Senior Circuit Judge
9th U.S. Circuit Court of Appeals
Montana - Billings
Nominated to the 9th U.S. Circuit Court of Appeals in July 1995 by Bill Clinton. Confirmed January 1996. Chief judge 2014-2021.
University of Montana School of Law, 1978
Judicial Profiles
| Title | Court | Published |
|---|---|---|
| Sidney Runyan Thomas | 9th Circuit Court of Appeals (Montana) | Jan. 4, 2010 |
Columns
| Title | Category | Published |
|---|---|---|
| No. The 9th Circuit should not be split up | Judges and Judiciary, 9th U.S. Circuit Court of Appeals | Mar. 21, 2017 |
Rulings
| Case | Category | Published |
|---|---|---|
|
Doe v. Deutsche Lufthansa Aktiengesellschaft
author
|
Civil Procedure | Oct. 30, 2025 |
|
Amended Opinion: Adams v. County of Sacramento
author
|
Constitutional Law | Jul. 9, 2025 |
|
Chang v. U.S.
dissenting
|
Torts | Jun. 9, 2025 |
|
Spencer v. Barajas
author
|
Prisoners' Rights | Jun. 6, 2025 |
|
Schuman v. Microchip Technology, Inc.
author
|
ERISA | Jun. 5, 2025 |
|
Order: Duncan v. Bonta
concurring
|
Mar. 20, 2025 | |
|
LegalForce RAPC Worldwide v. LegalForce, Inc.
author
|
Intellectual Property | Dec. 27, 2024 |
|
Rabadi v. U.S. Drug Enforcement Administration
author
|
Administrative Agencies | Nov. 29, 2024 |
|
In re: Saldana v. Bronitsky
author
|
Bankruptcy | Nov. 22, 2024 |
|
Lopez v. Garland
author
|
Immigration | Sep. 11, 2024 |
|
Adams v. County of Sacramento
author
|
Constitutional Law | Sep. 9, 2024 |
|
Ruelas v. County of Alameda
author
|
Criminal Law and Procedure | Jul. 25, 2024 |
|
Stavrianoudakis v. U.S. Fish and Wildlife Service
dissenting
|
Civil Procedure | Jul. 24, 2024 |
|
State of Washington v. U.S. Food & Drug Administration
author
|
Civil Procedure | Jul. 24, 2024 |
|
Gonzalez-Lara v. Garland
author
|
Immigration | Jun. 17, 2024 |
|
Perez v. City of Fresno
dissenting
|
Qualified Immunity | Apr. 15, 2024 |
|
DZ Reserve v. Meta Platforms, Inc.
author
|
Civil Procedure | Mar. 21, 2024 |
|
Clark v. Broomfield
author
|
Prisoners' Rights | Oct. 10, 2023 |
|
Perez v. Discover Bank
author
|
Arbitration | Jul. 24, 2023 |
|
Lee v. Fisher
dissenting
|
Securities | Jun. 1, 2023 |
|
Epic Games, Inc. v. Apple, Inc.
dissenting
|
Antitrust | Apr. 24, 2023 |
|
McKnight v. Hinojosa
author
|
Civil Procedure | Nov. 30, 2022 |
|
Online Merchants Guild v. Maduros
author
|
Tax | Nov. 9, 2022 |
|
Amended Opinion: Jones v. Ryan
author
|
Criminal Law and Procedure | Nov. 7, 2022 |
|
San Luis Obispo Coastkeeper v. Santa Maria Valley Water Conservation District
author
|
Environmental Law | Sep. 23, 2022 |
|
U.S. v. Rodriguez
dissenting
|
Immigration | Sep. 23, 2022 |
|
U.S. v. Guerrero
dissenting
|
Constitutional Law | Sep. 2, 2022 |
|
CoreCivic, Inc. v. Candide Group, LLC
author
|
Anti-SLAPP | Aug. 30, 2022 |
|
Planet Aid v. Reveal
author
|
Torts | Aug. 11, 2022 |
|
City and County of San Francisco v. Garland
author
|
Constitutional Law | Jul. 29, 2022 |
|
In re Rudolf P. Sienega
author
|
Bankruptcy | Dec. 7, 2021 |
|
Jurado v. Davis
author
|
Criminal Law and Procedure | Sep. 13, 2021 |
|
Alam v. Garland
author
|
Immigration | Sep. 9, 2021 |
|
BNSF Railway v. County of Alameda
author
|
Tax | Aug. 6, 2021 |
|
Thompson v. Hebdon
dissenting
|
Constitutional Law | Aug. 2, 2021 |
|
Noguera v. Davis
dissenting
|
Criminal Law and Procedure | Jul. 21, 2021 |
|
Jones v. Ryan
author
|
Criminal Law and Procedure | Jun. 29, 2021 |
|
National Collegiate Athletic Assn. v. Alston
