1. The full name and complete last known address of every witness to the occurrence complained of. Local rules shall not require the filing of discovery.Any party serving discovery shall file a certificate of service of discovery document. The discovery process is the investigation phase that follows the filing of divorce or allocation of parental responsibilities. Discovery is used to gather information from another party in your case. Learn how and when to use it. All forms below with a "fillable icon" are documents that you can open "on-line", fill in the appropriate fields and then print on your printer. It can be tricky to navigate the vast Cook County court system. The Chicago litigation attorneys at Smoler Law can help. In the midst of a divorce, a spouse is not likely to tender necessary evidence to their soontobeex just because you asked nicely.