ON PETITION FOR PANEL REHEARING AND PETITION FOR REHEARING EN BANC

The petition for panel rehearing is DENIED. The court having been polled at the request of one of its members, and a majority of the judges who are in regular active service and not disqualified not having voted in favor (Fed. R.App. P. 35 and 5th Cir. R. .35), the petition for rehearing en banc is DENIED.

. In the en banc poll, 4 judges voted in favor of rehearing (Judges King, Dennis, Prado, and Graves), and 11 judges voted •against rehearing (Chief Judge Stewart and Judges Jolly, Davis, Jones, Smith, Clement, Owen, Elrod, South wick, Haynes, and Higginson).

Louisiana, by statute, requires that death sentence executions be carried out by lethal injection. La.Rev.Stat. § 15:569(B). Prior to 2010, the State of Louisiana, pursuant to a Louisiana Department of Corrections directive, used a three-drug protocol to execute inmates via lethal injection: a combination of sodium thiopental (a barbiturate and anesthetic), pancuronium bromide (a paralyzing agent that, inter alia, induces suffocation), and potassium chloride (a substance that induces a heart attack).1 In 2010, due to a nationwide shortage of sodium thiopental, Louisiana, having exhausted its unexpired supply of that drug, repealed or rescinded its regulations governing lethal-injection protocols and' procedures altogether and did not publicly announce what drug or combination of drugs it would use in place of sodium thiopental.

On January 23, 2013, Sepulvado, a Louisiana death row prisoner, intervened in this § 1983 suit seeking to obtain notice from the State of what drug or combination of drugs will be used to execute him in his execution on February 13, 2013, and an opportunity to consider whether to challenge the constitutionality of the drug protocol that the State plans to use in his *718execution.2 The State repeatedly refused to furnish Sepulvado with this notice and adamantly insisted before the district court that it is under no obligation to officially release the details of the execution protocol.

On February 7, 2013, the district court granted Sepulvado a preliminary injunction that required the State to turn over its lethal-injection protocols and stayed Sepulvado’s execution until further order of the court. Hoffman v. Jindal, No. 12-CV-796-JJB, 2013 WL 489809 (M.D.La. Feb. 7, 2013). If the district court had not stayed Sepulvado’s execution scheduled for February 13, 2013, Sepulvado likely would have been the first person to be put to death without definite official notice as to what drug or combination of drugs would be used to execute him and without an opportunity to object and be heard at a meaningful time and in a meaningful manner.

The State appealed the district court’s injunction and stay order. Subsequently, after regular appellate proceedings, a panel of this court, on August 30, 2013, reversed the district court’s judgment and held that a death row prisoner has no liberty or procedural due process interest in receiving notice of what drug or combination of drugs and methods will be used to execute him, and, if appropriate, in having an opportunity to object to those drugs and methods. Sepulvado v. Jindal, 729 F.3d 413 (5th Cir. 2013).

However, prior to the panel’s decision on August 30, 2013, the State, on June 17, 2013, disclosed a new lethal-injection protocol to Sepulvado and the district court, stating that the State will use a single dose of pentobarbital to execute Sepulvado and describing in some detail the methods by which the execution will take place. The State’s compliance with the district court’s injunction order thus rendered moot the constitutional procedural due process question raised by the State’s appeal.

In my view, the panel opinion is not only invalid because it was based on an erroneous application of procedural due process — the panel also contravened the Supreme Court’s prior admonishment to us in University of Texas v. Camenisch, 451 U.S. 390, 101 S.Ct. 1830, 68 L.Ed.2d 175 (1981), that we must refrain from issuing advisory opinions on preliminary injunctions that have already been carried out. Accordingly, I respectfully dissent from the denial of rehearing en banc.

I.

