Wе must decide whether we should vacate, as improvidently granted, a Certificate of Appealability issued by a motions panel pursuant to the Antiterrorism and Effective Death Penalty Act.
I
Kevin Phelps was convicted of first degree murder in a California state court in 1995 and has exhausted all relevant state remedies. On May 15, 1998, he filed a habeas corpus petition in the Northern District of California one year and fifteen dаys after the California Supreme Court declined to review a previous denial of state habeas corpus relief. The district court denied the petition based upon its having been lodged more than a year after his state post-conviction relief process ended.
1
See
28 U.S.C. § 2244(d). On appeal, we affirmed in an unpublished disposition.
See Phelps v. Alameda,
No. 99-15495,
Two years later, Phelps filed a motion under Federal Rule of Civil Procedure 60(b)(5) with the samе district court, seeking reconsideration of the earlier denial of his petition for writ of habeas corpus. He argued that
Bunney v. Mitchell,
*725 The district court squarely rejected Phelps’s motion on the merits: 2
Assuming, arguendo, that the subsequent cases upon which petitioner relies have changed the applicable law,[] the Ninth Circuit has held that “a change in the applicable law after a judgment has become final in all respects is not a sufficient basis for vacating a judgment” under Rule 60(b)(5). See Tomlin v. McDaniel,865 F.2d 209 , 210 (9th Cir.1989).... Consequently, petitioner is not entitled to relief under Rule 60(b)(5).
The court added, however, that “the Ninth Circuit has held that where a habeas сorpus petitioner files a motion for relief from a final judgment under Rule 60(b), based on a subsequent change in law, the motion should be construed as a successive application for a writ of habeas corpus.” Consequently, the district court ruled, in the alternative, that it “lack[ed] subject matter jurisdiction to determine whether the change in the law would entitle petitioner to relief.” 3
Phelps thereupon filed an application for a Certificate of Appealability (“COA”), which the district court denied, reciting that there was no “substantial showing of the denial of a constitutional right.” See § 2258(c). Phelps timely appealed and applied for a COA from us under Federal Rule of Appellate Procedure 22(b). A motions panel granted a COA, but specifically styled the issue as “whether the district court erred in construing petitioner’s motion to reinstate his 28 U.S.C. § 2254 petition pursuant to Fed. R. Civ. P[ ]. 60(b)(5) as a successive application under 28 U.S.C. § 2244(b).” Phelps v. Alameda, No. 02-15821 (9th Cir. Dec. 2, 2002) (order granting partial COA).
II
As a threshold matter, we must confess that we have some doubt as to our jurisdic *726 tion over this appeal. See infra Part III. But to what extent, as a merits panel, are we bound by the operative COA, and are we compelled to decide the issue presented by it?
In federal habeas corpus proceedings, of course, the exercise of apрellate jurisdiction is dependent entirely upon the issuance of a COA. 28 U.S.C. § 2253(c);
Lord v. Lambert,
We follow the majority view that merits panels are not required to examine allegedly defective COAs in the face of jurisdictional challenges. While “the issuance of a certificate of appealability is a prerequisite to our assertion of jurisdiction, once that certificate is issued, we have jurisdiction even if the certificate was arguably ‘improvidently granted.’ ”
James v. Giles,
However, we do not appear directly to have decided the related question of whether a panel has the
power
to address the prоpriety of a COA of its own accord. Our fellow circuits appear to be split on this particular question as well:
Compare LaFevers v. Gibson,
*727 Section 2253(c) specifies only three things about COAs: that they must issue before an appeal may be taken, § 2253(c)(1), that they may be granted only upon “a substantial showing of the denial of a constitutional right,” § 2253(c)(2), and that they must specify the issues to be considered on appeal, § 2253(c)(3). Unfortunаtely, then, § 2253(c) itself provides no insight into the question of whether and to what extent we may review a previously issued COA.
Our own relevant precedent, however, provides key insight into this question. When first confronted with the reviewability of COAs in
Gatlin,
we took a narrow approach, declining to address the propriety of a COA upon the motion of a party because there had been no challenge to it within the appropriatе 35 day window as set forth by our Circuit Rule 22-l(e).
See Gatlin,
But at the time the COA had been issued in the
James
case, our circuit rules had not yet provided for this 35 day opportunity to challenge a COA.
See James,
This conclusion is further supported by a closely analogous principle: We do have the power to expand the scope of a COA to include additional issues, even if they previously had been deemed inappropriate for review.
See, e.g., Nardi v. Stewart,
Of course, we must be ever mindful of the “gatekeeping and efficiency functions of the certificate of appealability.”
James,
Nevertheless, the pursuit of efficiency alone does not support an absolute bar against examining the validity of a COA. In many instances, few legal resources may have been spent by the time a party challenges a COA. So if “briefing has not yet begun but the cеrtificate has identified a constitutional issue of dubious substan-tiality,” it may make a good deal of sense to consider a challenge to a COA.
Buie,
Moreover, there may be competing concerns involved, and in exceptional circumstances the vacatur of a COA may be appropriate regardless of the investment of timé and energy into the case. For example, the issuance of a COA may have been so far off the mark that the certificate is simply invalid on its face. If we had no power to vacate COAs, we would be unable adequately to participate in the proper administration of § 2253(c). The decision to grant a COA would “effectively be unreviewable on appeal,” a highly disfavored result.
