HOWARD J. TRIENENS is a partner of Sidley and former chair of Sidley’s Executive Committee. His practice is primarily corporate and litigation...
HOWARD J. TRIENENS is a partner of Sidley and former chair of Sidley’s Executive Committee. His practice is primarily corporate and litigation before courts and administrative agencies in antitrust, regulatory and other matters.
He joined the firm as an associate in 1949. From 1950-52, he served as law clerk to Chief Justice Vinson of the Supreme Court of the United States. He returned to the firm in 1952 and has been a partner since 1956. Mr. Trienens also became Vice President and General Counsel of AT&T in 1980 and retired as Senior Vice President and General Counsel in 1986. In announcing his retirement, AT&T stated that Mr. Trienens had played “a key role in disposing of antitrust litigation that developed in the wake of government policies that introduced competition into the telecommunications industry. He also was deeply involved in the restructuring of the Bell System and AT&T following the settlement of the Department of Justice suit.” Mr. Trienens has served as a Director of R. R. Donnelley & Sons Co. and G. D. Searle & Co., and was Counsel to Northwest Industries and Lone Star Technologies, Inc.
Northwestern School of Law, J.D., 1949
Northwestern University, B.S., 1945