The first District Court of Appeals decided an interesting case about stacking as applies to uninsured and underinsured policies. In Allstate vs Trujillo 2014 Il.App (1st) 123419, the court decided that parties can stack there underinsured (UDIM) policies.
Allstate filed suit for declaratory judgment against plaintiff. The plaintiff was a passenger in a car insured by a person named Delgado. Delgado had a liability policy through Allstate which had limits of $100,000 per person, and $300,000 per accident. The same policy had $100,000 in UDIM coverage. The other driver had a $20,000 policy with American Access insurance. American Access tendered their $20,000 policy. Allstate tendered their $100,000 in liability coverage. Plaintiff took the position that Allstate also owed another $80,000 in UDIM coverage. Allstate claimed that under the policy there is no stacking.