BOOK I
GENERAL PART

TITLE I
APPLICATION OF CRIMINAL LAW

SINGLE CHAPTER
GENERAL PRINCIPLES

Article 3. Applicability of criminal law over time

1. No person may be punished for an act defined as a crime at the time of its commission if a subsequent law no longer considers it as such.

2. In such a case, if a decision convicting the person has already been rendered, execution of said decision and its penal effects shall cease, even when the decision rendered is final.

3. The law subsequent to the commission of the crime shall apply to previous conduct whenever the same proves to be more lenient to the perpetrator and, in the case of a final decision, if any benefit may still be obtained.

Article 11
Jurisdiction ratione temporis
2. If a State becomes a Party to this Statute after its entry into force, the Court may exercise its jurisdiction only with respect to crimes committed after the entry into force of this Statute for that State, unless that State has made a declaration under article 12, paragraph 3.

Article 24
Non-retroactivity ratione personae
1. No person shall be criminally responsible under this Statute for conduct prior to the entry into force of the Statute.
2. In the event of a change in the law applicable to a given case prior to a final judgement, the law more favourable to the person being investigated, prosecuted or convicted shall apply.