Ropes & Gray LLP works across litigation, merger control, investigations, and strategic advisory matters. Mark Popofsky chairs the practice out of Washington, DC and brings first-chair trial experience, including roles in consequential antitrust cases. Also in DC, Jonathan Klarfeld is a litigator with experience handling civil litigation and investigations before US enforcement agencies. Based in Boston, Matthew McGinnis is a trial lawyer known for navigating commercial and antitrust disputes for sophisticated clients across regulated industries. Jane Willis, who operates in Boston and New York, is known for her judgment in merger reviews, investigations, and class action litigation in the healthcare and life sciences sectors.
Legal 500 Editorial commentary
Accolades
Client satisfaction: Lawyer & team quality
Key clients
- Google Inc.
- Nippon Steel
- Welsh Carson Anderson & Stowe
- Johns Hopkins University
- University of Rochester
- JenaValve Technology, Inc.
- Advocate Aurora Health Inc.
- State Street Bank and Trust Company
- The Blackstone Group Inc.
- Sonesta International Hotels Corporation
- Musixmatch SpA
- Zelis Healthcare LLC
Work highlights
Served as trial counsel in the DOJ’s civil antitrust case against Google. The so-called “Search Litigation” is widely acknowledged to be modeled on the U.S. v. Microsoft Corp. case from 25 years ago.
Represented Nippon Steel in antitrust litigation relating to the $14.9 billion merger between Nippon and U.S. Steel, one of the most important and challenging M&A transactions in recent American history both in an offensive antitrust case for conspiracy to monopolize, and in successfully defending the transaction against a consumer class action that sought to block its closing.
Representing numerous clients with respect to algorithmic pricing, an area in which government antitrust enforcers and plaintiffs’ class action lawyers are increasingly focusing their attention.
Practice head
Jonathan Klarfeld; Mark Popofsky
Other key lawyers
Samer Musallam; Matthew McGinnis; Jane Willis