David A. Sergenian

Co-Founding Partner

Contact Information

(323) 318-7771, ext. 101
1055 West Seventh Street, 33rd Floor
Los Angeles, CA 90017


J.D., University of Virginia School of Law, 2003
M.A. (Philosophy & Literature), New York University, 2000
B.A. (Liberal Arts), New School University, 1999


State Bar of California
U.S. Court of Appeals for the Federal Circuit
U.S. District Court for the Central District of California




David A. Sergenian is a co-founding partner of Sergenian Ashby LLP. His practice concentrates in the areas of copyright, trademarks, trade secrets, partnership and startup disputes, appellate practice, and general commercial litigation. In addition, he has extensive experience in patent law, securities litigation, entertainment litigation, and employment actions. He has represented clients on “both sides of the v.,” including numerous Fortune 500 companies, in litigations, trials, arbitrations, and alternative dispute resolutions.

Prior to co-founding Sergenian Ashby LLP, David was an attorney at the law firms of Glaser Weil Fink Howard Avchen & Shapiro LLP; Quinn Emanuel Urquhart & Sullivan LLP; and Gradstein, Luskin & Van Dalsem. Before entering law school, he worked as a film and video editor in feature films, documentaries, and television. He currently serves as outside General Counsel to The French Conservatory of Music in Beverly Hills.

Select Representative Matters

Represented a film production company and major film studio in a lawsuit against a game manufacturer and its parent company concerning intellectual property rights in film, television, and other media. Following a bench trial in the Central District of California, the case settled before a decision issued.

Represented a prominent real estate developer 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 a Los Angeles-based investment management firm in a six-week trial against an executive and his colleagues who, the jury found, misappropriated the firm’s trade secrets and breached their fiduciary duties to the company. The case settled before the Court assessed damages on the firm’s trade secrets claim.

Represented plaintiff, a well-known actress, in a jury trial against the estate of her former husband, a renowned musician, in a trial on plaintiff’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. The verdict was upheld on appeal.

Represented a Fortune 500 broadcasting company against patent infringement claims by a patent-licensing company 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 all the patents-at-issue.

Represented a Fortune-500 broadcasting company against patent infringement claims by a purported inventor. Obtained a complete defense judgment in favor of client 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.

Represented a major real estate investment firm in a dispute against a real estate developer regarding 14 large commercial real estate properties in Southern California and Arizona. The case settled immediately prior to trial.

Represented a utility company against a claim of sexual harassment and discrimination brought by a disgruntled former employee. The case settled on highly favorable terms days before trial was set to begin.

Represented an internet startup company in an ongoing trade-secrets dispute against a major corporation and its employees.

Represented a whistleblower in an ongoing dispute against one of the largest social media companies, involving allegations of securities law violations.

Represented a television production company against a major television broadcasting channel in an idea submission case. The matter was settled favorably in mediation.

Currently representing a plaintiff in an action against his former partner and certain transferee entities over the proceeds of the partnership’s real estate investments.

Blog Posts by David A. Sergenian


1055 West Seventh Street, 33rd Floor
Los Angeles, California 90017