Welfare and Institutions Code § 5363
CHAPTER 3. Conservatorship for Persons with a Grave Disability
In the event the conservator continues in good faith to act within the powers granted him in the original decree of conservatorship beyond the one-year period, he may petition for and shall be granted a decree ratifying his acts as conservator beyond the one-year period. The decree shall provide for a retroactive appointment of the conservator to provide continuity of authority in those cases where the conservator did not apply in time for reappointment.