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
Negah M. Daily
(949) 679-0052
ndaily@umbergzipser.com
Negah specializes in commercial litigation. She assists clients of all sizes in a range of industries including commercial real estate and real estate finance.
Ryan S. 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.
Phillip R. Kaplan
Partner
(949) 679-0052- pkaplan@umbergzipser.com
Phillip R. Kaplan is a recognized leader in the Orange County legal community, and is an accomplished business trial lawyer with a record of handling his client’s most difficult cases.
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
Super Lawyers 2021 Selects Six Umberg/Zipser Attorneys
Umberg/Zipser LLP is proud to announce that six of its partners have been included in the Southern California Super Lawyers list for 2021, a recognition reserved for only five percent of the lawyers in California. Co-founding partner Dean Zipser also has been recognized again as a 2021 Top 50 Orange County Lawyer and Top 100 Southern California Lawyer. The following Umberg/Zipser attorneys have been
Tom Umberg Featured in Daily Journal Article: Umberg Appointed New State Senate Judiciary Chair
Umberg/Zipser LLP (U/Z) co-founding partner, California State Senator and newly appointed Chair of the California Senate Judiciary Committee Thomas J. Umberg was featured in a Daily Journal article titled, “New State Senate Judiciary Chair Likes to Get into the Weeds” published on December 16, 2020. The article highlights Tom’s significant impact as a California State senator and explains that a goal of the California
U/Z Honored as Law Firm of the Year at the VLI 2020 Lawyers for Warriors Event
U/Z was proud to be recognized as the 2020 Law Firm of the Year by the Veterans Legal Institute (VLI) at its annual Lawyers for Warriors Networking and Fundraising Event.
Umberg/Zipser Again Named to Orange County Best Law Firms List for 2021
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 and Best Lawyers® for the Orange County metropolitan area. The firm has received this recognition each year since it was formed. The ranking showcases top law firms recognized by clients and peers for delivering professional excellence
Business Litigation Partner Phillip Kaplan Joins Umberg/Zipser
Umberg/Zipser LLP is pleased to announce that partner Phillip R. Kaplan has joined the firm.
Attorneys Ethan Feng and Negah Daily Join U/Z
Umberg/Zipser LLP (U/Z) has increased our litigation ranks. Commercial litigators Ethan Feng and Negah Daily have joined the firm.
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.