A party to a lawsuit generally uses interrogatories to obtain information in discovery from another party to the lawsuit. This Toolkit provides resources containing sample interrogatories and related guidance to use when litigating common law claims for breach of contract, breach of fiduciary duty, defamation, fraud, product liability, and tortious interference in commercial litigation. It also provides resources to assist counsel with interrogatories in post-judgment enforcement proceedings and voidable transactions cases.

For resources on interrogatories relating to federal law claims, such as those under the Sherman Act, 42 U.S.C. §1983, the Hatch-Waxman Act, the Fair Labor Standards Act, and the Securities Exchange Act of 1934, see Interrogatories Toolkit (Federal).