Erie Doctrine — LLMpedia

Erie Doctrine
Original: Optimager Vector: Ipankonin · Public domain · source
Name	Erie Doctrine
Court	United States Supreme Court
Decision date	1938
Citation	Erie Railroad Co. v. Tompkins, 304 U.S. 64 (1938)
Jurisdiction	United States
Keywords	conflict of laws; choice of law; federal courts; diversity jurisdiction

Contents

Erie Doctrine The Erie Doctrine is a foundational principle in United States civil procedure governing the application of state substantive law by federal courts sitting in diversity jurisdiction and its limits on the use of federal general common law. It reshaped relationships among the Supreme Court of the United States, the United States Constitution, state judiciaries such as the New York Court of Appeals, and federal trial courts including the United States District Court for the Southern District of New York. The doctrine has influenced decisions in cases from Guaranty Trust Co. v. York to Hanna v. Plumer and has animated scholarship at institutions like Harvard Law School and Yale Law School.

Background and historical development

Before the decision that announced the doctrine, federal courts often applied a federal general common law developed in precedents such as decisions by the United States Circuit Court of Appeals and the Supreme Court of the United States. The pre-Erie era included doctrines articulated in cases like Swift v. Tyson and practices influenced by jurists associated with the Legal Realism movement and scholars from institutions such as Columbia Law School. The transition involved prominent figures including justices from the Supreme Court of the United States and commentators writing in journals published by Harvard Law Review and Yale Law Journal. Debates involved state courts such as the New York Court of Appeals and federal courts including the United States Court of Appeals for the Second Circuit.

The landmark case decided by the Supreme Court of the United States in 1938 involved the Erie Railroad Company and plaintiff Harry Tompkins and overruled Swift v. Tyson. The opinion, delivered by Justice Louis Brandeis, held that federal courts exercising diversity jurisdiction must apply state substantive law as declared by the state's highest court, drawing on principles in the United States Constitution and prior precedents such as Black and White Taxicab and Transfer Co. v. Brown and Yellow Taxi Co.. The decision directly affected litigants in federal trial courts including the United States District Court for the Southern District of New York and appellate review by the United States Court of Appeals for the Second Circuit.

The doctrine requires federal courts to apply substantive law of the forum state, which includes decisions by the state's highest court such as the California Supreme Court or the Massachusetts Supreme Judicial Court, and applicable state statutes enacted by legislatures like the New York State Legislature or the California State Legislature. Erie distinguishes between substantive and procedural rules, interacting with Federal Rules promulgated under the Rules Enabling Act and interpreted by the Supreme Court of the United States in cases like Hanna v. Plumer and Guaranty Trust Co. v. York. The framework incorporates choice-of-law principles articulated in decisions by appellate courts such as the United States Court of Appeals for the First Circuit and scholarly tests advanced at venues like Columbia Law Review.

In practice, federal judges on district courts including the United States District Court for the Southern District of New York and the United States District Court for the District of Massachusetts must determine whether an issue is substantive under precedents like Guaranty Trust Co. v. York, or procedural under Hanna v. Plumer. The doctrine affects litigation strategy for parties represented by firms appearing before courts such as the Second Circuit and litigants invoking statutes like the Federal Rules of Civil Procedure in forums including the United States District Court for the Eastern District of Pennsylvania. Choice-of-law questions also engage state conflicts rules as articulated by courts such as the New Jersey Supreme Court and the Pennsylvania Supreme Court.

Several limiting doctrines have developed, including the outcome-determinative test from Guaranty Trust Co. v. York, the twin aims test discussed in decisions of the Supreme Court of the United States, and the approach under Hanna v. Plumer where Federal Rules apply unless they exceed the Rules Enabling Act or abridge substantive rights. Other exceptions arise under Erie-related doctrines developed in appellate courts such as the United States Court of Appeals for the Third Circuit and specialized contexts involving federal statutes enacted by the United States Congress or issues within the exclusive province of federal institutions like the United States Patent and Trademark Office.

The doctrine altered forum selection strategies for litigants appearing before courts such as the United States District Court for the Southern District of New York, the Second Circuit, and state high courts including the New York Court of Appeals. It affected enforcement of state tort rules like those developed by the Iowa Supreme Court and contract doctrines refined by the Connecticut Supreme Court, influencing litigation after regulatory changes by agencies such as the Federal Trade Commission or statutory reforms by legislatures like the Texas Legislature. Law firms and academics at centers including Stanford Law School and University of Chicago Law School adjusted advocacy and scholarship to account for Erie’s constraints on federal common law.

Scholars and practitioners at institutions including Columbia Law School, Harvard Law School, and Yale Law School have debated Erie’s doctrinal boundaries, with critics arguing that decisions like Hanna v. Plumer blurred substantive/procedural lines and supporters defending Erie as corrective to Swift v. Tyson. Empirical studies published in journals such as the Harvard Law Review and the Yale Law Journal examine forum shopping in response to Erie, prompting proposals for reform debated in panels at organizations like the American Bar Association and conferences at law schools including Georgetown University Law Center.

Category:United States civil procedure