OPINION & ORDER

Vernon S. Broderick, United States District Judge

Before me is Defendants' motion to withdraw the bankruptcy reference pursuant to 28 U.S.C. § 157(d), (Doc. 1), as well as Defendants' motion for leave to appeal pursuant to 28 U.S.C. §158(a), (Doc. 25-2; see also In Re: Bernard L. Madoff Investment Securities LLC, 19-cv-812, Doc. 1).1 Because Defendants filed customer claims against the bankruptcy estate, Defendants "trigger[ed] the process of `allowance and disallowance of claims,' thereby subjecting [themselves] to the bankruptcy court's equitable power." Langenkamp v. Culp, 498 U.S. 42, 44, 111 S.Ct. 330, 112 L.Ed.2d 343 (1990) (citing Granfinanciera, S.A. v. Nordberg, 492 U.S. 33, 58-59 n.14, 109 S.Ct. 2782, 106 L.Ed.2d 26 (1989)). Accordingly, Defendants' motions are DENIED.

I. Factual Background and Procedural History2

The instant case stems from a Securities Investor Protection Act ("SIPA"), 15 U.S.C. §§ 78aaa et seq., liquidation proceeding brought by the Securities Investor Protection Corporation against Bernard L. Madoff Investment Securities LLC ("BLMIS"). The liquidation proceeding was commenced on December 15, 2008 when Judge Louis L. Stanton referred the case to the Bankruptcy Court pursuant to SIPA § 78eee(b)(4). (See Sec. Inv'r Prot. Corp. v. BLMIS, Adv. Pro. No. 08-01789 (SMB) (Bankr. S.D.N.Y. Dec. 15, 2008), ECF No. 1.) On December 23, 2008, the Bankruptcy Court entered a claims procedure order, prescribing the procedure for BLMIS customers to file customer claims against the estate. (See Id. at ECF No. 12.) Pursuant to this order, on June 16, 2009, Defendants Michael Mann, Meryl Mann, and BAM L.P. served Trustee Irving H. Picard (the "Trustee") with statements of claims, seeking to recover purported outstanding balances in their BLMIS accounts. See Sec. Inv'r Prot. Corp. v. BLMIS, 597 B.R. 466, 472 (Bankr. S.D.N.Y. 2019). The Trustee denied the Defendants' claims, explaining that no securities were ever purchased for their BLMIS accounts, and that the Defendants withdrew more than they deposited into their accounts over the lives of the accounts. Id. In response, on September 25, 2009, Defendants filed objections to the Trustee's determinations. (See Sec. Inv'r Prot. Corp., Adv. Pro. No. 08-01789 (SMB), ECF Nos. 461, 815.)

The Trustee filed his original complaint commencing the adversary proceeding against Defendants on November 30, 2010. See Sec. Inv'r Prot. Corp., 597 B.R. at 472; (Picard v. Bam L.P., et al., Adv. Pro. No. 10-04390 (SMB) (Bankr. S.D.N.Y. Nov. 30, 2010), ECF No. 1). The complaint asserted, in relevant part, claims pursuant to sections 548(a) and 550(a) of the United States Bankruptcy Code, 11 U.S.C. § 101, et seq, seeking to avoid and recover the alleged excess transfers from Defendants' BLMIS accounts to Defendants. Id. After the adversary proceeding was commenced, the Bankruptcy Court overruled Defendants' objection to the Trustee's calculation of Defendants' net equity, see Sec. Inv'r Prot. Corp. v. BLMIS, 496 B.R. 744, 761 (Bankr. S.D.N.Y. 2013), which was appealed to and affirmed by the Second Circuit, see In re BLMIS, 779 F.3d 74 (2d Cir. 2015). The Supreme Court denied a petition for a writ of certiorari later that year. See Peshkin v. Picard, ___ U.S. ___, 136 S.Ct. 218, 193 L.Ed.2d 130 (2015).

Discovery in the Trustee's adversary proceeding concluded in February of 2015, and on September 26, 2018, the Bankruptcy Court held a pre-trial conference in the proceeding and set a trial date for December 3, 2018. See Sec. Inv'r Prot. Corp., 597 B.R. at 472; (Picard, Adv. Pro. No. 10-04390, ECF No. 110). At the conference, Defendants expressed their desire to withdraw their customer claims and file a motion to withdraw the bankruptcy reference for lack of jurisdiction. Sec. Inv'r Prot. Corp., 597 B.R. at 472. Bankruptcy Judge Bernstein invited briefing on whether the withdrawal of Defendants' customer claims on the eve of trial would deprive the Bankruptcy Court of jurisdiction to decide the Trustee's §§ 548(a) and 550(a) claims, which the parties later submitted. (See Picard, Adv. Pro. No. 10-04390, ECF Nos. 131, 132, 137.)

