Experience
Integrity
Results
Firm Overview
About Us
Umberg/Zipser LLP is a premier business litigation and intellectual property boutique law firm. Drawing on decades of experience in some of the nation’s largest and most prestigious law firms, as well as national and state government service, our lawyers provide exceptional work with the unparalleled personal service of a boutique.
Our Culture
Umberg/Zipser believes in giving back, both to our community and to our profession. We regularly handle pro bono matters, and our attorneys devote countless hours to supporting — and leading — professional and community organizations. It would be difficult to find another firm in Orange County, regardless of size, that can boast the number of community leaders that exist at Umberg/Zipser.
Why Us?
By combining big-firm experience with small-firm efficiencies, we can handle complex matters for large companies, but we also are nimble enough to represent small companies and entrepreneurs. Our clients come to us because we deliver the highest quality work product together with extraordinary service.
Practice Areas
We Have the Experience to Handle a Wide Array of Matters
Professionals
We Have Exceptional Attorneys Who Stand Ready to Serve Our Clients
Nicole Ballew Chang, Ph.D.
- (949) 679-0052
- nballewchang@umbergzipser.com
Brent S. Colasurdo
- (949) 679-0052
- bcolasurdo@umbergzipser.com
Ryan Dean
- (949) 679-0052
- rdean@umbergzipser.com
Ethan Feng
- (949) 679-0052
- ethanfeng@umbergzipser.com
Ethan Feng is an associate at Umberg/Zipser where he focuses his practice in complex commercial litigation, professional liability disputes, and employment litigation.
Martin Fessenmaier, Ph.D.
- (949) 679-0052
- mfessenmaier@umbergzipser.com
Mark A. Finkelstein
- (949) 679-0052
- mfinkelstein@umbergzipser.com
Mark Finkelstein is a partner at Umberg/Zipser with more than 25 years of intellectual property and complex litigation experience.
Scott B. Garner
- (949) 679-0052
sgarner@umbergzipser.com
Scott B. Garner is a partner at Umberg/Zipser in Irvine, California. He represents clients in complex business litigation matters, with a particular focus on professional liability disputes and ethics counseling.
Priti Phukan, Ph.D.
- (949) 679-0052
- pphukan@umbergzipser.com
Carole E. Reagan
- (949) 679-0052
- creagan@umbergzipser.com
Todd W. Smith
- (949) 679-0052
- tsmith@umbergzipser.com
Adina W. Stowell
- (949) 679-0052
- astowell@umbergzipser.com
Adina Stowell specializes in complex litigation involving corporate, commercial, trade secret, and real estate disputes in both state and federal courts.
Mei Tsang
- (949) 679-0052
- mtsang@umbergzipser.com
Thomas J. Umberg
- (949) 679-0052
- tumberg@umbergzipser.com
Vikki L. Vander Woude
- (949) 679-0052
- vvanderwoude@umbergzipser.com
Dean J. Zipser
(949) 679-0052- dzipser@umbergzipser.com
Dean J. Zipser is a recognized leader in the Orange County legal community, having served as President of the Orange County Bar Association (OCBA) along with many other professional leadership positions.
NEWS and EVENTS
Umberg/Zipser in the Community
Priti Phukan Selected as a 2020 Southern California Super Lawyers Rising Star
Umberg/Zipser LLP (U/Z) is proud to announce that Priti Phukan, Ph.D. has been recognized as a 2020 Southern California Super Lawyers Rising Star for Intellectual Property. The Rising Stars list recognizes no more than 2.5 percent of attorneys in each state. Priti concentrates her practice on patent and trademark prosecution across various technology industries, including chemistry, life sciences, diagnostics, medical devices, and mechanical engineering.
Umberg/Zipser Partner Scott Garner Becomes 2020 President of the Orange County Bar Association
Umberg/Zipser LLP (U/Z) is pleased to announce that partner Scott B. Garner was sworn in as the Orange County Bar Association’s President…
Super Lawyers 2020 Selects Five Umberg/Zipser Attorneys
Umberg/Zipser LLP is proud to announce that five of its partners have again been included in the Southern California Super Lawyers list for 2020…
Umberg/Zipser Again Named to Orange County Best Law Firms List for 2020
Umberg/Zipser LLP (U/Z) is pleased to announce that the firm again has been ranked Tier One in the “Best Law Firms” list by U.S. News & World Report…
Umberg/Zipser Again Included in the Civic 50 OC List for 2019
Umberg/Zipser is honored to be named again one of Orange County’s 50 most community-minded companies by the Orange County Business Journal in partnership with…
Umberg/Zipser Again Named to Benchmark Litigation Rankings
Umberg/Zipser is pleased to announce the firm has been listed as a “California- Recommended 2020” firm by Benchmark Litigation U.S. In addition to the firm’s rankings, attorneys…
CAREERS
If you are an exceptional attorney who thrives on delivering top-notch client service, and would enjoy practicing law in a small, collegial environment, we invite you to contact us to learn more about how we can support your career growth. Umberg/Zipser is proud of its diversity, and is an equal opportunity employer.