A party may use one or more interrogatories which are part of a form set of interrogatories. A party may direct written interrogatories to any other party.A copy of the interrogatories shall be served on all other parties entitled to notice. Download and complete Motion and Notice forms from the Illinois Office of the Courts. A sample set of interrogatories for Illinois circuit court litigation. This Standard Document has integrated notes with important explanations. Instructionsâ–¾. In 1, enter your name and the date you served the occupants. In 2, check the box that states how you delivered the Demand or Notice. Service FBO facility at the airport that is not involved in the transaction.