affirmed
|
Antitrust | Jun. 22, 2021 |
|
Big Sandy Rancheria Enterprises v. Bonta
author
|
Native American Affairs | Jun. 17, 2021 |
|
Cheneau v. Garland
author
|
Immigration | May 14, 2021 |
|
Walden v. Shinn
author
|
Criminal Law and Procedure | Mar. 15, 2021 |
|
U.S. v. Olson
concurring
|
Criminal Law and Procedure | Feb. 23, 2021 |
|
Bello-Reyes v. Gaynor
author
|
Immigration | Jan. 15, 2021 |
|
Hall v. U.S. Dept. of Agriculture
dissenting
|
Government | Jan. 4, 2021 |
|
U.S. v. Bacon
author
|
Evidence | Nov. 6, 2020 |
|
Sierra Club v. Trump
author
|
Administrative Agencies | Oct. 13, 2020 |
|
Lam v. Acosta
author
|
Civil Rights | Sep. 28, 2020 |
|
State of California v. Trump
author
|
Constitutional Law | Jun. 29, 2020 |
|
Sierra Club v. Trump
author
|
Constitutional Law | Jun. 29, 2020 |
|
Murray v. BEJ Minerals
author
|
statutory_interpretation | Jun. 18, 2020 |
|
In re NCAA Athletic Grant-in-Aid CAP Antitrust Litigation
author
|
Antitrust | May 19, 2020 |
|
In re Facebook Inc. Internet Tracking Litigation
author
|
statutory_interpretation | Apr. 10, 2020 |
|
Padilla v. Immigration and Customs Enforcement
author
|
Immigration | Mar. 30, 2020 |
|
Board of Trustees Glazing Health v. Chambers
author
|
Civil Procedure | Nov. 8, 2019 |
|
Ramirez v. Ryan
author
|
Criminal Law and Procedure | Sep. 12, 2019 |
|
Rudel v. Hawaii Mgmt Alliance Assn.
author
|
statutory_interpretation | Sep. 12, 2019 |
|
Dawson v. NCAA
author
|
Labor Law | Aug. 13, 2019 |
|
Avena v. Chappell
author
|
Civil Rights | Aug. 9, 2019 |
|
Altera Corp. v. Commissioner of Internal Revenue
author
|
Tax | Jun. 10, 2019 |
|
Parsons v. Ryan
concurring
|
Contracts | Dec. 21, 2018 |
|
In re City of Stockton
author
|
Civil Procedure | Dec. 11, 2018 |
|
Thompson v. Hebdon
dissenting
|
Constitutional Law | Nov. 28, 2018 |
|
U.S. v. Moreno Ornelas
dissenting
|
Criminal Law and Procedure | Oct. 26, 2018 |
|
Tin Cup v. USACE
author
|
Environmental Law | Sep. 24, 2018 |
|
Turlock Irrigation District v. FERC
author
|
Environmental Law | Sep. 7, 2018 |
|
San Francisco v. Trump
author
|
Constitutional Law | Aug. 2, 2018 |
|
Hicks v. PGA Tour
author
|
Antitrust | Jul. 30, 2018 |
|
Munro v. University of Southern California
author
|
Arbitration | Jul. 25, 2018 |
|
Altera Corp. v. Commissioner of Internal Revenue
author
|
Tax | Jul. 25, 2018 |
|
U.S. v. Pepe
dissenting
|
Criminal Law and Procedure | Jul. 12, 2018 |
|
Heavenly Hana v. Hotel Union & Hotel Industry
author
|
statutory_interpretation | Jun. 4, 2018 |
|
National Wildlife Federation v. National Marine Fisheries Service
author
|
Environmental Law | Apr. 3, 2018 |
|
U.S. v. United States District Court for the District of Oregon
author
|
Civil Procedure | Mar. 8, 2018 |
|
Amended Opinion: Song v. Sessions
concurring
|
Immigration | Feb. 16, 2018 |
|
Arevalo v. Hennessy
author
|
Constitutional Law | Feb. 12, 2018 |
|
California Public Utilities Commission v. Federal Energy Regulatory Commission
author
|
Administrative Agencies | Jan. 9, 2018 |
|
Song v. Sessions
concurring
|
Immigration | Dec. 19, 2017 |
|
Arellano v. Clark County Collection Service LLC
author
|
Consumer Law | Nov. 20, 2017 |
|
Hewlett-Packard Company and Consolidated Subsidiaries v. Commissioner of Internal Revenue
concurring
|
Tax | Nov. 10, 2017 |
|
U.S. v. Smith
author
|
Criminal Law and Procedure | Aug. 11, 2017 |
|
United States v. Sierra Pacific Industries Inc.
