Ake v. Oklahoma
The Supreme Court of the United States held that the Due Process Clause of the Fourteenth Amendment required the state to provide a psychiatric evaluation to be used on behalf of an indigent criminal defendant if he needed it.
470 U.S. 68 · No. 83-5424 · 1984 term · Burger Court
Decided Feb 20, 1985 · argued Nov 7, 1984
Civil rights · Indigents: assistance of psychiatrist
Majority opinion: Thurgood Marshall
The voteMajorityDissent
8–18 in the majority, 1 in dissent
1 dissent (8–1)
Reversed and remanded. Ake won.
What this ruling means
Reversed and remanded: the Supreme Court overturned the decision of the Oklahoma Supreme Court and sent the case back to that court for further proceedings that follow the Supreme Court’s ruling.
Ake was the petitioner, the side that asked the Supreme Court to review the case. “Won” means the Court gave that side the result it asked for.
From the Supreme Court Database. A justice who agreed with the result but not the reasoning counts in the majority.
Summary
The opening of the case’s Wikipedia article: what the case was about and what the Court held.
Ake v. Oklahoma, 470 U.S. 68 (1985), was a case in which the Supreme Court of the United States held that the Due Process Clause of the Fourteenth Amendment required the state to provide a psychiatric evaluation to be used on behalf of an indigent criminal defendant if he needed it.
Data notes
The text is Wikipedia’s (CC BY-SA 4.0), matched to the case by its citation, docket number or name and year, and is not checked against the opinion. The site keeps the article’s opening section, ending on its last full sentence. The one-sentence summary under the title is the Decisions list’s: Wikipedia’s own ruling sentence, or, tagged “AI-written”, one Claude wrote from this opening.
How the justices voted
Each justice who took part, placed by their Martin–Quinn ideology score for the 1984 term. Filled: the 8 in the majority. Hollow: the 1 in dissent. Colour is the party of the president who appointed them.
Majority(8)
Thurgood MarshallWrote the majority opinion
Warren BurgerWrote a concurrence
William BrennanJoined the majority
John StevensJoined the majority
Harry BlackmunJoined the majority
Lewis PowellJoined the majority
Byron WhiteJoined the majority
Sandra O'ConnorJoined the majority
Dissent(1)
William RehnquistWrote a dissent
Data notes
Each justice’s vote and what they wrote are from the justice-centered file of the Supreme Court Database. “Wrote a concurrence” means the justice sided with the majority and wrote separately; a justice who dissented in part is counted on the side they took overall. A justice who wrote nothing is listed as joining their side.
Positions are each justice’s Martin–Quinn score for the case’s term, the same scores as the Ideology page: negative is more liberal, positive more conservative. A score sums up a justice’s votes across the whole term, so it says where they usually sit, not why they voted as they did here. The median line is the Court’s median justice that term.
The parties
Who brought the case to the Court, who answered it, and how it got there.
- Petitioner
- AkePerson allegedly criminally insane or mentally incompetent to stand trial
- Respondent
- OklahomaState (Oklahoma)
- Reached the Court by
- Certiorari (the Court chose to hear it)
Data notes
The names are the two sides of the case’s title. The description under each is the Supreme Court Database’s category for that party, in its own wording. The petitioner is the side that asked the Supreme Court to review the decision below. “Why it was taken” appears only when the majority opinion says lower courts disagreed or were unsure about the question; reasons that would fit any case (“to resolve the question presented”, “an important question”) are left out.
The law at issue
The law the Court was asked to apply, and the kind of power it used to decide.
- Provision
- Fourteenth Amendment (due process)
- Kind of law
- Constitutional Amendment
- Decided by
- Judicial review (state level)
Data notes
The Supreme Court Database codes the main constitutional provision, statute or court rule each case turned on, and the basis of the decision: judicial review of a federal or state law, interpreting a statute, supervising the lower courts, and so on. A case can rest on more than one. “Overruled” counts only where the majority opinion says so.
Timeline
What happened at the Court and how the case got there, newest first.
- Feb 20, 1985DecidedDecided · Decided 8–1: reversed and remanded. Ake won.
- Nov 7, 1984ArguedArgued · Oral argument before the Court.
- Not datedTaken upTaken up · The Supreme Court agreed to hear the case (certiorari).
- Not datedCourt belowCourt below · Decided by the Oklahoma Supreme Court: affirmed.
- Not datedBeganBegan · The case began in the Oklahoma trial court.
Data notes
From the Supreme Court Database: the court the case began in, the court whose decision the Supreme Court reviewed and what that court did, how the case came to the Court, and the dates of argument and decision. The database does not date the steps in the lower courts. Court names are the database’s.
Official record
Read the full opinion on Justia, the argument audio on Oyez and Wikipedia. Case data from the Supreme Court Database, Version 2026 Release 01, through the 2025 term.