Amicus Briefs
CTLA’s active Amicus Curiae Committee, chaired by Ned Deakins and Paige Singleton reviews requests for amicus assistance and decides which to accept. It sometimes provides research and briefs to help with this function.
Review the Amicus Guidelines used to determine involvement and complete the Amicus Request Form.
CTLA can never thank the brief writers enough for their efforts on behalf of the association, its members and their clients. Their assistance is invaluable. Here are the briefs (alphabetically within years), with the names of the authors who wrote them on CTLA’s behalf. Additional pleadings are sometimes available. Contact Kelsey Hawkins at to inquire.
2026
Brown v. Ollie’s Breckenridge, LLC
Colorado Court of Appeals
Spencer Aitken and Taylor Dickmann
Hernandez Moreno v. SH Building Group, LLC, et al.
Colorado Court of Appeals
Nelson Boyle and Paige Singleton
Johnson v. Housing Authority of the City and County of Denver
Colorado Court of Appeals
Jordan Cotleur, Nathaniel Deakins, Jana Happel, and Mackenzie Russell
Colorado Court of Appeals
Melanie Sulkin
Salguero-Quijada v. NorGUARD Insurance Co.
Colorado Court of Appeals
Nelson Boyle and Paige Singleton
Colorado Court of Appeals
Spencer Aitken and Nelson Boyle
2025
Babayev v. The Hertz Corporation
Colorado Supreme Court
Robyn Levin and James Hart (CTLA) and Jeffery White (AAJ)
Colorado Supreme Court
Megan Matthews and Melanie Sulkin
Colorado Supreme Court
Megan Matthews and Karman Reed
Keaton v. Terra Management Group, et al.
Colorado Supreme Court
Gideon Irving, Robyn Levin, Alex Wilschke and Nathaniel Deakins
Macomber, et al. v. Nations Roof, LLC et al.
Colorado Supreme Court
Damon Davis
In re: The People of the State of Colorado v. Cooper
Colorado Supreme Court
Geoffrey Klingsporn and Andrew Fischer
Riggs Oil & Gas Corp., et al. v. Jonah Energy LLC
Colorado Supreme Court
Rudy Verner, Geoffrey Klingsporn and Andrew Fischer
The Estate of Carol Ross v. Public Service Company of Colorado
Colorado Supreme Court
Karman Reed and Nathaniel Deakins
USAA General Indemnity Co. v. Moore, et al.
Colorado Court of Appeals
Timothy Garvey
Colorado Court of Appeals
Nelson Waneka
2024
Appleby, et al. v. Dossey Sudik Structural Engineers, LLC
Colorado Supreme Court
Jeffrey Kerrane, Kristina Dixon and Allyson Maroon
Board of County Commissioners of Boulder County v. Suncor Energy (USA), Inc.
Colorado Supreme Court
Nelson Boyle
Covelli v. Toyota Motor Corp., et al.
Colorado Court of Appeals
Timothy Garvey
Outdoor Design Landscaping LLC, et al. v. Public Service Co. of Colorado
Colorado Supreme Court
Nathaniel Deakins, Julia Thompson and Dean Batchelder
Fear v. GEICO Casualty Company
Colorado Supreme Court
Michael Rosenberg and Nelson Waneka
In re: Jordan, et al. v. Terumo BCT Sterilization Services, et al.
Colorado Supreme Court
Anna Martinez
Kritzer v. Qwest Corp., et al.
Colorado Court of Appeals
D. Dean Batchelder
Nicola v. City of Grand Junction
Colorado Supreme Court
Megan Matthews, Karman Reed and Spencer Aitken
2023
Antero Treatment LLC v. Veolia Water Technologies, Inc., et al.
Colorado Supreme Court
Nelson Boyle
Aurora Public Schools v. Saupe
Colorado Supreme Court
Nelson Boyle, S. Paige Singleton, and Alyssa Hill
County of Jefferson v. Stickle
Colorado Supreme Court
Dean Batchelder and Alyssa Hill
Elliott v. DoorDash, Inc., et al.
