Legal Expertise

Aaron Moss is a partner in MSK’s Entertainment, Intellectual Property, and Litigation practice groups, where he represents the owners and users of creative content in copyright, trademark, right of publicity, idea submission, and contractual disputes. He has also successfully argued high-stakes First Amendment cases before district and appellate courts nationwide, defending media clients against defamation, invasion of privacy, and other attempts to restrain speech.

A nationally recognized expert in copyright law, Aaron is the publisher, editor, and author of Copyright Lately, a widely read legal blog selected by the U.S. Library of Congress for inclusion in its archive of authoritative and culturally significant websites. His analysis has been cited by courts, legal scholars, and major media organizations. Aaron is also a frequent speaker at conferences and events hosted by the Copyright Society, the American Bar Association, the Media Law Resource Center, and leading law schools.

In addition to his litigation practice, Aaron advises clients on intellectual property acquisitions and transfers, copyright termination and reversion, and emerging legal issues surrounding artificial intelligence. He also conducts complex chain-of-title analyses and provides pre-publication clearance reviews, helping clients navigate legal risks and avoid costly lawsuits.

Aaron’s clients include major film and television studios, independent production companies, digital media platforms, and video game publishers. He also represents designers, entrepreneurs, and advertising and creative services agencies, as well as manufacturers and licensors of toys, apparel, and consumer products. Additionally, Aaron provides strategic guidance to retailers and e-commerce businesses on intellectual property and commercial issues, with particular expertise in secondary market transactions.

Widely recognized as one of the preeminent intellectual property litigators in his field, Aaron has been repeatedly named to The Hollywood Reporter’s “Top 100 Power Lawyers” list, Variety’s “Legal Impact Report,” and the Daily Journal’s “Top Intellectual Property Lawyers.” He is also ranked by Chambers USA as a leading lawyer in media and entertainment litigation and was recently named “Lawyer of the Year” by Best Lawyers for his work in both First Amendment and Intellectual Property law.

Before joining MSK, Aaron was a partner at Greenberg Glusker in Los Angeles, where he chaired its litigation department for over twelve years.

