David Sergenian

C: (213) 435-2035

"It is not because things are difficult that we do not dare,
it is because we do not dare that things are difficult."


David Sergenian

David Sergenian is a Partner and Co-Founder of Pierce Sergenian LLP. He brings years of experience representing a diverse array of individuals, organizations, and corporations, ranging from high-net-worth individuals and executives to film and television producers, actors, writers, music producers, to hedge funds, banks, brokerage companies, asset management firms, entrepreneurs, inventors, and manufacturers, to municipal and governmental agencies. He enjoys combining strategy, tenacity, and efficiency to best meet his clients’ litigation objectives.

Mr. Sergenian received his J.D. from the University of Virginia School of Law, where he was one half of the winning team of the two-year, six-round William Minor Lile Moot Court Competition. He also served on the Editorial Board of the Virginia Journal of Law and Technology.

Mr. Sergenian brings to Pierce Sergenian LLP a wealth of experience in diverse areas of commercial law, including securities litigation, antitrust, partnership disputes, real estate disputes, insurance matters, white collar crime, class actions, fraud claims, contract disputes, and unfair competition/false advertising. He also has extensive experience with appeals.

In addition, Mr. Sergenian has deep experience in all manner of intellectual property cases, including patent, copyright, trademark, trade secrets, idea submission, and rights of publicity and privacy cases. He has successfully represented numerous clients in patent litigation, on both the plaintiff and defense side, including automobile manufacturers, inventors/entrepreneurs, and a major satellite television company in the largest multi-district patent litigation in history.

Mr. Sergenian began his career with the boutique law firm of Gradstein, Luskin & Van Dalsem, which specialized in high-stakes business contingency cases. There, he gained hands-on experience early on, second-chairing a trial in his second year of practice, in which he helped secure a victory for the plaintiff, after a jury deliberation of 90 minutes. He then joined litigation juggernaut Quinn Emanuel Urquhart & Sullivan LLP, and subsequently the litigation powerhouse Glaser Weil Fink Howard Avchen & Shapiro LLP, where he secured victories on behalf of plaintiffs and defendants through trials, arbitrations, and decisive summary judgment wins.



Represented Sweetpea Entertainment in case brought by Hasbro, Inc., alleging copyright infringement and trademark violations relating to film rights to Dungeons & Dragons intellectual property. The case was settled following a bench trial in the Central District of California, prior to a decision being issued.

Represented plaintiff Merlone Geier Partners in a dispute against a real estate developer regarding 14 large large commercial real estate properties in Southern California and Arizona. The case settled immediately prior to trial.

Represented Navitas Utility Corporation against a claim of sexual harassment and discrimination brought by a disgruntled former employee. The case settled on highly favorable terms prior to trial.

Represented Trust Company of the West against former portfolio manager Jeffrey Gundlach and his new company DoubleLine Capital. After a two month trial in Los Angeles, Quinn Emanuel obtained a jury verdict finding in favor of TCW on its claims for theft of trade secrets, breach of fiduciary duty and tortious interference with contractual relations. The jury also rejected Gundlach’s oral contract claim for nearly half a billion dollars.

Represented real estate developer Donald Bren in a jury trial in which the plaintiffs sought hundreds of millions of dollars in child support. The jury returned a complete defense verdict after 90 minutes of deliberation. The verdict was upheld on appeal before the California Court of Appeal.

Represented DIRECTV against patent infringement claims by Ronald A. Katz Technology Licensing LP, in the largest multi-district litigation patent case in history. The parties reached a settlement after several rounds of summary judgment rulings and reexamination proceedings before the U.S. Patent & Trademark Office that invalidated the patents-at-issue.

Represented plaintiff, actress Evelyn Keyes, in a jury trial against the estate of her former husband, jazz clarinetist Artie Shaw, in a trial on Keyes's claim for breach of a contract to make a will. After 90 minutes of deliberation, the jury returned a verdict awarding the full amount of damages claimed.

Represented DIRECTV against patent infringement claims by Phoenix Solutions. Obtained a complete defense judgment in favor of DIRECTV as a result of a summary judgment ruling finding of no infringement of any patent claims at issue, which was affirmed on appeal to the Federal Circuit.