Marcus S. Topel has extensive litigation experience in white-collar criminal defense and complex civil and corporate litigation. Mark has tried more than 120 felony cases before juries during his career.

Mark A. Berthiaume focuses his practice in the representation of clients in white collar criminal matters, government investigations, and complex civil litigation, including the defense of class actions.

Mark Ford concentrates his practice in antitrust litigation, representing clients across a variety of industries in private litigation and in responding to government antitrust investigations.

Mark A. Racanelli is partner in O’Melveny’s New York office and a member of the White Collar Defense and Corporate Investigations Practice. Mark has extensive experience counseling clients in and litigating white collar, regulatory.

Mr. Robertson is a partner in the New York office. He was resident in the Houston office for 12 years before moving to New York. Mr. Robertson practices in the area of business litigation including antitrust, contract litigation, consumer protection.

Mark Waddell has practiced in the areas of intellectual property and technology for more than 25 years. He litigates pharmaceutical and chemical patent disputes, with particular focus on Hatch-Waxman issues and ITC proceedings.

Mark L. Krotoski represents and advises clients on antitrust cartel investigations; cybersecurity and privacy matters; trade secret, economic espionage, fraud, and foreign corrupt practices cases; and government investigations.

Mark L. Mattioli provides regulatory, transactional and compliance guidance to hospitals, physicians and other health care providers in a variety of areas, including antitrust, health care reform, managed care contracting, reimbursement, fraud.