Discovery is a legal tool each party can use to strengthen their case. Through discovery you may receive new information and documents.Request You may ask the opposing party to produce documents, other tangible things, and electronically stored information ("ESI"). The purpose of discovery is to obtain the information necessary to prove your case or defend against the claims being made against you. "Discovery" refers to the process of getting information from another party (Plaintiff or Defendant) in a court case. The motion argues that under Brady v. Maryland, the prosecution has an obligation to disclose any exculpatory or impeachment evidence to the defense. Discovery is an opportunity for parties to a case to obtain information about each other, such as pay stubs to verify income in a child support case. Discovery requesting the identification of that person. 5. Interrogatories are one form of discovery in a lawsuit.