Colorado Supreme Court
Nelson Boyle
Colorado Court of Appeals
Robert T. Fishman, Stephen J. Burg, David J. Crough and Jessica L. Breuer
Colorado Court of Appeals
Timothy Garvey and Robert Peck
Colorado Supreme Court
S. Paige Singleton
Klabon v. Travelers Property Casualty Company of America
Colorado Supreme Court
Michael Rosenberg
Miller v. Crested Butte, LLC d/b/a Crested Butte Mountain Resort
Colorado Supreme Court
S. Paige Singleton
Colorado Supreme Court
Julia Thompson, Timothy Luetkemeyer, and Robyn Levin
Weatherill v. State Farm Mutual Automobile Insurance Company
Colorado Court of Appeals
James Anderson and Robert Caldwell
Colorado Court of Appeals
Nelson Boyle and Mari Newman
2022
BKP, Inc. v. Killmer, Lane & Newman, LLP
Colorado Supreme Court
Anna N. Martinez and Esteban A. Martinez
Dream Finders Homes v. Weyerhaeuser
Colorado Supreme Court
Joanna R. Merill and Jason Wesoky
Fear v. GEICO Casualty Company
Colorado Court of Appeals
Michael J. Rosenberg and Timothy M. Garvey
Gebert v. Sears Roebuck and Co.
Colorado Court of Appeals
Timothy M. Garvey and Robert S. Peck
Henck v. Sombrero Stables, LLC
Colorado Court of Appeals
Nelson A. Waneka
Colorado Court of Appeals
Jessica L. Schlatter and S. Paige Singleton
Roudybush v. Catholic Health Initiatives Colorado
Colorado Court of Appeals
Kylie M. Schmidt
State of Colorado v. Juul Labs, Inc.
Colorado Supreme Court
Megan K. Matthews and Olga Y. Steinreich
United States Court of Appeals for the Tenth Circuit
Michael J. Rosenberg
2021
Colorado Court of Appeals
Nelson A. Waneka
Gregory v. Safeco Insurance Company of America
Colorado Court of Appeals
Rodney J. Monheit and Katherine E. Goodrich
Redden v. Clear Creek Skiing Corporation
Colorado Supreme Court
Bruce L. Braley and Tim J. Luetkemeyer
Ronquillo v. EcoClean Home Services
Colorado Supreme Court
Robert E. Caldwell, Jr.
Runkel v. Owners Insurance Company
Colorado Supreme Court
Nelson A. Waneka (with Robyn Levin and Bradley Levin)
Walker v. Ford Motor Company (II)
Colorado Supreme Court
Timothy M. Garvey and Kylie M. Schmidt
2020
Auto-Owners Insurance Co. v. Bolt Factory Lofts Owners Association, Inc.
Colorado Supreme Court
Bradley A. Levin and Nelson A. Waneka
Brown v. Long-Romero and Denver Center for Birth and Wellness
Colorado Supreme Court
Nelson Boyle and Timothy M. Garvey
Busnardo v. Hamilton and Morgan County Commissioners
Colorado Court of Appeals
Anthony Viorst
Colorado Court of Appeals
James Anderson
Delta Airlines, Inc. v. Scholle
Colorado Supreme Court
Nelson P. Boyle, Jessica L. Derakshanian, Thomas Neville
Gill v. Waltz and Swift Transportation Company, LLC
Colorado Supreme Court
Jessica L. Derakshanian and Nelson P. Boyle
Gorges v. Preston Kunkel and Martin Marietta Materials, Inc.
Colorado Supreme Court
Nelson P. Boyle and Timothy M. Garvey
Green, et al. v. Portercare Adventist Health System
Colorado Supreme Court
Keith R. Scranton and S. Paige Singleton
Colorado Supreme Court
Nelson Boyle and Timothy M. Garvey
Harvey v. Catholic Health Initiatives
Colorado Court of Appeals
Robyn Levin Clarke, Nelson Boyle, and David Dean Batchelder
Brief in Support of Petition for Certiorari to the Colorado Supreme Court
Ralph Ogden
Colorado Supreme Court
Nelson A. Waneka
Kritzer and Kritzer v. Qwest Corp., et al.
Colorado Court of Appeals
Jesse Howard Witt
LB Rose Ranch, LLC v. Hansen Construction, Inc.