author
|
Civil Procedure | Jul. 14, 2017 |
|
Amended Opinion: Burton v. Infinity Capital Management
author
|
Bankruptcy | Jul. 11, 2017 |
|
McKeen-Chaplin v. Provident Savings Bank
author
|
Labor Law | Jul. 6, 2017 |
| Title | Court | Published |
|---|---|---|
| Sidney Runyan Thomas | 9th Circuit Court of Appeals (Montana) | Jan. 4, 2010 |
| Title | Category | Published |
|---|---|---|
| No. The 9th Circuit should not be split up | Judges and Judiciary, 9th U.S. Circuit Court of Appeals | Mar. 21, 2017 |
| Case | Category | Published |
|---|---|---|
|
Doe v. Deutsche Lufthansa Aktiengesellschaft
author
|
Civil Procedure | Oct. 30, 2025 |
|
Amended Opinion: Adams v. County of Sacramento
author
|
Constitutional Law | Jul. 9, 2025 |
|
Chang v. U.S.
dissenting
|
Torts | Jun. 9, 2025 |
|
Spencer v. Barajas
author
|
Prisoners' Rights | Jun. 6, 2025 |
|
Schuman v. Microchip Technology, Inc.
author
|
ERISA | Jun. 5, 2025 |
|
Order: Duncan v. Bonta
concurring
|
Mar. 20, 2025 | |
|
LegalForce RAPC Worldwide v. LegalForce, Inc.
author
|
Intellectual Property | Dec. 27, 2024 |
|
Rabadi v. U.S. Drug Enforcement Administration
author
|
Administrative Agencies | Nov. 29, 2024 |
|
In re: Saldana v. Bronitsky
author
|
Bankruptcy | Nov. 22, 2024 |
|
Lopez v. Garland
author
|
Immigration | Sep. 11, 2024 |
|
Adams v. County of Sacramento
author
|
Constitutional Law | Sep. 9, 2024 |
|
Ruelas v. County of Alameda
author
|
Criminal Law and Procedure | Jul. 25, 2024 |
|
Stavrianoudakis v. U.S. Fish and Wildlife Service
dissenting
|
Civil Procedure | Jul. 24, 2024 |
|
State of Washington v. U.S. Food & Drug Administration
author
|
Civil Procedure | Jul. 24, 2024 |
|
Gonzalez-Lara v. Garland
author
|
Immigration | Jun. 17, 2024 |
|
Perez v. City of Fresno
dissenting
|
Qualified Immunity | Apr. 15, 2024 |
|
DZ Reserve v. Meta Platforms, Inc.
author
|
Civil Procedure | Mar. 21, 2024 |
|
Clark v. Broomfield
author
|
Prisoners' Rights | Oct. 10, 2023 |
|
Perez v. Discover Bank
author
|
Arbitration | Jul. 24, 2023 |
|
Lee v. Fisher
dissenting
|
Securities | Jun. 1, 2023 |
|
Epic Games, Inc. v. Apple, Inc.
dissenting
|
Antitrust | Apr. 24, 2023 |
|
McKnight v. Hinojosa
author
|
Civil Procedure | Nov. 30, 2022 |
|
Online Merchants Guild v. Maduros
author
|
Tax | Nov. 9, 2022 |
|
Amended Opinion: Jones v. Ryan
author
|
Criminal Law and Procedure | Nov. 7, 2022 |
|
San Luis Obispo Coastkeeper v. Santa Maria Valley Water Conservation District
author
|
Environmental Law | Sep. 23, 2022 |
|
U.S. v. Rodriguez
dissenting
|
Immigration | Sep. 23, 2022 |
|
U.S. v. Guerrero
dissenting
|
Constitutional Law | Sep. 2, 2022 |
|
CoreCivic, Inc. v. Candide Group, LLC
author
|
Anti-SLAPP | Aug. 30, 2022 |
|
Planet Aid v. Reveal
author
|
Torts | Aug. 11, 2022 |
|
City and County of San Francisco v. Garland
author
|
Constitutional Law | Jul. 29, 2022 |
|
In re Rudolf P. Sienega
author
|
Bankruptcy | Dec. 7, 2021 |
|
Jurado v. Davis
author
|
Criminal Law and Procedure | Sep. 13, 2021 |
|
Alam v. Garland
author
|
Immigration | Sep. 9, 2021 |
|
BNSF Railway v. County of Alameda
author
|
Tax | Aug. 6, 2021 |
|
Thompson v. Hebdon
dissenting
|
Constitutional Law | Aug. 2, 2021 |
|
Noguera v. Davis
dissenting
|
Criminal Law and Procedure | Jul. 21, 2021 |
|
Jones v. Ryan
author
|
Criminal Law and Procedure | Jun. 29, 2021 |
|
National Collegiate Athletic Assn. v. Alston
affirmed
|
Antitrust | Jun. 22, 2021 |
|
Big Sandy Rancheria Enterprises v. Bonta
author
|
Native American Affairs | Jun. 17, 2021 |
