OPINION
This interlocutory appeal presents,
inter alia,
the question of whether the
Perlman
rule survives
Mohawk Industries, Inc. v. Carpenter,
— U.S. -,
I
Intervenor-appellant Quellos Group, LLC (“Quellos”), appeals the district court’s order compelling Skadden, Arps, Slate, Meagher & Flom LLP (“Skadden”), Quellos’s former counsel, to comply with a *571 pretrial subpoena duces tecum issued in anticipation of the criminal trial of two former Quellos executives (the “defendants”). Quellos was not charged in the criminal case. Quellos claims the materials the government seeks are subjеct to its attorney-client privilege.
The criminal case underlying the present interlocutory appeal alleges that the defendants violated federal law in creating a fraudulent tax shelter called “POINT.” A federal grand jury indicted the defendants on eighteen counts, including conspiring to defraud the Internal Revenue Service, tax evasion, counseling false tax filings, wire fraud, and conspiring to launder monetary instruments. The government alleges that the defendants “developed and marketed” POINT on behalf of Quellos.
Quеllos intervened to assert attorney-client privilege against a pretrial subpoena duces tecum served on Skadden in April 2010. The government claims that key to the success of the POINT transaction were opinion letters Quellos obtained from “respеcted law firms” that assured POINT clients that POINT was “more likely than not” to survive an IRS challenge. Before the district court, the government alleged that the defendants consulted Skadden regarding the development of POINT, with an eye toward having the firm produce an opiniоn letter on the shelter’s legality. The district court permitted the government to serve Skadden with a pretrial subpoena duces tecum. See Fed. R.Crim.P. 17(c). The government sought all materials from January 1999 through December 2000 relating to POINT, as well as materials prepared during that period at the behest of certain Quellos employees that related to tax opinions, financial instruments, and partnerships.
Quellos informed Skadden that it was asserting attorney-client privilege as to the materials the government sought. Accordingly, Skaddеn produced a privilege log identifying three categories of documents — one set of attorney billing records and two sets of handwritten attorney notes (the “Skadden Documents”) — as responsive to the subpoena and indicating that attorney-client privilеge was being asserted as to all of them. The government moved to compel and Quellos moved to intervene. The district court granted Quellos’s motion to intervene and Quellos filed an opposition to the government’s motion to compel. The district court granted the government’s motion to compel, and this interlocutory appeal ensued. Upon Quellos’s motion, this court stayed the district court’s order pending appeal.
Subsequently, the defendants entered into plea agreements and the criminal trial was cancelled. Thereafter, the government informed Quellos that it would continue to seek the Skadden Documents. The government served a second subpoena duces tecum on Skadden, identical to the first in all relevant respects, with a return dаte set for the defendants’ sentencing hearing. 1 Thereafter, Quellos filed a “Notice of Further Proceedings and Suggestion of Mootness” before this court, which the government opposed.
II
We have jurisdiction to entertain this interlocutory appeal. “This court generally has jurisdiction to review only ‘appeals from all final decisions of the district courts.’ ”
United States v. Griffin,
440 F.3d
*572
1138, 1141 (9th Cir.2006) (quoting 28 U.S.C. § 1291). Here, the “district court’s pretrial order is not a final decision under § 1291 because it does not ‘end[ ] the litigation on the merits and leave[] nothing for the court to do but execute the judgment.’ ”
Id.
(alterations in the original) (quoting
Van Cauwenberghe v. Biard,
Skadden has not been cited in contempt. However, we maintain jurisdiction over this interlocutory appeal under the so-called
Perlman
rule.
See Perlman v. United States,
The
Perlman
rule survives the Supreme Court’s recent decision in
Mohawk Industries, Inc. v. Carpenter,
— U.S. -,
Perlman
and
Mohawk
are not in tension. When assessing the jurisdictional basis for an interlocutory appeal, we have considered the
Perlman
rule and the
Cohen
collateral order exception separately, as distinct doctrines.
See, e.g., Griffin,
Mohawk
forecloses interlocutory appeal of some district court orders in reliance on the faсt that “postjudgment appeals generally suffice to protect the rights of litigants and assure the vitality of the attorney-client privilege.”
For all these reasons, we conclude that, under the Perlman rule and 28 U.S.C. § 1291, we have jurisdiction to hear Quellos’s claims. 3
Ill
Turning to the issues before us, we agree with Quellos’s suggestion that the guilty plea of the defendants, and subsequent vacation of the trial, have rendered the trial subpoenas moot.
See Harter v. Iowa Grain Co.,
No. 98-7108,
*574 In this ease, the district court authorized the government “to issue a pretrial subpoena duces tecum” to Skadden pursuant to Fed. R. Crim. P. 17(c)(1). In order to grant a pretrial subpoena in a criminal case, the court must be persuaded by the moving party:
(1) that the documents are evidentiary and relevant; (2) that they are not otherwise procurable reasonably in advance of trial by exercise of due diligence; (3) that the party cannot properly prepare for trial without such production and inspection in advance of trial and that the failure to obtain such inspection may tend unreasonably to delay the trial; and (4) that the application is made in good faith and is not intended as a general “fishing expedition.”
United States v. Nixon,
In granting the pre-trial subpoena duces tecum, the district court necessarily engaged in a “discretionary, case-by-case inquiry” in which the court considered these factors and the purposes for which the government sought the Skadden Documents.
United States v. Bergeson,
Therefore, we must dismiss this appeal as moot and instruct the district court to vacate its order directing compliance with the subpoena.
See United States v. Munsingwear, Inc.,
The government argues that it needs the Skadden Documents for sentencing. Indeed, a “pretrial” criminal subpoena can be issued for a sentencing proceeding.
See United States v. Winner,
In such situations, the party seeking production must show: (1) that the information is evidentiary and relevant; (2) that it is not otherwise procurable in advance through the exercise of due diligence; (3) that the party seeking production cannot properly prepare for post-trial motions or sentencing without advance inspection; and (4) that the application is made in good faith and is not simply intended as a general “fishing expedition.”
Id.
(citing
Nixon,
We do not opine on the propriety of the government’s second subpoena duces tecum, but we note that the district court has not had the opportunity to apply the Nixon factors in the sentencing context. The government concedes that the entry of the defendant’s guilty pleas has cаused its *575 purposes for seeking the Skadden Documents to shift. It no longer needs the materials to establish guilt; rather, it would like to use the materials to develop arguments at sentencing relevant to application of the United States Sentencing Guidelines. Quellоs argues that its objections to the production of the Skadden Documents have also altered. The basis for the district court’s order compelling compliance with the original subpoena duces tecum no longer exists. Reliance on the original triаl subpoena would be improper.
IV
Therefore, we dismiss this appeal as moot, vacate the district court’s order compelling compliance with the April 2010 subpoena duces tecum, and remand for further proceedings consistent with this opinion. Wе need not, and do not, reach any other question presented by the parties.
DISMISSED, VACATED, AND REMANDED WITH INSTRUCTIONS.
Notes
. Despite having served the second subpoena on Skadden, the government has yet to file a motion with the district court seeking issuanee of a pre-sentencing subpoenа duces tecum.
. Were Skadden still representing Quellos, Skadden would be deemed an interested party and the
Perlman
rule would not apply, but because Skadden is Quellos's
former
counsel, Skadden is disinterested and we have jurisdiction under
Perlman. See In re Grand Jury Subpoena Issued to Bailin,
.
But cf. Wilson v. O’Brien,
. The government’s citations to
United States v. Zolin,
