Learn more about interrogatories, what to do if you are the responding party, what you can object to, and how much time you have to answer. Interrogatories are a helpful tool for discovery.Interrogatories are written questions which focus on any information relevant to the case. The main discovery devices are "interrogatories, depositions, requests for admissions, and requests for production. Interrogatories may inquire about any matter within the scope of discovery except matters regarding testifying expert witnesses. Tex. Some claims can be filed in a small claims court, which is designed for people without formal training in the law. Discovery is commonly used in cases filed in the county and district courts. It is far less common in justice court. A magistrate will also ensure that reasonable assistance is provided to the accused in completing forms necessary to request counsel. This Note also addresses when to file interrogatories and serving interrogatories.