A brief is a written legal document filed in a litigation or arbitration dispute resolution proceeding in which a party to the dispute recites the facts and the law applicable to the dispute and explains to the court or arbitrator why the party should prevail in the dispute. Courts often have rules regarding the page limits and format for briefs, as well as the method for filing briefs (usually electronically) and delivery of a copies to other parties to the litigation.

In Oklahoma, a brief is a formal document submitted to a court by a party involved in litigation or arbitration. This document presents the facts of the case, the relevant law, and arguments supporting the party's position. Oklahoma courts have specific rules regarding the preparation and submission of briefs, which include guidelines on page limits, formatting, and the timing of submissions. These rules can be found in the Oklahoma Rules of Civil Procedure for state courts or the local rules for federal courts, such as the United States District Court for the Western, Northern, and Eastern Districts of Oklahoma. Additionally, briefs are typically filed electronically through the Oklahoma State Courts Network (OSCN) or the federal court's electronic filing system (PACER). Parties are also required to serve copies of their briefs on all other parties involved in the litigation. It is important for parties to adhere to these rules to ensure that their briefs are accepted by the court and considered in the decision-making process.