Cal. Civil Code § 1575 : Nature Of A Contract — California Civil Code — Obligations — Consent — Undue influence Date: 14 Sep 2016 TEXT PDF Current through the 2016 Legislative Session Undue influence consists: 1.In the use, by one in whom a confidence is reposed by another, or who holds a real or apparent authority over him, of such confidence or authority for the purpose of obtaining an unfair advantage over him; 2. In taking an unfair advantage of another's weakness of mind; or, 3. In taking a grossly oppressive and unfair advantage of another' s necessities or distress. Ca. Civ. Code § 1575