Cal. Civil Code § 1749.51 : Gift Certificates — California Civil Code — Obligations — Waiver of provisions Date: 14 Sep 2016 TEXT PDF Current through the 2016 Legislative Session Any waiver of the provisions of this title is contrary to public policy, and is void and unenforceable. Ca. Civ. Code § 1749.51 Added by Stats 2002 ch 815 (AB 2331),s 6, eff. 1/1/2003.