California Codes, Code of Civil Procedure - CCP, Part 2 — Of Civil Actions, Title 5 — Jurisdiction and Service of Process, Chapter 4 — Service of Summons, Article 4 — Persons Upon Whom Summons May Be Served, Section 416.40
A summons may be served on an unincorporated association (including a partnership) by delivering a copy of the summons and of the complaint:
(a) If the association is a general or limited partnership, to the person designated as agent for service of process in a statement filed with the Secretary of State or to a general partner or the general manager of the partnership;
(b) If the association is not a general or limited partnership, to the person designated as agent for service of process in a statement filed with the Secretary of State or to the president or other head of the association, a vice president, a secretary or assistant secretary, a treasurer or assistant treasurer, a general manager, or a person authorized by the association to receive service of process;
(c) When authorized by Section 18220 of the Corporations Code, as provided by that section.
Notes
Allows service of a summons and complaint on an unincorporated association, including a partnership, by delivery to specified registered agents, partners, managers, officers, or authorized recipients depending on the association’s form. Also permits service when authorized by the referenced Corporations Code provision, following that section’s procedure.
Use as reference
Lexinter.net | California Code, Code of Civil Procedure - CCP § 416.40 | https://laws.lexinter.net/codes/california/code-of-civil-procedure/part-2/title-5/chapter-4/article-4/section-416-40