On October 26, 2018, Defendants filed a motion to withdraw the bankruptcy reference pursuant to 28 U.S.C. § 157(d). (Doc. 1.)3 At a November 28, 2018 hearing, Bankruptcy Judge Bernstein granted a stay of the scheduled trial pending my ruling on the motion to withdraw. (See Picard, Adv. Pro. No. 10-04390, ECF No. 130.) Additionally, Bankruptcy Judge Bernstein heard Defendants' motion to withdraw the customer claims, and on December 20, 2018, entered an order granting a withdrawal of Defendants' claims with prejudice. (Id. at ECF Nos. 130, 138.) However, on January 18, 2019, Bankruptcy Judge Bernstein entered his Memorandum Decision and Order Upholding Court's Equitable Jurisdiction, rejecting Defendants' arguments that the voluntary withdrawal of their customer claims on the eve of trial deprived the Bankruptcy Court of jurisdiction over the Trustee's claims. Sec. Inv'r Prot. Corp. v. BLMIS, 597 B.R. at 472.

On January 28, 2019, Defendants filed their motion for leave to appeal the decision pursuant to 28 U.S.C. §158(a). (Doc. 25-2; see also In Re: BLMIS, 19-cv-812, Doc. 1.) Finally, on January 10, 2020, the parties notified me that Bankruptcy Judge Bernstein has since granted in part and denied in part the Trustee's motion for summary judgment on its §§ 548(a) and 550(a) claims. (Docs. 26, 27.)

II. Legal Standards

A. Motion to Withdraw

District courts have "original but not exclusive jurisdiction" over all bankruptcy proceedings. See 28 U.S.C. § 1334(b).4 In this district, all proceedings arising under Title 11 of the United States Code are automatically referred to the United States Bankruptcy Court for the Southern District of New York. See Amended Standing Order of Reference, M10-468 (S.D.N.Y. Jan. 31, 2012) (Preska, C.J.) (referring all bankruptcy matters to the bankruptcy court pursuant to 28 U.S.C. § 157(a)). Once a Title 11 proceeding has been referred to the bankruptcy court, the district court's authority to withdraw the reference is governed by 28 U.S.C. § 157, which sets forth the standards for mandatory and permissive withdrawal. 28 U.S.C. § 157(d) provides, "[t]he district court may withdraw, in whole or in part, any case or proceeding referred under this section, on its own motion or on timely motion of any party, for cause shown." Section 157 does not define the term "cause." See S. St. Seaport Ltd. P'ship v. Burger Boys, Inc. (In re Burger Boys, Inc.), 94 F.3d 755, 762 (2d Cir. 1996).

In deciding whether there is "cause" to withdraw a bankruptcy reference, the Second Circuit has outlined several factors a district court should consider, including "whether the claim or proceeding is core or non-core, whether it is legal or equitable, and considerations of efficiency, prevention of forum shopping, and uniformity in the administration of bankruptcy law." In re Orion Pictures Corp., 4 F.3d 1095, 1101 (2d Cir. 1993). A claim qualifies as a "core" bankruptcy claim where it "invokes a substantive right under [T]itle 11, or could only arise in the context of a bankruptcy case." Joremi Enters., Inc. v. Hershkowitz (In re New 118th LLC), 396 B.R. 885, 890 (Bankr. S.D.N.Y. 2008). "Section 157. . . contains a non-exhaustive list of `core proceedings,'" In re CBI Holding Co., 529 F.3d 432, 460 (2d Cir. 2008), which includes the "allowance or disallowance of claims against the estate" and "proceedings to determine, avoid, or recover fraudulent conveyances." 28 U.S.C. §§ 157(b)(2)(B), (H). Although withdrawal of a reference is less often appropriate where a claim falls within a bankruptcy court's core jurisdiction, "[a]fter the District Court `makes the core/non-core determination, it should weigh questions of efficient use of judicial resources, delay and costs to the parties, uniformity of bankruptcy administration, the prevention of forum shopping, and other related factors,' such as the presence of a jury demand." In re Lehman Bros. Holdings Inc., 18 F.Supp.3d 553, 557 (S.D.N.Y. 2014) (quoting In re Orion Pictures Corp., 4 F.3d at 1101). "The moving party bears the burden of demonstrating that permissive withdrawal of the reference is warranted," id. (citing Nisselson v. Salim (In re Big Apple Volkswagon, LLC), No. 12 Civ. 92(PGG), 2013 WL 1245548, at *3 (S.D.N.Y. Mar. 25, 2013)), and the Court has "broad discretion to withdraw the reference for cause," In re Haynes, Nos. 14 CV 4171(VB), 14 CV 6183(VB), 14 CV 7525 (VB), 2015 WL 862061, at *2 (S.D.N.Y. Mar. 2, 2015) (internal quotation marks omitted).

