A legally protected interest or claim that exists independently of court procedures and cannot be abridged, enlarged, or modified by rules of practice or procedure. Under the Rules Enabling Act, federal procedural rules remain valid only when they leave such interests intact.
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How its tested
Common Examples
6
Class Certification Dispute
Stonehaven Properties sued several defendants in federal court under diversity jurisdiction seeking to recover interest on late payments. A New York statute would have barred class treatment for those claims. The court applied Federal Rule of Civil Procedure 23 to certify the class because the rule governed procedure without altering any substantive right to recover the interest.
Miranda Warning Challenge
Sylvia Santos was arrested and questioned without receiving warnings. She later sought to suppress her statements. The court recognized her Fifth Amendment privilege as a substantive right that the state could not override through procedural shortcuts in obtaining confessions.
In March 1963 Ernesto Miranda was arrested at his home in Phoenix and taken to the police station where he was identified by the complaining witness. He was then questioned by two officers in Interrogation Room No. 2 for two hours. The officers did not advise him of any right to counsel. Miranda signed a typed confession that was introduced at his trial for kidnapping and rape.
On October 14 1960 Michael Vignera was arrested in connection with a Brooklyn robbery. He was taken first to the 17th Detective Squad headquarters in Manhattan and later to the 66th Detective Squad. A detective questioned him for several hours without any advice concerning counsel. Vignera made an oral admission. He was then questioned by an assistant district attorney whose transcribed statement was also introduced at his trial for first-degree robbery.
On March 20 1963 Carl Calvin Westover was arrested by Kansas City police as a suspect in two local robberies. Kansas City police interrogated Westover on the night of his arrest. The next day local officers interrogated him again throughout the morning. Westover was then turned over to FBI agents who questioned him for two to two-and-a-half hours about California robberies and obtained signed confessions. At the time the FBI agents began questioning Westover he had been in custody for over fourteen hours.
On January 31 1963 Roy Allen Stewart was arrested at his home in connection with a series of purse-snatch robberies. During the next five days police interrogated Stewart on nine different occasions without any advice of rights. On the ninth session Stewart confessed. Transcripts of the interrogations were introduced at his trial for kidnapping rape and murder.
The Arizona Supreme Court affirmed Miranda's conviction. The New York courts affirmed Vignera's conviction. The Ninth Circuit affirmed Westover's conviction. The California Supreme Court reversed Stewart's conviction. The Supreme Court granted certiorari in the four cases and consolidated them for argument.
Sophia Singh lived with her grandchildren in a single-family home. City zoning rules limited occupancy to nuclear families. The court held that the zoning ordinance violated a substantive right to family association protected by the Due Process Clause.
Moore v. City of East Cleveland, Ohio431 U.S. 494, 503 (1977)
In early 1973, Mrs. Inez Moore received a notice of violation from the city of East Cleveland. The notice stated that her grandson John Moore, Jr., was an illegal occupant of her home. It directed her to comply with the housing ordinance.
Mrs. Moore lived in her East Cleveland home together with her son Dale Moore, Sr., and her two grandsons Dale Moore, Jr., and John Moore, Jr. John came to live with her after his mother's death when he was less than one year old. When she failed to remove John from the home, the city filed a criminal charge against her.
Mrs. Moore moved to dismiss the charge. She claimed that the ordinance was constitutionally invalid on its face. Her motion was overruled. Upon conviction she was sentenced to five days in jail and a $25 fine.
The East Cleveland ordinance limited occupancy of a dwelling unit to members of a single family. The ordinance defined family to include only a husband or wife of the nominal head of the household, unmarried children of the head or spouse provided they have no children residing with them, a parent of the head or spouse, or not more than one dependent child of the head or spouse along with that child's spouse and dependent children.
The Ohio Court of Appeals affirmed the conviction after giving full consideration to her constitutional claims. The Ohio Supreme Court denied review of the case. The United States Supreme Court noted probable jurisdiction of her appeal.
Sabrina Shah and her spouse sought state recognition of their out-of-state marriage. State officials refused on statutory grounds. The court treated the right to marry as a substantive liberty interest that states could not redefine through ordinary legislation.
Obergefell v. Hodges576 U.S. 644 (2015)
The petitioners were fourteen same-sex couples and two men whose same-sex partners were deceased. They lived in Michigan, Kentucky, Ohio, and Tennessee. Those states defined marriage as a union between one man and one woman under their constitutions and statutes.
The petitioners filed suits in federal district courts in their home states. They sought marriage licenses or recognition of marriages lawfully performed elsewhere. James Obergefell and John Arthur traveled from Ohio to Maryland to marry aboard a medical transport plane because Arthur suffered from ALS; Obergefell later sought to be listed as surviving spouse on Arthur's death certificate. April DeBoer and Jayne Rowse, Michigan nurses, adopted three children but could not both serve as legal parents under state adoption rules. Army Reserve Sergeant Ijpe DeKoe and Thomas Kostura married in New York before DeKoe's deployment to Afghanistan and later settled in Tennessee.
