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.



Garner in OC Lawyer: “Civility Among Lawyers: Nice Guys Don’t Have to Finish Last”

“ScottU/Z’s Scott Garner, recently named Co-Chair of the OCBA Civility Task Force, contributed an article to the March 2016 issue of Orange County Lawyer: “Civility Among Lawyers: Nice Guys Don’t Have to Finish Last.” Scott points out in the opening paragraphs of the piece,”Clients rightfully expect their lawyers to engage in zealous advocacy. Too many lawyers, however, confuse zealous advocacy with incivility. . . . . A lawyer can be tough and aggressive, and still not be obnoxious and rude. Civility does not suggest weakness or a lack of zealous representation. As the ABA Model Rules (which have been adopted in varying forms in nearly all jurisdictions, albeit not in California) point out, ‘A lawyer’s duty to act with reasonable diligence does not require the use of offensive tactics or preclude the treating of all persons involved in the legal process with courtesy and respect.'”

March 5, 2016 󰀄
Umberg Writes on “California Lawyers: Improving the Rule of Law in Afghanistan”

“TomU/Z’s Tom Umberg co-authored a recent article in The California International Law Journal, “California Lawyers: Improving the Rule of Law in Afghanistan.” (Vol. 23, No. 2, Winter 2015, p. 23-25) Tom is Co-Chair of the Partnership for Justice Reform in Afghanistan. In 2009-2010, he was recalled to active duty in the U.S. Army to serve as Chief, Anti-Corruption for the NATO Training Mission–Afghanistan. His co-author Fatima Murchal is a 2015 L.LM graduate of the Chapman University, Fowler School of Law in International and Comparative Law and is currently Project Coordinator and Legal Analyst for the Max Planck Foundation for International Peace and the Rule of Law in Kabul, Afghanistan.

March 4, 2016 󰀄
Zipser Speaks at ABA Midyear Meeting

U/Z’s Dean Zipser was a panelist at the Metropolitan Bar Caucus workshop on the “Graying of the Profession” at the recent meeting of the National Conference of Bar Presidents to be held in San Diego on February 5, 2016 as part of ABA Midyear Conference. Dean is a former President of the Orange County Bar Association and former Chair of its Masters Division – a division of the OCBA formed to serve the unique abilities, needs, and agenda of practitioners with 25 years or more tenure in the practice of law. Further details about the workshop are on the Midyear Meeting website.

March 1, 2016 󰀄
U/Z is a Proud Supporter of OCBA’s “Fairway Philanthropy”

“OrangeThe March issue of Orange County Lawyer features a cover story, “Fairway Philanthropy,” that highlights the Orange County Bar Association Charitable Fund’s 32nd Annual Judge Kenneth Lae Charity Golf Scramble which will be held on March 31, 2016. Dean Zipser, who has been a Charitable Fund Golf Committee member for many years, is pictured on the cover of the March issue along with his fellow committee members. According to the article, “Thanks to the funds raised during both last year’s golf scramble and Raise Your Glass III, a wine tasting and charity awards benefit held at Big Canyon Country Club in Newport Beach this past fall, the OCBA Charitable Fund is pleased to announce 2016 grants totaling $170,000 (a new record!) to benefit twelve worthy and diverse causes.”

February 29, 2016 󰀄
Zipser Praises New OC Bar President

“ToddU/Z’s Dean Zipser, a former president of the Orange County Bar Association who has remained very active in the OCBA, had kind words to say about incoming OCBA president Todd Friedland in two recent articles. In a Daily Journal article on January 21, 2015, Dean commented on Todd and his plans for his term as OCBA president, noting, “Todd is universally well liked, well respected, and well connected. He’s the kind of guy who has a lot of ideas, but he’s a good listener with an open mind. That’s a really important quality in a bar president.” In a lighter vein, Dean co-authored an article in the January issue of Orange County Lawyer entitled “Six Degrees of Todd Friedland” in collaboration with Tiffanny Brosnan, John Stephens, and Mei Tsang. When asked “What do you think Todd’s presidency will bring to the OCBA?”, Dean responded: “Catered dinners and hip-hop music at all OCBA events? Seriously, based on our many discussions, I know that Todd has been thinking ahead and already has some great ideas for our Bar Association—and that’s not counting those he may get from his “Hey Todd” campaign. Todd is singularly focused on making the OCBA better and I have no doubt he will do so.” The entire article is available here.

February 1, 2016 󰀄

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