Trademarks and Keyword Advertising: What Is Settled and What Is Not

Two Acts That Get Conflated

These disputes turn on a distinction most commentary collapses. Buying a competitor's brand name as a keyword and putting that brand name into your advertisement are different acts, treated differently by the platforms and analysed differently in law.

The keyword purchase uses the mark as a targeting instruction inside the advertising system, and it is never displayed. The questions here are threshold ones — whether buying a keyword is a use of the mark in commerce at all, and if it is, whether an ad that never shows the mark can cause confusion on a results page that labels paid placements and shows the advertiser's own name.

Visible use puts the mark in the ad headline, the description or the display URL, where it forms part of the advertiser's own statement to the customer. That is closer to a conventional trademark case, and the advertiser's framing is directly probative.

A third category sits outside advertising policy entirely: the mark on the landing page, in titles, headings and body copy, where comparative and false-advertising questions live alongside confusion.

What the Lanham Act Provides

Two causes of action carry most of these disputes. 15 U.S.C. 1114(1) covers registered marks, reaching use in commerce of a reproduction, counterfeit, copy or colorable imitation of a registered mark in connection with the sale, offering or advertising of goods or services where the use is likely to cause confusion, mistake or deception. 15 U.S.C. 1125(a)(1) reaches unregistered marks and false designations of origin, and its two limbs are routinely confused: (a)(1)(A) is the confusion limb, and (a)(1)(B) is the false advertising limb, which is the hook for a misleading comparative claim in ad copy or on a landing page. Remedies sit in 15 U.S.C. 1117.

Registration is not a precondition to a claim in the way copyright registration is. It nonetheless confers substantial advantages, including constructive notice, prima facie validity and the possibility of incontestability, and platform complaint processes are built around demonstrable rights. A company enforcing an unregistered mark is not without a claim, but it works harder for it.

Likelihood of Confusion Is a Jurisdictional Question

Both causes of action turn on likelihood of confusion: whether the use is likely to cause an appreciable number of ordinarily prudent purchasers to be confused as to source, sponsorship, affiliation or approval. That standard is applied through circuit-specific multifactor tests. The factors commonly include the strength of the mark, similarity of the marks, relatedness of the goods, evidence of actual confusion, marketing channels, purchaser care, intent and the likelihood of expansion.

Two framework points are safe. Confusion need not occur at the point of sale, since doctrines addressing pre-sale and post-sale confusion exist, though their scope varies. And purchaser sophistication matters: business buyers making high-consideration purchases bear on the degree-of-care factor, as a factual question rather than a legal conclusion.

What this page does not do is state how any circuit weighs those factors in a search advertising context. That question is genuinely unsettled, and it is the first thing counsel researches.

Initial Interest Confusion, and Why It Is Contested

Initial interest confusion is the doctrine under which liability may attach where a use creates confusion that captures a consumer's initial attention, even though it is dispelled before any purchase. The rationale is that the defendant has appropriated goodwill embodied in the mark to obtain a hearing it would not otherwise have received.

It has been the principal theory in internet trademark disputes, and in keyword advertising in particular, for an obvious reason: a searcher who sees a competitor's ad on a branded query is generally not confused by the time they buy anything.

The doctrine's existence, formulation and scope vary materially by circuit, and it has attracted sustained academic criticism. Some formulations require the initial confusion to be material. Anyone assessing exposure should treat its availability as something counsel establishes for the forum, not as a settled rule in either direction.

Fair Use, Nominative Use, and Comparison Pages

Two different things share the name fair use. The statutory version, 15 U.S.C. 1115(b)(4), is a defence for use of a term otherwise than as a mark, fairly and in good faith, to describe the party's own goods. The Supreme Court held in KP Permanent Make-Up, Inc. v. Lasting Impression I, Inc., decided 8 December 2004, that a defendant raising that statutory defence bears no burden to negate likelihood of confusion: the plaintiff must prove confusion, and some degree of consumer confusion is compatible with a successful fair use defence.

Nominative fair use is a separate, judicially developed concept covering use of another party's mark to refer to that party's own goods — comparative advertising, compatibility statements, resale, commentary. Formulations commonly require that the product is not readily identifiable without the mark, that no more of it is used than necessary, and that nothing suggests sponsorship. Adoption differs by circuit.

Comparative advertising itself is lawful and encouraged. The FTC's policy statement at 16 C.F.R. 14.15 states that the Commission encourages naming competitors while requiring clarity and, where necessary, disclosure to avoid deception.

Google's Trademark Policy Is Contract, Not Law

Platform policies are private contract terms: compliance is not a defence to a Lanham Act claim, and removal of an ad is not an adjudication that anything infringed. Google's published trademarks policy still matters, because it determines what a complaint can achieve.

Google states that it will review a trademark owner's complaint and will only accept complaints against specific advertisers identified by their URLs. It states that it will not restrict trademarks used as keywords, and that it will restrict trademark use by direct competitors and use that is confusing, deceptive or misleading. It permits trademarks in ad text for resellers whose landing page is primarily dedicated to selling the relevant goods, for informational sites about them, and for descriptive use in the term's ordinary meaning.

Three consequences follow. The system is complaint-driven, so nothing happens automatically. It reaches ad text, not organic listings and not landing page copy. And its wording changes and varies by region, so the current text is worth reading before relying on any summary, including this one.

When a Competitor Bids on Your Brand

Doing nothing is a legitimate option and often the right one. A clearly labelled competitor ad above a strong organic listing for a branded query is a nuisance rather than a diversion, particularly where buyers know both vendors and the purchase involves evaluation, procurement and references.

Understand the cost dynamics before escalating. Defending your own brand terms means paying for clicks on traffic you may have received anyway, and the price is a function of how contested the auction is, so a bidding contest raises what you both pay for the same buyers. It is a spend decision, argued on incremental value rather than principle.

Some situations change the calculation: the mark in the competitor's ad headline or display URL; a landing page implying affiliation or official status; ads targeting your brand alongside support, login or renewal terms, which intercept existing customers rather than prospects; and comparative claims that are stale or unsubstantiated. Those are worth a documented complaint.

Preserve the Evidence, Because Advertising Disappears

Advertising evidence is ephemeral in a way that catches companies out. An ad pulled today is gone from the interface tomorrow, and auction insights and impression share reports cover rolling windows.

What is worth preserving, from the moment a pattern is noticed:

• full-page captures of the results page showing the query, the ad, the date and the URL;
• the landing page as it appeared, captured in the same session as the ad;
• exports of auction insights and impression share, taken on a schedule;
• your own account records: keyword and negative keyword lists, match types, ad copy versions and change history;
• a note of methodology — who captured it, on what device, in what location, signed in or out — since personalisation changes what appears.

Where an agency runs the accounts, the instruction has to reach the agency, and the company needs administrative access.

If It Becomes a Dispute

When one of these disagreements becomes a claim, the technical record decides how much can be argued. Counsel needs the ads as they actually ran, tied to specific queries and dates; the landing pages as they appeared at the same moment; and the account data behind them — keyword and negative keyword lists, match types, ad copy version history, change logs, and reporting showing overlap on branded terms. Reconstructing what a searcher saw on a given day, from data held by a third-party platform, is the analytical problem.

That reconstruction is what an expert witness is engaged to provide and explain, including whether captures can be authenticated and what platform reporting does and does not show. Preservation is the constraint: reporting windows, change history retention and agency account access run on schedules the company does not set, so a hold placed early, and extended to any agency holding the accounts, decides whether the evidence still exists when it is needed.

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