After papers are delivered to the other side, proof of this must be given to the court. Interrogatories are a discovery tool (among many) used in lawsuits in New York courts.In sum, these are written questions seeking specific information. Service of interrogatories. After commencement of an action, any party may serve written interrogatories upon any other party. Use the form with the boxes to guide you through filling out the blank form. The Allegheny County Civil Division Local Rules were last updated, and amended on November 13, 2023. Allegany County does NOT have E-Filing and does NOT participate in the Electronic Document Delivery System (EDDS). Allegany County does NOT have E-Filing and does NOT participate in the Electronic Document Delivery System (EDDS). Are Interrogatories Just Regular Questions?