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William D. Claster

See more on William D. Claster

Judge
Complex Civil Panel
Orange County Superior Court
Civil Complex Center
Department/Division: CX101 Days: M-F Courtroom/Floor: 1st

751 W Santa Ana Blvd
Santa Ana , CA 92701
(657) 622-5301



Appointed Orange County Superior court judge by Gov. Arnold Schwarzenegger on Dec. 3, 2010; Gibson, Dunn & Crutcher LLP, Partner 1984-2010, associate 1976-1984

UCLA School of Law



Judicial Profiles
Title Court Published
Avoiding Trials Orange County (Santa Ana) Aug. 23, 2019
William Claster Orange County (Westminster) Dec. 18, 2011

Rulings
Case Category Published
Wimber v. Scott
affirmed
 Civil Procedure Aug. 1, 2025
Muha v. Experian Information Solutions
affirmed
 Consumer Law Oct. 29, 2024
Mojave Pistachios, LLC v. Superior Court (Indian Wells Valley Groundwater Authority
petition denied
 Tax Feb. 9, 2024
Modification: Hagey v. Solar Service Experts
reversed and remanded
 Consumer Law Sep. 26, 2023
Hagey v. Solar Service Experts
reversed and remanded
 Consumer Law Aug. 30, 2023
Grace v. The Walt Disney Company
reversed
 Tax Jul. 13, 2023
Olen Properties Corp. v. City of Newport Beach
affirmed
 Environmental Law Jul. 10, 2023
Modification: Thompson v. Spitzer
reversed and remanded
 Constitutional Law May 8, 2023
Thompson v. Spitzer
reversed and remanded
 Constitutional Law Apr. 12, 2023
People ex rel. State Farm Mutual Automobile Ins. Co. v. Rubin
reversed and remanded
 Insurance Dec. 15, 2021
Medina v. Equilon Enterprises, LLC
reversed
 Employment Law Sep. 14, 2021
Modification: People ex rel. Allstate Ins. Co. v. Rubin
Anti-SLAPP Jul. 23, 2021
People ex rel. Allstate Insurance Co. v. Rubin
affirmed
 Anti-SLAPP Jul. 14, 2021
Daneshmand v. City of San Juan Capistrano
affirmed
 Government Feb. 18, 2021
Modification: People for the Ethical Operation of Prosecutors v. Spitzer
reversed
 Constitutional Law Sep. 10, 2020
People for the Ethical Operation of Prosecutors v. Spitzer
reversed
 Constitutional Law Aug. 14, 2020
Nunez v. Nevell Group, Inc.
affirmed
 Arbitration May 30, 2019
Yu v. Liberty Surplus Ins. Corp.
affirmed
 Civil Procedure Jan. 7, 2019
Quiles v. Parent
affirmed
 Civil Procedure Nov. 6, 2018
Orange Catholic Foundation v. Arvizu
affirmed
 probate_and_trusts Oct. 19, 2018
Brady v. Bayer Corp.
reversed
 Consumer Law Sep. 11, 2018
Colaco v. Cavotec SA
reversed and remanded
 Contracts Aug. 13, 2018
California Self-Insurers' Security Fund v. Superior Court (Orange)
petition granted
 Attorneys Jan. 30, 2018
The Traveler's Property Casualty Co. of America v. Actavis Inc.
Insurance Nov. 8, 2017

