O'Melveny

O'Melveny advises on matters across civil and criminal litigation, merger control, government investigations, and international competition law. The team is active in class actions, regulatory reviews, and transactional counseling across multiple sectors. Courtney Dyer, co-chair, focuses on global antitrust strategy, advising clients on merger-control matters and transactional and conduct risk across industries. Michael Tubach, also co-chair and based in San Francisco, represents companies and individuals in internal and DOJ investigations, and has led numerous class actions. Ian Simmons acts as lead counsel in multi-district antitrust proceedings, including precedent-setting cases and matters involving intellectual property and patents. Ben Bradshaw litigates cases across financial services, healthcare, aviation, and consumer electronics, including class actions and international cartel investigations. Sergei Zaslavsky combines trial experience with regulatory and merger review work, including matters involving emerging technologies and AI. Julia Schiller advises on merger enforcement, litigation, and antitrust investigations, bringing experience in both government and private practice. Together the team manages antitrust matters across a range of different contexts. All lawyers mentioned are based in Washington, DC unless otherwise stated.