Mark A. Finkelstein

Commercial Litigation

0.0 (0 reviews)

Irvine, California

31+ years experience

Umberg Zipser LLP

Updated: Dec 25, 2025

Contact Information

949-679-0052

https://umbergzipser.com/professionals/mark-finkelstein/

1920 Main Street, Suite 750, Irvine, CA 92614

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Bio

Mark Finkelstein is a partner at Umberg Zipser LLP with more than 23 years of intellectual property and complex litigation experience. He advises clients on matters involving patent, copyright, trademark, and trade dress infringement, as well as misuse of trade secrets, unfair competition, and other commercial disputes. Mark has significant first-chair trial experience in both state and federal courts, and has argued before the Federal and Ninth Circuits.Mark has been recognized for intellectual property litigation by Best Lawyers in America and Southern California Super Lawyers. Further, Legal 500 and World Trademark Review have recommended Mark for trademark litigation, with World Trademark Review calling Mark “a bright, experienced litigator” with an “imposing courtroom presence” and “extensive first-chair trial experience before the federal courts,” adding that he is “one of the smartest guys you would probably ever meet.”Mark is the immediate past president of the Association of Business Trial Lawyers (ABTL) Orange County and is a Lawyer Representative to the Ninth Circuit Judicial Conference. Mark has written articles on patent reform, cybersquatting, and trade dress infringement and has spoken on intellectual property protection, patent infringement, and electronic discovery. He has been a member of the American and Orange County Bar Associations, the American Intellectual Property Law Association, and the Orange County Intellectual Property Law Association.

Practice Areas

Commercial Litigation

Awards & Recognition

Lawyer of the Year: Litigation - Patent, Orange County (2023)
Lawyer of the Year: Trademark Law, Orange County (2023)
Lawyer of the Year: Trademark Law, Orange County (2021)
Recognized: Commercial Litigation
Recognized: Litigation - Intellectual Property
Recognized: Litigation - Patent
Recognized: Trademark Law
Practice Area: Advertising Law
Special Focus: False Advertising
Best Lawyers in America (2016-2019) for intellectual property litigation and patent litigation
Legal 500 U.S. (2007): leading trademark litigation attorney
Southern California Super Lawyers (2009-2013, 2015-2018) and Southern California Rising Stars (2004-2007) for IP litigation
World Trademark Review “recommended expert” (2011-2012, 2014-2018): “a bright, experienced litigator” with an “imposing courtroom presence” and “extensive first-chair trial experience before the federal court