Brand Protection
Unauthorized seller: how to identify and remove anyone selling your brand without permission on Mercado Livre
Branddi ·
Mercado Livre is the largest marketplace in Latin America and, for many Brazilian brands, the digital channel with the highest volume. But along with the size of the ecosystem comes a chronic problem: the presence of unauthorized sellers that compete for the Buy Box, practice prices below MAP, and compromise margin, positioning, and brand reputation.
For the manager who needs to protect revenue and organize the channel, identifying and removing these sellers is no longer a sporadic task. It became mandatory routine — and requires a clear flow of monitoring, reporting, and removal.
This article explains what characterizes an unauthorized seller, the impact they generate on your business, and the practical step-by-step to regain control of your catalog on Mercado Livre.
What characterizes an unauthorized seller
It's common to confuse three distinct figures. The legitimate reseller is the one who has a contract or formal authorization from the brand to distribute products in the channel. They follow the MAP, respect the positioning, and contribute to the ecosystem.
The opportunistic seller is the one who acquires products through parallel channels — irregular wholesalers, distributors outside the contract, surplus stock — and resells without any formal relationship with the brand. The product is genuine, but the operation is misaligned: price below MAP, incorrect descriptions, ads without visual standard.
The counterfeiter, in turn, sells products that are not original, using the brand's name and image to deceive consumers. It's the most serious category, with legal, sanitary (in some segments), and reputational implications.
The three are "unauthorized sellers", but they require different approaches. Treating them all the same way is one of the most common mistakes by marketplace teams.
The real impact on Buy Box, price, and reputation
Unauthorized sellers usually start with an aggressive pricing strategy to win the Buy Box. This forces official sellers to reduce margins to compete, generating a price war that erodes the profitability of the entire channel.
The effect extends to brand positioning. When the consumer finds the same product with large price differences between ads, the perception of value drops. Launches lose impact, premium products are perceived as generic, and entire categories become commoditized.
Finally, there's the direct reputational impact. Unauthorized sellers usually have worse performance in delivery time, post-sales, and quality of service. The resulting complaints stay tied to the brand name, even when it has no relation to the operation.
According to FNCP, in 2025 alone the illegal market in Brazil (smuggling, counterfeiting, and piracy) generated losses of R$ 473.2 billion — a record that shows how these problems escalate quickly when not monitored in an integrated way.
How to identify suspicious sellers in your catalog
The starting point is systematic price monitoring. Ads with values significantly below MAP, especially on sellers with low reputation or little history, must be automatically flagged for analysis.
Next, it's worth analyzing stock and variety. Sellers offering volume disproportionate to declared size, or maintaining simultaneous presence in dozens of SKUs of your catalog, usually operate via parallel channels. Cross-referencing with your official authorized distributor base quickly confirms the irregularity.
The third sign is product origin tracking. Strategic test purchases, packaging analysis, lot, and invoice allow identifying the supply chain and, in many cases, reaching the irregular distributor that's feeding the problem at the end.
Removal process: from monitoring to takedown
Mercado Livre offers the Brand Protection Program (BPP), the official channel through which registered brands can report infringing ads and request removal. The process requires consistent documentation — brand registration at INPI (National Institute of Industrial Property), clear identification of the infringement, and evidence — but it's the fastest path for clearly irregular ads.
For more complex cases, extrajudicial notifications addressed to the seller or their supplier come into play. The formal notification creates legal history and, in many cases, is sufficient for the operation to cease, especially when the seller realizes the brand is structured to follow up.
In parallel, automated takedown accelerates work at scale. When the volume of irregular ads is high, manual processes can't handle it. Automation ensures that each identified ad quickly enters the reporting flow, without depending on the e-commerce team's internal operational capacity.
Strategic step-by-step for reporting on Mercado Livre
- Register your brand in the Brand Protection Program — releases the preferential reporting channel and gives visibility to Mercado Livre analysts.
- Standardize the documentation of the infringement — ad screenshots with date and time, permanent link, comparison with the official ad, proof of brand ownership (INPI certificate), and objective description of the type of violation.
- Monitor recurrence — removed sellers usually come back with new registrations. Without continuous monitoring, the work falls apart in a few weeks.
How to accelerate and scale the protection of your catalog
Executing this entire flow internally is possible, but requires time, legal knowledge, and monitoring technology. The alternative is to work with a specialized structure that covers the complete cycle — identification, reporting, removal, and recurrence tracking — at scale and with predictability.
Branddi operates this structure for brands that need to keep Mercado Livre under control. Recovered Buy Box, removed irregular sellers, MAP respected, and organized resale ecosystem, with continuous visibility for the e-commerce team and periodic reports for leadership.
Regain control of your catalog
Unauthorized seller is not a small problem. It steals Buy Box, compresses margin, harms positioning, and opens room for complaints that affect the brand as a whole. The longer the problem persists, the harder to reverse — sellers get used to the space, the price war becomes the norm, and margin recovery becomes a long-term project.
With Branddi's Brand Shield (Commercial Violation / MAP and Buy Box Protection modules), you identify irregular sellers, execute removals with agility, and maintain continuous visibility over your channel. The result is stable Buy Box, preserved MAP, and a resale ecosystem aligned with the brand strategy.
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