Prior-use defense to a trademark claim: the current state for sellers

TL;DRA prior-use defense to a trademark claim on Amazon US is the argument that a seller was using a mark – or operating under a name, brand, or product identity – before the complainant acquired trademark rights, and that the seller's continued use is therefore lawful. On Amazon, that legal defense translates into a practical problem: the platform's complaint system does not evaluate the merits of a rights-owner complaint before acting on it, so a legitimate prior-use position must be asserted through a structured counter process, and in some cases outside Amazon entirely.

A complaint can pull a top listing within hours. Inventory may sit unsellable in an FBA warehouse while the underlying trademark dispute remains legally unresolved. That mismatch – between how quickly the platform acts and how slowly a legal argument travels through Amazon's review process – is the central challenge in these matters. This briefing covers what prior-use defense actually means in the Amazon US context, how the procedural path works in practice, the decision points sellers face, and what remains uncertain.

What is a prior-use defense, and why does it arise on Amazon?

A prior-use defense to a trademark claim stands on a core principle of US trademark law: trademark rights generally belong to the party who first used a mark in commerce in connection with specific goods or services, not necessarily the party who first registered it.

Registration with the United States Patent and Trademark Office (USPTO) creates a legal presumption of ownership and nationwide priority. But that presumption can be rebutted. If a seller can demonstrate prior, continuous, and good-faith use of a mark in commerce before the registration date – or before the complainant's first use – then the registered trademark owner's rights may not extinguish the seller's competing use in the geographic market where the seller had already established that use. This is sometimes called a "common law prior-use right" or a "senior user" defense.

On Amazon US, this situation arises in several recurring patterns. A supplier or brand owner obtains a USPTO registration – sometimes years after a seller began listing under the same or a similar mark. That brand then files a complaint through Brand Registry or through Amazon's standard IP complaint channel. The listing comes down. In our practice, we regularly see sellers blindsided by exactly this sequence: a registration they did not know was pending, filed against a mark they had been using for years.

A second pattern involves geographic or product-category limitations. Federal registration typically grants nationwide priority from the application date, but a prior user who was operating continuously in a specific region before that date may retain rights in that territory even after the registration issues. The mechanics differ between US federal trademark doctrine and Amazon's own complaint-resolution rules – and that gap is where strategy lives.

For a grounded overview of how IP complaints reach a seller's listings in the first place, see our full guide to IP and Brand Registry on online marketplaces.

What does Amazon's complaint system actually do with a trademark claim?

Amazon does not adjudicate trademark rights when it receives a complaint – it processes a notice from a rights owner and removes the content if the complaint is accepted through its intake system. Understanding that distinction shapes every decision a seller makes.

When a brand or its counsel submits a trademark complaint through Brand Registry or Amazon's standard rights-owner complaint portal, Amazon's review is procedural, not substantive. The platform checks whether the complainant holds a valid registration or a filed application that Amazon's program recognizes, whether the complained-about ASIN or content matches the goods and services covered, and whether the complaint meets the system's formal requirements. Amazon does not hold a hearing, weigh the seller's evidence of prior use, or apply the legal framework for common law rights.

This matters because a seller's prior-use defense – however strong legally – is invisible to Amazon's initial intake process. The listing comes down. The seller then has two practical channels: the counter-notice route within Seller Central and, separately, direct engagement with the complainant to seek retraction.

It also matters because a brand that obtains a preliminary result on Amazon is not necessarily prevailing in any legal sense. The prior-use question remains open. We work to press that distinction: the platform's administrative action does not determine trademark rights, and a complainant who refuses to engage with a seller's documented prior-use claim takes on legal exposure of its own.

How does the procedural path actually work?

The realistic procedural path for a prior-use defense on Amazon US involves three layered tracks that typically run in parallel, not in sequence.

Track one: the Amazon counter-notice. A seller can respond directly within Seller Central to a trademark complaint by asserting that the complaint is incorrect and providing supporting information. The response window varies by complaint type. For copyright-style takedowns, the DMCA counter-notice framework is well-defined; for trademark complaints, the process is less codified. Amazon may reinstate the listing, decline to act, or refer the matter back to the complainant. A weak or generic counter-notice – "I have been selling this product for years" – typically gets no traction. A counter-notice built around dated business records, sales documentation, registration applications, or chain-of-title evidence is materially stronger.

Track two: complainant engagement. In matters we handle, the most direct path to a reinstated listing is often a well-constructed retraction request sent to the complainant or their counsel. This is not an apology or an admission. It is a presentation of the seller's prior-use evidence, an explanation of the legal position, and a clear statement of what the seller expects. When the complainant reviews the evidence and concludes that their complaint cannot be sustained – or that pressing it creates their own risk – retraction follows and the listing is restored. The complainant has the ability to retract a complaint through Amazon's system, and that is typically the fastest route back to an active listing.

