Where an insurance company acted properly in defending a claim until it learned that the claim was outside of policy period, the plaintiff could not prove a theory of equitable estoppel.The 7th U.S. Circuit Court of Appeals affirmed a decision by U.S. District Judge John Z. Lee.In 2002, the Blue Moon Lofts Condominium Association filed a complaint against The Structural Shop Ltd in Illinois state court seeking damages arising out of the defendant’s allegedly defective design and construction of a building.Blue Moon …