Bundeskartellamt proceedings and sellers: what to do, step by step

For a seller on Amazon ES, a notification that platform access is under review – or that listings have been restricted following regulatory action – lands without much warning. The account is still there. The products may still be live. But the commercial reality has shifted: a German competition authority's proceedings against one of the world's largest online platforms can reshape the rules under which every seller in that marketplace operates, sometimes overnight. The question is not whether those proceedings affect you. The question is whether you are in a position to act on the rights they create – or whether you are losing ground while you wait.

TL;DRBundeskartellamt proceedings involving platforms such as Amazon can alter the obligations that Amazon owes to its marketplace sellers, including sellers on Amazon ES. Sellers have concrete procedural rights under the Platform-to-Business (P2B) Regulation, the Digital Services Act (DSA), and the Digital Markets Act (DMA) that survive any single suspension or listing restriction. The step-by-step path runs from understanding the exact basis of any restriction, through the internal complaint mechanism, to formal regulatory and legal remedies if the platform does not comply.

This guide sets out that path in sequence, explains the decision points where sellers most often lose ground, and describes what a well-prepared seller does differently at each stage. The sections that follow cover: what Bundeskartellamt proceedings actually mean for your Amazon ES account; the EU legal instruments that give you leverage; the procedural sequence from day one to potential escalation; the points where sellers most commonly make mistakes handling this alone; and the realistic options when internal routes are exhausted.

What do Bundeskartellamt proceedings mean for sellers on Amazon ES?

The Bundeskartellamt is Germany's federal competition authority, and its proceedings against large digital platforms create binding obligations that extend well beyond German borders – including to Amazon ES. When the authority opens proceedings under its powers to designate a company as having paramount cross-market significance (the relevant provision in German competition law being generically referred to in the trade as the §19a framework), the platform's conduct across European markets comes under scrutiny. Commitments and remedies issued in those proceedings can impose specific constraints on how Amazon treats third-party sellers: on the data it shares, the terms it applies, and the transparency it must provide when it restricts access.

For an Amazon ES seller, this matters in a practical way. If Amazon ES restricts your account or your listings, and the restriction involves conduct that the Bundeskartellamt has already addressed – say, self-preferencing in search ranking, or a unilateral change to seller terms without adequate notice – then the authority's findings are not just background noise. They are evidence that the platform is bound by specific obligations, and that your restriction may be inconsistent with those obligations. In matters we handle, this connection between a regulatory proceeding and an individual seller's situation is often the first thing we look for, because it changes both the internal-complaint strategy and the escalation options.

A Bundeskartellamt proceeding does not automatically fix your account. The authority acts at the systemic level; it does not adjudicate individual seller disputes. What it does is set the legal context in which you raise your complaint, and it gives EU-level instruments – particularly the DSA and the DMA – additional interpretive weight. A platform's obligations under the DMA gatekeeper designation framework and the DSA's statement-of-reasons requirement are reinforced, not weakened, when the same platform is under active competition-authority scrutiny. That is the leverage a seller can use.

Which EU rules actually give sellers leverage in this situation?

Three instruments matter most for Amazon ES sellers navigating a restriction connected to platform-level proceedings: the Platform-to-Business (P2B) Regulation, the Digital Services Act (DSA), and the Digital Markets Act (DMA). Each gives you a different tool, and the right combination depends on the exact nature of your restriction.

The P2B Regulation is the baseline. It requires that any suspension or termination of a seller's access be accompanied by a statement of reasons, delivered before or at the time of the restriction. If Amazon ES suspends your account or delists a product without a clear, specific reason, the P2B Regulation is breached. The statement of reasons must be detailed enough that you can understand – and challenge – the factual basis. A generic notice citing "policy violation" without identifying the listing, the conduct, and the policy section does not meet the standard. In practice, vague notices are common, and the P2B Regulation gives you a documented ground to demand more before the clock runs on your appeal.

The DSA goes further. Amazon is designated as a Very Large Online Platform (VLOP) under the DSA, which means it must operate an internal complaint-handling system that is free of charge, easy to access, and capable of producing a reasoned decision within a reasonable time. Crucially, the DSA requires that the complaint mechanism be accessible in each market – so an Amazon ES seller is entitled to use it in Spanish, not only in English or German. If Amazon's internal system fails to engage substantively with your complaint, the DSA creates a documented compliance failure that can be escalated to the relevant Digital Services Coordinator.

