Section 363(m) of the Bankruptcy Code offers powerful protection for good-faith purchasers in bankruptcy sales because it limits appellate review of an approved sale, irrespective of the legal merits of the appeal. Specifically, it provides that the reversal or modification of an order approving the sale of assets in bankruptcy does not affect the validity of the sale to a good-faith purchaser unless the party challenging the sale obtains a stay pending its appeal of the order. That is, section 363(m) renders an appeal "statutorily moot" absent a stay of the sale order.

The practice of conferring "derivative standing" on official creditors' committees or individual creditors to assert claims on behalf of a bankruptcy estate in cases where the debtor or a bankruptcy trustee is unwilling or unable to do so is well-established. However, until recently, Delaware bankruptcy courts have uniformly limited the practice in cases where applicable non-bankruptcy law provides that creditors do not have standing to bring claims on behalf of certain entities.

The Bankruptcy Code does not explicitly authorize the equitable remedy of "substantive consolidation"—i.e., treating the assets and liabilities of two or more related entities as if they belonged to a single, consolidated bankruptcy estate. However, it is well recognized that a bankruptcy court has the authority to order such relief under appropriate circumstances in the exercise of its broad equitable powers when each of the original entities are already debtors subject to the court's jurisdiction.

Federal appellate courts have traditionally applied a "person aggrieved" standard to determine whether a party has standing to appeal a bankruptcy court order or judgment. However, this standard, which requires a direct, adverse, and financial impact on a potential appellant, is derived from a precursor to the Bankruptcy Code and does not appear in the existing statute.

The court-fashioned doctrine of "equitable mootness" has frequently been applied to bar appeals of bankruptcy court orders under circumstances where reversal or modification of an order could jeopardize, for example, the implementation of a negotiated chapter 11 plan or related agreements and upset the expectations of third parties who have relied on the order.

On June 6, 2023, the U.S. Bankruptcy Court for the Southern District of Texas confirmed the chapter 11 plan of bedding manufacturer Serta Simmons Bedding, LLC and its affiliates (collectively, "Serta"). In confirming Serta's plan, the court held that a 2020 "uptier," or "position enhancement," transaction (the "2020 Transaction") whereby Serta issued new debt secured by a priming lien on its assets and purchased its existing debt from participating lenders at a discount with a portion of the proceeds did not violate the terms of Serta's 2016 credit agreement.

Section 546(e) of the Bankruptcy Code's "safe harbor" preventing avoidance in bankruptcy of certain securities, commodity, or forward-contract payments has long been a magnet for controversy. Several noteworthy court rulings have been issued in bankruptcy cases addressing the application of the provision, including application to financial institutions, its preemptive scope, and its application to non-publicly traded securities.

Bankruptcy trustees and chapter 11 debtors-in-possession ("DIPs") frequently seek to avoid fraudulent transfers and obligations under section 544(b) of the Bankruptcy Code and state fraudulent transfer or other applicable nonbankruptcy laws because the statutory "look-back" period for avoidance under many nonbankruptcy laws exceeds the two-year period governing avoidance actions under section 548.

The finality of asset sales and other transactions in bankruptcy is an indispensable feature of U.S. bankruptcy law designed to maximize the value of a bankruptcy estate as expeditiously as possible for the benefit of all stakeholders. To promote such finality, section 363(m) of the Bankruptcy Code prohibits reversal or modification on appeal of an order authorizing a sale or lease to a "good-faith" purchaser or lessee unless the party challenging the sale obtains a stay pending appeal. What constitutes "good faith" has sometimes been disputed by the courts.

Since May 2023, the U.S. Supreme Court has issued three decisions addressing or potentially impacting issues of bankruptcy law. These included rulings concerning the abrogation of sovereign immunity for Native American tribes under the Bankruptcy Code, and for instrumentalities of Puerto Rico under a similar statute enacted in 2016 allowing the Commonwealth to restructure its debts. The Court also handed down an opinion concerning a homeowner's entitlement to the surplus proceeds of a real estate tax foreclosure sale.