Professionals

We never lose sight of our clients' objectives, and we work creatively to achieve them.
~ Dean Zipser

Brent S. Colasurdo

(949) 679-0052
[email protected]

Brent S. Colasurdo is an associate with Umberg/Zipser where he focuses his practice on complex commercial litigation.

Ryan S. Dean

(949) 679-0052
[email protected]

Ryan specializes in global patent and trademark prosecution for clients of all sizes, and focuses primarily in the areas of mechanical and aerospace engineering

Halim Dhanidina

(949) 679-0052
[email protected]

Halim practices in U/Z’s trial practice group after retiring as an appellate court justice with Division Three of the California Court of Appeal, Second Appellate District in LA.

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]

Martin has almost two decades of experience in domestic and International patent prosecution, working in the fields of biochemistry and molecular biology, bioinformatics, medical devices, organic chemistry, and general mechanical arts.

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.

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.

Priti Phukan, Ph.D.

(949) 679-0052
[email protected]

Priti Phukan concentrates her practice on patent and trademark prosecution across various technology industries, including chemistry, life sciences, diagnostics, medical devices, and mechanical engineering.

Carole E. Reagan

(949) 679-0052
[email protected]

Carole E. Reagan’s practice focuses on intellectual property and complex commercial litigation. She has successfully represented business clients across a diverse array of industries.

Todd W. Smith

(949) 679-0052
[email protected]

Todd Smith’s practice focuses on complex business litigation in state and federal courts representing companies and individuals in partnership disputes, shareholder and derivative litigation, real estate disputes, trade secrets, and unfair competition claims.

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.

Jason Tejani

[email protected]

Jason Tejani concentrates his practice on patent prosecution and intellectual property (IP) transactional matters. Prior to his legal career, he was a chemist at a global chemical company.

Mei Tsang

(949) 679-0052
[email protected]

Mei has an international intellectual property practice focused on helping clients formulate their IP strategy, and shepherding their IP through various business cycles to achieve their business goals worldwide.

Thomas J. Umberg

(949) 679-0052
[email protected]

Thomas J. Umberg has extensive trial experience in both federal and state courts and has been selected as a “Best Lawyer” for the prestigious publication “The Best Lawyers in America®” in commercial litigation for 12 consecutive years.

Vikki L. Vander Woude

(949) 679-0052
[email protected]

Vikki has a broad and diverse professional background having worked in large and small law firms, as in-house counsel, and as a research attorney for the courts, which gives her a unique perspective and skill set that is of immeasurable benefit to clients.

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.