Abstract
As part of the innovative proposals implemented with the entry into force of the Law 906/04 through which the application of the accusatory criminal system in our country began, there is the establishment of Agreements and Negotiations, aimed at developing one of the objectives outlined as early as the constitutional reform, which is alleviating the congestion of criminal matters. Throughout its implementation since 2005, it has been the Criminal Cassation Chamber of the Supreme Court of Justice alongside the decisions of the Constitutional Court that have marked the paths to be followed by judicial officials in order to carry out an effective adaptation of this procedural tool in our legal culture. This paper examines the scope of these developments.