Colorado Court of Appeals
Jesse Howard Witt
Mullen v. Metropolitan Casualty Insurance Co.
Colorado Court of Appeals
Michael J. Rosenberg and Richard M. Crane
Colorado Court of Appeals
Megan K. Matthews
Colorado Supreme Court
Kylie M. Schmidt, Julia Thompson, Molly Greenblatt, and David P. Mason
Ryser v. Shelter Mutual Insurance Company
Colorado Supreme Court
Michael J. Rosenberg and Richard M. Crane
Smith and Smith v. The Surgery Center at Lone Tree
Colorado Supreme Court
Nelson Boyle
Suranyi, et al. v. Watermark Harvard Square AL, LLC et al.
Colorado Supreme Court
Kylie M. Schmidt and Megan Matthews
Walters, et al. v. CWRV Transport, LLC, et al.
Colorado Court of Appeals
Robyn Levin and Emily O. Monnett
2019
Acierno v. Park View Village, L.L.C.
Colorado Supreme Court
Nelson Boyle and Keith Frankl
Amica Life Insurance Company v. Wertz
Colorado Supreme Court
Timothy M. Garvey
Garcia v. Centura Health Corporation
Colorado Supreme Court
Nelson Boyle for the Colorado Trial Lawyers Association
Grenillo v. Estate of Joel Hansen
Colorado Court of Appeals
John F. Poor
Colorado Supreme Court
Scot C. Kreider, Zachary S. Westerfield, and Logan R. Martin
Martinez v. CSG Redevelopment Partners, LLLP
Colorado Supreme Court
Ralph Ogden
Perischette v. Owners Insurance Co.
Colorado Supreme Court
Elisabeth L. Owen
Redden v. Clear Creek Skiing Corporation
Colorado Court of Appeals
Bruce L. Braley and Tim J. Luetkemeyer
Ryser v. Shelter Mutual Insurance Company
Colorado Supreme Court
Michael J. Rosenberg and Richard M. Crane
Smith v. Surgery Center at SCLT, LLC
Colorado Court of Appeals
Nelson Boyle and Jessica L. Derakhshanian
Planned Parenthood of the Rocky Mountains v. Wagner
Colorado Supreme Court
Ralph Ogden and James Anderson
2018
Amica Life Insurance Company v. Wertz
Court of Appeals for the Tenth Circuit
Timothy M. Garvey
Airth v. Zurich American Insurance Co.
Colorado Supreme Court
Michael J. Rosenberg, Richard M. Crane, Timms R. Fowler
Supreme Court of the United States
Jason Wesoky and Nelson Boyle
Fox v. Alfini and Brady Chiropractic Group PC
Colorado Supreme Court
David P. Mason and J. Bennett Lebsack
In re De La Cruz-Arellano v. State Farm Mutual Automobile Insurance
Colorado Supreme Court
Michael J. Rosenberg
Colorado Supreme Court
Michael T. Mihm, Thomas D. Neville, and Mark E. Saliman
Owners Insurance Co. v. Dakota Station II Condominium Ass’n, Inc.
Colorado Supreme Court
Keith E. Frankl and David Roth
Nanez v. Industrial Claim Apeal Office, et al.
Colorado Supreme Court
John M. Connell and Nelson Boyle
Colorado Court of Appeals
Kylie M. Osterloh, Julia Thompson and David P. Mason
Santich et al. v. VCG Holdings Corp. et al.
Colorado Supreme Court
Joan M. Bechtold
State Farm Fire and Casualty Co. v. De La Cruz-Arellano
Colorado Supreme Court
Michael J. Rosenberg
2017
American Family Mutual Insurance Company v. Barriga
Colorado Supreme Court
Michael J. Rosenberg
Colorado Supreme Court
Joseph F. Bennett
Colorado Court of Appeals
Scot C. Kreider
Colorado Supreme Court
Scot C. Kreider
Colorow Health Care v. Fischer
Colorado Supreme Court
Anthony Viorst
Ferrer v. Okbamicael and Colorado Cab Company, LLC
Colorado Supreme Court
Thomas Neville (Colorado Trial Lawyers Association)
Sarah Parady (Plaintiff Employers’ Lawyers Association
Forfar v. Walmart Stores, Inc.
