Producto Illicito May 2026

The Doctrine of Producto Illicito : Ownership, Accession, and the Limits of Restitution in Civil Law

[Generated AI Legal Studies] Date: April 14, 2026 producto illicito

The concept of producto illicito (illicit product) arises at the intersection of property law (accession) and the principle of nemo auditur propriam turpitudinem allegans (no one can be heard to plead their own turpitude). This paper examines how civil law jurisdictions treat fruits or products generated from illegal activities or illegal contracts. While natural and industrial fruits are typically governed by the right of accession ( accessio ), illicit products pose a unique challenge: they cannot be claimed by the perpetrator of the illegality, nor can they be easily integrated into the patrimony of the state without due process. This analysis concludes that producto illicito is not a true proprietary right but a form of quasi-custodial liability, subject to confiscation without compensation. 1. Introduction In classical Roman law and modern civil codes (e.g., French, Spanish, Italian, Louisiana Civil Code), the concept of fruits ( fructus ) is fundamental. Fruits are divided into natural (produced by a thing without human intervention), industrial (produced by cultivation), and civil (rent, interest). However, when the underlying source or the act of production violates the law or public policy, the resulting product is not considered a legitimate fruit but a producto illicito . The Doctrine of Producto Illicito : Ownership, Accession,