In a landscape where digital marketing relies heavily on interconnected content and seamless user journeys, a landmark ruling from the United States Court of Appeals for the Tenth Circuit has fundamentally altered the legal stakes for online advertisers. The decision in KetoNatural Pet Foods, Inc. v. Hill’s Pet Nutrition, Inc. (No. 24-3185) serves as a stark warning to businesses: you are legally responsible for the promotional content you direct your customers toward, even if that content resides on a third-party server.
For years, the conventional wisdom in digital marketing held that a hyperlink was merely a navigational tool—a digital "pointer" that allowed users to visit external resources without the host site assuming liability for the destination’s accuracy or claims. The Tenth Circuit’s July 14, 2026, ruling has dismantled this shield, holding that when a company intentionally integrates third-party materials into its own promotional narrative via hyperlinks, that external content can be legally classified as the company’s own "commercial speech."
The Core Facts: KetoNatural v. Hill’s Pet Nutrition
The dispute centers on allegations of false advertising under the Lanham Act. KetoNatural Pet Foods brought suit against Hill’s Pet Nutrition, alleging that Hill’s utilized hyperlinks on its own website to direct consumers toward third-party articles and studies that allegedly contained false or misleading claims regarding pet nutrition.
The core of the legal contention was not whether Hill’s wrote the articles in question—they did not—but whether the act of embedding those links constituted an adoption or endorsement of the claims within those articles. By directing consumers to these specific third-party pages as part of a cohesive promotional strategy, the plaintiff argued, Hill’s effectively curated a deceptive message that functioned as its own commercial speech.
The Tenth Circuit agreed, finding that the purposeful integration of these links into the company’s broader marketing message created a legal nexus between the host and the destination. The court’s logic suggests that if a company directs a consumer to a specific destination to support a product claim, the company cannot hide behind the "third-party" label to avoid accountability for the veracity of those supporting materials.
Chronology of the Legal Shift
The evolution of this legal standard has been gradual but steady, culminating in the 2026 decision.
- Early Digital Era (The "Mere Pointer" Doctrine): For decades, courts largely treated hyperlinks as distinct from the host website, often citing that a link does not equate to the creation or adoption of the linked content.
- The Rise of Targeted Marketing (2018–2023): As marketing shifted toward "content curation" and "authority building," brands began using third-party studies and influencer blogs to bolster claims. Regulators, particularly the Federal Trade Commission (FTC), began scrutinizing the relationship between brands and the content they amplified.
- The Filing of KetoNatural v. Hill’s (2024): The litigation began in the lower courts, where the defense attempted to dismiss the claims by arguing that the Lanham Act does not impose a duty of oversight on external links.
- The Tenth Circuit Decision (July 2026): The appellate court provided the definitive ruling, clarifying that "commercial speech" is not defined by who physically wrote the text, but by the intent and context of the communication. By choosing which external materials to highlight, a company takes ownership of the promotional narrative those links create.
Supporting Data and Marketing Context
To understand the magnitude of this shift, one must look at how modern marketing funnels operate. Today’s digital advertising ecosystem is built on a "web of trust." Brands frequently use:
- Influencer Ecosystems: A brand links to an influencer’s review to demonstrate "social proof."
- Scientific Curation: A brand links to a third-party study to validate health or performance claims.
- Generative AI Integration: Modern websites often use AI to aggregate "relevant articles," which may inadvertently link to unsubstantiated claims.
According to marketing analytics, nearly 78% of B2C websites utilize outbound links as part of their conversion strategy. Under the new Tenth Circuit standard, if any of those links lead to content that makes a false claim about the host’s product, the brand is now vulnerable to Lanham Act litigation. The "pathway" to the content is now just as legally significant as the content itself.
The Regulatory Perspective: Beyond the Lanham Act
While KetoNatural v. Hill’s is a private litigation matter under the Lanham Act, the implications for regulatory agencies are profound. Richard B. Newman, an advertising practices attorney at Hinch Newman LLP, notes that this decision provides a blueprint for agencies like the FTC and state Attorneys General.
"Regulatory agencies have long sought to hold brands accountable for the ‘entire scope’ of their marketing campaigns," says Newman. "This ruling gives them the judicial backing to argue that if a brand intentionally directs traffic to deceptive third-party content, that brand is essentially ‘adopting’ that deception as their own."
If the FTC views a company’s hyperlink strategy as part of a misleading promotional campaign, the company could face:
- Civil Investigative Demands (CIDs): Formal inquiries into internal marketing strategies.
- Consent Decrees: Costly, long-term monitoring by the government.
- Consumer Redress: Massive fines and the requirement to issue corrective advertising.
Implications for Digital Marketers and Corporate Counsel
This ruling mandates a complete overhaul of how digital marketing teams manage their outbound link strategies. Compliance can no longer be limited to the text on a brand’s own landing page.
1. The "Intent" Test
Courts will now look at whether the linking was "intentional" and whether the content serves a "promotional purpose." Marketing teams must ask themselves: Are we linking to this to prove our claims? If the answer is yes, that content is now part of your brand’s liability portfolio.
2. Due Diligence on Outbound Links
Just as brands conduct due diligence on partners and vendors, they must now perform "link auditing." If you are linking to a scientific study, a third-party review, or an industry article, you must ensure that every claim within that destination is legally defensible.
3. The Generative AI Factor
Automated content tools that suggest "related reading" pose a new, significant threat. If an AI tool on a brand’s website suggests a link that contains false advertising, the brand may be held liable for the algorithm’s choices. Human oversight of AI-generated outbound links is no longer optional—it is a legal necessity.
4. Legal Compliance Review
Companies should consult with experienced FTC compliance counsel to establish a vetting process for all outbound links. This process should evaluate whether the destination content could be construed as misleading, unsubstantiated, or potentially defamatory.
Conclusion: A New Standard of Digital Responsibility
The Tenth Circuit’s decision in KetoNatural v. Hill’s Pet Nutrition marks the end of the "hands-off" era of hyperlinking. In the eyes of the law, the digital world is no longer a collection of isolated islands; it is a single, interconnected ecosystem where the curator of the journey is responsible for the destination.
For businesses, the takeaway is clear: if you invite a consumer to follow a link, you are responsible for the message they find on the other side. As Richard B. Newman emphasizes, courts are increasingly looking at the "promotional pathway as a whole." To protect their bottom line and their reputation, brands must treat every hyperlink as a statement of fact and an extension of their own commercial speech.
Disclaimer: This article is provided for informational purposes only and does not constitute legal advice. It is not intended to create, and does not create, an attorney-client relationship. You should consult with an experienced attorney regarding your specific legal situation. This publication may be considered attorney advertising in some jurisdictions.
About the Author
Richard B. Newman is a nationally recognized FTC defense lawyer and advertising compliance attorney at Hinch Newman LLP. He represents clients in high-profile investigations (CIDs) and enforcement proceedings initiated by the Federal Trade Commission, state attorneys general, and other regulatory agencies. His practice focuses on the complex intersection of digital marketing, advertising law, and transactional compliance, including affiliate marketing, lead generation, and the regulatory challenges posed by emerging technologies.