In Stern v. Marshall, 564 U.S. 462, 131 S.Ct. 2594, 180 L.Ed.2d 475 (2011), the Supreme Court recognized that "statutory authority to enter judgment" on a "core" claim under § 157 does not automatically give a bankruptcy court "the constitutional authority to do so." 564 U.S. at 469, 131 S.Ct. 2594; see also Exec. Benefits Ins. Agency v. Arkison, 573 U.S. 25, 35, 134 S.Ct. 2165, 189 L.Ed.2d 83 (2014) ("Stern made clear that some claims labeled by Congress as `core' may not be adjudicated by a bankruptcy court in the manner designated by § 157(b)."). "Thus, `post-Stern, district courts must further analyze whether the nature of the core proceeding allows the [b]ankruptcy [c]ourt to issue a final judgment.'" Picard for Liquidation of BLMIS v. Saren-Lawrence, Nos. 17 Civ. 5162 (GBD), 17 Civ. 5163 (GBD), 2018 WL 2383141, at *3 (S.D.N.Y. May 15, 2018), reconsideration denied sub nom. Picard for Liquidation of BLMIS v. Saren-Lawrence, Nos. 17 Civ. 5162 (GBD), 17 Civ. 5163 (GBD), 2018 WL 4659476 (S.D.N.Y. Sept. 11, 2018) (quoting In re Madison Bentley Assocs., LLC, No. 16 Civ. 1083 (GBD), 2016 WL 5793990, at *3 (S.D.N.Y. Sept. 27, 2016)).

The "Supreme Court set forth three instances where a bankruptcy court may adjudicate finally a claim at issue: (1) if the claim involves a public right; (2) if the process of adjudicating the creditor's proof of claim would resolve a counterclaim; or (3) if the parties consent to final adjudication by the bankruptcy court."5 Dynegy Danskammer, LLC v. Peabody COALTRADE Int'l Ltd., 905 F.Supp.2d 526, 530 (S.D.N.Y. 2012) (citing Stern, 564 U.S. at 482, 493, 497, 131 S.Ct. 2594); cf. In re Arbco Capital Mgmt., LLP, 479 B.R. 254, 262 (S.D.N.Y. 2012) (explaining that "the [c]ourt consider[ed] the three factors emphasized in Stern: 1) whether the defendant filed a proof of claim in the bankruptcy proceeding, 2) whether the right is public or private, and 3) whether the parties consented to have the bankruptcy court enter final judgment"). When the bankruptcy court lacks constitutional authority over a core claim, however, withdrawal of the reference is still not necessary as the bankruptcy court can "simply treat[] the. . . claim as non-core" and proceed under § 157(c)(1). Executive Benefits Ins. Agency, 573 U.S. 25, 36, 134 S.Ct. 2165, 189 L.Ed.2d 83 (2014). In such a circumstance, the "bankruptcy court should hear the proceeding and submit proposed findings of fact and conclusions of law to the district court for de novo review and entry of judgment." Id.

B. Motion for Leave to Appeal

28 U.S.C. § 158(a) grants district courts jurisdiction to hear appeals from interlocutory orders issued by bankruptcy courts "with leave of the court." "Since interlocutory appeals are disfavored, [t]he party seeking an interlocutory appeal has the burden of showing `exceptional circumstances.'" Buckskin Realty Inc. v. Greenberg, 552 B.R. 40, 43 (E.D.N.Y. 2016) (quoting In re St. Clair, No. 13-MC-1057, 2014 WL 279850, at *3 (E.D.N.Y. Jan. 21, 2014)).

"Neither the Bankruptcy Code nor the Federal Rules of Bankruptcy Procedure provide precise standards for district courts to follow in determining whether to grant leave to appeal an interlocutory order." Id. "It has been recognized, however, that the decision is within the district court's sound discretion and that the court may apply, by analogy, the standards set forth in 28 U.S.C. § 1292(b) governing the appealability of interlocutory decisions of district court judges." Id. (quoting 40 CPS Assocs., LLC v. The Villano Family Ltd. P'ship, No. 15 CV 2055(SJF), 2015 WL 7455526, at *18 (E.D.N.Y. Nov. 23, 2015) (quoting In re Club Ventures Invs. LLC, 507 B.R. 91, 97 (S.D.N.Y. 2014))). Under those standards, a district court may certify an interlocutory order for appeal when it is "of the opinion that such order involves a controlling question of law as to which there is substantial ground for difference of opinion and that an immediate appeal from the order may materially advance the ultimate termination of the litigation." 28 U.S.C. § 1292(b).

III. Discussion

A. Motion to Withdraw

1. Orion Factors

The Orion factors support denying Defendants' motion to withdraw. First, with respect to whether the Trustee's fraudulent conveyance action is core or non-core, 28 U.S.C. § 157(b)(2)(H) unambiguously labels as core "proceedings to determine, avoid, or recover fraudulent conveyances." See also Picard for Liquidation of BLMIS, 2018 WL 2383141, at *5 ("[A]ctions to avoid fraudulent transfers are `core' proceedings." (citing 28 U.S.C.A. § 157(b)(2)(H))). Thus, I find that the Trustee's adversary proceeding pursuant to §§ 548 and 550 is a core proceeding.