Verdicts & Settlements
Case Name Topic Role Published
Kathleen Grace, Regina Delgado, Alicia Grijalva, Javier Terrazas, and all others similarly situated v. The Walt Disney Company, Walt Disney Parks and Resorts US Inc., Sodexo Inc., Sodexomagic LLC, and Does 1-100 Employment Law judge May 23, 2025
Xavier Nunez, on behalf of himself and all others similarly situated v. Nevell Group Inc., and Does 1-100, inclusive Employment Law judge Nov. 15, 2024
Cristobal Flores-Ocampo, as an individual and on behalf of others similarly situated v. Laguna Cookie Company Inc., and Does 1-50, inclusive Employment Law judge Oct. 25, 2024
Sandra Palencia v. JK959 Global Inc. Employment Law judge Oct. 25, 2024
Fabiola Castillo et al. v. Hoag Memorial Hospital Presbyterian Consumer Law judge Jan. 19, 2024
Maria Lopez, Marco Diaz Jimenez and Jesus Martinez Dominguez, individually and on behalf of all others similarly situated v. Harvest Fresh Market, and Does 1-50 Employment Law judge Dec. 8, 2023
Jashar Bryant, on behalf of himself, and all others similarly situated and on behalf of himself as an "aggrieved employee" on behalf of other "aggrieved employees" under the Labor Code Private Attorneys General Act of 2004 v. Pinnacle Cabling & Construction Inc., Arijet Corporation, dba Arijet Communications, and Does -50, inclusive Employment Law judge Sep. 1, 2023
Jose Maldonado, individually, on a representative basis, and on behalf of all others similarly situated v. Add-On Computer Peripherals LLC, and Does 1 through 10, inclusive Employment Law judge Jul. 28, 2023
Melissa Moss, as an individual and on behalf of all others similarly situated v. Sares-Regis Operating Company, L.P., and Does 1 through 50, inclusive Employment Law judge Jun. 9, 2023
Wendy Sarinana and Shelbi McFarland, as individuals and on behalf of all similarly employees v. Shelfbot Co., and Does 1-50, inclusive Employment Law judge Apr. 14, 2023
Matthew Clardy, individually and on behalf of others similarly situated, and as an aggrieved employee and Private Attorney General v. Inmar Inc., Inmar Supply Chain Solutions LLC, and Does 1 through 50, inclusive Employment Law judge Feb. 17, 2023
Larissa Marantz and Morgan Gill, individuallym and on behalf of all others similarly situated v. Laguna College of Art and Design Employment Law judge Jan. 20, 2023
De Trinh and Noe Quijada on behalf of themselves and all others similarly situated v. Golden State Overnight Delivery Service Inc., and Does 1 through 50, inclusive Employment Law judge Nov. 18, 2022
Rachel Segui, individually, and on behalf of all persons similarly situated v. Original Mike's Enterprises LLC, Michael Harrah, Sas Investments L.P., O.M. Restaurant Management LLC, and Does 1-100, inclusive Employment Law judge Oct. 7, 2022
Joshua Louka, Taura Perry, Bob Hooks, on behalf of themselves and all similarly situated persons, and the general public v. Nations Direct Mortgage LLC, and Does a through 25, inclusive Employment Law judge Sep. 2, 2022
Trang Nguyen v. Nordstrom, Inc. Labor Law judge Jun. 11, 2021
Anthony Ibrahim, Jared Lee, on behalf of themselves and all others similarly situated v. Climatec Inc., KX2 Holdings Building Technologies Group, L.P., and Does 1 through 50, inclusive Employment Law judge Jan. 10, 2020
Eduardo Acevedo, Luis J. Bernal, Juan N. Castillo, et al. v. Building Materials Holding Corporation, Selectbuild Construction Inc., Selectbuild, L.P., Selectbuild Northern California Inc., Selectbuild Southern California Inc., Selectbuild Arizona, LLC, Selectbuild Nevada Inc., Selectbuild Mechanical LLC, Selectbuild Trim, LLC, KBI Stucco Inc., KBI Employment Law Defendant Dec. 19, 2009
