Barberis v. Retirement Plan for Employees of S.C. Johnson & Son, Inc.

Whether, under the applicable federal discovery rule, a plaintiff "s cause of action accrues, and the limitations period begins to run, when " (1) the plaintiff knew or should have known of his or her injury; (2) the plaintiff knew or should have known of the conduct constituting the violation; (3) the plaintiff knew or should have known of a factual basis of all elements of his or her claim; or (4) the plaintiff knew or should have known of some other circumstance or combination of circumstances.