Second, the claims at issue are equitable in nature given Defendants' filing of a proof of claim.6 As the Supreme Court has made clear, the filing of a proof of claim "triggers the process of `allowance and disallowance of claims,' thereby subjecting [a creditor] to the bankruptcy court's equitable power." Langenkamp, 498 U.S. at 44, 111 S.Ct. 330 (1990) (citing Granfinanciera, 492 U.S. at 58-59 n.14, 109 S.Ct. 2782); see also In re CBI Holding Co., 529 F.3d at 466 (stating that "a creditor who files such a claim subjects itself to the bankruptcy court's equitable jurisdiction in proceedings affecting that claim."); In re Residential Capital, LLC, 698 F. App'x 16, 17 (2d Cir. 2017) (summary order) ("When Boyd filed a proof of claim with the bankruptcy court in 2011, he invoked the special rules of bankruptcy concerning objections to the claim." (internal quotation marks omitted)); In re Millenium Seacarriers, Inc., 419 F.3d 83, 98 (2d Cir. 2005) (collecting cases and holding that "parties . . . who submit proofs of claim and thereafter actively litigate in the bankruptcy court without contesting personal jurisdiction can transform a non-core proceeding into a core one"). "As [the Second Circuit] recognized in Germain v. National Bank, 988 F.2d 1323 (2d Cir. 1993), filing a proof of claim is a necessary but not sufficient condition to forfeiting a creditor's right to a jury trial" regarding objections to the claim. In re CBI Holding Co., 529 F.3d at 466. "Rather, a creditor loses its jury trial right only with respect to claims whose resolution affects the allowance or disallowance of the creditor's proof of claim or is otherwise so integral to restructuring the debtor-creditor relationship." Id.; accord Stern, 564 U.S. 462, 499, 131 S.Ct. 2594 (stating in the Article III context that "Congress may not bypass Article III simply because a proceeding may have some bearing on a bankruptcy case; the question is whether the action at issue stems from the bankruptcy itself or would necessarily be resolved in the claims allowance process."). However, "`[b]ecause 11 U.S.C. § 502(d) provides that the claims of pre-petition fraudulent transfers may be disallowed,' an adversary proceeding that invokes `11 U.S.C. § 548 is part of the claims allowance process . . . and does not carry a jury trial right.'"7 Picard for Liquidation of BLMIS, 2018 WL 2383141, at *4 (quoting Glinka v. Abraham & Rose Co., No. 2:93-CV-291, 1994 WL 905714, at *11 (D. Vt. June 6, 1994)); see also Katchen v. Landy, 382 U.S. 323, 329, 86 S.Ct. 467, 15 L.Ed.2d 391 (1966) ("This power to allow or to disallow claims includes full power to inquire into the validity of any alleged debt or obligation of the bankrupt upon which a demand or a claim against the estate is based. This is essential to the performance of the duties imposed upon it."8 (internal quotation marks omitted)); In re CBI Holding Co., 529 F.3d at 467-68 (emphasizing that "[a]n action that bears directly on the allowance of a claim is integrally related to the equitable reordering of debtor-creditor and creditor-creditor relations. If an equitable reordering cannot be accomplished without resolution of what would otherwise be a legal dispute, then that dispute becomes an essential element of the broader equitable controversy." (quoting Germain, 988 F.2d at 1329)). Indeed, the Second Circuit has held that where "defendants filed a proof of claim against the [bankruptcy] estate" and, "[i]n order to rule on that claim, the Bankruptcy Court was required to first resolve [a] fraudulent transfer issue," the Bankruptcy Court could adjudicate both. In re BLMIS, 740 F.3d 81, 95 (2d Cir. 2014); see also In re: FKF 3, LLC, No. 13-CV-3601 (KMK), 2016 WL 4540842, at *11 (S.D.N.Y. Aug. 30, 2016) ("Because § 502(d) requires that any creditor claim must be disallowed if the entity . . . is the transferee of a transfer avoidable under, inter alia, §[] 548 (and recoverable under § 550), unless the entity has turned over the property, the causes of action . . . brought pursuant to §§[] 548[] and 550 . . . would `necessarily be resolved in the claims allowance process,' Stern, 564 U.S. at 499, 131 S.Ct. 2594, and thus the Bankruptcy Court can constitutionally enter final judgment on those claims."). Thus, in considering the second Orion factor, I conclude that the Trustee's claims are equitable in nature.9