The DMA applies where Amazon is designated as a gatekeeper for a core platform service. Gatekeeper obligations include prohibitions on self-preferencing and requirements for fair access. If your restriction appears to arise from conduct the DMA prohibits – for instance, a change in ranking or buybox eligibility that favors Amazon's own products – then a DMA violation complaint to the European Commission is a separate, potentially parallel track. It does not resolve your individual account, but it creates regulatory pressure that can influence a platform's internal reconsideration of borderline cases. For a deeper picture of how EU and US enforcement routes differ in practice, see EU versus US enforcement differences: your questions answered.

Step one: read the restriction notice and identify the legal basis

Before any response is drafted, the restriction notice must be read carefully and in full – not to find a template answer, but to identify exactly what Amazon is claiming. This is the step sellers most often rush, and the one that determines whether every subsequent action is aimed at the right target. A notice citing an IP complaint requires a completely different response from one citing a policy violation, a verification failure, or a suspected-related-account flag.

For an Amazon ES seller in a Bundeskartellamt-relevant context, the following questions matter at this stage. First: does the notice include a statement of reasons as required by the P2B Regulation? If it does not, or if the reasons are too vague to act on, you have an immediate P2B Regulation ground before you engage with the merits. Second: is the restriction a suspension of the account, a delisting of specific products, a change to ranking or visibility, or a hold on funds? Each has a different procedural path. Third: does the notice reference a specific policy, and does that policy appear to have changed recently without the 15-day advance notice required by P2B?

Document everything at this stage. Download the notice as delivered, note the date and time, and preserve any Seller Central messages. In our practice, the absence of a clean record of the original notice has caused delays in later proceedings because the platform subsequently reissued a revised notice with different wording. The original is the one that matters for assessing compliance.

Step two: engage the internal complaint mechanism correctly

The DSA's internal complaint-handling requirement is the first formal lever, and it must be used correctly to preserve later escalation rights. A complaint submitted through Seller Central's general help system is not the same as a formal complaint through the DSA-compliant mechanism. Amazon is required to operate a dedicated system; using it specifically, and documenting that you did, matters for any subsequent regulatory escalation.

The complaint should be structured around three elements. First, a clear description of the restriction – what was restricted, when, and what notice was given. Second, the specific legal basis you are relying on: the P2B Regulation's statement-of-reasons requirement, the DSA's complaint-handling obligation, or both. Third, the precise remedy you are seeking – reinstatement of the account, relisting of specific products, or a written explanation sufficient to comply with P2B. Generic complaints asking Amazon to "reconsider" are treated as informal inquiries. A complaint that cites the regulation by name, identifies the obligation breached, and states a specific remedy is processed differently.

Language matters here. An Amazon ES seller is entitled to submit the complaint in Spanish. If the platform's internal system only processes complaints in English, that itself is a DSA compliance issue worth documenting. In matters we handle involving Amazon ES, we regularly see sellers lose weeks because they submitted informal complaints in Seller Central messaging rather than using the formal mechanism – and then had to restart the clock when the informal submission was closed without a substantive response.

The realistic timeline for an internal complaint response varies, but the DSA requires that the system be capable of producing a reasoned outcome within a reasonable period. If you receive no substantive response within a few weeks, or a response that does not engage with the specific legal grounds you raised, you have the material to escalate. For a broader view of the appeal path in EU delisting situations, see a seller's path through appealing an EU delisting.

Step three: assess escalation – Digital Services Coordinator, BEUC, or regulatory complaint

If the internal complaint mechanism fails to produce a compliant response, three escalation routes become available, and they are not mutually exclusive. Understanding the realistic effect of each is what allows a seller to choose the right combination rather than pursuing all three and diluting the effort.

The Digital Services Coordinator (DSC) for Spain – operating under the Spanish authority for digital services matters – is the first port of call for a DSA escalation. A complaint to the DSC records the platform's failure to comply with its internal complaint-handling obligations and, in cases involving a VLOP, can be referred to the European Commission. The DSC route does not produce a rapid fix for an individual account, but it creates an official record that strengthens any parallel legal action. In some matters, the existence of an open DSC complaint changes the platform's responsiveness to a direct legal demand.

