California CodesCode of Civil Procedure - CCPPreliminary ProvisionsSection 3
No part of it is retroactive, unless expressly so declared.
Notes
Limits retroactive application of the Code by providing that no part of it is retroactive unless retroactivity is expressly declared. A part of the Code therefore has retroactive effect only when an express declaration states that it is to operate retroactively.
Use as reference
Lexinter.net | California Code, Code of Civil Procedure - CCP § 3 | https://laws.lexinter.net/codes/california/code-of-civil-procedure/preliminary-provisions/section-3