General Information
Overview
Content is provided by the firm.
Exceptional client service, creative thinking, problem solving, and decades of proven success. These are the hallmarks of Umberg Zipser LLP. Our clients face difficult and complex issues — issues that may threaten their key assets or ventures, their most valuable people, their reputations, or even their ongoing viability. We bring the expertise, ingenuity, and experience to deliver the results they seek, with the efficiency and flexibility they need.
We never lose sight of our client’s objectives, and work creatively to achieve them. Our clients come to us because we deliver the highest quality work product together with unparalleled service. Collectively, we have tried countless cases to successful verdict. But trial isn’t always the right answer. Our pretrial strategies, successful motion practice, and extensive alternative dispute resolution experience enable us to achieve superb results without a trial, and even keep litigation from occurring against our clients. With big-firm experience and small-firm efficiencies, along with an established record of trial and litigation success, we are equally adept at handling the multi-party, complex case as well as more limited and specialized matters where the utmost efficiency is required.
Our attorneys are recognized experts in a wide array of practice areas, including business litigation, intellectual property, class actions, trade secrets, real estate, and white collar criminal defense. Indeed, our peers and the legal community continue to recognize our accomplishments, as we have multiple awards across a variety of organizations and publications. The firm’s lawyers are consistently named as Best Lawyers in America® and Super Lawyers®. Last year, for example, founding partner Dean Zipser was named by Best Lawyers as the Lawyer of the Year for Bet-the-Company litigation in Orange County. At Umberg Zipser, we pride ourselves on our ability to handle a wide variety of matters for a diverse client base. We know that clients’ needs differ from client to client, and matter to matter. In response to these needs, we offer a range of flexible billing arrangements that promote efficiency and predictability. Our client focus, devotion, and flexibility have enabled us to maintain client relationships that span decades.
We are strong believers in giving back to our profession and our community – in actions, and not just words or dollars. Our lawyers are actively involved as leaders of multiple professional, pro bono, and charitable organizations, as well as governmental positions.
We never lose sight of our client’s objectives, and work creatively to achieve them. Our clients come to us because we deliver the highest quality work product together with unparalleled service. Collectively, we have tried countless cases to successful verdict. But trial isn’t always the right answer. Our pretrial strategies, successful motion practice, and extensive alternative dispute resolution experience enable us to achieve superb results without a trial, and even keep litigation from occurring against our clients. With big-firm experience and small-firm efficiencies, along with an established record of trial and litigation success, we are equally adept at handling the multi-party, complex case as well as more limited and specialized matters where the utmost efficiency is required.
Our attorneys are recognized experts in a wide array of practice areas, including business litigation, intellectual property, class actions, trade secrets, real estate, and white collar criminal defense. Indeed, our peers and the legal community continue to recognize our accomplishments, as we have multiple awards across a variety of organizations and publications. The firm’s lawyers are consistently named as Best Lawyers in America® and Super Lawyers®. Last year, for example, founding partner Dean Zipser was named by Best Lawyers as the Lawyer of the Year for Bet-the-Company litigation in Orange County. At Umberg Zipser, we pride ourselves on our ability to handle a wide variety of matters for a diverse client base. We know that clients’ needs differ from client to client, and matter to matter. In response to these needs, we offer a range of flexible billing arrangements that promote efficiency and predictability. Our client focus, devotion, and flexibility have enabled us to maintain client relationships that span decades.
We are strong believers in giving back to our profession and our community – in actions, and not just words or dollars. Our lawyers are actively involved as leaders of multiple professional, pro bono, and charitable organizations, as well as governmental positions.
Rankings
Umberg Zipser LLP is metro ranked in 10 practice areas. Best Law Firms rankings are based on a rigorous evaluation process.
Read how Best Law Firms ranks firmsMetro Rankings
Orange County
Tier 1 for Bet-the-Company Litigation
Tier 1 for Commercial Litigation
Tier 1 for Litigation - Banking and Finance
Tier 1 for Litigation - Intellectual Property
Tier 1 for Litigation - Real Estate
Highlighted Client Comments
All client comments represent the opinions of the people who provided them. All potential clients are urged to remember that no two cases are ever completely alike and that the result in one case does not guarantee a similar result in another case.
Commercial Litigation
I appreciate Umberg Zipser's quick responses and work to keep the cost down.
Doug Wead
Commercial Litigation
Umberg Zipser provides excellent service.
David Harshman
– Toshiba America Information Systems, Inc.
Commercial Litigation
We have found Umberg Zipser to be thorough, diligent and technologically savvy.
Commercial Litigation
Umberg Zipser attorneys are excellent, timely and made a painful experience much easier.
Doug Wead
Commercial Litigation
Umberg Zipser is a fantastic firm. They are substantively outstanding, but also know the local bench and bar.
Dan Sasse,
Partner
– Crowell & Moring
Commercial Litigation
I was co-counsel with Umberg Zipser in a litigation for the State Controller's Office of the state of California. They did first-rate work.
Phillip Kaplan,
Partner
– Manatt, Phelps & Phillips, LLP
Commercial Litigation
Umberg Zipser is the cream of the crop for litigation and does it in a cost-effective manner.
Bryan Smith
Commercial Litigation
Upon retention of Umberg Zipser, under the guidance and leadership of partners Dean Zipser and Carole Reagan, immediately analyzed the salient facts and controlling law, developed a cogent theory of the case, and implemented an aggressive course of action. Throughout the approximately seven month period that the firm represented CalVet, I, along with my colleagues in the Department's Farm & Home Division, were universally impressed by Mr. Zipser's and Ms. Reagan's responsiveness, keen insight, unwavering courtesy, candor, unassailable honesty, and unimpeachable integrity. I would not hesitate for one moment to retain Umberg Zipser and any of its attorneys to represent CalVet in any form of litigation.
Todd Irby
– Placer County Superior Court
Rankings
Regional Rankings
Orange County
Tier 1 for Bet-the-Company Litigation
Tier 1 for Commercial Litigation
Tier 1 for Litigation - Banking and Finance
Tier 1 for Litigation - Intellectual Property
Tier 1 for Litigation - Real Estate
Tier 1 for Trademark Law
Tier 2 for Copyright Law
Tier 2 for Litigation - Securities
Tier 2 for Professional Malpractice Law - Plaintiffs
Tier 3 for Litigation - Patent
Practice Areas
The below are areas of legal specialty volunteered by the firm and do not designate a specialty in which a Best Law Firms ranking is held.
- Commercial Litigation
- Criminal Defense: White-Collar
- Ethics and Professional Responsibility Law
- Government Relations Practice
- Legal Malpractice Law - Defendants
- Litigation - Banking and Finance
- Litigation - Construction
- Litigation - Environmental
- Litigation - Intellectual Property
- Litigation - Labor and Employment
- Litigation - Real Estate
- Patent Law
- Trade Secrets Law
- Trademark Law
Individuals Recognized in The Best Lawyers in America®
Umberg Zipser LLP has 10 lawyers recognized for individual performance in the 2025 edition of The Best Lawyers in
America®.
By receiving this Best Lawyers recognition from their peers for their professional excellence, these lawyers made Umberg Zipser LLP eligible for evaluation for Best Law Firms rankings.
For almost two decades, Best Lawyers has awarded these singular accolades, making them the foundation of our Best Law Firms awards.
Read more about our Best Lawyers process here.
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Client Comments
All client comments represent the opinions of the people who provided them. All potential clients are urged to remember that no two cases are ever completely alike and that the result in one case does not guarantee a similar result in another case.
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