Regulatory complaint to the European Commission under the DMA is appropriate where the restriction involves conduct specifically prohibited for a designated gatekeeper – self-preferencing, tying, or denial of access to data that third-party sellers are entitled to. The Commission's DMA enforcement division has opened investigations into platform conduct in several contexts; a well-documented individual complaint contributes to the evidentiary record even if it does not produce an immediate individual remedy.

Direct legal action in Spanish courts is the third route. The P2B Regulation is directly applicable in Spain and creates enforceable rights. A seller who can demonstrate that Amazon ES restricted access without a compliant statement of reasons, or suspended an account in breach of the notice requirements, can seek interim relief and damages. The viability of this route depends on the commercial stakes, the evidence trail from steps one and two, and the specific legal basis of the restriction. A pre-litigation demand letter – drafted and signed by a lawyer, citing the specific EU instruments – often resolves matters at this stage without court proceedings, because the platform's cost-benefit calculation changes when a legally grounded demand is in writing.

Where this guide goes wrong: the most common seller mistakes

The procedural sequence above sounds linear. In practice, most sellers who lose ground do so at predictable points, and naming them is more useful than a generic warning to "get help early."

The first mistake is responding to the restriction on Amazon's terms rather than on EU legal terms. Amazon's Seller Central system is designed to route sellers through the platform's own resolution process – Plan of Action submissions, performance improvement plans, verification queues. Those processes are not aligned with P2B Regulation or DSA obligations. A seller who submits a Plan of Action in response to a vague suspension notice has, in effect, accepted that the platform's own framework governs the dispute. That acceptance can undercut a subsequent argument that the notice failed to meet P2B requirements. In our practice, we distinguish between situations where the platform's internal process is the right tool and situations where EU legal instruments are the right starting point – and in proceedings connected to Bundeskartellamt scrutiny, the answer is usually the latter.

The second mistake is waiting too long to document. EU regulatory escalation and Spanish court proceedings both depend on having the original notice, the correspondence trail, and the complaint submissions in a usable form. Seller Central messages are purged over time. Accounts that are suspended can lose access to some historical data. The documentation discipline described in step one needs to happen within the first 24 to 48 hours, not after a preliminary investigation.

The third mistake is treating EU proceedings as a single-jurisdiction issue. A German competition authority proceeding that imposes obligations on Amazon's pan-European operations affects Amazon ES, Amazon DE, Amazon FR, and other surfaces simultaneously. A restriction that appears to be a routine Amazon ES account matter may, on examination, be part of a pattern the Bundeskartellamt has already identified. Sellers who see only the Amazon ES dimension miss the broader regulatory context that gives their complaint additional weight. Our work on EU marketplace regulation regularly involves cross-reading the Bundeskartellamt's published findings against the specific conduct a seller is experiencing on a national surface – because that cross-read is what turns a generic complaint into a legally grounded one.

The myth that EU sellers have no leverage once a platform suspends them is exactly that – a myth. The P2B Regulation, DSA, and DMA collectively impose obligations that no platform, regardless of its size, can simply ignore in the face of a documented, well-grounded complaint. The leverage is real; what requires attention is using it correctly and in sequence.

Realistic timelines and what changes them

Sellers in this situation understandably want to know how long resolution takes. The honest answer is that the timeline depends on which route is used and at which stage the platform responds. Internal complaint resolution through the DSA mechanism, where the platform engages substantively, can produce an outcome within several weeks. Regulatory escalation to a DSC or the Commission takes longer – measured in months rather than weeks – and is better understood as a pressure mechanism than a fast remedy. Direct legal action in Spanish courts, including interim relief applications, operates on a timeline set by the court, which varies by caseload and the urgency of the application.

What shortens the timeline in practice is a well-prepared record at each step. A complaint that arrives at the DSC with organized documentation – original notice, formal DSA complaint submission, platform's response or non-response, identified legal grounds – is processed more efficiently than one that arrives as a narrative of grievances. Similarly, a pre-litigation demand that demonstrates the seller has already used the formal EU mechanisms and has documented the failure gives the platform less room to delay.

What lengthens the timeline is restarting. Sellers who use the informal Seller Central route first, get a form rejection, then decide to pursue the formal EU route have effectively lost the time spent on the informal route. Every restart costs weeks. The step sequence in this guide is designed specifically to avoid restarts by using the right tool for the right stage from the beginning. For a complete reference on the EU regulatory instruments that apply to sellers across all surfaces, see our EU marketplace regulation: the complete guide for sellers.

