Client List
Gates, Gonter, Guy, Proudfoot & Muench LLP, Attorneys at Law, focuses its practice on insurance defense, business law, construction defect and employment litigation matters. From our numerous offices, we are equipped to serve clients throughout Southern California, from Bakersfield to San Diego.
We represent a wide range of clients throughout all of our practice areas, both plaintiffs and defendants, in matters both large and small. In insurance defense-related matters, we serve some of the largest carriers in the country, who entrust us to successfully and economically represent them in an ongoing flow of matters.
Our business clients include closely-held and publicly-owned companies from virtually every local industry, including technology, financial services, real estate development, construction, agriculture, manufacturing and distribution, retail trade, health care, government, hospitality, food services, transportation, and professional services.
Representative Clients have included:
- 21st Century Insurance Company
- American International Group, Inc. (AIG)
- Brunswick Corporation
- Costco Wholesale Corporation
- Country Coach
- DaimlerChrysler Corporation
- Gallagher Bassett Services, Inc.
- General Motors Corporation
- Giant R.V.
- Greyhound Lines, Inc.
- Hilton Hotels
- Honda North America
- Isuzu Motors America, Inc.
- Jayco, Inc.
- La Mesa RV, Inc.
- Liberty Mutual Group
- Little Caesars
- Mercury Insurance Group
- National RV
- Network Adjustors
- Porsche Cars N. America, Inc.
- Pro-One Performance Manufacturing, Inc.
- Rexhall Industries
- Toyota Motor Sales, USA, Inc
- Wausau Insurance Company
- Zurich American Specialty Health Care
Our Firm Locations
Orange County Office

Gates, Gonter, Guy, Proudfoot & Muench LLP, Civil Litigation Attorneys
38 Discovery, Suite 200
Irvine, CA 92618
Irvine, CA 92618
Office Managing Partner:
K. Robert Gonter, Jr.
San Diego Office

Gates, Gonter, Guy, Proudfoot & Muench LLP
15373 Innovation Drive, Suite 170
San Diego, CA 92128
San Diego, CA 92128
Office Managing Partner:
Douglas D. Guy
Los Angeles Office

Gates, Gonter, Guy, Proudfoot & Muench LLP.
355 South Grand Ave, Suite 2450
Los Angeles, CA 90017
Los Angeles, CA 90017
Office Managing Partner:
Matthew M. Proudfoot
Ontario Office

Gates, Gonter, Guy, Proudfoot & Muench LLP
3350 Shelby St., Suite 200
Ontario, CA 91764
Ontario, CA 91764
Office Managing Partner:
Douglas D. Guy