Finally, with respect to considerations of efficiency, costs, and uniformity, I find that withdrawal of the bankruptcy reference in this case would severely delay resolution of the avoidance action, would strip determination of core issues from a forum that has developed significant expertise over this SIPA liquidation, and would risk producing inconsistent outcomes given Bankruptcy Judge Bernstein's involvement in "numerous [other] adversary proceedings to avoid and recover transfers BLMIS made to certain customers," Sec. Investor Prot. Corp. v. BLMIS, 568 B.R. 203, 205 (S.D.N.Y. 2017). As outlined above, this liquidation proceeding was commenced on December 15, 2008 when Judge Louis L. Stanton referred the case to the Bankruptcy Court pursuant to SIPA § 78eee(b)(4). (See Sec. Inv'r Prot. Corp., Adv. Pro. No. 08-01789 (SMB), ECF No. 1.) I agree with the observation of other judges in this district that Bankruptcy Judge Bernstein "has great familiarity with the facts regarding the BLMIS Estate." Picard for Liquidation of BLMIS, 2018 WL 2383141, at *6; see also Shapiro v. JPMorgan Chase & Co., Nos. 11 Civ. 8331(CM) (MHD), 11 Civ. 7961(CM), 2014 WL 1224666, at *2 (S.D.N.Y. Mar. 24, 2014) ("Judge Bernstein's intimate familiarity with the Madoff matter causes this court to view his conclusions with great deference."). These considerations especially disfavor withdrawal here given the procedural posture of this case, as Bankruptcy Judge Bernstein has overseen the Defendants' and Trustee's claims for over a decade, and already considered and granted in part and denied in part the Trustee's motion for summary judgment on the §§ 548 and 550 claims. (See Doc. 8-1.)

Accordingly, I find that Defendants have failed to demonstrate that the Orion factors favor withdrawal of the bankruptcy reference under 28 U.S.C. § 157(d).

2. Stern Analysis

I next assess whether, after Stern, the nature of the core proceeding allows the Bankruptcy Court to issue a final judgment on the Trustee's claims consistent with Article III, and conclude that the Bankruptcy Court has constitutional authority to adjudicate the Trustee's avoidance claims because such claims "stem[] from the bankruptcy itself or would necessarily be resolved in the claims allowance process" triggered by Defendants. Stern, 564 U.S. at 499, 131 S.Ct. 2594.10 Defendants' only argument to the contrary is that the voluntary withdrawal of their proof of claim on December 20, 2018 reversed the authority vested in the Bankruptcy Court to decide the Trustee's claims. This argument fails for the reasons outlined by Bankruptcy Judge Bernstein in his January 8, 2019 opinion, and for the additional reasons stated below.

In his opinion, Bankruptcy Judge Bernstein noted that the majority of cases to have considered Defendants' argument have concluded that the withdrawal of a proof of claim does not affect a Bankruptcy Court's authority to decide a Trustee's claim. See Sec. Inv'r Prot. Corp., 597 B.R. at 477 (collecting cases). I find these cases to be persuasive, because at the moment Defendants filed claims against the bankruptcy estate, Defendants "trigger[ed] the process of `allowance and disallowance of claims,' thereby subjecting [themselves] to the bankruptcy court's equitable power." Langenkamp, 498 U.S. at 44, 111 S.Ct. 330 (citing Granfinanciera, S.A., 492 U.S. at 58-59 and n.14, 109 S.Ct. 2782)); see also Katchen, 382 U.S. at 333 n.9, 86 S.Ct. 467 ("[H]e who invokes the aid of the bankruptcy court by offering a proof of claim and demanding its allowance must abide the consequences of that procedure."). Accordingly, when Defendants were "met, in turn, with a[n] [avoidance] action from the trustee, that action bec[a]me[] part of the claims-allowance process which is triable only in equity." Langenkamp, 498 U.S. at 44, 111 S.Ct. 330 (emphasis added); see also Travellers Int'l AG v. Robinson, 982 F.2d 96, 100 (3d Cir. 1992) ("The Supreme Court's holdings in Granfinanciera and Langenkamp leave no doubt that the equitable jurisdiction of the bankruptcy court is exclusive when its jurisdiction has been invoked by the filing of a claim."). In other words, as the Second Circuit has described this process, when "[a] dispute [is] part of the claims-allowance process . . . the legal dispute has been transformed into an equitable issue." Germain, 988 F.2d at 1330; see also In re WorldCom, Inc., 378 B.R. 745, 755 (Bankr. S.D.N.Y. 2007) ("The disallowance of [Defendants'] claim simply resolved [Defendants'] part of the claims-allowance process, it did not end the process.").

