State highest court

Washington Supreme Court

The 40 most recent opinions analysed by CaseDiver, newest first. Opening a case goes straight to the full opinion reader.

Recent opinions

WashingtonEarl v. Campbell

September 3, 2026

The Washington Supreme Court held that a plaintiff may plead both a vicarious liability claim and a negligent retention claim against a city employer, even when the employer concedes the employee acted within the scope of employment, and reversed the Court of Appeals, remanding for further proceedings.

WashingtonIn re Recall of O'Neil

August 20, 2026

The Washington Supreme Court affirmed orders allowing three recall petitions to proceed on charges alleging retaliation against Port employees, and allowing an additional nondisclosure charge against one commissioner.

WashingtonState v. Sliger

August 13, 2026

The court held that the State established prima facie admissibility of Sliger’s Draeger breath-test results because expert testimony showed that the tiny tobacco strands in his teeth did not affect the test’s reliability or accuracy.

WashingtonIn re Marriage of Hauk

August 6, 2026

The Washington Supreme Court, en banc, held that when determining whether the Child Relocation Act's rebuttable presumption in favor of relocation applies, courts must calculate residential time under a phased-in parenting plan at the phase in effect when the relocating parent serves notice of intent to relocate, not…

WashingtonState v. Blake

February 25, 2021197 Wash. 2d 170

The Washington Supreme Court held that the state's strict-liability felony drug-possession statute violates the state and federal Due Process Clauses because it criminalizes wholly innocent, passive possession without proof of mens rea while imposing severe felony consequences.

The Washington Supreme Court held that a trial court's compliance with the Blazina requirement of an individualized, on-the-record inquiry into a defendant's current and future ability to pay discretionary legal financial obligations (LFOs) is reviewed de novo, and that the trial court here failed to conduct an…

WashingtonState v. Houston-Sconiers

March 2, 2017188 Wash. 2d 1

The court held that juvenile defendants sentenced in adult court must receive an individualized sentencing process that accounts for youth and gives the sentencing judge complete discretion to depart below otherwise applicable sentencing ranges and firearm enhancements.

WashingtonThe State of Washington v. Andrea Marie Rich

January 7, 2016184 Wash. 2d 897

The Washington Supreme Court held that proof of DUI alone, or speeding alone, does not establish reckless endangerment, because each offense lacks the recklessness mens rea of knowing disregard of a substantial risk combined with gross deviation from reasonable conduct.

The Washington Supreme Court dismissed Robert Yates's first personal restraint petition challenging his Pierce County aggravated first degree murder convictions and death sentence, rejecting all 25 grounds for relief, including jury-selection and juror-pay claims, a death-qualification challenge, public trial claims…

The Washington Supreme Court, reviewing a personal restraint petition granted on limited issues, held that the prosecutor's closing-argument PowerPoint — which superimposed 'GUILTY' three times over Glasmann's battered booking photograph and challenged his veracity with captions like 'DO YOU BELIEVE HIM?' —…

WashingtonIn the Matter of the Personal Restraint of Jeffrey A. Coats

November 17, 2011173 Wash. 2d 123

The Washington Supreme Court denied Jeffrey Coats's untimely personal restraint petition challenging his 1995 guilty-plea convictions. The court held that his judgment and sentence, though it erroneously stated a life maximum for conspiracy to commit first degree robbery (actual maximum 10 years), was valid on its…

WashingtonState v. Monday

June 9, 2011257 P.3d 551

The court held that the prosecutor committed misconduct by repeatedly asserting that African American witnesses followed a racialized code of silence and by using personal opinions to attack witness and defendant credibility.

WashingtonThe State of Washington v. Kevin L. Monday, Jr.

June 9, 2011171 Wash. 2d 667

The court held that the prosecutor deprived Monday of a fair trial by repeatedly invoking a purported racialized code of silence to discredit African American witnesses and by making other improper credibility arguments.

WashingtonState v. Grier

February 10, 2011246 P.3d 1260

The Washington Supreme Court held that Grier's agreement to withdraw lesser included offense instructions did not waive her ability to claim ineffective assistance of counsel because the decision requires consultation but ultimately falls within defense counsel's tactical authority.

WashingtonThe State of Washington v. Kristina Ranae Grier

February 10, 2011171 Wash. 2d 17

The Washington Supreme Court reversed the Court of Appeals, which had overturned Kristina Grier's second degree murder conviction on the ground that counsel was ineffective for withdrawing requested lesser included manslaughter instructions in favor of an 'all or nothing' acquittal strategy.

WashingtonState v. Valencia

September 9, 2010239 P.3d 1059

The Washington Supreme Court held that a preenforcement vagueness challenge to a community custody condition barring possession of 'any paraphernalia' usable for controlled substances is ripe for review on direct appeal, that sentencing conditions carry no presumption of constitutionality and are reviewed for abuse of…

WashingtonThe State of Washington v. Isidro Sanchez Valencia

September 9, 2010169 Wash. 2d 782

The Washington Supreme Court held that a preenforcement vagueness challenge to a community custody condition barring possession of 'any paraphernalia' usable for controlled substances was ripe for direct appellate review, disapproving State v. Motter to the extent of conflict.

