Regulation of Jurisdiction and Precautionary Proceedings: The Court of Cassation with Order no. 10151 of 2025 reiterates inadmissibility

In the complex landscape of Italian civil procedural law, the issue of jurisdiction plays a crucial role, defining the boundaries within which a judge can legitimately decide on a dispute. However, when it comes to precautionary proceedings, the inherently provisional and instrumental nature of these measures raises specific questions about the admissibility of certain procedural tools. The Supreme Court of Cassation, with Order no. 10151 of April 17, 2025, has clarified this point, reiterating a fundamental principle regarding the regulation of jurisdiction.

The Context of the Decision: A Practical Case of ATP and Jurisdiction

The case that led to the intervention of the Court of Cassation originated from a preliminary technical assessment (ATP) proceeding, an essential tool for crystallizing a factual situation before the initiation of a merits judgment. In the specific case, an architect, whose name is abbreviated as T. (S. G.), had initiated an ATP to ascertain defects and problems that emerged during the execution of works commissioned for the conversion of a van into a camper. The opposing party was the client, identified as C. (M. D.).

Within this proceeding, the Court of Trento, with a decision of July 26, 2024, had rejected the exception of territorial incompetence raised, applying the consumer forum principle. Against this decision, an appeal for the regulation of jurisdiction was filed. It is on this point that the Court of Cassation, with President M. B. and Rapporteur R. C., intervened to establish the limits of this procedural tool.

The Ruling of the Court of Cassation and its Foundations

The Court declared the appeal inadmissible, providing a clear and reasoned explanation. The summary of the ruling, which encapsulates the legal principle expressed, deserves to be quoted in full for its importance:

In matters of precautionary proceedings, the proposal of a regulation of jurisdiction is inadmissible, both due to the legal nature of decisions declining jurisdiction – which are unsuitable, at that stage, to initiate the regulation procedure, being characterized by provisionality and unlimited re-proposability – and because any decision, rendered at the conclusion of the proceeding governed by art. 47 of the Code of Civil Procedure, would lack the requirement of finality, given the peculiar legal regime of the precautionary proceeding in which it would be inserted. (In the present case, the S.C. declared the appeal for regulation of jurisdiction inadmissible against the order with which the court, applying the consumer forum, had rejected the exception of territorial incompetence, raised within a preliminary technical assessment proceeding, initiated by an architect to ascertain defects and problems found in the execution of works commissioned for the conversion of a van into a camper).

This passage is crucial. The Court of Cassation highlights two main reasons for inadmissibility. Firstly, decisions on jurisdiction issued in precautionary proceedings are by their nature provisional and can be re-proposed. This means they do not have the stability and finality necessary to justify the activation of a regulation of jurisdiction, which is instead designed to definitively resolve jurisdictional issues. Secondly, a decision by the Court of Cassation on jurisdiction, if rendered at the conclusion of a precautionary proceeding, would itself lack finality. This is because a precautionary proceeding is an 'incident' relative to the merits judgment, and its decisions do not preclude the possibility of re-proposing the jurisdictional issue in the ordinary cognitive phase. Article 47 of the Code of Civil Procedure, which governs the regulation of jurisdiction, presupposes a decision with stable effects, incompatible with the provisional nature of precautionary measures. Article 42 of the Code of Civil Procedure, which introduces general rules on jurisdiction, also finds its full application in the merits phase.

Practical Implications for Professionals and Citizens

Order no. 10151/2025 is not a mere procedural technicality; it has significant practical implications for anyone involved in a precautionary proceeding. It clarifies that the appropriate venue for definitively addressing and resolving jurisdictional issues is the merits judgment, not the precautionary phase. This avoids the risk of unnecessarily slowing down precautionary proceedings, which by definition require speed and effectiveness.

• **Procedural Clarity:** The decision helps to more precisely delineate the boundaries and functions of procedural tools, avoiding superfluous and costly appeals.
• **Nature of Precautionary Measures:** It once again emphasizes the peculiarity of precautionary measures, which, while fundamental for the protection of rights, maintain a provisional and instrumental character.
• **Focus on Merits:** It reiterates that jurisdiction, in its definitive sense, finds its natural place for ascertainment and decision in ordinary cognitive proceedings.
• **Consumer Protection:** Although the consumer forum was invoked in the specific case, the inadmissibility of the regulation of jurisdiction is independent of the specific jurisdictional rule applied, focusing on the nature of the measure and the procedural phase.

Conclusions: A Pillar of Clarity for Procedural Law

The Order of the Court of Cassation no. 10151 of 2025 stands as an important reference point for civil procedural law. It consolidates a principle already expressed in similar previous rulings (such as No. 1613 of 2017), offering greater certainty to legal practitioners. Understanding the distinction between the precautionary phase and the merits phase, and the related implications in terms of available procedural tools, is fundamental for effective and strategic dispute management. The provisional nature of precautionary measures is their strength, but also the limit to the use of tools such as the regulation of jurisdiction, which require the finality of the decision.