star in Litigation" at Euromoney’s inaugural America's Women in Business Law awards.

Thought Leadership

A selection of Ms. Sullivan's publications includes:

  • “Class Action Defendants Likely to Benefit if House Bill Becomes Law,” Client Alert, March 15, 2017
  • "Your Stipulated Protective Order May Not Provide As Much Protection As You Expect,” Client Alert, October 20, 2016
  • "Class/Collective Actions in Europe: Overview of Applicable EU Law Principles”; chapter within the book “Class Actions – A Global Guide from Practical Law,” 2015
  • "Resale Pricing Issues," Antitrust Law and Economics of Production Distribution, ABA Antitrust Section, 2013
  • "Three Years After Credit Suisse v. Billing: Courts Still Find The Implied Immunity Doctrine Plainly Repugnant," Antitrust Practitioner, Vol. 7, October 7, 2010
  • "Breaking New Ground: Direct Settlement of EC Cartel Cases," Global Competition Review, 2008

Her recent speaking engagements include:

  • ABA Fall Forum Panel on Litigating State Regulation of Disruptive Technologies, Washington, D.C., November 2016
  • Private Antitrust Litigation: Europe vs. United States – A Comparative Discussion Providing Practical Advice for A Successful Global Defense Strategy, Latham & Watkins Seminar, Tokyo, Japan, March, 2016
  • "Tackling the Varying Uses of Privilege during Multijurisdictional Investigations: Developing a Strategy that will Allow you to Protect Corporate Documents", C5 Global Investigations Europe conference in Berlin, Germany, 2012

Ms. Sullivan’s successes include obtaining amnesty for a major industrial client in multiple jurisdictions around the world, obtaining dismissal of boycott claims against a table saw manufacturer based on insufficient allegations of conspiracy and obtaining dismissal of price fixing claims against a Japanese auto parts supplier on jurisdictional grounds.

She currently represents auto parts manufacturers in multi-district class action litigation that resulted from the Department of Justice’s largest-ever criminal investigation.

Examples of other multidistrict class actions include:

  • In re Automotive Parts Antitrust Litigation
  • In re Aftermarket Filters Antitrust Litigation
  • In re Baby Products Antitrust Litigation
  • In re Pressure Sensitive Labelstock Antitrust Litigation
  • In re Polyester Staple Antitrust Litigation    
 
 
 
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