As antitrust enforcers step up scrutiny of emerging industries, California-based professional services firm Manatt, Phelps & Phillips brought in one of Cozen O’Connor’s antitrust co-chairs.

Partner David Reichenberg—who has represented Caesars Entertainment Corp., Arista Networks, Netflix and Universal Surveillance Systems in disputes with government officials and other companies—joined the West Coast firm’s New York office on March 31.