Donald Klawiter and Jennifer Driscoll-Chippendale have left Mayer Brown and joined the antitrust practice at Sheppard Mullin. Klawiter, who has also worked for the Justice Department’s antitrust division, will chair the firms east coast antitrust group.

Mayer Brown is an international law firm with 21 offices and 1800 attorneys. They specialize in commercial transactions and litigation.