Track three: external legal action. Where a complainant refuses to retract despite a documented prior-use position, the seller's options move outside Amazon. These include a declaratory judgment action in US federal court asserting that the seller's use does not infringe the registered mark – and potentially that the seller holds superior rights in the relevant market. This track is slower and more expensive. It is also sometimes necessary, particularly where a brand has filed multiple complaints across several ASINs or is systematically targeting a competitor under color of trademark law. The path depends on the BSA version that applies to the account, which we check first – but external legal routes remain available independently of whatever Amazon's internal dispute terms provide.

For sellers who are also facing related questions about gray-market goods and authorized resale, the analysis in our briefing on the first-sale doctrine defense runs closely parallel to the prior-use question and is worth reading alongside this piece.

What evidence does a prior-use defense actually require?

A prior-use defense is only as strong as the documentary record behind it. Saying that you used a mark earlier is not the same as proving it – and on Amazon, the evidentiary standard for a persuasive counter-notice or retraction request is similar to what you would need to support a legal brief.

The core categories of evidence a well-built prior-use record includes are:

• Dated business records showing first use in commerce – invoices, purchase orders, shipping records, or warehouse receipts bearing the mark and predating the complainant's registration filing date or claimed first-use date.
• Marketing and advertising materials with dates – product packaging, catalog pages, website screenshots, or trade show materials. Metadata and archived website captures (such as those available through web archive services) can be useful where the original files no longer carry verifiable dates.
• Sales data – Amazon sales history, bank deposits, or accounting records that corroborate continuous commercial use under the mark during the relevant period.
• Any trademark filings of your own – including pending applications, prior registrations that lapsed, or correspondence with trademark counsel. Even an abandoned application can evidence an intent to use that preceded the complainant's filing.
• Third-party references – press coverage, distributor agreements, retailer records, or licensing arrangements that identify the seller's mark in the relevant period.

The geographic scope of the prior use matters. Common law prior-use rights under US trademark doctrine are typically limited to the territory in which the senior user was actively selling. A seller who sold exclusively in one region may have strong rights there but limited leverage elsewhere. In matters we handle, one of the first steps is mapping the actual geographic footprint of the seller's use against the USPTO registration's coverage and the complainant's own use history.

What often undermines a seller's position is not a weak legal claim but a weak record. Sellers sometimes have genuine prior-use rights but cannot prove them because records were not maintained, cannot be located, or were never systematically tied to the mark in question. The practical lesson is that sellers with a distinctive brand identity – even one that has never been registered – should treat dated documentation as an asset.

What are the decision points and trade-offs for sellers?

On paper, a prior-use defense looks like a clear legal right. In practice, a seller facing a live trademark complaint must make several judgment calls under time pressure, with inventory and revenue at stake.

The first decision is whether to file a counter-notice, pursue a retraction request, or do both simultaneously. Counter-notices within Seller Central can preserve the matter formally while retraction requests move faster when the complainant is engaged. But a poorly drafted counter-notice can create problems if the matter escalates – an informal statement to Amazon about the seller's rights becomes part of the record. In matters we handle, we generally assess both channels before committing to either.

The second decision is whether to register the mark. If the seller has been operating under a common law mark and has not registered, this situation is a strong signal to file immediately. A pending USPTO application does not solve the current complaint, but it establishes a formal position, creates a record of the filing date, and, if the application matures to registration, provides tools for enforcement. It also changes the conversation with the complainant: a seller who has filed for registration of their own mark is a different counterparty than one who has not.

The third decision is about escalation thresholds. If the complainant refuses to retract and is actively filing complaints across multiple ASINs – effectively using Amazon's complaint system as a competitive weapon – the calculus shifts toward external action. Declaratory judgment, a cancellation petition at the USPTO's Trademark Trial and Appeal Board (TTAB), or a formal demand letter may all be appropriate depending on the facts. These tracks run in parallel with efforts to restore the listing; they are not mutually exclusive.

The steps above describe the standard path. Your situation turns on the exact wording of the complaint notice, the account history, and the documentary record behind the mark – which is what we review first. To discuss your situation, email info@tutamenlaw.com.

What a brand-owner complaint does not mean

One of the most persistent assumptions we encounter in this practice is that a trademark complaint from a brand always means the seller did something wrong. It does not.

A brand that holds a USPTO registration has a legal tool it can use to file complaints on Amazon, and it does not need to prove infringement before Amazon acts on the notice. The platform's intake system does not require the complainant to produce evidence of actual infringement or to certify that no prior-use defense exists. The practical effect is that a registration can be used offensively – against a legitimate prior user, against a parallel importer, or against a reseller operating within rights conferred by the first-sale doctrine – and Amazon's system will act on the complaint regardless.