Batzel v. Smith,
Based on our review of the relevant precedent, we are satisfied that although a merits panel generally need not examine the propriety of a COA, it nevertheless retains the power to do so.
*729 III
And now to our jurisdictional dilemma in this case: Irrespective of the “successive petition” alternative holding, the district court simply denied Phelps’s Rule 60(b) motion on the merits, a ruling as to which no COA has been granted. Thus, any deсision by us would offer no relief. If the district court’s successive petition ruling were indeed correct, the dismissal of Phelps’s motion would stand. If the successive application ruling were erroneous, the result would remain the same: Phelps’s motion would still be unsuccessful because the district court has already denied it on the merits. In other words, no matter how we rule on appeal, Phelps’s Rule 60(b) motion fails. 7
A
Alternative holdings may be valuable tools of judicial administration, but they can present potential advisory-opinion problems.
See, e.g., Karsten v. Kaiser Found. Health Plan,
But habeas corpus petition cases are unique: Under AEDPA, we simply “lack jurisdiction to resolve the merits of any claim for which a COA is nоt granted.”
Beaty v. Stewart,
In this respect, the limited jurisdiction preserved by the grant of a COA is not unlike the Supreme Court’s authority over state-court decisions. Because the high Court does not exercise jurisdiction over purely state-law issues, an “adequate and indeрendent” state-law ground for decision essentially makes any federal issues superfluous, and the Court will not consider them.
See Michigan v. Long,
B
Here, we are confronted with an “adequate and independent”
federal
ground for decision outside our jurisdic: tional purview. As a result, consideration of the issue specified by the COA in this case is inappropriate.
8
See Kaminski v. United States,
Perhaps this problem might have been avoided had Phelps sought to expand the COA to include all dispositive holdings. But “[i]f a party wishes to exрand the scope of a partial COA, he must follow the procedure set forth in Circuit Rule 22 1(d), which requires him to seek and obtain from the appellate court broader certification.”
United States v. Christakis,
In this case, if we were to entertain the only question presented to us, we would be required to render a ruling without “any effectual relief whatever,”
Mills,
IV
For the foregoing reasons, we vacate the COA as improvidently granted. Because *731 we therefore lack subject-matter jurisdiction, the appeal is
DISMISSED.
Notes
. Because the state court's action was an order rather than an opinion, it became final upon filing. See Cal. Rules of Court 24(a) since amended, with corresponding provision now appearing in Rule 29.4(b)(2) ("An order of the Supreme Court denying a petition for review of a decision of a Court of Appeal becomes final when it is filed.”).
. We use the term "merits” somewhat loosely here, for, of course, a decision to dismiss a Rule 60(b) motion means that the district court will not reconsider the underlying merits of the case. Instead, "merits” in this context relates to the court’s consideration of the substance of Phelps's claim that a Rule 60(b) motion should be granted.
. Although somewhat ambiguous, we must interpret the discussion of subject-matter jurisdiction as an alternative holding for at least two reasons. First, the district court’s subsequent denial of a Certificate of Appealability nowhere mentions the jurisdictional issue, and states only that the earlier decision was "based on settled Ninth Circuit law that a change in the applicable law after a judgment has become final in all respects is not a sufficient basis for vacating a judgment under Rule 60(b)(5)” (internal quotation omitted). Second, given the district court's simultaneous denial of Phelps's Rule 60(b) motion on the merits, we must seek to avoid the constitutional tension that a cоntrary interpretation likely would engender.
See Christopher v. Harbury,
We recognize more generally that an adverse jurisdictional dеtermination stands at apparent odds with the rendering of an alternative holding on the merits of the same case. Nevertheless, we have held that "alternative holdings are a common practice that prevents the overconsumption of adjudicative resources” and "do not divest the adjudicator of jurisdiction merely because they are inconsistent.”
Container Stevedoring Co.
v.
Dir., Office of Workers Comp. Programs,
. The Third Circuit also has indicated that merits panels have such authority, given that they are
required
to review COAs.
See Cepero,
. It would be difficult to understand Circuit Rule 22-l(c) itself as an independent and sufficient mechanism insulating COAs from judicial review. It merely sets forth a procedure by which
parties
can challenge the issuance of a COA. It does not thereby act of its own accord entirely to prevent a
merits panel
from examining the issue if necessaiy. A party's failure to comply with Rule 22-1 (c) is more properly understood as a waiver of any challenge to a COA. And when a party waives issues on appeal, we generally do not impose an absolute barrier against their consideration.
See, e.g., Koerner
v.
Grigas,
. Whether originally issued by a district court or a motions panel, “rulings on jurisdictional issues do not bind a merits panel” of this Cоurt.
Hiivala,
. We note that there should be no important future consequence of the lower court’s ruling that this was a successive petition.
See Hill v. Alaska,
. The prohibition against advisory opinions is often couched in constitutional terms, but when there are legal questions directly involving the litigants before a court — even though resolution of an issue may have no ultimate effect upon them—a disposition squarely may not implicate the Constitution.
See, e.g., Long,
. Normally, a case is rendered moot "when, by virtue of an intervening event, a court of appeals cannot grant any effectual relief whatever.”
Calderon v. Moore,