Bankruptcy Judge Bernstein's jurisdictional opinion cited multiple district court and bankruptcy court opinions reiterating this reasoning, see Sec. Inv'r Prot. Corp., 597 B.R. at 477 (collecting cases), but this reasoning also finds support in the decisions of circuits outside the Second Circuit. For example, in Smith v. Dowden, the Eighth Circuit held that "the successful withdrawal of a claim pursuant to Fed. R. Bankr. P. 3006 prior to the trustee's initiation of an adversarial proceeding renders the withdrawn claim a legal nullity and leaves the parties as if the claim had never been brought." Smith v. Dowden, 47 F.3d 940, 943 (8th Cir. 1995). Although Defendants rely on cases that use this "legal nullity" language to argue for withdrawal here, see, e.g., In re Cruisephone, Inc., 278 B.R. 325, 333 (Bankr. E.D.N.Y. 2002) ("[U]pon the successful withdrawal of a proof of claim pursuant to Bankruptcy Rule 3006, the withdrawn proof of claim is a legal nullity and the parties are left as if the claim has never been filed."), Dowden explicitly stated that "the fact the motion [to withdraw] was filed prior to the initiation of the adversarial proceeding [was] essential to [its] holding," id., 47 F.3d at 943 n.5. See also Seven Ctys. Servs., Inc. v. NextGen Healthcare Info. Sys., Inc., No. 3:14CV330-S, 2014 WL 3941789, at *2 (W.D. Ky. Aug. 12, 2014) ("A creditor may retain its right to a jury trial only if the Proof of Claim is withdrawn prior to the filing of an adversary proceeding against it." (citing In re Christou, 448 B.R. 859, 862 (N.D. Ga. 2011) (relying on the reasoning in Dowden))). In the instant case, however, Defendants sought to withdraw their claim nearly a decade after they initially served their claim on the Trustee and approximately nine years after they were named in the Trustee's adversarial proceeding. In addition to Dowden, the Third Circuit's Travellers International AG v. Robinson opinion described the Supreme Court's Langenkamp decision as affording the Bankruptcy Court broad equity jurisdiction when creditor claims are filed:

Travellers Int'l AG v. Robinson, 982 F.2d 96, 99 (3d Cir. 1992); see also EXDS, Inc. v. RK Elec., Inc. (In re EXDS, Inc.), 301 B.R. 436, 439-40 (Bankr. D. Del. 2003) (applying Travellers Int'l AG and stating that the claimant had "lost its right to a jury trial because it elected to participate in the equity court proceeding"). Given the unequivocal language of Langenkamp and Travellers as to the effect of filing a proof of claim, I do not believe that a creditor can, for strategic reasons, reverse the result it triggered by filing a proof of claim by later withdrawing the claim."). Stern did nothing to diminish Langenkamp's view of the Bankruptcy Court's equitable jurisdiction:

Stern, 564 U.S. at 497, 131 S.Ct. 2594; see also U.S. Bank Nat. Ass'n v. Verizon Commc'ns, Inc., 761 F.3d 409, 424-25 (5th Cir. 2014) ("It is clear from Stern that Langenkamp is still good law. Stern did not displace Langenkamp; in fact, it took great care to distinguish the facts before it from the facts in Langenkamp."). Finally, the Fifth Circuit recently opined that a fraudulent transfer action brought by a trustee would necessarily be resolved in the claims-allowance process by virtue of § 502(d) despite the fact that the creditor's claim was "provisionally resolved" but subject to reopen. U.S. Bank Nat. Ass'n, 761 F.3d at 419-20 ("The bankruptcy court has expressly permitted Verizon to re-open Claim No. 2450 depending on the outcome of this litigation. Thus, the resolution of the fraudulent transfer claims before us will directly impact the claims-allowance process."). The Fifth Circuit noted, however, that "even absent the bankruptcy court's express order" permitting re-opening of the claim, "it was clear that the resolution of [the creditor's claim] in the bankruptcy court would have required the resolution of the Trustee's fraudulent transfer claim." Id. at 420 n. 5. These cases demonstrate that Stern's "necessarily be resolved" language, 564 U.S. at 499, 131 S.Ct. 2594, should not be read as literally as Defendants suggest.11

Two opinions from this district could be read as adopting Defendants' argument that the Bankruptcy Court's equitable jurisdiction is contingent on the continued presence of a contested proof of claim, and is not completely ascertainable at the time of filing. The first, Picard v. Estate of Madoff, evinced this view by interpreting Stern's "necessarily be resolved" language in a literal sense as Defendants suggest I should. See 464 B.R. 578, 586 (S.D.N.Y. 2011) ("[T]he Trustee's common law claims might still be resolved as part of `the allowance or disallowance' of Mark's and Andrew's proofs of claims, and it would be premature to insist that the common law claims be litigated in an Article III court."). Because the court found that "[i]t [was] far too early in th[e] proceeding" to determine whether the trustee's common law counterclaims would be resolved through resolution of the creditors' proofs of claims, the court rejected the creditors' jurisdictional argument under Stern. Id. at 585-86. The second opinion, In re: FKF 3, LLC, stated that Stern's "justification for the `necessarily resolved' rule is practical: where a Trustee's counterclaims are resolved by the bankruptcy court in the process of adjudicating a creditor's proof of claim, the creditor has `no basis' for demanding a second adjudication of those claims in an Article III court." 2016 WL 4540842, at *8 n.3 (quoting Stern, 564 U.S. at 496, 131 S.Ct. 2594). The opinion thus adopted the view that the Bankruptcy Court's constitutional authority to enter judgment shifts depending on the "precise positions of the parties and the evidence presented" at any given stage in the proceeding. Id. (quoting Ralph Brubaker, A "Summary" Statutory & Constitutional Theory of Bankruptcy Judges' Core Jurisdiction after Stern v. Marshall, 86 Am. Bankr. L.J. 121, 177-78 (2012)).

