Jackson v. Superior Court of Riverside Cnty.

*112 *99 A criminal defendant who is found incompetent to stand trial may be involuntarily committed for the purpose of determining if he or she is *100 likely to regain competence. ( Pen. Code, § 1370, subd. (a)(1)(B) ; all undesignated statutory references are to this code.) But the duration of commitment may not exceed " 'the reasonable period of time necessary *113 to determine whether there is a substantial probability that [the defendant] will attain that capacity in the foreseeable future.' " ( In re Davis (1973) 8 Cal.3d 798 , 804, 106 Cal.Rptr. 178 , 505 P.2d 1018 ( Davis ), quoting Jackson v.…