David Marroso

O'Melveny & Myers LLP

David Marroso is a trial lawyer who represents clients across industries—from entertainment to real estate, from sports to agriculture; from technology to hospitality; and many in between. He has litigation and trial experience across legal disciplines, including antitrust, contract, copyright and trademark, corporate investigations, defamation, environmental, ERISA, insurance, interference, labor and employment, profit participation and royalty disputes, international tax, and white collar criminal defense.

Based on the breadth of his experience and clients, the 2018 edition of Chambers USA recognized David as a leading lawyer for Commercial Litigation in California.


  • Entertainment and Media:
    • Global Music Rights, the first new music performance rights organization in 80 years, in precedent-setting antitrust litigation against the Radio Music Licensing Committee and copyright infringement matters
    • The Walt Disney Company in profit participation, First Amendment and defamation disputes
    • Movie theater giant AMC Entertainment in a $200 million lawsuit concerning the technology behind buying movie tickets online
    • The Hollywood Foreign Press Association in trial and appeal concerning the production and distribution rights to the Golden Globes
    • Miramax Films in a royalty and accounting dispute involving a portfolio of popular motion pictures
    • Motown Records and founder Berry Gordy in successful malicious prosecution and royalty dispute lawsuit against former Motown songwriters and producers
    • Rimrock Capital in connection with accounting and royalty disputes
    • Sony Pictures in a credit and rights dispute concerning the movie “Spider-Man”
    • Colorado detective and author Steve Thomas in a libel lawsuit brought by the family of JonBenet Ramsey
    • TOKYOPOP, Inc., one of the world’s top producers of anime, in successful arbitration against primary distributor for breach of contract and fraud
    • Italian moviemaker Vittorio Cecchi Gori in a high-profile “palimony” case
    • The Weinstein Company on various disputes concerning economics and credit rights to popular films
  • Sports:
    • Boxing promoter Top Rank, Inc. in broadcast, site, and co-promotional agreements and disputes ranging from breach of contract to defamation to copyright, as well as a precedent-setting class action involving the 2015 “Fight of the Century” between Manny Pacquiao and Floyd Mayweather
    • Numerous boxers and mixed martial artists, including Manny Pacquiao, Antonio “the Tijuana Tornado” Margarito, Miguel Angel Cotto, and Timothy “Desert Storm” Bradley in contract and regulatory matters before State Athletic Commissions
    • Obtained dismissal in favor of the famed Madison Square Garden in a highly-publicized lawsuit brought by a boxer who was severely injured while participating in about at “The Garden”
  • Intellectual Property :
    • Fortune 500 land development company, Lennar Corp. in a trademark trial in federal court in Seattle
    • ABC, Inc., in a first-of-its-kind copyright class action involving the use of music on daytime television
    • International apparel juggernaut Guess? Inc. in multiple trademark matters, including as trial lawyer in a federal trademark lawsuit in the Southern District of New York brought by Gucci and in an arbitration against former licensees of the “Baby Guess” line
    • Chinese manufacturing giant Midea in intellectual property and breach of contract dispute against a domestic distributor of products
  • Commercial:
    • Global agricultural giant, Agrium, Inc. in a $100+ million breach of contract and interference lawsuit involving “organic” fertilizer
    • Colony Capital and portfolio companies in matters ranging from a tax investigation in Sardinia to ERISA claims related to sale of an investment in a gaming property
  • Environmental:
    • Lennar Corp. in high-profile regulatory, litigation, and environmental matters concerning the development of the former Naval Base at Hunters Point in Northern California
    • ACE Insurance in separate coverage matters originating from environmental contamination at California sites
  • Real Estate:
    • Lennar Corp. in multiple matters including winning a $1 billion jury verdict in Florida, a complete defense of two separate $200 million lawsuits in California, and in a $250 million land acquisition dispute in Maryland
  • Employment:
    • Represent several national employers in labor and employment class actions
    • Lead lawyer in internal investigations concerning allegations of executive misconduct


  • California
  • US Supreme Court
  • US Court of Appeal, Ninth and Fifth Circuits
  • US District Court, Northern, Eastern, Central, and Southern Districts of California


  • Harvard Law School, J.D., 2000: magna cum laude
  • University of Nevada at Reno, B.S., Criminal Justice, 1996: magna cum laude


  • Honorable Stephen S. Trott, US Court of Appeals, Ninth Circuit


Rate : $$$

What types of cases Attorney David Marroso & O'Melveny & Myers LLP can handle?
O'Melveny & Myers LLP can handle cases related to laws concerning Copyright Application, Tax, Litigation, Entertainment, White Collar Crime, International Law, Trademark infringement. We manually verify each attorney’s practice areas before approving their profiles and reviews on our website.
Where is O'Melveny & Myers LLP located?
O'Melveny & Myers LLP is located at SunAmerica Center, 1999 Avenue of the Stars #8th+floor, Los Angeles, CA 90067, USA. You can reach out to O'Melveny & Myers LLP using their phone line 310-246-8469. You can also check their website omm.com or email them at [email protected].
How much would it cost to hire O'Melveny & Myers LLP?
David Marroso lawyer charges are specific to each case. However, they work with contingency fees and its ranges from $$ to $$$. They also provide free consultation [and no obligation quotes] if you are interested to hire.
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O'Melveny & Myers LLP
Avenue of the Stars 1999
Los Angeles 90067 CA US
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