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
Brent S. Colasurdo
- (949) 679-0052
- [email protected]
Ryan S. Dean
- (949) 679-0052
- [email protected]
Ethan Feng
- (949) 679-0052
- [email protected]
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
- [email protected]
Mark A. Finkelstein
- (949) 679-0052
- [email protected]
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
[email protected]
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.
Amy Lesperance Han
- 949.679.0052
- [email protected]
Amy Lesperance Han is an associate with Umberg/Zipser and focuses her practice on complex commercial litigation. Amy has experience litigating a wide variety of complex disputes, representing clients from the discovery phase through trial and appeal.
Phillip R. Kaplan
Partner
(949) 679-0052- [email protected]
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.
Molly Magnuson
- (949) 679-0052
- [email protected]
Molly Magnuson is an experienced, results-oriented litigation attorney. Molly’s experience comes not only from working for significant clients, but also from working in some of America’s top law firms, which has created exposure to high-stakes, complex commercial litigation.
Priti Phukan, Ph.D.
- (949) 679-0052
- [email protected]
Carole E. Reagan
- (949) 679-0052
- [email protected]
Todd W. Smith
- (949) 679-0052
- [email protected]
Adina W. Stowell
- (949) 679-0052
- [email protected]
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
- [email protected]
Thomas J. Umberg
- (949) 679-0052
- [email protected]
Vikki L. Vander Woude
- (949) 679-0052
- [email protected]
Dean J. Zipser
(949) 679-0052- [email protected]
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
Umberg/Zipser LLP (U/Z) Honored as one of The Civic 50 Orange County by OneOC and Points of Light
Umberg/Zipser LLP (U/Z) is proud to announce that we have once again been honored as one of The Civic 50 Orange County by OneOC and Points of Light. This prestigious recognition celebrates U/Z as one of the 50 most community-minded firms in Orange County for 2023. The Civic 50 OC annual assessment sets the gold standard for civic engagement, providing a blueprint for companies dedicated
Multiple Umberg/Zipser LLP Attorneys Again Recognized by Best Lawyers in America® 2024
Umberg/Zipser LLP (U/Z), a premier business litigation and intellectual property law firm located in Irvine, California, once again has multiple attorneys who have been recognized by Best Lawyers in America® 2024. Firm attorneys Mark Finkelstein, Scott Garner, Phillip Kaplan, Carole Reagan, Todd Smith, Adina Stowell, Mei Tsang, Thomas Umberg, Vikki L. Vander Woude, and Dean Zipser have all been selected for inclusion in the 2024
Umberg/Zipser LLP Named One of Orange County’s “2023 Best Places to Work” By Orange County Business Journal
IRVINE, Calif. – July 5, 2023 – Umberg/Zipser LLP, a premier business litigation and intellectual property law firm, has again been named one of the Best Places to Work in Orange County by the Orange County Business Journal (OCBJ). The awards program was created in 2009, and it is a project of the OCBJ in partnership with Workforce Research Group. This county-wide survey and
Umberg/Zipser LLP Promotes Molly Magnuson as Newest Partner
Umberg/Zipser LLP (U/Z), a premier business litigation and intellectual property law firm located in Irvine, California, is pleased to announce that Molly Magnuson has been promoted to partner. Molly Magnuson has become an integral member of U/Z’s litigation team, consistently demonstrating exceptional legal expertise, professionalism, and dedication to client service. Molly’s promotion to partner reflects her outstanding contributions and commitment to the firm’s success.
Umberg/Zipser LLP Again Sponsors OCBA Charitable Fund’s Annual Golf Tournament
Umberg/Zipser LLP (U/Z) was once again proud to be a sponsor of the Orange County Bar Association Charitable Fund’s Annual Golf Tournament (OCBACF). Partners Dean Zipser and Mark Finkelstein played in the firm’s foursome this year, and were joined by partner and current OCBA Treasurer, Mei Tsang, at the ceremony following the round. U/Z is proud to be a longstanding supporter of the OCBA and its Charitable Fund. For example, both Dean Zipser and partner Scott Garner have
Priti Phukan, Ph.D. Promoted to Partner
Umberg/Zipser LLP (U/Z), a premier business litigation and intellectual property law firm located in Irvine, California, is pleased to announce that Priti Phukan has been promoted to partner. Priti is a member of the U/Z’s Intellectual Property (IP) Practice Group and her areas of legal expertise include intellectual property law, patent prosecution and counseling, patent portfolio development, and domestic and foreign IP practices. Priti
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.
CAREERS
At Umberg/Zipser LLP, it’s the quality of our people that makes our firm and work environment rewarding and unique. We are proud to have been recognized by our team as one of Orange County’s “2022 Best Places to Work.”
If you are an exceptional attorney, who thrives on delivering top-notch client service, and enjoys practicing law in a strong team culture, we invite you to contact us to learn more about how we can support your career growth.
Umberg/Zipser is also proud to have created a work environment that promotes and honors diversity and we are an equal opportunity employer. We look forward to hearing from you soon.