Italian legal system is a civil law system: as a consequence, stare decisis doctrine does not apply in Italy.
However, it is well known that civil and common law systems have become closer to each other during the last decades. On the one hand, from the point of view of common law systems, due to the increasing body of statutory law; on the other hand, from the point of view of civil law systems, because of the increasingly important role played by jurisprudential precedents (on this topic, see the interesting book edited by MacCormick and Summers, Interpreting precedents: a comparative study, also containing papers by the Italian learned scholar Michele Taruffo).
In this perspective, it is worth reading a recent decision of the Italian Supreme Court (Third Civil Chamber, decision No. 24649 of 3 October 2019, Italian text available here). Despite this decision does not concern arbitration matters, I found it very interesting and for this reason, I would like to briefly comment it.