BREVIA FORMATA, Eng law. The collection of writs found in the Registrum Brevium was so called. The author of Fleta says, these writs were formed upon their cases. They were different from the writs de cursu, which were approved by the council of the whole realm, and could not be changed without the will of the same. Fleta, lib. 2, c. 13, §2. See 17 S. & R. 194-5, and authorities there cited.