John Lopez IV

Current office: Vice Chief Justice, Arizona Supreme Court

Office per official source. 5 official record items loaded (selection, not exhaustive). Checked 2026-09-24.

Opinion (majority): Doe v. The Corporation of the President of the Church of Jesus Christ of Latter-Day Saints

The First Amendment generally prohibits factfinders from inquiring into a clergy member's application of religious doctrine in determining whether mandatory reporting of child abuse was 'reasonable and necessary' under Arizona's Reporting Statute. Docket CV-25-0213-PR, decided 2026-07-30. Authored majority opinion. Source: official court opinion page.

Opinion (majority): 9W Halo OPCO, LP v. Arizona Department of Revenue

The 'processing operations' use-tax exemption in A.R.S. § 42-5159(B)(1) applies to machinery used to change the marketability of a product; downstream transactions are irrelevant to the exemption inquiry. Docket CV-24-0288-PR, decided 2026-03-03. Authored majority opinion. Source: official court opinion page.

Opinion (majority): Smith v. Fontes

A.R.S. § 19-121.04(A)'s requirement to double-count certain invalid signatures is unconstitutional as applied because it effectively raised the 15% constitutional signature threshold for statewide initiatives. Docket CV-24-0222-AP, decided 2025-08-06. Authored majority opinion. Source: official court opinion page.

Opinion (majority): State v. Melendez

The State does not violate due process by using a defendant's post-Miranda statements and temporary deferrals for impeachment if the defendant fails to unambiguously invoke Miranda rights and ultimately speaks on the substantive matters. Docket CR-23-0215-PR, decided 2025-03-28. Authored majority opinion. Source: official court opinion page.

Opinion (majority): Planned Parenthood Arizona, Inc. v. Mayes

A.R.S. § 36-2322 does not repeal or restrict A.R.S. § 13-3603, which remains enforceable absent a federal constitutional right to abortion; remanded for further constitutional challenges. Docket CV-23-0005-PR, decided 2024-04-09. Authored majority opinion. Source: official court opinion page.

On the ballot (retention): Justice of the Arizona Supreme Court (retention election) — November 3, 2026 general election

Listed as "John R. Lopez IV" (Nonpartisan) on the Arizona Commission on Judicial Performance Review certified candidate list for the 2026 General Election (as of 2026). Checked 2026-09-24.

On the Nov 3, 2026 general ballot — retention, Justice of the Supreme Court (AZ)

Ballot designation: Nonpartisan (retention)

Justice of the Supreme Court · AZ-SUPCT-RETENTION

Nonpartisan · Incumbent · On the 2026 ballot