Self-assessment: when to handle this alone and when to get specialist help

Not every Amazon ES restriction connected to EU proceedings requires a lawyer from day one. A seller who receives a clear statement of reasons, understands the specific policy cited, and has a straightforward factual response can often work through the internal complaint process without specialist support. The P2B Regulation and DSA create accessible rights, and a well-organized, legally literate seller can use them.

The case for specialist help becomes stronger when any of the following apply. The notice is vague or missing a compliant statement of reasons, and you are unsure whether to engage on the merits or challenge the notice itself. The restriction appears connected to platform conduct that the Bundeskartellamt or the European Commission has already addressed – because that connection changes the legal framing and the escalation strategy. The commercial stakes are significant: inventory is tied up, disbursements are frozen, or the account represents a material share of business revenue. A first complaint has already been submitted and rejected without substantive engagement. You are considering cross-border escalation and need to coordinate between Spanish, German, and EU-level regulatory bodies.

In those situations, the cost of getting the sequence wrong – submitting a Plan of Action that waives a P2B argument, missing the formal DSA complaint window, or framing a DMA complaint in terms that do not engage the gatekeeper obligations – typically exceeds the cost of structured legal support at the outset. A scoping review to assess which instruments apply and what the realistic options are is a fixed, bounded exercise, and it answers those questions before a single submission is made.

If you are at that decision point now, the most useful next step is a short review of the restriction notice and the account history. That review identifies whether you are looking at a P2B Regulation matter, a DSA matter, a DMA matter, or a combination – and it sets the sequence that follows. To arrange that review, email info@tutamenlaw.com.

Related areas

• EU Marketplace Regulation – representation for Amazon and Walmart EU sellers in suspension, delisting, and regulatory compliance matters
• Amazon Account Reinstatement – review, root-cause analysis, and Plan of Action drafting for deactivated Amazon accounts

Frequently asked questions

How long does resolving bundeskartellamt proceedings and sellers usually take on Amazon ES?

Resolution time depends entirely on which procedural route is used and how promptly the platform responds. An internal complaint through the DSA-compliant mechanism, where Amazon engages substantively, can reach an outcome within several weeks. Regulatory escalation to the Spanish Digital Services Coordinator or the European Commission is a longer process, measured in months, and is most useful as a pressure mechanism running alongside a direct legal demand. A well-documented complaint at every stage shortens the timeline; a restart after an unsuccessful informal attempt extends it. The sellers who resolve matters most efficiently are those who use the formal EU routes from the beginning rather than reverting to them after the platform's own process has already failed.

What are the main risks if I handle bundeskartellamt proceedings and sellers alone?

The primary risks are procedural: responding to the restriction on the platform's terms rather than on EU legal terms, failing to use the formal DSA complaint mechanism before escalating, and not preserving documentation within the first 24 to 48 hours. Each of these can undercut a later legal argument. A seller who submits a Plan of Action in response to a notice that lacks a compliant P2B Regulation statement of reasons may, in effect, have accepted the platform's framing of the dispute. That acceptance is difficult to walk back. The DSA and P2B Regulation create real rights, but they must be invoked in the right sequence and in the right form to be effective. Missing a step does not eliminate the rights, but it can reduce the leverage available at each subsequent stage.

Do I need a lawyer for bundeskartellamt proceedings and sellers?

Not automatically – but the answer depends on the complexity of your situation. A straightforward restriction with a clear statement of reasons and a factual response can often be handled by a well-organized seller using the formal EU complaint mechanisms. Where specialist help becomes valuable is when the notice is vague or non-compliant, when the restriction connects to platform conduct already under regulatory scrutiny, when a first complaint has already failed, or when the commercial stakes are material. In those situations, the risk of the wrong sequence or the wrong framing typically outweighs the cost of a structured initial review. Tutamen offers a fixed scoping review for EU marketplace situations, with fees quoted up front after that review is complete.

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. We act for founders, brand owners and in-house teams who need a specialist for a marketplace dispute. Our EU practice covers P2B Regulation and DSA compliance matters, DMA gatekeeper obligations, and regulatory escalation across member states – attorney-led and handled with full confidentiality from the first contact. To discuss your situation, email info@tutamenlaw.com.

Written by Priya Raman, IP & Brand Registry analyst at Tutamen.

Published: March 12, 2027

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.