Ropes & Gray LLP

Ropes & Gray LLP’s Antitrust & Competition practice is noted for its expertise in high-stakes litigation, regulatory investigations, and complex merger reviews. The Washington DC–based practice is led by Jonathan Klarfeld, Mark Popofsky, and Samer Musallam, each bringing deep government and private-sector experience. Musallam, a former DOJ Antitrust Division prosecutor, and Boston-based Jane Willis, a veteran of antitrust investigations, have spearheaded landmark matters. The team serves clients including The Blackstone Group, Johns Hopkins University, the University of Rochester, Advocate Aurora Health, and Glencore International. Notable wins include algorithmic pricing litigation for Blackstone and financial aid antitrust defense for Johns Hopkins and Rochester.