Colorado Court of Appeals
John F. Poor
Guarantee Trust Life Insurance Company v. Estate of Casper
Colorado Supreme Court
Michael J. Rosenberg
Sarah Parady (Plaintiff Employers’ Lawyer Association)
Keys v. Alliance Real Estate Services
Brief in support of petition for certiorari to the Colorado Supreme Court
Thomas Neville
Lorenzen v. Pinnacol Assurance
Colorado Court of Appeals
Michael J. Rosenberg
Munoz v. American Family Mutual Insurance Company
Colorado Supreme Court
Michael J. Rosenberg and Richard M. Crane
Nanez v. Industrial Claim Appeals Office, et al.
Colorado Court of Appeals
John M. Connell (Workers Compensation Education Association)
Nelson Boyle (Colorado Trial Lawyers Association)
Przekurat ex rel. Przekurat v. Stimson, et al.
Brief supporting petition for certioriari in the Colorado Supreme Court
Jessica L. Derakhshanian
Przekurat ex rel. Przekurat v. Stimson, et al.
Colorado Supreme Court
Jessica L. Derakhshanian and Nelson Boyle
Raup v. Vail Summit Resorts, Inc.
United States District Court for the District of Colorado
Evan P. Banker and Allison R. Hart
Renfandt v. New York Life Insurance Co.
Colorado Supreme Court
Timothy M. Garvey
Rooftop Restorations, LLC v. American Family Insurance Co.
Colorado Supreme Court
Zachary C. Warzel and Melissa A. Hailey
Thompson & Rogers v. Catlin Insurance Company (UK) Ltd.
Colorado Supreme Court
Michael J. Rosenberg
Ybarra v. Greenberg & Sada, PC
Colorado Supreme Court
Ross W. Pulkrabek
Colorado Supreme Court
David K. TeSelle, Brian K. Matise, Nelson P. Boyle
Colorado Court of Appeals
Thomas Neville and Michael J. Rosenberg
2016
American Family Mutual Insurance Company v. Barriga
Colorado Supreme Court
Michael J. Rosenberg
Colorado Supreme Court
Jason B. Wesoky
England v. Amerigas Propane & Indemnity Insurance Co. of North America
Colorado Supreme Court
John M. Connell
Colorado Supreme Court
Joseph F. Bennett
Colorado Supreme Court
Norman R. Mueller & Rachael A. Bellis
Colorado Supreme Court
Jason Wesoky
Magill v. Ford Motor Co., et al.
Colorado Supreme Court
Stuart Ollanik & Julia T. Thompson
Colorado Court of Appeal
Thomas W. Henderson, Brian K. Matise and Nelson Boyle
Rumnock v. Anschutz & American Family Mutual Insurance
Colorado Supreme Court
Zachary C. Warzel & Melissa A. Hailey
Smokebrush Foundation v. City of Colorado Springs
Colorado Court of Appeals
Scot C. Kreider
Villas at Highland Park Homeowners Ass’n, Inc. v. Francescon, et al.
Colorado Supreme Court
Scot C. Kreider
Colorado Supreme Court
Brian K. Matise, David K. TeSelle, Nelson P. Boyle
2015
American Family Mutual Insurance Company v. Hansen
Colorado Supreme Court
Bradley A. Levin & Michael J. Rosenberg
Espinoza v. Arkansas Valley Adventures, LLC
United States Court of Appeals for the Tenth Circuit
Russell R. Hatten & Evan P. Banker
Martinez and Stevens Law Offices v. Mintz and Krajewski
Colorado Supreme Court
Anna N. Martinez
PW ex rel. KW v. Children’s Hospital
Colorado Supreme Court
Anna N. Martinez & Joseph F. Bennett
Colorado Supreme Court
Brian K. Matise, Diane Vaksdal Smith & Nelson P. Boyle
Colorado Supreme Court
Benjamin Sachs, David Mason & John R. Holland
2014
Antero Resources, et al. v. Strudley
Colorado Supreme Court
David A. Klibaner
Board of County Commissioners v. Rodgers and Hazel
Colorado Supreme Court
Arash Jahanian, Matthew Cron, Austin M. Cohen, Siddhartha H. Rathod & Qusair Mohamedbhai
Craft v. Philadelphia Indemnity Insurance Co.
