False endorsement claims under the Lanham Act are federal civil lawsuits, brought under Section 43(a) of the statute (15 U.S.C. § 1125(a)), that let a person sue when their name, face, voice, or other identifying feature is used in commercial advertising in a way likely to make consumers believe they sponsored or approved a product they never actually endorsed.1Office of the Law Revision Counsel. 15 USC 1125 – False Designations of Origin, False Descriptions, and Dilution Forbidden The claim protects both the individual whose identity was exploited and the public’s interest in not being deceived about who stands behind a brand.
What You Have to Prove
Three elements carry a false endorsement case.
The defendant used an identifying feature in connection with goods or services in commerce. Section 43(a) covers any “word, term, name, symbol, or device” that functions as an identifier, and courts read that language broadly enough to include photographs, distinctive voices, and recognizable catchphrases.1Office of the Law Revision Counsel. 15 USC 1125 – False Designations of Origin, False Descriptions, and Dilution Forbidden
The use is likely to confuse consumers about affiliation, connection, or approval. This is the heart of every false endorsement case. It doesn’t matter whether the packaging says “endorsed by.” What matters is whether a reasonable consumer encountering the ad would walk away thinking the person had agreed to promote the product.
The plaintiff is likely to be damaged. For public figures whose identities carry commercial value, this element is usually straightforward: unauthorized use dilutes their control over endorsement deals and can damage their reputation when the product is one they would never willingly associate with.
How Courts Decide Likelihood of Confusion
Most false endorsement cases turn on this question. Courts apply multi-factor tests that vary slightly by circuit, but the core considerations overlap.
The person’s fame is front and center. A household name attached to a product carries far more implied endorsement power than an obscure figure, so the more recognizable the plaintiff, the easier this element becomes.
Courts then compare the plaintiff’s actual persona to the way the defendant depicted them. This goes beyond real names and photographs. A look-alike actor styled to resemble the plaintiff, or a voice performer imitating a singer’s distinctive vocal style, can trigger liability when the clear goal is to make the audience think of the real person. The Ninth Circuit established in the Tom Waits sound-alike case that deliberately imitating a professional singer’s distinctive voice to sell a product constitutes false endorsement.
Other factors matter too: how similar the plaintiff’s usual market is to the defendant’s product, whether consumers were actually confused (helpful but not required), how much care a typical buyer exercises when purchasing the product, and whether the defendant intended to create a false association. Intent isn’t required. When a defendant deliberately engineers the resemblance, though, courts treat it as strong circumstantial evidence that confusion is likely.
What Counts as Commercial Use
Section 43(a) only reaches conduct “in connection with any goods or services” and, for the misrepresentation prong, in “commercial advertising or promotion.”1Office of the Law Revision Counsel. 15 USC 1125 – False Designations of Origin, False Descriptions, and Dilution Forbidden The unauthorized use has to serve a commercial purpose. Product packaging, television ads, promotional social media campaigns, and paid endorsement placements all qualify. A newspaper article that happens to include a celebrity’s photo to illustrate a news story does not, because the primary purpose is informing the public rather than selling a product.
The line gets genuinely tricky with social media influencer content. A sponsored post featuring someone’s likeness with affiliate links and discount codes looks commercial on its face. An independent blogger reviewing products, even one who earns affiliate revenue, may fall on the editorial side because the content’s primary function is informing consumers rather than proposing a transaction. Courts have had limited opportunity to draw this boundary under the Lanham Act, though the general consensus is that most paid influencer posts aimed at driving purchases satisfy the commercial advertising requirement. Some courts also require that the message be widely disseminated within the relevant industry, which can make claims harder to sustain against micro-influencers with small audiences.
Who Can Sue
Standing requires a commercial interest that the Lanham Act is meant to protect, or at least a reasonable interest that could be damaged by the false association. Celebrities typically clear this bar easily because their names and faces carry quantifiable market value. They license their identities for endorsement deals, and unauthorized use directly undercuts that market.
Non-celebrities can also bring claims, but they need to show their identity carries commercial weight in some recognizable sphere. A well-known surgeon whose photo is used to sell medical devices without permission, or a respected chef whose name appears on a restaurant they have no connection to, could demonstrate the kind of commercial interest the statute protects. The key question is whether the plaintiff’s identity functions as something consumers associate with quality or credibility in the relevant market.
Without that commercial connection, the Lanham Act isn’t the right vehicle. Individuals whose identity was used without consent but who lack commercial standing may find better options in state right-of-publicity statutes or privacy tort claims, which focus on unauthorized exploitation of identity rather than consumer confusion. Even plaintiffs with strong Lanham Act claims often file a parallel right-of-publicity claim, because a deepfake so obviously fake that no reasonable consumer would believe it might still succeed under state law where confusion isn’t required.
First Amendment Limits on the Claim
Not every unauthorized use of a person’s identity gives rise to a valid claim. The First Amendment protects artistic and expressive works, and courts have developed specific tests to keep trademark law from swallowing free speech.