It is axiomatic that this Court has an obligation to satisfy itself of its own subject-matter jurisdiction. E.g., Steel Co. v. Citizens for a Better Env’t, 523 U.S. 83, 95, 118 S.Ct. 1003, 140 L.Ed.2d 210 (1998). Article III of the Constitution extends the “judicial Power” of the United States only to “Cases” and “Controversies.” U.S. Const, art. Ill, § 2. With certain exceptions not applicable here, federal courts must decline to exercise jurisdiction over a case that has become moot. See, e.g., Friends of the Earth, Inc. v. Laidlaw Envtl. Servs. (TOC), Inc., 528 U.S. 167, 180, 120 S.Ct. 693, 145 L.Ed.2d 610 (2000). “A case becomes moot — and therefore no longer a ‘Case’ or ‘Controversy’ for purposes of Article III — when the issues presented are no longer ‘live’ or the parties lack a legally cognizable interest in the *719outcome. No matter how vehemently the parties continue to dispute the lawfulness of the conduct that precipitated the lawsuit, the case is moot if the dispute is no longer embedded in any actual controversy about the plaintiffs’ particular legal rights.” Already, LLC v. Nike, Inc., — U.S. -, 133 S.Ct. 721, 726-27, 184 L.Ed.2d 553 (2013) (citations and quotation marks omitted); see also, e.g'., Friends of the Earth, 528 U.S. at 180, 120 S.Ct. 693 (“The Constitution’s case-or-controversy limitation on federal judicial authority, Art. Ill, § 2, underpins ... [the Court’s] mootness jurisprudence.”). Federal courts of appeals must decline to review a preliminary injunction on the merits if, during the pendency of the appeal, the defendant has complied with the terms of the injunction. Camenisch, 451 U.S. at 396, 398, 101 S.Ct. 1830.

In Camenisch, the Supreme Court granted certiorari and vacated an opinion of this Court as moot under circumstances similar to those presented in this case. See id. There, the district court granted a preliminary injunction that required the University of Texas to pay for an interpreter for a deaf graduate student under the Rehabilitation Act of 1973. Id. at 392-93, 101 S.Ct. 1830. A panel of this Court affirmed the district court’s order in relevant part. Id. at 393, 101 S.Ct. 1830. However, by the time this Court acted, the University had obeyed the district court’s preliminary injunction. Id. Nevertheless, we concluded that the case was not moot because, we reasoned, one justiciable issue remained live in the case — namely, which party would bear the responsibility of paying for the interpreter. Id. The Supreme Court vacated our opinion as moot, admonishing that “the terms of the injunction ... ha[d] been fully and irrevocably carried out” by the time we issued our opinion, and that, because the only issue remaining must be resolved after a full trial on the merits, “[u]ntil such á trial has taken place, it [was] inappropriate for th[e] Court to intimate any view on the merits of the lawsuit.” Id. at 398, 101 S.Ct. 1830; see also, e.g., Sale v. Haitian Ctrs. Council, Inc., 509 U.S. 918, 113 S.Ct. 3028, 125 L.Ed.2d 716 (1993) (summarily vacating as moot court of appeals decision affirming preliminary injunction) (citing Camenisch, 451 U.S. 390, 101 S.Ct. 1830, and United States v. Munsingwear, 340 U.S. 36, 39-40, 71 S.Ct. 104, 95 L.Ed. 36 (1950)).

The panel fails to acknowledge that this case is controlled by Camenisch. The district court entered a preliminary injunction before any proceedings had taken place on the merits, and the State complied fully with the terms of the preliminary injunction — by turning over its revised lethal-injection protocol to Sepulvado — before the panel of this Court issued its decision. This appeal commenced on February 7, 2013, when the State filed its notice of appeal. During the pendency of this appeal, on June 6, 2013, a magistrate judge ordered that the State turn over its lethal-injection protocols and denied the State a protective order with respect to the protocols. See Hoffman v. Jindal, No. 3:12-cv-00796-JJB-SCR (Doc. No. 62).3 The *720State complied with the discovery order, and on June 17, 2013, the State turned over its revised lethal-injection protocol. See id. (Doc. No. 67, ¶ 31, at 9-10). The new protocol describes the lethal-injection methodology and provides that pentobarbi-tal alone will be used. See id. On August 16, 2013, the plaintiffs filed an amended complaint citing and summarizing the State’s procedures pursuant to the lethal-injection protocol that the State turned over on June 17, 2013. Id. (Doc. No. 67, ¶ 31, at 9). The panel filed its opinion addressing the State’s ostensible refusal to hand over the protocol on August 30, 2013, without mentioning that the State had already turned over the new protocol.