Representative Matters

Copyright, Trademark, and Other Intellectual Property 

• Currently representing Warner Bros. Discovery in a trademark infringement matter involving the HGTV television series Ugliest House in America. Among other issues, the case involves the application of the U.S. Supreme Court’s 2023 decision in Jack Daniel’s v. VIP Products and whether WBD’s use of the phrase “ugliest house” in the title of an expressive work is protected by the First Amendment.
• Regularly advises entertainment company Blumhouse Productions on a variety of copyright matters, including complex chain of title issues and rights analyses. 
• Regularly represents leading video game publisher Riot Games, Inc. in a wide range of matters, including copyright and trademark cases, contractual disputes, and efforts to monitor and remove infringing content across internet and social media platforms.
• Regularly advises Fox Corporation and its broadcasting, entertainment, and digital media affiliates on a variety of copyright and contractual issues.
• Successfully defended Ironmace Co., Ltd., developer of the popular video game Dark and Darker, against copyright infringement claims brought by its much larger competitor Nexon Korea Corp. In an issue of first impression, the Ninth Circuit Court of Appeals affirmed the district court’s dismissal of the case, holding that the Digital Millennium Copyright Act (DMCA) does not foreclose forum non conveniens challenges to venue.*
• Obtained a pleading-stage dismissal with prejudice on behalf of NBCUniversal, Jerry Seinfeld and Stacey Snider in a copyright infringement lawsuit filed by a writer who alleged that the 2007 film Bee Movie infringed his copyright in an unproduced screenplay of the same name.*
• Advised the owner of intellectual property rights in the works of science fiction writer Ray Bradbury (Fahrenheit 451, The Martin Chronicles) in connection with contractual and copyright issues arising out of the exploitation of those rights.*
• Represents the estate of Rod Serling in connection with intellectual property matters involving works by the famed creator of The Twilight Zone.*
• Represented Discovery Communications, Lionsgate, and John Goldwyn in a lawsuit brought by Dana Brunetti involving implied contract and idea submission claims related to the television series Manhunt: Lone Wolf. Defended against broad claims seeking compensation for the concept of a recurring true-crime series, raising key issues of copyright preemption and the interplay between implied-in-fact contracts and written agreements.*
• Represented the Ray Charles Foundation, a philanthropic organization and the sole beneficiary of Charles’ estate, in a copyright termination matter brought against Charles’ children.*
• Defended NBCUniversal in a major copyright infringement matter concerning claims that Section 6, a preproduction screenplay, violated copyrights in the James Bond character and series of films.*
• Successfully represented the licensor of trademark rights in the popular YOGI TEA brand in several federal court lawsuits, Trademark Trial and Appeals Board (TTAB) opposition proceedings and a Federal Circuit.*
• Represented Toho , Ltd., owner of intellectual property rights in Godzilla, in numerous matters involving copyright and trademark infringement and licensing disputes; among many others, these cases have involved the unauthorized use of the Godzilla character in motion pictures and television commercials, the “sampling” of Godzilla theme music in sound recordings, and the infringement of Toho’s characters in connection with various internet ventures; all of these cases were resolved with the defendants ceasing their infringing conduct.*
• Defended and advised owners of such entertainment properties as “Lassie,” “Casper the Friendly Ghost,” “Winnie the Pooh,” and Charlotte’s Web in connection with attempts by authors’ heirs to recapture copyrights in these properties under the Copyright Act’s statutory termination provisions.*
• Represented DreamWorks Animation in numerous litigation and transactional matters involving rights to “Frosty the Snowman,” “Rudolph the Red-Nosed Reindeer,” “Richie Rich,” “The Lone Ranger,” and other iconic properties.*
• Prevailed on behalf of Costco Wholesale Corporation in a major copyright case of first impression, Omega v. Costco, including in the United States Supreme Court, defending Costco against claims that the retailer infringed Omega’s copyright by acquiring genuine watches imported from abroad without Omega’s consent and selling them for more than one-third less than Omega’s regular retail price.*
• Defended Ubisoft Entertainment, one of the world’s largest video game publishers, against copyright infringement claims brought by author who alleged that Ubisoft’s Assassin’s Creed video game series infringed his novel, resulting in dismissal of case at the pleading stage.*
• In a widely-publicized infringement action, part of the litigation team that successfully defeated a preliminary injunction motion seeking to prevent the release of DreamWorks’ motion picture Amistad.*
• Obtained a preliminary injunction for toy manufacturer Mattel, against a producer of dolls that infringed the “Barbie” and “American Girl” lines.*
• Obtained a permanent injunction on behalf of Leg Avenue, one of the world’s largest manufacturers of costumes, hosiery, and lingerie in a copyright and trademark infringement lawsuit against a competing seller.*
• Represented the Estate of J.R.R. Tolkien in connection with rights issues arising out of The Hobbit motion picture and other intellectual property matters.*
• Represented Marvel, owner of the copyrights in Spider-Man, Iron Man and numerous other iconic characters in various matters involving intellectual property disputes, profit participation rights, and general litigation.*
• Represented Gameloft, S.A., one of the world’s largest publishers of mobile phone video games, in numerous IP matters, including a copyright and trademark dispute brought by Activision in connection with the video game Guitar Hero.*

Media and First Amendment

• Prevailed before the Second Circuit Court of Appeals in a high-profile case alleging that client Barstool Sports, Inc. made defamatory statements about actor Michael Rapaport on social media and online diss tracks; successfully argued that the court was required to take the overall context of the communications into account in deciding whether trash-talking insults could be interpreted as statements of fact.*
• Prevailed on an anti-SLAPP motion to defeat a defamation claim filed against Scripps Networks, an affiliate of Discovery Communications, over on-air statements made by the star of the popular HGTV reality program Windy City Rehab.*
• Successfully argued before the Massachusetts Supreme Judicial Court (the highest court in the state) to affirm the dismissal of a civil wiretapping lawsuit brought by the Mayor of Somerville, Massachusetts, Joseph Curtatone, against clients Barstool Sports, Inc. and Barstool personality Kirk Minihane. Persuaded the seven judge panel that the wiretapping statute was not violated where Minihane obtained an interview with the mayor by pretending to be a reporter from the Boston Globe, because the recording of Curtatone was not made in secret.*
• Successfully defended Discovery Communications against a lawsuit seeking to prevent the network from broadcasting The Lost Lincoln, a documentary concerning a previously undiscovered photograph taken of the president after he was shot in 1866. After Discovery demonstrated that enjoining the documentary would constitute an unconstitutional “prior restraint” in violation of the First Amendment, the court denied the plaintiffs’ application for a temporary restraining order, allowing the program to be aired.*
• Successfully defended Univision Communications in a case brought by Jenni Rivera Enterprises, owner of Jenni Rivera’s intellectual property rights, arising out of Univision’s publication of allegedly confidential information in a 26-episode series about the late singer. Univision appealed following the trial court’s denial of its anti-SLAPP motion. In a published opinion, the California Court of Appeals reversed, holding that the First Amendment provided a complete defense.*
• Obtained summary judgment on behalf of Discovery Communications in connection with an action brought by former talent for one of the network’s unscripted shows, claiming that Discovery was liable for allegedly defamatory Facebook postings.*