Each district court ruled in the petitioners' favor. The respondents appealed. The Sixth Circuit consolidated the cases and reversed the district court judgments. The petitioners sought certiorari, which the Supreme Court granted.
Same-sex couples had begun establishing families after substantial cultural and political developments in the late twentieth century. Earlier litigation had addressed the legal status of gays and lesbians, including challenges that reached the Supreme Court in Bowers v. Hardwick and Lawrence v. Texas.
Simon Stern sued an estate representative in federal court. State law required personal delivery of process while the federal rule permitted leaving papers at the residence. The court applied the federal rule because it regulated only the manner of giving notice and did not modify any substantive right to defend the action.
Hanna v. Plumer380 U.S. 460 (1965)
On February 6, 1963, petitioner, a citizen of Ohio, filed her complaint in the District Court for the District of Massachusetts, claiming damages in excess of $10,000 for personal injuries resulting from an automobile accident in South Carolina, allegedly caused by the negligence of one Louise Plumer Osgood, a Massachusetts citizen deceased at the time of the filing of the complaint. Respondent, Mrs. Osgood's executor and also a Massachusetts citizen, was named as defendant.
On February 8, service was made by leaving copies of the summons and the complaint with respondent's wife at his residence, concededly in compliance with Rule 4 (d) (1). Respondent filed his answer on February 26, alleging, inter alia, that the action could not be maintained because it had been brought contrary to and in violation of the provisions of Massachusetts General Laws Chapter 197, Section 9.
On October 17, 1963, the District Court granted respondent's motion for summary judgment. On appeal, the Court of Appeals for the First Circuit affirmed. The Supreme Court granted certiorari because of the threat to the goal of uniformity of federal procedure posed by the decision below.
Sierra Santos and other physicians challenged a state ban on prescribing medication to hasten death. The court examined whether a substantive right to assistance in ending life existed under the Due Process Clause before deciding whether the statute could stand.
Washington v. Glucksberg521 U.S. 702 (1997)
Washington has prohibited assisting suicide since its territorial days. In 1854, the first Territorial Legislature outlawed assisting another in the commission of self-murder. The current statute, Wash. Rev. Code § 9A.36.060, provides that a person is guilty of promoting a suicide attempt when he knowingly causes or aids another person to attempt suicide, and classifies it as a class C felony punishable by up to five years imprisonment and a $10,000 fine. Washington's Natural Death Act, enacted in 1979, states that the withholding or withdrawal of life-sustaining treatment at a patient's direction shall not constitute a suicide, but the state has consistently rejected efforts to legalize physician-assisted suicide, including a 1991 ballot initiative defeated by voters.
The respondents in this case are four physicians who practice in Washington and treat terminally ill patients, three terminally ill patients who sought to end their lives with physician assistance and have since died, and Compassion in Dying, a nonprofit organization that counsels people considering physician-assisted suicide. The physicians declared that they would assist their patients in ending their lives if not for the assisted-suicide ban. Petitioners are the State of Washington and its Attorney General.
In January 1994, the respondents filed this action in the United States District Court for the Western District of Washington. They sought a declaration that Wash. Rev. Code § 9A.36.060 is unconstitutional on its face and an injunction against its enforcement. The District Court held that the statute was unconstitutional. A panel of the Court of Appeals for the Ninth Circuit reversed that decision, but the full court sitting en banc reversed the panel and affirmed the District Court. The Supreme Court granted certiorari to review the case.
How does the Rules Enabling Act distinguish substantive rights from procedural rules?
The Act prohibits any federal rule that abridges, enlarges, or modifies a substantive right. Courts therefore ask whether the rule governs only the judicial process for enforcing rights or instead changes the rights themselves.
Supporting sources
Does Rule 23 create or modify substantive rights when it authorizes class actions?
No. Rule 23 is valid because it addresses only the procedure for aggregating claims already recognized under substantive law. It does not enlarge the underlying right to recover damages or interest.
Supporting sources
Can a federal procedural rule displace a state statute that limits class actions?
Yes, when the state statute functions as a procedural barrier rather than a substantive limit on the right to recover. The federal rule controls if it leaves the underlying substantive right unchanged.
Supporting sources
What happens when a federal rule and a state rule conflict over service of process?
The federal rule applies if it regulates only the manner of notification and does not alter any substantive right to defend or to be heard. Courts therefore apply the federal rule even when state law requires different delivery methods.
Supporting sources
384 U.S. 436 (1966)
…a "noble principle often transcends its origins," the privilege has come rightfully to be recognized in part as an individual's substantive right, a "right to a private enclave where he may lead a private life. That right is the hallmark of our democracy." United States v. Grunewald , 233 F. 2d 556, 579, 581-582 (Frank, J.,…