MEMORANDUM Arizona state prisoner Craig Clay Thornton appeals pro se from the district court’s judgment denying his 28 U.S.C. § 2254 habeas petition. We dismiss. The district court concluded that Thornton’s
section 2254 petition was time-barred and, in the alternative, denied Thornton’s claims as proeedurally defaulted and without merit. It granted a certificate of ap-pealability as to the timeliness of the petition, but not as to its remaining rulings. In his opening brief, Thornton contends that the district court erred by dismissing his petition on timeliness grounds without providing him notice and an opportunity to be heard. He further contends that he may be entitled to equitable tolling or to delayed accrual of the limitations period pursuant to 28 U.S.C. § 2244(d)(1)(B).
The state has now waived the statute of limitations defense. Regardless of the waiver, we lack jurisdiction to review Thornton’s contentions because, in light of the district court’s alternative denial on the merits, a decision by this court regarding the timeliness of Thornton’s petition would not effect the result below. See Preiser v. Newkirk, 422 U.S. 395, 401, 95 S.Ct. 2330, 45 L.Ed.2d 272 (1975) (“[A] federal court has neither the power to render advisory opinions nor to decide questions that cannot affect the rights of litigants in the case before them.” (internal quotation marks omitted)).
Thornton has not asked us to expand the certificate of appealability to include the district court’s rulings on procedural default or the merits. Although we may grant a certificate of appealability sua sponte, we decline to do so. See 9th Cir. R. 22-1(e); Hiivala v. Wood, 195 F.3d 1098, 1104-05 (9th Cir. 1999) (requiring substantial showing of the denial of a constitutional right). DISMISSED. This disposition is not appropriate for publication and is not precedent except as provided by Ninth Circuit Rule 36-3.