Colorado Supreme Court
Bradley A. Levin
Colorado Supreme Court
Thomas D. Neville
Fleury, et al. v. Intrawest Winter Park Operations, Inc.
Colorado Supreme Court
John F. Poor
Colorado Supreme Court
David P. Mason, Henry Miniter, Benjamin I. Sachs, Lorraine E. Parker
Hepworth-Pawlak Geotechnical, Inc., et al. v. Mid Valley Real Estate Solutions V, LLC
Colorado Supreme Court
Jesse Howard Witt
Lawless, et al. v. Standard Insurance Co., et al.
Colorado Supreme Court
Joseph F. Bennett
Colorado Supreme Court
Jason B. Wesoky and Adrienne M. Tranel
Oasis Legal Finance Group, LLC v. Suthers
Colorado Supreme Court
Anna N. Martinez and Thomas D. Neville
Colorado Supreme Court
Michael J. Rosenberg
2013
Colorado Supreme Court
John F. Poor
Colorado Pool Systems, Inc. & Kitowski v. Scottsdale Insurance Company, et al.
Colorado Supreme Court
Jesse Howard Witt and Marci Achenbach
Daniel v. City of Colorado Springs
Colorado Supreme Court
Joseph F. Bennett
Colorado Court of Appeals
Anthony Viorst
Jacox v. American Family Insurance Co.
Colorado Supreme Court
Michael J. Rosenberg
Jordan v. Panorama Orthopedics & Spine Center
Colorado Supreme Court
Michael Douglass-Harris and Thomas Neville
Colorado Supreme Court
Michael J. Rosenberg
Simpson v. Cedar Springs Hospital, Inc.
Colorado Supreme Court
Julia T. Thompson
2012
American Family Insurance Co. v. Mahoney
Colorado Court of Appeals
James M. Croshal & Mickey W. Smith
Colorado Supreme Court
Thomas D. Neville
Colorado Court of Appeals
John F. Poor
Colorado Supreme Court
John F. Poor and Jesse Howard Witt
Colorado Court of Appeals
Lorraine E. Parker and David P. Mason
Colorado Court of Appeals
Benjamin I. Sachs and David P. Mason
Jacox v. American Family Mutual Insurance Co.
Colorado Court of Appeals
Michael J. Rosenberg
Colorado Court of Appeals
Michael J. Rosenberg
Stresscon Corp. v. Travelers Property Casualty Co. of America
Colorado Court of Appeals
Michael J. Rosenberg
2011
Colorado Supreme Court
Nelson Boyle
Cloer v. Health & Human Services
United States Court of Appeal for the Federal Circuit
Thomas Neville
Colo. Pool Systems, Inc. & -Kitowski v. Scottsdale Ins. Co. et al.
Colorado Court of Appeals
Jesse H. Witt
Dept. of Finance, City & County of Denver v. Treece, Alfrey
Colorado Court of Appeals
John Mann
Kisselman v. American Family Mutual Insurance Co.
Colorado Court of Appeals
Michael J. Rosenberg
Levy v. American Family Mutual Insurance Co.
Colorado Supreme Court
Bradley A. Levin and Nelson A. Waneka
Mercantile Adjustment Bureau, LLC v. Flood
Colorado Supreme Court
David P. Mason
Mountain States Mutual Casualty Company v. Roinestad
Colorado Supreme Court
Bradley A. Levin and David P. Mason
Stodghill v. John B. Pelner MD; Centura Health-St Thomas More Hosp.; & Pelham P. Staples III MD
Colorado Supreme Court
Timms R. Fowler
Wal-Mart Stores, Inc. v. Crossgrove
Colorado Supreme Court
Anthony Viorst
2010
Ahluwalia v. QFA Royalties LLC
Colorado Supreme Court
Joseph J. Mellon and Bennett L. Cohen
Colorado Supreme Court
Joseph F. Bennett & Julia T. Thompson
Gordy v. Mariner Health Care Inc.
Colorado Surpeme Court
Nelson Boyle
Colorado Court of Appeals
Ralph Ogden
Henisse v. First Transit. Inc.
