This article analyzes the uses and the diffusion of the writing between the notarial group during the last medieval centuries. The study is based on the notarial documentation and its analysis, which referring data to the morphology of the gothic writing are come off. This is called described as notular to also be in favor into the hands of the notaries and of their peculiar character of writing used for the extension of notes in the notarial registries. In addition it presents/displays all the own characteristics of the catalan, own gothic writing of these last medieval centuries.