In what is part grudge match, part national crusade, New London’s Robert I. Reardon is now cleared to sue Allstate Insurance Co. for fraud as well as bad faith, in its “Do-I-Need-an-Attorney?” campaign. It’s a fight he’s taken to the Legislature, the state insurance department and the attorney general. Now it’s a federal case.

Reardon, a former president of the Connecticut Trial Lawyers Association, is suing the Northbrook, Ill., insurance giant on behalf of injured people with claims against Allstate who say they were discouraged from retaining counsel.