I find these cases to be distinguishable and unpersuasive. Stern itself suggests that a Bankruptcy Court can determine whether a counterclaim will necessarily be resolved through the claims-allowance process "[f]rom the outset" of that process. Stern, 564 U.S. at 498, 131 S.Ct. 2594 ("From the outset, it was clear that, even assuming the Bankruptcy Court would . . . rule in Vickie's favor . . ., the court could not enter judgment for Vickie unless the court additionally ruled on [other] questions" not presented by the creditor's proof of claim). In fact, Stern emphasized that in the case before it, "there [] was never reason to believe that the process of ruling on [the] proof of claim would necessarily result in the resolution of [the] counterclaim." Id. at 498, 131 S.Ct. 2594 (emphasis added). Here, unlike in Picard v. Estate of Madoff and In re: FKF 3, LLC—which involved the Bankruptcy Court's authority to adjudicate state common law counterclaims—given the nature of § 502(d), it was understood from the moment the Trustee's adversarial proceeding was filed that resolution of Defendants' customer claims necessitated the prior resolution of the Trustee's claims. Indeed, this is the very substance and nature of the "the process of `allowance and disallowance of claims,'" that Defendants "triggered" by filing their claims. Langenkamp, 498 U.S. at 44, 111 S.Ct. 330 (citing Granfinanciera, S.A., 492 U.S. at 58-59 n.14, 109 S.Ct. 2782).12 Nothing in Stern suggests that the Bankruptcy Court's equitable jurisdiction is negated by the voluntary withdrawal of a creditor's claim nine years after the filing of an adversarial proceeding that, under federal bankruptcy law, would necessarily disallow the claim if successful.

It is important to note that the animating concern in Stern was constitutional: that "Article III could neither serve its purpose in the system of checks and balances nor preserve the integrity of judicial decisionmaking if the other branches of the Federal Government could confer the Government's `judicial Power' on entities outside Article III." Stern, 564 U.S. at 484, 131 S.Ct. 2594. As such, Stern, like the earlier-decided Northern Pipeline Construction Co. v. Marathon Pipe Line Co., 458 U.S. 50, 102 S.Ct. 2858, 73 L.Ed.2d 598 (1982), scrutinized the extent to which Congress authorized the Bankruptcy Courts, pursuant to 25 U.S.C. § 157(b)(2)(C), to decide "`[a]ll matters of fact and law in whatever domains of the law to which' a [debtor's] counterclaim may lead." Stern, 564 U.S. at 486, 131 S.Ct. 2594 (quoting Northern Pipeline Constr. Co., 458 U.S. at 91, 102 S.Ct. 2858 (Rehnquist, J., concurring in judgment)); see also id. at 477, 131 S.Ct. 2594 ("[D]esignating all counterclaims as `core' proceedings raises serious constitutional concerns."). Congress's authorization raised particular constitutional concern in Stern and Northern Pipeline as it asked the Bankruptcy Courts to enter judgment on counterclaims involving traditional contract and tort actions arising under state law, implicating not just the separation of powers, but concerns about federalism. See id. at 494, 131 S.Ct. 2594. Here, however—as I have stated above—the Trustee's claims are "federal claims under bankruptcy law, which would be completely resolved in the bankruptcy process of allowing or disallowing claims." Id. at 487, 131 S.Ct. 2594. Thus, as Stern itself recognized, the constitutional concerns regarding Congress's reallocation of the judicial power are not as present in this case, where the Trustee's rights arise from Congress's exercise of its own constitutional role in the administration of bankruptcy. See U.S. Const. art. I, § 8, cl. 4 ("The Congress shall have Power . . . To establish. . . uniform Laws on the subject of Bankruptcies throughout the United States. . . .").

Moreover, when assessing the contours of Article III's "case or controversy" requirement, the Second Circuit has observed that "a legal controversy is not like an electrical circuit, such that a court's power switches off as soon as" a controversy is mooted. Klein on behalf of Qlik Techs., Inc. v. Qlik Techs., Inc., 906 F.3d 215, 223 (2d Cir. 2018), cert. dismissed sub nom. Cadian Capital Mgmt., LP v. Klein, ___ U.S. ___, 139 S.Ct. 1406, 203 L.Ed.2d 633 (2019). But this is the exact view of jurisdiction that Defendants propose. The Second Circuit's observation regarding mootness should similarly guide the resolution of Stern's concern regarding the allocation of Article III's "judicial power." For, just as Article III's retention of the judicial power "is `an inseparable element of the constitutional system of checks and balances,'" Stern, 564 U.S. at 482-83, 131 S.Ct. 2594 (citing Northern Pipeline Constr. Co., 458 U.S. at 78, 102 S.Ct. 2858, so too does "the `case or controversy' requirement define[] with respect to the Judicial Branch the idea of separation of powers on which the Federal Government is founded," Allen v. Wright, 468 U.S. 737, 750, 104 S.Ct. 3315, 82 L.Ed.2d 556 (1984).

