Agere was a common term in ancient Rome used by judges in a court of conviction or punishment. With the Agere, the judges spoke to those present with due solemnity, exposing all the actions, intentions and claims that they proposed to carry out. From this time, an awareness of what would be the structure with which the legal norm and its administration would be handled in all generations was already based on the principles of law.

The term Agere acquired a certain versatility when it became more of an explanatory procedure for sentences and why they were carried out. The use of Agere was also manifested later not only among judges, but also among lawyers and representatives of people who wanted compliance with it, hence it could be said that Agere can mean Litigation.

In a trial, the actors that participate in the case must present all their intentions, the defense protects the person involved with their arguments, the counterpart exposes all the reasons for which he is accused and the judge with his respective court that in summary collects all the evidence and statements and issues its final or partial verdict. All this compendium of manifestations that arise in a judicial process and that serve as a public and notorious justification are known as Agere. At present it is no longer known as Agere, more is known of litigation processes in a trial, but both this and many terms of Roman law have been replaced by their Anglo-Saxon or Spanish variants.