VII
Article 69

[No one shall be liable to punishment unless he has been guilty of conduct which was punishable by law at the time when it took place or which can be fully equated with such conduct. Penalties may not be heavier than permitted by law at the time of the conduct.

Chapter I. Criminal law, scope of criminal law… and more.

Article 2
If the penal code has changed from the time the act was committed to the time the sentence is handed down, the new law shall be judged, both on the criminality of the act and the punishment. However, a punishment may never be imposed, unless it was authorized by Law when the work was committed, and not a heavier punishment than would have been the case under that Law. If the penal provisions of law have lapsed for reasons that do not testify to the legislator's changed assessment of the criminality of an act, the Law in force at the time the offense was committed shall be judged.

If the criminality of an act ceases for other reasons than those last mentioned, the punishment that has been imposed for that act lapses, insofar as it has not already been carried out. Other consequences of an act which resulted in his criminality under the old law, with the exception of the obligation to pay legal costs, are also canceled. The court that ruled in the case in the district, or a Court in the home defense assembly of a party, can then be asked whether the punishment according to the judgment should be dropped or reduced, if the court also covers more offenses. The decision of the District Court can be appealed.