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The Erie Doctrine

The Erie Doctrine

Learn about the general rule that a federal court sitting in diversity must apply state substantive law and federal procedural law.


In this lesson, we'll learn about the rule that dictates the application of state substantive law and federal procedural law for federal courts sitting in diversity.

A federal court must have subject-matter jurisdiction to hear any case. The two primary bases for federal subject-matter jurisdiction are federal-question and diversity jurisdiction. Federal-question jurisdiction means that federal law creates the claim, or the plaintiff relies on federal law to establish a right to relief. [See...