909. Renewal of authority for detention or guardianship.

909.     Renewal of authority for detention or guardianship.

Unless the patient1 has previously been discharged2, the authority for detention or guardianship may be renewed: (1) from the expiration of the period of six months3 for a further period of six months4; and (2) from the expiration of any such period of renewal for a further period of one year, and so on for periods of one year at a time5.