Experience, Integrity, Results

About Us

Exceptional client service . . . delivered efficiently

Umberg Zipser LLP is a premier business litigation boutique.  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, Umberg Zipser provides clients with unparalleled legal services.

The firm’s lawyers are recognized as among the very best in their practice areas.  They 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.

We pursue our clients’ objectives strategically and with maximum efficiency and flexibility across a wide array of practice areas, including intellectual property, class actions, unfair competition, environmental, real estate, and other complex business litigation, as well as white collar criminal defense.



Three U/Z Partners Once Again Selected for Inclusion in “Best Lawyers in America”

Orange County’s Umberg Zipser LLP is pleased to announce that partners Carole Reagan, Tom Umberg

August 17, 2015 󰀄
Passing the Torch at Constitutional Rights Foundation, Orange County

U/Z’s Adina Stowell recently ended her term as President of the Board of Directors Constitutional

U/Z’s Zipser Contributes to Advice for New Lawyers from the OC Bar’s “Masters Division”

The June issue of OC Lawyer included a segment, “Professional Practice Makes Perfect (Advice from

Dean Zipser Co-Authors Article for OC Lawyer on Starting a New Law Firm

UZ’s Dean Zipser collaborated with Lei Lei Wang Ekvall on an article that appears in

June 19, 2015 󰀄
U/Z’s Zipser and His Mentoring Efforts Featured in OC Lawyer

Orange County Bar Association President Ashleigh Aitken recognized UZ’s Dean Zipser and his role in

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