A brief (Old French from Latin "brevis", short) is a written legal document used in various legal adversarial systems that is presented to a court arguing why one party to a particular case should prevail.

In England and Wales (and other Commonwealth countries, e.g., Australia) the phrase refers to the papers given to a barrister when they are instructed.

In the United States, the word differs in meaning from its English counterpart because attorneys in the United States exercise all the functions distributed in England between barristers and solicitors. A lawyer sometimes prepares for his own use what is called a "trial brief" for use at the trial. This corresponds in all essential particulars with the "brief" prepared by the solicitor in England for the use of counsel.

But the more distinctive use of the term in America is in the case of the brief "in error or appeal," before an appellate court. This is a written or printed document, varying according to circumstances, but embodying the argument on the question affected. Most of the appellate courts require the filing of printed briefs for the use of the court and opposing counsel at a time designated for each side before hearing. In the rules of the United States Supreme Court and circuit courts of appeals the brief is required to contain a concise statement of the case, a specification of errors relied on, including the substance of evidence, the admission or rejection of which is to be reviewed, or any extract from a charge excepted to, and an argument exhibiting clearly the points of law or fact to be discussed. This form of brief, it may be added, is also adopted for use at the trial in certain states of the Union which require printed briefs to be delivered to the court.

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Note added at 18 hrs (2022-07-21 14:09:44 GMT)
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Baumann Avocats Droit informatique
Un "mémoire" est un document écrit, adressé à une autorité, voire à une juridiction, pour exposer une situation généralement conflictuelle et faire valoir des moyens juridiques destinés à l'obtention d'un droit ou d'un avantage en relation avec la situation qui y a été exposée.

Mémoire - Définition - Dictionnaire juridique
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