3. Defendants' Proposed Jurisdictional Rule

In addition to my rejection of Defendants' reading of Stern, other considerations counsel against adopting Defendants' proposed jurisdictional rule that the Bankruptcy Court's authority is contingent on the continued presence of a contested proof of claim, and is not completely ascertainable at the time of filing. First, adopting Defendants' jurisdictional rule would permit gamesmanship and the sandbagging of a bankruptcy Trustee after she expended resources and time litigating only to have a putative creditor pull the plug on its proof of claim when faced with a potential adverse ruling and/or on the eve of trial. See In re EXDS, Inc., 301 B.R. 436, 440 (Bankr. D. Del. 2003) ("Given the unequivocal language of Langenkamp and Travellers as to the effect of filing a proof of claim, I do not believe that a creditor can, for strategic reasons, reverse the result it triggered by filing a proof of claim by later withdrawing the claim."); cf. In re Kirwan Offices S.a.R.L., 792 Fed.Appx. at 103 (overriding Article III's jurisdictional "barrier to the bankruptcy court's entry of a final judgment" based on "[p]olicies in favor of `increasing judicial efficiency and checking gamesmanship" (citing Sharif, 135 S. Ct. at 1948)). Bankruptcy Judge Bernstein highlighted this exact concern during the September 28, 2018 hearing, stating:

(Pre-Trial Conf. Tr. 33:13-24, Picard, Adv. Pro. No. 10-04390 (SMB), ECF No. 110); see also Sec. Inv'r Prot. Corp., 597 B.R. at 484 ("[T]he defendant-creditor could manipulate the bankruptcy jurisdiction at any time simply by withdrawing the claim. Taking this argument to its logical conclusion, the defendant could seek to withdraw the claim at any time prior to final judgment if the defendant did not like the way the proceedings were unfolding. Here, the Defendants' Claims were pending for nearly ten years, but they sought to withdraw them with prejudice at the Court's invitation only a few days before the trial was scheduled to begin.").

Second, a rule that the Bankruptcy Court's constitutional authority to enter judgment fluctuates in time depending on the "precise positions of the parties and the evidence presented" at any given stage in the proceeding, In re: FKF 3, LLC., 2016 WL 4540842, at *8 (citation omitted), or on whether, in the literal sense, a trustee's claim will be decided through the actual resolution of a creditor's claim, is simply not workable. See In re WorldCom, Inc., 378 B.R. at 755 ("To hold otherwise would have the anomalous result that a creditor waives its jury trial right only if all or a portion of its proof of claim is allowed, yet retains the right if its proof of claim is disallowed in its entirety. In other words, the conversion of the contract dispute from a legal issue to an equitable issue would be temporary and would become permanent only if the proof of claim were allowed in order to offset the contract issue affirmatively raised by the debtor. If not, the creditor would have a right to a jury trial. There is no support for such a finding."). Applying such a rule, a Bankruptcy Court might not learn that it does not have jurisdiction until the end of closing arguments, or worse, while contemplating findings of fact or conclusions of law. However, this same concern underscores why, in the § 502(d) context, a creditor's claim and a trustee's claim are at all times necessarily inextricably intertwined, because the success of the latter claim forecloses the success of the former, leaving no question as to whether the trustee's claim will "necessarily be resolved" through the claims-allowance process.

B. Motion for Leave to Appeal

Because I reject Defendants' arguments in support of their motion to withdraw, I also reject Defendants' arguments in support of their motion for leave to appeal, as these arguments rest on Defendants' interpretation of Stern and their proposed jurisdictional rule, and are substantially similar if not identical to their motion to withdraw arguments. Accordingly, I reject Defendants' contention that there is a substantial difference of opinion on this issue of law, and deny their motion for leave to appeal. Even if Defendants presented more compelling arguments, I find that additional briefing and review of their arguments would not materially advance the resolution of this matter given the delay an appeal would cause at this stage.

IV. Conclusion

For the foregoing reasons, it is hereby:

ORDERED that Defendants' motion to withdraw the bankruptcy reference, (Doc. 1), is DENIED.

IT IS FURTHER ORDERED that Defendants' motion for leave to appeal, (In Re: Bernard L. Madoff Investment Securities LLC, 19-cv-812, Doc. 1), is DENIED.

The Clerk of Court is respectfully directed to terminate the open motion at Document 1 of 18-cv-9916, and close the appeal at In Re: Bernard L. Madoff Investment Securities LLC, 19-cv-812, Doc. 1.

SO ORDERED.