California Codes, Civil Code - CIV, Division 3 — Obligations, Part 2 — Contracts, Title 1 — Nature of a Contract, Chapter 3 — Consent, Section 1575
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.
Notes
Defines undue influence as using a position of confidence or real or apparent authority to obtain an unfair advantage, taking unfair advantage of another person’s weakness of mind, or taking a grossly oppressive and unfair advantage of another person’s necessities or distress.
Use as reference
Lexinter.net | California Code, Civil Code - CIV § 1575 | https://laws.lexinter.net/codes/california/civil-code/division-3/part-2/title-1/chapter-3/section-1575