Counterfeit and Unauthorized-Seller Disputes: What to Do

Three distinct problems that get lumped together

It's worth separating these clearly, because the right response is different for each:

• Counterfeit products — items that are fake, not genuine units of your product, sold as if they were authentic. This is straightforwardly an IP/trademark infringement and, in many jurisdictions, potentially criminal fraud, not just a civil dispute.
• Unauthorized resellers of genuine product — a seller offering real, authentic units of your product without your authorization (often sourced through a diverted distribution channel, sometimes called "gray market" or "diversion"). This is legally murkier than counterfeiting in many jurisdictions — reselling genuine goods you legitimately acquired is often protected, even without the brand owner's blessing.
• MAP (Minimum Advertised Price) violations — an authorized or unauthorized reseller pricing below an agreed minimum. This is a contract enforcement issue between you and whoever agreed to your MAP policy, not generally something marketplaces will enforce on your behalf, since marketplaces are typically not a party to your MAP agreements.

Identifying which one you're actually dealing with

• Test buy the listing. For a genuine counterfeit concern, purchasing the item and inspecting it against known-genuine units (packaging, materials, included accessories, any serialization) is usually the most reliable way to confirm counterfeiting versus a genuine-but-unauthorized product.
• Check the seller's likely sourcing. An unauthorized reseller offering a suspiciously low price on an otherwise identical listing to yours is more likely diverted genuine inventory than counterfeit, especially in categories where counterfeiting is harder to execute convincingly (though certainly not impossible in any category).
• Watch for quality complaints in reviews on the unauthorized listing — a cluster of complaints describing a materially different product experience than your own genuine item is a meaningful signal pointing toward counterfeiting rather than diversion.

Handling confirmed counterfeits

• Report through the marketplace's dedicated IP/counterfeit reporting tool (see How to Handle an IP Infringement Claim for the general reporting process), providing your trademark registration and test-buy evidence.
• Brand Registry-enrolled brands generally have access to more effective tools here — Amazon's Transparency program (unit-level serialization) and Project Zero (self-service takedown authority) are both aimed specifically at this problem, and are worth adopting once counterfeiting becomes a recurring issue for your brand rather than an isolated incident (see Marketplace Brand Registry Programs, Explained).
• Persistent, serious counterfeiting (an organized operation, repeat offenders, significant volume) may warrant involving an IP attorney for cease-and-desist letters or formal legal action beyond what marketplace-internal reporting tools can accomplish.

Handling unauthorized resellers of genuine product

• Confirm it's genuinely your product before treating it as an authorization issue rather than a counterfeit issue (the two require different responses).
• Trace the diversion source if possible — an unauthorized reseller got the inventory from somewhere, and identifying whether it's coming from an authorized distributor selling outside their agreed channel, returned/liquidated inventory being resold, or another leak in your supply chain is usually more valuable long-term than repeatedly reporting individual unauthorized listings without addressing the source.
• Marketplace reporting tools are more limited here than for counterfeiting, since reselling genuine goods is often not, by itself, a policy violation or legal infringement — some marketplaces will still act on listings that misuse your brand name, images, or trademark in ways that exceed legitimate resale (for example, using your registered trademark in a way that implies false authorized/official status), but a marketplace generally won't remove a listing simply because it's an unauthorized reseller of a genuine item.
• Direct enforcement (contract or cease-and-desist) is often the more effective lever for a genuinely legitimate diversion problem, particularly against the distributor/wholesaler leaking inventory outside agreed channels, rather than chasing each downstream unauthorized reseller individually.

Handling MAP violations

• MAP policies are enforced through your own contracts with authorized resellers/distributors — a marketplace is generally not a party to that agreement and won't enforce your pricing terms for you.
• Build MAP violation monitoring into a regular process (manual spot-checks or a monitoring tool, depending on your scale) rather than reacting only when you happen to notice a violation.
• When you find a violation by an authorized partner, address it directly through your contract's enforcement terms (a warning, a penalty, or termination of the authorized relationship for repeat violations) — this is a commercial relationship issue to resolve directly with the counterparty, not something to route through a marketplace's IP-complaint tooling.

Building a repeatable process rather than reacting case by case

As a brand grows, one-off manual monitoring stops scaling. Consider:

• Periodic (not just reactive) searches across the marketplaces you sell on for your brand name and product titles, looking for new unauthorized or suspicious listings rather than waiting for a customer complaint to surface one.
• A documented internal process for how to triage a newly discovered listing (counterfeit vs. unauthorized-genuine vs. MAP violation) and route it to the right response, so the decision doesn't have to be made from scratch each time.
• A relationship with an IP attorney before you urgently need one, so escalation beyond marketplace-internal tools doesn't start from zero when a serious case arises.
• Tracking outcomes of past reports and enforcement actions, to identify recurring sources (a specific distributor, a specific region) worth addressing structurally rather than fighting the same leak repeatedly at the retail-listing level.

Common mistakes

• Treating every unauthorized listing as a counterfeit issue without actually verifying via test buy.
• Expecting a marketplace to enforce a MAP agreement it isn't a party to.
• Reporting individual unauthorized-reseller listings repeatedly without ever tracing or addressing the diversion source.
• Filing inaccurate or overly broad counterfeit reports, risking your brand's own reporting credibility with the marketplace.
• Not adopting Brand Registry's enhanced tools (Transparency, Project Zero) once counterfeiting becomes a recurring, not one-off, problem.

FAQs

• Is reselling genuine products without my authorization illegal? Often not, in many jurisdictions — reselling genuine goods you lawfully acquired is frequently protected, even without the brand owner's consent, though the specifics depend on your jurisdiction and the facts (how the goods were acquired, any territorial restrictions, trademark-use-in-advertising issues). This is genuinely a gray area worth an attorney's input if it's a significant problem for your brand.
• Will a marketplace remove an unauthorized reseller's listing just because I ask? Not automatically, if the underlying product is genuine and the listing doesn't otherwise violate policy — marketplaces generally distinguish between counterfeit enforcement (which they take on directly) and pure resale-authorization disputes (which they're often more reluctant to adjudicate).
• What's the fastest way to confirm counterfeiting versus diversion? A test buy, compared carefully against a known-genuine unit, is usually the most reliable single step.