American Interbanc Mortgage LLC v. Novastar Home Mortgage Inc. ("NovaStar") Antitrust Plaintiff Aug. 4, 2007
Michael Gnesda v. United Parcel Services Inc., UPS General Services Inc., Stanley Jones Employment Law Defendant Sep. 24, 2005
Caroline Cedillo v. California Federal Bank Employment Law Defendant May 31, 2001
Ha Ta v. Mitsubishi Motor Sales of America, et al. Employment Law Defendant Feb. 21, 1998
John R. Neal v. Los Angeles Times Employment Law Defendant Nov. 1, 1997
Confidential Employment Law Defendant Nov. 23, 1996
Andrew Furuto; Jeffrey Nitta v. California Federal Bank; Gary Tharpe; Greg Sayegh; Doug Bronson; Jim Tayler, et al. Employment Law Defendant Mar. 23, 1996
Title Court Published
Avoiding Trials Orange County (Santa Ana) Aug. 23, 2019
William Claster Orange County (Westminster) Dec. 18, 2011
Case Category Published
Wimber v. Scott
affirmed
 Civil Procedure Aug. 1, 2025
Muha v. Experian Information Solutions
affirmed
 Consumer Law Oct. 29, 2024
Mojave Pistachios, LLC v. Superior Court (Indian Wells Valley Groundwater Authority
petition denied
 Tax Feb. 9, 2024
Modification: Hagey v. Solar Service Experts
reversed and remanded
 Consumer Law Sep. 26, 2023
Hagey v. Solar Service Experts
reversed and remanded
 Consumer Law Aug. 30, 2023
Grace v. The Walt Disney Company
reversed
 Tax Jul. 13, 2023
Olen Properties Corp. v. City of Newport Beach
affirmed
 Environmental Law Jul. 10, 2023
Modification: Thompson v. Spitzer
reversed and remanded
 Constitutional Law May 8, 2023
Thompson v. Spitzer
reversed and remanded
 Constitutional Law Apr. 12, 2023
People ex rel. State Farm Mutual Automobile Ins. Co. v. Rubin
reversed and remanded
 Insurance Dec. 15, 2021
Medina v. Equilon Enterprises, LLC
reversed
 Employment Law Sep. 14, 2021
Modification: People ex rel. Allstate Ins. Co. v. Rubin
Anti-SLAPP Jul. 23, 2021
People ex rel. Allstate Insurance Co. v. Rubin
affirmed
 Anti-SLAPP Jul. 14, 2021
Daneshmand v. City of San Juan Capistrano
affirmed
 Government Feb. 18, 2021
Modification: People for the Ethical Operation of Prosecutors v. Spitzer
reversed
 Constitutional Law Sep. 10, 2020
People for the Ethical Operation of Prosecutors v. Spitzer
reversed
 Constitutional Law Aug. 14, 2020
Nunez v. Nevell Group, Inc.
affirmed
 Arbitration May 30, 2019
Yu v. Liberty Surplus Ins. Corp.
affirmed
 Civil Procedure Jan. 7, 2019
Quiles v. Parent
affirmed
 Civil Procedure Nov. 6, 2018
Orange Catholic Foundation v. Arvizu
affirmed
 probate_and_trusts Oct. 19, 2018
Brady v. Bayer Corp.
reversed
 Consumer Law Sep. 11, 2018
Colaco v. Cavotec SA
reversed and remanded
 Contracts Aug. 13, 2018
California Self-Insurers' Security Fund v. Superior Court (Orange)
petition granted
 Attorneys Jan. 30, 2018
The Traveler's Property Casualty Co. of America v. Actavis Inc.
Insurance Nov. 8, 2017
Case Name Topic Role Published
Kathleen Grace, Regina Delgado, Alicia Grijalva, Javier Terrazas, and all others similarly situated v. The Walt Disney Company, Walt Disney Parks and Resorts US Inc., Sodexo Inc., Sodexomagic LLC, and Does 1-100 Employment Law judge May 23, 2025
Xavier Nunez, on behalf of himself and all others similarly situated v. Nevell Group Inc., and Does 1-100, inclusive Employment Law judge Nov. 15, 2024
Cristobal Flores-Ocampo, as an individual and on behalf of others similarly situated v. Laguna Cookie Company Inc., and Does 1-50, inclusive Employment Law judge Oct. 25, 2024
Sandra Palencia v. JK959 Global Inc. Employment Law judge Oct. 25, 2024
Fabiola Castillo et al. v. Hoag Memorial Hospital Presbyterian Consumer Law judge Jan. 19, 2024