Thus, the question that formed the basis of the panel’s decision — whether Sepulvado had a liberty interest, giving rise to the protections of procedural due process, to have notice of what drug or combination of drugs the State would use to execute him — was mooted before the panel’s opinion issued, in violation of Camenisch. Based on the district court’s written order granting Sepulvado a preliminary injunction and stay of execution, and what was discussed at the hearing on Sepulvado’s motions on February 7, 2013, it is clear that the district court’s preliminary injunction was based solely on the fact that Louisiana had maintained complete secrecy as to its lethal-injection protocol up to that point and likely would not have disclosed any protocol before Sepulvado’s execution, which was then scheduled for February 13, 2013.4 After the State complied with the district court’s order, the only question presented to this Court — whether Sepulvado was entitled to notice of what drug or combination of drugs would be used to execute him — became irrevocably moot. Sepulvado received all the notice to which he claimed he was entitled in his motion for a preliminary injunction.

The panel was without jurisdiction to rule on the procedural due process question presented. Any remaining due process or Eighth Amendment issues should be resolved by a trial on the merits or after some further order of the district court, not on appeal of the district court’s moot injunction. See Camenisch, 451 U.S. at 396, 398, 101 S.Ct. 1830 (holding appeal from order granting preliminary injunction was moot because “the terms of the injunction ... ha[d] been fully and irrevocably carried out” by the time we issued our opinion, and that, because the only issue remaining must be resolved after a full trial, it was “inappropriate for th[e] Court to intimate any view on the merits of the lawsuit”).

Accordingly, we should have vacated the panel opinion and the district court’s orders and remanded for further proceedings including, if necessary, a trial on the merits.

II.

By reaching the merits of a constitutional question that had become moot by the time the panel purported to answer it, the panel overstepped its authority and rendered an improper advisory opinion. The panel’s overreaching is especially improper given the importance of the constitutional question presented. For the reasons that follow, the panel’s holding was also wrong on the merits.

In holding that condemned inmates have no liberty interest whatsoever in receiving notice and opportunity to be heard with *721respect to what substance or substances will be used to execute them, the panel misconstrued the nature of the liberty interest asserted, came to a holding that is much broader than necessary to resolve the case before it, and created misguided precedent that, if followed, will severely curtail the protections of procedural due process. Procedural due process imposes constraints on governmental decisions which deprive individuals of “liberty” or “property” interests within the meaning of the Due Process Clause of the Fifth or Fourteenth Amendment. Mathews v. Eldridge, 424 U.S. 319, 348-49, 96 S.Ct. 893, 47 L.Ed.2d 18 (1976). The touchstone of procedural due process is “the requirement that ‘a person in jeopardy of serious loss be given notice of the case against him and opportunity to meet it.’ ” Id. (quoting Joint Anti-Fascist Comm. v. McGrath, 341 U.S. 123, 171-72, 71 S.Ct. 624, 95 L.Ed. 817 (1951) (Frankfurter, J., concurring)) (alteration omitted); see also id. at 333, 96 S.Ct. 893 (“The right to be heard before being condemned to suffer grievous loss of any kind ... is a principle basic to our society.”) (citation and quotation marks omitted). The notice must be of such nature as reasonably to convey the required information, and “must be granted at a meaningful time and in a meaningful manner.” E.g., Hamdi v. Rumsfeld, 542 U.S. 507, 533, 124 S.Ct. 2633, 159 L.Ed.2d 578 (2004) (quoting Fuentes v. Shevin, 407 U.S. 67, 80, 92 S.Ct. 1983, 32 L.Ed.2d 556 (1972)) (quotation marks omitted). “A liberty interest may arise from the Constitution itself, by reason of guarantees implicit in the word ‘liberty,’ ” Wilkinson v. Austin, 545 U.S. 209, 221, 125 S.Ct. 2384, 162 L.Ed.2d 174 (2005) (citing, inter alia, Vitek v. Jones, 445 U.S. 480, 493-94, 100 S.Ct. 1254, 63 L.Ed.2d 552 (1980) (liberty interest in avoiding involuntary psychiatric treatment and transfer to mental institution)), “or it may arise from an expectation or interest created by state laws or policies,” id. (citing, inter alia, Wolff v. McDonnell, 418 U.S. 539, 556-58, 94 S.Ct. 2963, 41 L.Ed.2d 935 (1974) (liberty interest in avoiding withdrawal of state-created system of good-time credits)).

