Mullane v. Central Hanover Tr. Co.

Holding that due process requires a hearing "appropriate to the nature of the case"

Erie R. Co. v. Tompkins

Holding that state law governs substantive issues and federal law governs procedural issues

In re Prudential Insurance Company

Holding the district court acted well within its discretion in denying an objector's request for discovery where the objector was able to present his arguments to the court during the fairness hearing and where the court found the objector "had ample opportunity to avail himself of the substantial discovery provided to Lead Counsel but failed to do so, and that additional discovery was unnecessary because [the objector] focused primarily on legal issues"

Guaranty Trust Co. v. York

Holding that federal courts sitting in diversity should apply state law that determines the outcome of the case

Ashwander v. Valley Authority

Holding that the "Court will not pass upon a constitutional question although properly presented by the record, if there is also present some other ground upon which the case may be disposed of"

Hansberry v. Lee

Holding that plaintiffs seeking to enforce an agreement cannot represent class members who do not want it enforced

United States v. Paramount Pictures

Holding that an agreement among five producers of motion pictures and their affiliates to share profits according to prearranged percentages was anticompetitive

Deckert v. Independence Corp.

Holding that preliminary injunction was warranted where "the bill state[d] a cause [of action] for equitable relief "

Sam Fox Publishing Co. v. U.S.

Denying intervention as of right absent a claim of "bad faith or malfeasance on the part of the Government"

United Mine Workers v. Coronado Co.

Holding that labor union could be sued for antitrust violations and describing the "affirmative legal recognition of their existence and usefulness and provisions for their protection"

Rule 23 - Class Actions

Holding that, to certify a class, the court must find that "questions of law or fact common to class members predominate over any questions affecting only individual members"

Rule 5 - Serving and Filing Pleadings and Other Papers

Allowing service by filing papers with the court's electronic-filing system

Section 1292 - Interlocutory decisions

Granting appellate jurisdiction over certain types of interlocutory orders

Section 216 - Penalties

Holding employers liable for “unpaid minimum wages, or their unpaid overtime compensation”

Rule 3 - Commencing an Action

Stating that once the inmate has filed his motion with the clerk, "[t]he clerk must file the motion and enter it on the criminal docket of the case in which the challenged judgment was entered"

Rule 2 - One Form of Action

Providing for "one form of action to be known as 'civil action,'" in lieu of discretely labeled actions at law and suits in equity

Rule 23.04 - Orders in Conduct of Action