Colorado Supreme Court
Victoria Swanson
Jackson et al. v. Unocal Corp.
Colorado Supreme Court
Robert F. Hill, John H. Evans, Nathan P. Flynn & Thomas D. McFarland
Colorado Supreme Court
Julia T. Thompson and Thomas D. Neville
Colorado Court of Appeals
Robert F. Hill, John H. Evans, Nathan P. Flynn & Thomas D. McFarland
Colorado Supreme Court
Andre Mura (Center for Constitutional Litigation)
Sanderson v. American Family Mutual Insurance Company
Colorado Court of Appeals
Thomas L. Roberts and Michael J. Rosenberg
Colorado Supreme Court
Willaim J. Hansen
Colorado Supreme Court
Ross W. Pulkrabek and Daniel A. Wartell
Colorado Supreme Court
Kevin S. Hannon
2009
Colorado Coffee Bean, LLC v. Peaberry Coffee, Inc.
Colorado Court of Appeals
Bradley A. Levin
Colorado Supreme Court
Alexa R. Salg, Thomas L. Roberts & Beth A. Tomerlin
Amicus Brief in Support of Petition for Certiorari to the Colorado Supreme Court
Joseph F. Bennett & Julia T. Thompson
Gordy v. Mariner Health Care, Inc.
Colorado Court of Appeals
Benjamin Sachs
Moffet v. Life Care Centers of America
Colorado Supreme Court
Anthony Viorst
Nunn v. Mid-Century Insurance Company
Colorad Supreme Court
Bradley A. Levin (Amicus on the Petition for Cert)
Nunn v. Mid-Century Insurance Company
Colorado Supreme Court
Steven Taffet
Colorado Supreme Court
William J. Hansen
2008
Briggs v. American National Property & Casualty
Colorado Court of Appeals
Bradley A. Levin
Farmers’ Insurance Exchange v. Benzing
Colorado Supreme Court
Bradley A. Levin & Alexa R. Salg
Grote v. Charter Oak Fire Ins Co.
Colorado Court of Appeals
Bradley A. Levin
Henisse v. First Transit, Inc.
Colorado Court of Appeals
Victoria C. Swanson
Ivkov v. Progressive Halcyon Insurance Company
Colorado Court of Appeals
Bradley A. Levin
Colorado Court of Appeals
Bradley A. Levin
Richardson v. Hartford Insurance Company
Colorado Court of Appeals
Bradley A. Levin
Richardson v. Mendota Insurance Company
Colorado Court of Appeals
Bradley A. Levin
Rider v. State Farm Mutual Auto Insurance Company
Colorado Court of Appeals
Bradley A. Levin and Zachary C. Warzel
Robbins v. Amica Mutual Insurance Company
Colorado Court of Appeals
Bradley A. Levin
Wagner v. Travelers Property Casualty Company
Colorado Court of Appeals
Bradley A. Levin
Wertz v. Travelers Property Casualty Company
Colorado Court of Appeals
Bradley A. Levin
2007
Brodeur v. American Home Assurance
Colorado Supreme Court
Bradley A. Levin
Crow v. Penrose-St. Francis Health Care System
Colorado Supreme Court
Francis V. Cristiano & Julia T. Thompson
Colorado Supreme Court
William J. Hansen
Colorado Supreme Court
Ross B.H. Buchanan
Lombard v. Colorado Outdoor Education Center
Colorado Supreme Court (two briefs)
Mac Hester
Colorado Supreme Court
Joseph F. Bennett
Premier Home Protection v. ADT Security
Colorado Supreme Court
Bradley A. Levin
Colorado Supreme Court
Victoria C. Swanson
Colorado Supreme Court
Anthony Viorst
Colorado Supreme Court
Bennett S. Aisenberg & H. Paul Himes
2006
Colorado Supreme Court
James M. Croshal
Colorado Supreme Court
Jesse Howard Witt
Colorado Court of Appeals
Bradley A. Levin
Colorado Supreme Court
John Robert Holland, Anna Cayton-Holland & Jerome M. Reinan
2005
Colorado Court of Appeals
Bruce J. Kaye & Mari C. Bush
Colorado Court of Appeals
William J. Hansen
2004
Colorado Court of Appeals
Victoria C. Swanson