Maria Lopez, Marco Diaz Jimenez and Jesus Martinez Dominguez, individually and on behalf of all others similarly situated v. Harvest Fresh Market, and Does 1-50 Employment Law judge Dec. 8, 2023
Jashar Bryant, on behalf of himself, and all others similarly situated and on behalf of himself as an "aggrieved employee" on behalf of other "aggrieved employees" under the Labor Code Private Attorneys General Act of 2004 v. Pinnacle Cabling & Construction Inc., Arijet Corporation, dba Arijet Communications, and Does -50, inclusive Employment Law judge Sep. 1, 2023
Jose Maldonado, individually, on a representative basis, and on behalf of all others similarly situated v. Add-On Computer Peripherals LLC, and Does 1 through 10, inclusive Employment Law judge Jul. 28, 2023
Melissa Moss, as an individual and on behalf of all others similarly situated v. Sares-Regis Operating Company, L.P., and Does 1 through 50, inclusive Employment Law judge Jun. 9, 2023
Wendy Sarinana and Shelbi McFarland, as individuals and on behalf of all similarly employees v. Shelfbot Co., and Does 1-50, inclusive Employment Law judge Apr. 14, 2023
Matthew Clardy, individually and on behalf of others similarly situated, and as an aggrieved employee and Private Attorney General v. Inmar Inc., Inmar Supply Chain Solutions LLC, and Does 1 through 50, inclusive Employment Law judge Feb. 17, 2023
Larissa Marantz and Morgan Gill, individuallym and on behalf of all others similarly situated v. Laguna College of Art and Design Employment Law judge Jan. 20, 2023
De Trinh and Noe Quijada on behalf of themselves and all others similarly situated v. Golden State Overnight Delivery Service Inc., and Does 1 through 50, inclusive Employment Law judge Nov. 18, 2022
Rachel Segui, individually, and on behalf of all persons similarly situated v. Original Mike's Enterprises LLC, Michael Harrah, Sas Investments L.P., O.M. Restaurant Management LLC, and Does 1-100, inclusive Employment Law judge Oct. 7, 2022
Joshua Louka, Taura Perry, Bob Hooks, on behalf of themselves and all similarly situated persons, and the general public v. Nations Direct Mortgage LLC, and Does a through 25, inclusive Employment Law judge Sep. 2, 2022
Trang Nguyen v. Nordstrom, Inc. Labor Law judge Jun. 11, 2021
Anthony Ibrahim, Jared Lee, on behalf of themselves and all others similarly situated v. Climatec Inc., KX2 Holdings Building Technologies Group, L.P., and Does 1 through 50, inclusive Employment Law judge Jan. 10, 2020
Eduardo Acevedo, Luis J. Bernal, Juan N. Castillo, et al. v. Building Materials Holding Corporation, Selectbuild Construction Inc., Selectbuild, L.P., Selectbuild Northern California Inc., Selectbuild Southern California Inc., Selectbuild Arizona, LLC, Selectbuild Nevada Inc., Selectbuild Mechanical LLC, Selectbuild Trim, LLC, KBI Stucco Inc., KBI Employment Law Defendant Dec. 19, 2009
American Interbanc Mortgage LLC v. Novastar Home Mortgage Inc. ("NovaStar") Antitrust Plaintiff Aug. 4, 2007
Michael Gnesda v. United Parcel Services Inc., UPS General Services Inc., Stanley Jones Employment Law Defendant Sep. 24, 2005
Caroline Cedillo v. California Federal Bank Employment Law Defendant May 31, 2001
Ha Ta v. Mitsubishi Motor Sales of America, et al. Employment Law Defendant Feb. 21, 1998
John R. Neal v. Los Angeles Times Employment Law Defendant Nov. 1, 1997
Confidential Employment Law Defendant Nov. 23, 1996
Andrew Furuto; Jeffrey Nitta v. California Federal Bank; Gary Tharpe; Greg Sayegh; Doug Bronson; Jim Tayler, et al. Employment Law Defendant Mar. 23, 1996
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