(1) A criminal law which removes the criminal nature of the offence, which mitigates the punishment or which otherwise improves the situation of the person who committed the offence shall have retroactive effect, i.e. it shall extend to persons who committed the offence before the entry into force of that law, including persons who are serving the sentence or who have served the sentence but have a criminal record.

(2) The criminal law that increases the punishment or worsens the situation of the person guilty of committing a criminal offence shall not have retroactive effect.