Cadwalader, Wickersham & Taft has recruited the chair of the antitrust practice at Fried, Frank, Harris, Shriver & Jacobson.

Charles “Rick” Rule, who will chair Cadwalader’s antitrust practice out of the firm’s Washington, D.C., office, headed the U.S. Department of Justice’s antitrust division under President Reagan and was one of the top lawyers for Microsoft Corp. in its 1990s antitrust battle with the government.