|
Cheneau v. Garland
author
|
Immigration | May 14, 2021 |
|
Walden v. Shinn
author
|
Criminal Law and Procedure | Mar. 15, 2021 |
|
U.S. v. Olson
concurring
|
Criminal Law and Procedure | Feb. 23, 2021 |
|
Bello-Reyes v. Gaynor
author
|
Immigration | Jan. 15, 2021 |
|
Hall v. U.S. Dept. of Agriculture
dissenting
|
Government | Jan. 4, 2021 |
|
U.S. v. Bacon
author
|
Evidence | Nov. 6, 2020 |
|
Sierra Club v. Trump
author
|
Administrative Agencies | Oct. 13, 2020 |
|
Lam v. Acosta
author
|
Civil Rights | Sep. 28, 2020 |
|
State of California v. Trump
author
|
Constitutional Law | Jun. 29, 2020 |
|
Sierra Club v. Trump
author
|
Constitutional Law | Jun. 29, 2020 |
|
Murray v. BEJ Minerals
author
|
statutory_interpretation | Jun. 18, 2020 |
|
In re NCAA Athletic Grant-in-Aid CAP Antitrust Litigation
author
|
Antitrust | May 19, 2020 |
|
In re Facebook Inc. Internet Tracking Litigation
author
|
statutory_interpretation | Apr. 10, 2020 |
|
Padilla v. Immigration and Customs Enforcement
author
|
Immigration | Mar. 30, 2020 |
|
Board of Trustees Glazing Health v. Chambers
author
|
Civil Procedure | Nov. 8, 2019 |
|
Ramirez v. Ryan
author
|
Criminal Law and Procedure | Sep. 12, 2019 |
|
Rudel v. Hawaii Mgmt Alliance Assn.
author
|
statutory_interpretation | Sep. 12, 2019 |
|
Dawson v. NCAA
author
|
Labor Law | Aug. 13, 2019 |
|
Avena v. Chappell
author
|
Civil Rights | Aug. 9, 2019 |
|
Altera Corp. v. Commissioner of Internal Revenue
author
|
Tax | Jun. 10, 2019 |
|
Parsons v. Ryan
concurring
|
Contracts | Dec. 21, 2018 |
|
In re City of Stockton
author
|
Civil Procedure | Dec. 11, 2018 |
|
Thompson v. Hebdon
dissenting
|
Constitutional Law | Nov. 28, 2018 |
|
U.S. v. Moreno Ornelas
dissenting
|
Criminal Law and Procedure | Oct. 26, 2018 |
|
Tin Cup v. USACE
author
|
Environmental Law | Sep. 24, 2018 |
|
Turlock Irrigation District v. FERC
author
|
Environmental Law | Sep. 7, 2018 |
|
San Francisco v. Trump
author
|
Constitutional Law | Aug. 2, 2018 |
|
Hicks v. PGA Tour
author
|
Antitrust | Jul. 30, 2018 |
|
Munro v. University of Southern California
author
|
Arbitration | Jul. 25, 2018 |
|
Altera Corp. v. Commissioner of Internal Revenue
author
|
Tax | Jul. 25, 2018 |
|
U.S. v. Pepe
dissenting
|
Criminal Law and Procedure | Jul. 12, 2018 |
|
Heavenly Hana v. Hotel Union & Hotel Industry
author
|
statutory_interpretation | Jun. 4, 2018 |
|
National Wildlife Federation v. National Marine Fisheries Service
author
|
Environmental Law | Apr. 3, 2018 |
|
U.S. v. United States District Court for the District of Oregon
author
|
Civil Procedure | Mar. 8, 2018 |
|
Amended Opinion: Song v. Sessions
concurring
|
Immigration | Feb. 16, 2018 |
|
Arevalo v. Hennessy
author
|
Constitutional Law | Feb. 12, 2018 |
|
California Public Utilities Commission v. Federal Energy Regulatory Commission
author
|
Administrative Agencies | Jan. 9, 2018 |
|
Song v. Sessions
concurring
|
Immigration | Dec. 19, 2017 |
|
Arellano v. Clark County Collection Service LLC
author
|
Consumer Law | Nov. 20, 2017 |
|
Hewlett-Packard Company and Consolidated Subsidiaries v. Commissioner of Internal Revenue
concurring
|
Tax | Nov. 10, 2017 |
|
U.S. v. Smith
author
|
Criminal Law and Procedure | Aug. 11, 2017 |
|
United States v. Sierra Pacific Industries Inc.
author
|
Civil Procedure | Jul. 14, 2017 |
|
Amended Opinion: Burton v. Infinity Capital Management
author
|
Bankruptcy | Jul. 11, 2017 |
|
McKeen-Chaplin v. Provident Savings Bank
author
|
Labor Law | Jul. 6, 2017 |