Combined Network, Inc., an Illinois Corporation v. The Equitable Life Assurance Society of the United States, a New York Corporation

CUMMINGS, Circuit Judge.

Plaintiff Combined Network, Inc. (Combined) is an Illinois corporation. Defendant, The Equitable Life Assurance Society of the United States (Equitable), is a New York corporation. For the time period relevant here Equitable owned Gateway III, an office building at 222 South Riverside Plaza in Chicago, Illinois. Tishman Midwest Management Corporation (Tishman) was Equitable’s leasing and managing agent pursuant to a written management agreement. Tishman handled all tenant negotiations for Equitable. In December 1981, Combined sought new office space through Berger…