Chapter II

Fundamental Rights, Freedoms and Duties

§ 23.

No one may be convicted of an act which did not constitute a criminal offence under the law in force at the time the act was committed.

No one may be sentenced to a penalty that is more severe than the one that was applicable at the time the offence was committed. If, subsequent to the commission of the offence, the law makes provision for a lighter penalty, the lighter penalty applies.

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.