WashingtonState v. Jones

April 15, 2010230 P.3d 576

The court held that the trial court violated Jones's Sixth Amendment right to present a defense by preventing him from testifying and cross-examining the alleged victim about his account that the sexual encounter occurred consensually during a sex party.

WashingtonThe State of Washington v. Christopher Lawrence Jones

April 15, 2010168 Wash. 2d 713

The court held that the trial court violated Jones's Sixth Amendment right to present a defense by preventing him from testifying and cross-examining the victim about his account of consensual sexual conduct on the night of the alleged rape.

WashingtonThe State of Washington v. Ryan J. O'Hara

October 1, 2009167 Wash. 2d 91

The Washington Supreme Court reversed the Court of Appeals and reinstated the preservation rule: Ryan O'Hara's unpreserved complaint that his self-defense instruction defined 'malice' using only the first sentence of RCW 9A.04.110(12) is neither an error of constitutional magnitude nor manifest error, so it could not…

WashingtonState v. Kyllo

September 3, 2009215 P.3d 177

The Washington Supreme Court held that Kenneth Kyllo's trial counsel rendered ineffective assistance by proposing an 'act on appearances' self-defense instruction conditioning the defense on a reasonable belief of 'actual danger of great bodily harm,' when RCW 9A.16.020(3) requires only a reasonable belief of…

WashingtonState v. Engel

July 9, 2009210 P.3d 1007

The Washington Supreme Court held that the evidence was insufficient to sustain Roger Engel's conviction for burglary in the second degree because Western Asphalt's seven-to-eight-acre business yard — only one-third fenced, with the remainder bordered by unfenced sloping terrain — was not a "fenced area" under RCW…

WashingtonThe State of Washington v. Roger Dean Engel

July 9, 2009166 Wash. 2d 572

The court held that a “fenced area” under Washington’s burglary statute must be the curtilage of a qualifying building or structure and must be completely enclosed by fencing alone or by fencing combined with other structures.

WashingtonState v. Garvin

May 28, 2009207 P.3d 1266

The Washington Supreme Court held that a police officer exceeded the permissible scope of a Terry frisk when he continued squeezing a suspect's coin pocket after ascertaining it contained no weapon, discovering a small baggie of methamphetamine only through that manipulation.

WashingtonThe State of Washington v. Anthony Gaylord Garvin

May 28, 2009166 Wash. 2d 242

The Washington Supreme Court held that a Union Gap police officer exceeded the permissible scope of a Terry frisk when he continued squeezing the contents of Garvin's coin pocket after ascertaining no weapon was present, discovering a small baggy of methamphetamine through manipulation.

WashingtonState v. Sutherby

April 9, 2009204 P.3d 916

The Washington Supreme Court held that the proper unit of prosecution for possession of child pornography under former RCW 9.68A.070 is one count per possession, not per image or per minor depicted, resolving the statute's ambiguity under the rule of lenity and ordering resentencing on a single count.

WashingtonPanag v. Farmers Ins. Co. of Washington

April 2, 2009166 Wash. 2d 27

The court held that the Consumer Protection Act applies to allegedly deceptive efforts to collect an unadjudicated insurance subrogation claim, even when the plaintiff has no consumer or business relationship with the defendant and the parties' underlying relationship is adversarial.

WashingtonState v. Fisher

March 12, 2009202 P.3d 937

The court reversed Fisher's convictions for four counts of child molestation and remanded for a new trial because the prosecutor introduced physical-abuse evidence before the defense made delayed reporting an issue and then used that evidence to argue propensity.

WashingtonThe State of Washington v. Timothy Scott Fisher

March 12, 2009165 Wash. 2d 727

The court held that Fisher was denied a fair trial because the prosecutor introduced physical-abuse evidence before the defense made delayed reporting an issue and then used that evidence to argue that Fisher had a propensity to commit sexual abuse.

WashingtonState v. Warren

November 20, 2008195 P.3d 940

The Washington Supreme Court, sitting en banc, affirmed Richard Warren's convictions for first degree child molestation of his eight-year-old stepdaughter and three counts of second degree child rape of his fourteen-year-old stepdaughter, holding that although the prosecutor made several improper closing…

WashingtonThe State of Washington v. Richard Headen Warren

November 20, 2008165 Wash. 2d 17

The Washington Supreme Court affirmed Richard Warren's convictions for first degree child molestation of his eight-year-old stepdaughter and three counts of second degree child rape of his fourteen-year-old stepdaughter, along with a lifetime no-contact sentencing condition barring contact with his wife.

WashingtonState v. Bahl

October 9, 2008193 P.3d 678

The Washington Supreme Court held that vagueness challenges to community custody conditions may be raised for the first time on appeal and that sufficiently ripe preenforcement challenges to sentencing conditions are reviewable.

WashingtonThe State of Washington v. Eric G. Bahl

October 9, 2008164 Wash. 2d 739

The court held that Bahl could raise preenforcement vagueness challenges to his community-custody conditions because the claims were ripe and sentencing illegality may be raised for the first time on appeal.