Practical guide

How to draft an unjust enrichment summons with AI

3 min read · Updated September 2026 · Editorial oversight: Avv. Federico Papa

The action for unjust enrichment is a pivotal subsidiary remedy aimed at rebalancing unjustified shifts in wealth. This guide explores how to structure the summons, known as atto di citazione, while adhering to the residual nature of the claim and Italian civil procedure requirements.

In brief

A summons for unjust enrichment, arricchimento senza causa, under Art. 2041 of the Italian Civil Code requires proof of one party's enrichment, another's impoverishment, and a causal link without legal justification. Crucially, it is a subsidiary action, known as sussidiarietà, available only when no other legal remedies exist. edit.legal assists in verifying these prerequisites and drafting the prayers for relief to obtain an indemnity, which is calculated as the lesser amount between the enrichment gained and the actual loss suffered.

The steps

1.
Checking for subsidiarity
The action under Art. 2041 is subsidiary, as per Art. 2042 of the Civil Code. Before drafting the atto di citazione, one must ensure the claimant has no other specific legal remedy, such as a contractual or tort claim. If a valid title or a specific remedy exists, the unjust enrichment claim will be inadmissible. edit.legal can analyze the specific case to rule out the availability of other legal remedies, ensuring the procedural choice is correct from the start.
2.
Identifying objective requirements
The summons must accurately describe the shift in wealth. You must allege the defendant's enrichment, arricchimento, the claimant's corresponding loss, impoverimento, and the lack of a legal basis, titolo, justifying the transfer. It is essential to highlight the unity of the causative event, meaning that the enrichment and loss stem from the same incident. edit.legal supports the lawyer in narrating the facts, ensuring all constitutive elements are stated precisely to avoid objections regarding the claim's lack of specificity.
3.
Quantifying the indemnity
The prayer for relief, petitum, is not for full damages but for an indemnity, indennizzo. This must be calculated and limited to the lesser amount between the enrichment gained by the beneficiary and the loss suffered by the claimant. A request exceeding the actual enrichment or the loss will be partially rejected. edit.legal helps structure the financial calculation based on established criteria, clearly distinguishing between actual damages, danno emergente, and a mere indemnity for unjustified enrichment.
4.
Drafting formal requirements under Art. 163 c.p.c.
The summons must follow the strict template of the Code of Civil Procedure, c.p.c. It is mandatory to include the warning, avvertimento, under point 7 of Art. 163 c.p.c. regarding forfeitures for failure to appear. Clear indication of evidence and the indication of the hearing date are essential elements. edit.legal automates the generation of these standard clauses, reducing the risk of formal defects that could lead to the nullity of the summons, ensuring every legal reference is updated to recent procedural reforms.
5.
Preparing the evidentiary file
Along with the summons, documents proving the actual depletion and the other party's benefit must be submitted. edit.legal helps organize the exhibit list, indice dei documenti, and links each piece of evidence to the constitutive facts of the action, assisting the judge in assessing the unjust nature of the wealth transfer. It is important to attach bank records, expert reports, or correspondence proving the absence of a prior contractual agreement that would have otherwise required a different legal qualification of the claim.

Legal basis: Art. 2041 c.c.Art. 2042 c.c.Art. 163 c.p.c.Art. 164 c.p.c.Art. 2946 c.c.

Mistakes to avoid

Filing the action when a valid contract or another specific action exists (violation of subsidiarity).
Claiming full damages instead of an indemnity limited to the actual enrichment.
Failure to specifically indicate the causal link between one party's enrichment and the other's loss.
Confusing the enrichment action with a restitution claim following a contract's nullity.

Frequently asked questions

Can the enrichment action be filed against the Public Administration?

Yes, provided that the administration has recognized, even implicitly, the utility of the work or service received, unless it involves forced enrichment.

What is the statute of limitations for the action under Art. 2041 c.c.?

The action is subject to the ordinary ten-year statute of limitations, prescrizione ordinaria, starting from the day the enrichment occurred.

What is the difference between unjust enrichment and recovery of undue payments?

The recovery of undue payments, ripetizione dell'indebito under Art. 2033, specifically concerns payments made without cause, while Art. 2041 is a general clause for any other type of unjustified financial advantage.

Editorial oversight: Avv. Federico Papa·ICAMUpdated 28 September 2026Content drafted with AI support and subject to editorial source checks. Despite these controls, inaccuracies may remain: reports and rectification requests are welcome. Report a correction

What edit.legal automates

—Automatic verification of subsidiarity by analyzing the availability of other specific legal actions.
—Generation of the factual narrative highlighting the causal link between enrichment and loss.
—Automatic calculation of the indemnity based on the rule of the lesser amount between the two financial stakes.