General Entertainment Industry Disputes

• Obtained complete defense in three related proceedings on behalf of writer-director Rian Johnson (Knives Out, Star Wars: Episode VIII–The Last Jedi) in a commission dispute with a former agent arising under California’s Talent Agencies Act.*
• Successfully represented NBCUniversal/DreamWorks Animation in recovering 7.4 million units of home video inventory wrongfully held by its former distributor, Our Alchemy, in violation of the parties’ license agreement.*
• Obtained reversal of an adverse arbitration ruling for Classic Media, LLC, one of the world’s largest owners and distributors of classic children’s and family content, in a dispute involving rights to a well-known television series; after prevailing on appeal, the client ultimately received $6,000,000 for its rights.*
• Successfully defended Brillstein-Grey Entertainment in a contractual dispute over alleged producing partnership.*

Advertising and Unfair Competition 

• Obtained Ninth Circuit affirmance of summary judgment victory on behalf of retailer Costco Wholesale Corporation in a putative class action lawsuit alleging false advertising, unfair competition and related claims in connection with Costco’s advertising and sale of Apple AirPods.*
• Represented Sugar Foods, a multinational food products company, in obtaining dismissal at the pleading stage of a federal consumer class action complaint alleging false advertising and unfair competition claims.*
• Defended Health Communications, Inc., the original publisher of the bestselling Chicken Soup for the Soul series in an unfair competition and trademark infringement action brought by the books’ co-authors.*
• Represented Riot Games, Inc., a video game developer best known for the enormously popular game and Esports game “League of Legends,” in federal litigation against a company trafficking in stolen user accounts and infringing Riot’s intellectual property. Obtained a permanent injunction shutting down the defendant and preventing its founder from engaging in future misuse of Riot’s property.*

Right of Publicity 

• Represented Dustin Hoffman in a landmark right of publicity suit against a magazine that published an unauthorized computer-generated image of the actor.*
• Achieved favorable settlements on behalf of Tom Cruise and Nicole Kidman when their names and likenesses were used without permission by cosmetics company Sephora.*
• Represented Tom Skerritt against the manufacturer of a dietary supplement that used a photograph of the actor in an unauthorized advertisement.*
• Represented R&B group Bloodstone when its members’ voices were used without permission in a beer commercial.*

*Indicates matters handled prior to joining MSK.

Honors & Awards

• "Legal Impact Report," Variety (2014, 2019, 2022, 2024) 
• "Top 100 Power Lawyers," The Hollywood Reporter (2014-2015, 2017, 2019-2021) 
• "Top Intellectual Property Lawyers," The Daily Journal (2009, 2011-2015, 2020-2024) 
• "Leading Lawyer in Media & Entertainment Litigation," Chambers USA (2019-2024) 
• Recognized by Best Lawyers in America® in the fields of:
  • Litigation - First Amendment (2019-2025)
    • "Lawyer of the Year" (2021, 2025)
  • Litigation - Intellectual Property (2025)
    • "Lawyer of the Year" (2025)
  • Media Law (2018-2025)
• "Top 5% of Lawyers in Southern California," Southern California Super Lawyers (2004-2025)
• "Who’s Who in L.A. Law: Angelenos to Know in Intellectual Property Law," Los Angeles Business Journal (2012) 
• "Top 20 Under 40," The Daily Journal (2011) 

Professional, Business and civic Affiliations

• Past President, Los Angeles Copyright Society 

Other Career Experience

• Partner, Greenberg Glusker LLP