Corporations Code § 6212
CHAPTER 12. Required Filings by Corporation or Its Agent
If a natural person who has been designated agent for service of process pursuant to Section 6210 dies or resigns or no longer resides in the state or if the corporate agent for such purpose resigns, dissolves, withdraws from the state, forfeits its right to transact intrastate business, has its corporate rights, powers and privileges suspended or ceases to exist, the corporation shall forthwith file a designation of a new agent conforming to the requirements of Section 6210.