Discovery is the factfinding process in civil litigation in which the parties to a lawsuit exchange requests for the production of documents and other tangible items (requests for production); written questions to be answered under oath (interrogatories); witness testimony to be provided by oral deposition; disclosures that may be required under the applicable rules without request from an opposing party; and requests or subpoenas to third-parties (who are not parties to the lawsuit) for the production of documents or tangible things, or the giving of testimony by oral deposition, for example.

The discovery process is one of the most important, time-consuming, and often expensive parts of civil litigation. The discovery process—including the scope of discovery requests, deadlines to respond, and privileges from responding—are usually governed by the state or jurisdiction’s rules of civil procedure or code of civil procedure. For example, in federal court discovery is governed by the Federal Rules of Civil Procedure.

In Arizona, the discovery process in civil litigation is governed by the Arizona Rules of Civil Procedure. These rules outline the methods and scope of discovery, including requests for production of documents, interrogatories, depositions, and required disclosures. Parties may request information that is relevant to the case and not privileged. The process is designed to ensure that both sides have access to the necessary information to prepare their cases, but it must be conducted within the boundaries set by the rules to prevent abuse. Discovery can be extensive and complex, often involving deadlines for responses and the potential for disputes over the scope of requests. In cases where federal law is applicable, the Federal Rules of Civil Procedure may govern the discovery process. It is important for parties involved in litigation to understand these rules or consult with an attorney to navigate the discovery process effectively.