The complaint arrives styled as a class action, and the number at the bottom of the page is built to frighten you. A single fee, a single line in a form contract, or a single advertisement, multiplied across every customer you have served for years, until the demand looks large enough to swallow the company. The plaintiff’s lawyer wants you to see that number and reach for the checkbook before anyone asks the harder question. Can this case be a class action at all?
Most consumer fraud class actions are won or lost at class certification, the stage where the court decides whether one named plaintiff may sue on behalf of thousands. Illinois law gives a defendant real tools to defeat certification, and the strongest of them rests on one idea. A consumer fraud claim requires that each plaintiff was actually deceived, and deception rarely reaches thousands of people the same way.
Chicago Business Litigation Lawyer Blog

