Where the established law of the case is fatal to the plaintiffs’ theory of the case, the court may properly grant summary judgment in favor of the defendant.The 1st District Appellate Court affirmed the decision of Cook County Circuit Judge Neil H. Cohen.The plaintiffs in this care are 337 participants in four pension funds for employees of the City of Chicago (City). Prior to 1987, the city provided retirees with fixed-rate healthcare subsidies, but in 1987 it announced that it was stopping the subsidies. Litigation …