Form 13 — Initial Streamlined Request for Extension of Time to File Brief is a form used by litigants in the United States federal appellate court system when they need additional time to file a brief. The form allows litigants to quickly and easily request an extension of time to file their brief, without having to provide a detailed explanation of why they need the extension. The form includes fields to enter the litigant’s name, the court’s name, the case number, the date the brief is due, and the number of additional days requested. The litigant must also sign and date the form. There are two types of Form 13 — Initial Streamlined Request for Extension of Time to File Brief. The first type is for litigants who are seeking an extension greater than 14 days. The second type is for litigants seeking an extension of 14 days or fewer.