One of the most serious issues in the Italian legal system concerns the need to guarantee certainty and uniform interpretation of law. The essential purpose of the Court of Cassation in Italy (and, for example, also in France) is to unify the case-law and ensure that the interpretation of texts is the same throughout the whole territory. Legal clarity and certainty contribute to avoiding litigation in an excessive number of cases and guaranteeing the principle of equality. Recently, however, the huge increase in the volume of litigation points out that the Italian legal system does not offer enough legal permanence and certainty. For this reason, the Italian legislator chose to strengthen the nomophylactic function of the Court of Cassation by instating the principle of law in the interest of law (art. 363 of Code of Civil Procedure).