The decree reforming the Amparo Law was published in the Official Gazette on 16 October 2025 and entered into force the following day. It is not a procedural tidy-up: it touches legitimate interest, suspension and the case file — the three things an amparo turns on in practice.
Legitimate interest is narrowed. The reform requires that the benefit derived from annulling the challenged act be certain, not merely hypothetical or contingent. In practice: it is no longer enough to describe a possible harm; the complaint itself must establish what concretely changes for the complainant if the act is struck down.
Suspension loses general effects against general norms. The reform prohibits provisional or definitive suspension from producing general effects where a general norm is challenged: the protection benefits the complainant and nobody else. New grounds are also added for refusing it where social interest is affected or public-order provisions are contravened.
The electronic file is placed on an equal footing with the physical one. It is the least-discussed change and the one that most alters daily practice: deadlines, notifications and access to the file stop depending on the court counter.
For a company that planned to challenge a general norm relying on broad-reaching suspension, the arithmetic has changed. It is worth reviewing amparos already in progress before those yet to be filed.