California Code, Corporations Code - CORP § 9912

(a) Each corporation which is subject (pursuant to the terms of the prior nonprofit law or some other specific statutory provision) to the prior nonprofit law shall, on and after January 1, 1980, be subject to the new public benefit corporation law, the new mutual benefit corporation law, or the new religious corporation law based on the following:

(b) Prior to January 1, 1980, the Secretary of State's office shall send a nonbinding, advisory notice to each corporation covered by subdivision (a) indicating the type of corporation it is, based on the rules set forth in subdivision (a) of this section.

(c) Notwithstanding subdivision (a), assets held by a mutual benefit corporation in charitable trust shall be administered in compliance with the provisions of the trust and in accordance with any standards applicable pursuant to Section 7238.

(d) A corporation may petition the superior court of the proper county to determine its status as a public benefit, mutual benefit or religious corporation in accordance with subdivision (a). Notice of the proceeding shall be given as the court may direct. Any member may intervene. Notice of the proceeding shall be served on the Attorney General who may intervene. A certified copy of any final judgment in any such proceeding shall be filed with the Secretary of State.

(e) The Secretary of State may, in carrying out any obligation arising under this article, require any information necessary on existing corporations from the Franchise Tax Board or other state agency.