Sepulvado has a cognizable liberty interest in obtaining definite, official notice as to what drug or combination of drugs will be used to execute him, and he is entitled to due process before he is fatally and finally deprived -of that interest. Without such notice, Sepulvado would be subject to a death warrant and execution by lethal injection by a substance or combination of substances that might cause unnecessary pain and suffering during the execution in violation of the Eighth Amendment’s Cruel and Unusual Punishments Clause — an in-alterable, grievous loss entitling him, at a minimum, to notice and an opportunity to object. See Wilkinson, 545 U.S. at 221, 125 S.Ct. 2384; Mathews, 424 U.S. at 348-49, 96 S.Ct. 893; McGrath, 341 U.S. at 168, 71 S.Ct. 624 (Frankfurter, J., concurring). If a State does not officially release the details of its execution protocol, a court would have no way of verifying whether the State planned to use pentobarbital or another substance, such as expired or contaminated sodium thiopental, or an entirely different chemical whose properties could very well cause an unconstitutional degree of pain and suffering. If Sepulva-do were not given such notice before his execution takes place, there is absolutely no possibility of a post-deprivation hearing or any opportunity to be heard “at a meaningful time and in a meaningful manner.” Hamdi, 542 U.S. at 533, 124 S.Ct. 2633 (citations and quotation marks omitted).

In sum, Sepulvado has demonstrated that he has a strong liberty interest in receiving definite, official notice of the drug or combination of drugs that will be used to execute him. This conclusion is *722consistent with the general principles that changing and keeping secret the details of a pending execution offends the basic constitutional principle of fair notice,5 and that criminal proceedings of all kinds must be subject to public scrutiny.6

In ruling against Sepulvado, the panel fundamentally misconstrued the nature of the liberty interest that Sepulvado asserts. Sepulvado does not assert that he has a liberty interest in being free from uncertainty or anxiety, cf. Sepulvado, 729 F.3d at 419-20 — rather, he has a liberty interest in having notice of what drugs will be used to execute him and to an opportunity to object and to have some kind of hearing. The panel relies on cases that are materially distinguishable from this case in that in none of the cited authorities did the State outright refuse to give the prisoner notice of the drugs it planned to use in the execution. Cf. id. at 418-19 (citing Powell v. Thomas, 641 F.3d 1255, 1258 (11th Cir. 2011) (finding no constitutional violation where the state’s notice of its “execution protocol w[as] accurate and adequately informed [the condemned inmate] of the process that would be used”), and Beaty v. Brewer, 791 F.Supp.2d 678, 682-83 (D.Ariz. 2011) (last-minute notice to condemned inmate of drug substitution), aff'd, 649 F.3d 1071, 1072 (9th Cir. 2011) (per curiam)).7 Moreover, the panel erred *723when it suggested that Sepulvado cannot prevail simply because he pointed to no federal appellate decision that recognized a substantive right to the notice that he seeks. A plaintiff need not have an officially recognized liberty interest before being entitled to notice of the deprivation of that interest and an opportunity to be heard at a meaningful time and a meaningful manner. See, e.g., Wilkinson, 545 U.S. at 221, 125 S.Ct. 2384 (“A liberty interest may arise from the Constitution itself, by reason of guarantees implicit in the word ‘liberty[.]’ ”) (citations omitted). Accordingly, Sepulvado has succeeded in asserting a cognizable liberty interest in knowing what drug or combination of drugs will be used to execute him and in having an opportunity to object to a revised lethal-injection protocol. The panel’s contrary holding was in error.

III.

This case presents a question of exceptional importance. More executions take place in our circuit than anywhere else in this country, and, due to shortages in execution drugs, some states have increasingly attempted to shroud their lethal injection protocols in secrecy and thereby to avoid judicial review of those protocols. The panel created an erroneous, overreaching circuit precedent that would allow states to continue this unconstitutional practice. Moreover, the procedural due process question presented was moot by the time the panel purported to resolve it. The Constitution and our customs require that we refrain from opining on important questions of constitutional law unless it is necessary to resolve a real, concrete dispute between the parties — a requirement that goes to the very jurisdiction of this Court to hear cases. See, e.g., Steel Co., 523 U.S. at 101, 118 S.Ct. 1003. The panel rendered an advisory opinion purporting to resolve a constitutional question of the utmost importance even though this minimal jurisdictional requirement was not met. The panel thus deprived us of the opportunity to consider how we, as a circuit, will deal with states’ secrecy and the changing lethal-injection landscape when the question is properly presented by parties pressing their concrete rights in a live controversy following a full trial on the merits.

Accordingly, I respectfully dissent.