The most important framework is the Rogers test, from the Second Circuit’s 1989 decision in Rogers v. Grimaldi. Under that test, the Lanham Act doesn’t apply to an artistic work unless the use of the person’s identity has no artistic relevance to the work whatsoever, or the use explicitly misleads consumers about endorsement or authorship. The artistic relevance bar is intentionally low; it only needs to be above zero. The “explicitly misleading” prong is harder for plaintiffs to clear, because most courts require something more than the mere presence of a name or likeness. The defendant typically needs to have made an overt statement or taken a concrete step to foster the false impression.
The Supreme Court narrowed Rogers in 2023 in Jack Daniel’s Properties, Inc. v. VIP Products LLC. When someone uses another’s mark as a designation of source for their own goods, essentially using a trademark as a trademark, Rogers doesn’t apply at all, and the standard likelihood-of-confusion analysis governs.2Supreme Court of the United States. Jack Daniels Properties Inc v VIP Products LLC In practice, the Rogers shield is strongest for creative works like films, songs, and books where someone’s identity appears as part of the artistic content, and weakest when a defendant puts a recognizable identity on merchandise or uses it as a brand name.
Deepfakes and AI-Generated Likenesses
AI-generated content has opened a new front. Deepfake technology can produce realistic video or audio of a person saying or doing things they never actually said or did. When that synthetic content appears in advertising, it raises the same core question Section 43(a) was built to answer: would consumers believe this person endorsed the product?
The framework applies in theory, and enforcement is catching up. The plaintiff still needs to show likelihood of confusion, and a sufficiently realistic deepfake used in a paid advertisement is a strong candidate for meeting that standard. Some celebrities have registered distinctive vocal patterns or motion sequences as trademarks with the USPTO. Those registrations strengthen Lanham Act claims by establishing a recognized mark, but they only protect the specific acoustic or visual configuration registered, not the person’s voice or appearance generally.
Federal jurisdiction under the Lanham Act is especially valuable in deepfake cases because it can reach foreign or out-of-state actors who target U.S. consumers. Congress has taken notice as well. The NO FAKES Act, introduced in the Senate in April 2025, would create a federal property right in an individual’s voice and likeness specifically for digital replicas, with remedies including injunctions, damages, and attorney’s fees. As of mid-2026, it has been referred to the Senate Judiciary Committee but has not advanced further.3United States Congress. S 1367 – NO FAKES Act of 2025
How Long You Have to File
The Lanham Act contains no express statute of limitations, which surprises people expecting a clean filing deadline. Federal courts borrow the most analogous limitations period from the state where the case is filed, typically the statute for fraud or unfair competition claims. In practice, that usually means a window of three to six years, though it varies by jurisdiction.
Even within that window, a defendant can raise a laches defense, arguing the plaintiff knew about the unauthorized use, unreasonably sat on their rights, and the delay caused prejudice. Courts weigh whether the plaintiff had actual or constructive knowledge of the infringement and whether the delay gave the defendant time to invest further in the infringing use. Sending a cease-and-desist letter can stop the delay clock, which is one reason experienced trademark attorneys send those letters early even when they aren’t sure litigation will follow. Waiting too long after discovering an unauthorized use is one of the most common and avoidable ways to weaken an otherwise strong claim.
What You Can Recover
A plaintiff who proves false endorsement can recover on multiple fronts. The remedies statute, 15 U.S.C. § 1117(a), provides three categories of monetary recovery: the defendant’s profits earned from the infringing use, the plaintiff’s own damages, and the costs of bringing the lawsuit.4Office of the Law Revision Counsel. 15 USC 1117 – Recovery for Violation of Rights
To recover the defendant’s profits, the plaintiff only needs to prove the defendant’s gross sales from the infringing activity. The burden then shifts to the defendant to prove costs and deductions. For the plaintiff’s own damages, a common measure is the fair market value of what the endorsement deal would have cost if the defendant had actually negotiated a license, essentially the going rate for the plaintiff’s endorsement services.
Courts have discretion to increase the damage award up to three times the actual amount found, though the statute specifies that this enhanced award “shall constitute compensation and not a penalty.”4Office of the Law Revision Counsel. 15 USC 1117 – Recovery for Violation of Rights Enhanced damages aren’t automatic; courts reserve them for cases involving willful or egregious conduct. In exceptional cases, typically involving bad faith or deliberate deception, the court may also award reasonable attorney’s fees to the prevailing party.
Injunctions
Money often isn’t the plaintiff’s first priority. Stopping the unauthorized use is. Under 15 U.S.C. § 1116, courts can order the defendant to pull all infringing advertisements, packaging, and promotional materials. Since 2020, a plaintiff who establishes a violation is entitled to a rebuttable presumption of irreparable harm, which makes obtaining an injunction significantly easier than it used to be.5Office of the Law Revision Counsel. 15 USC 1116 – Injunctive Relief The court can also require the defendant to file a sworn compliance report detailing how it removed the offending material.
Corrective Advertising
The damage to a plaintiff’s reputation can linger even after the infringing ads come down. Courts have allowed plaintiffs to recover the cost of corrective advertising, meaning what they actually spent running their own campaigns to undo the false association. Defendants can challenge these awards by arguing the corrective campaign was unreasonable or wasteful, but the principle is well established. Some courts have gone further, awarding damages based on the defendant’s advertising expenditures on the theory that the amount the defendant spent spreading the false impression is a reasonable proxy for the cost of undoing it, even when the plaintiff hasn’t yet run a corrective campaign.