We regularly see complaints filed not because the seller has infringed anything but because the brand wants the competitor's listing removed for commercial reasons. That does not make the complaint legally sound. A rights owner who submits a complaint knowing that the seller holds a valid prior-use right, and who does so with the intent of suppressing competition rather than protecting a legitimate trademark interest, takes on potential liability under US law – including claims under the Lanham Act and, in some circumstances, under state unfair competition law.

That legal exposure is a real lever in the retraction conversation. Presenting it clearly, without overstatement, is part of how a well-built response to a baseless trademark complaint works. A seller who handles this alone, without that framing, is leaving a significant part of the argument on the table.

Sellers facing complaints on Amazon's German marketplace encounter a related but distinct regulatory overlay. Our analysis of bundling and variation abuse complaints on Amazon DE illustrates how complaint mechanisms differ across Amazon's surfaces.

What remains uncertain – and what sellers should do now

Prior-use doctrine under US trademark law is well-established. What remains uncertain for marketplace sellers is how Amazon's internal complaint and appeal processes will treat a prior-use argument over time as Brand Registry tools evolve and as enforcement automation continues to tighten. Amazon has expanded automated enforcement capabilities, and the role of human review in complaint resolution is not fixed.

What is consistently true: a documented prior-use record, assembled and presented systematically, produces better outcomes than a generic denial. The sellers who find themselves with the weakest positions are those who have genuine prior-use rights but disorganized or incomplete records, and who submit informal counter-notices without a legal foundation.

The practical steps for a seller facing a live trademark complaint are straightforward, even if the legal work behind them is not. Preserve every piece of documentation that touches the mark and its commercial history. Do not respond to the complaint informally before reviewing what the response will say and what record it will create. Identify whether the complainant's registration date, application date, or first-use date actually predates your own commercial use. If it does not, you have a prior-use position worth building.

If a first appeal or filing already came back rejected, a second read can identify the specific reason it failed and what, if anything, is still available. To discuss next steps on a rejected counter-notice or a live complaint, contact Tutamen at info@tutamenlaw.com.

Related areas

• IP and Brand Registry on online marketplaces – the full guide to rights-owner complaints, counter-notices, and Brand Registry for sellers
• First-sale doctrine defense – when authorized resale and gray-market goods intersect with trademark complaints

Frequently asked questions

How long does resolving prior-use defense to a trademark claim usually take on Amazon US?

The timeline depends on which track is used and how the complainant responds. Where a complainant reviews a well-evidenced retraction request and agrees to retract, listing reinstatement can happen within days to a few weeks. Where the complainant refuses to engage and the matter moves to a formal counter-notice, Amazon's internal review adds additional time. External legal tracks – declaratory judgment or a TTAB proceeding – operate on a timeline of months to years. In most matters, the goal is to secure retraction at the earliest stage, which is why the quality of the initial retraction request matters so much.

What are the main risks if I handle prior-use defense to a trademark claim alone?

The primary risk is creating an informal record that weakens the legal position. A counter-notice filed without a clear legal foundation may be rejected and may also narrow what arguments remain open later. A second risk is failing to identify and present the full range of prior-use evidence, leaving the strongest part of the argument unused. A third is missing the registration opportunity: sellers with a genuine prior-use position who do not file a USPTO application during the dispute period lose time they cannot recover. An attorney-led review identifies these gaps before the first filing.

Do I need a lawyer for prior-use defense to a trademark claim?

A lawyer is not required, but the legal and procedural complexity of a prior-use defense is meaningful. The analysis requires comparing your commercial use history against the complainant's registration date, application date, and claimed first-use date – and doing so accurately, because errors in that comparison affect every argument downstream. It also requires framing the counter-notice or retraction request in terms that carry legal weight with the complainant and their counsel. Sellers who engage attorney assistance typically move faster and avoid the procedural mistakes that close off otherwise available options.

About Tutamen

Tutamen is an independent law firm for online marketplace sellers. We represent Amazon, Walmart, Etsy and eBay sellers in account deactivations, frozen-funds recovery, intellectual-property disputes, arbitration and Notices of Dispute, and US federal Schedule A defense, plus EU marketplace regulation. Our work is attorney-led and confidential, with fees quoted up front after a short review. We act for founders, brand owners and in-house teams who need a specialist for a marketplace dispute. Our IP and Brand Registry practice is built on direct experience with rights-owner complaints, counter-notices, and Brand Registry disputes across Amazon US and other surfaces. To discuss your situation, email info@tutamenlaw.com.

Byline: Adrian Cole – Partner, IP & Brand Registry

Disclaimer: This article is general information, not legal advice, and does not create an attorney-client relationship. Marketplace policies and the law change, and every account and case is different. For advice on your situation, contact Tutamen at info@tutamenlaw.com.