CRIMINAL PROCEDURE CODE
PART I
ON THE GENERAL PART
TITLE I
PRELIMINARY AND GENERAL PROVISIONS
Article 4
Application of the law over time
1. The criminal procedure law shall be immediately applicable, without prejudice to acts practised during the time the previous law was in force.
2. The criminal procedure law shall not apply to proceedings initiated before its entry into force where from its immediate applicability may result.
(a) considerable aggravation, which can still be avoided, of the procedural situation of
the defendant, namely a limitation on his or her right to counsel; or
(b) breach of harmony and unity of the various acts of the proceeding.
Jurisdiction ratione temporis
Non-retroactivity
EDIT.