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In the Matter of O

3 Cited authorities

  1. Erie R. Co. v. Tompkins

    304 U.S. 64 (1938)   Cited 20,773 times   18 Legal Analyses
    Holding that state law governs substantive issues and federal law governs procedural issues

  2. West v. AT&T Co.

    311 U.S. 223 (1940)   Cited 1,628 times
    Holding that federal courts must defer to an intermediate state court's interpretation of state law, made in the very case under consideration, when the state supreme court has denied review

  3. Fidelity Trust Co. v. Field

    311 U.S. 169 (1940)   Cited 381 times
    Holding that the federal courts must follow the ruling of an intermediate state court only when the highest court of the state has not addressed the legal issue