How to File a Misleading Advertising or Unfair Competition Complaint in Bulgaria

Last updated: 19 Aug 2026

Misleading advertising complaints Bulgaria procedures have taken on renewed importance following recent amendments to the Competition Protection Act (Закон за защита на конкуренцията), which have strengthened the enforcement powers of the Commission for Protection of Competition (Комисия за защита на конкуренцията, CPC) and raised the financial exposure for advertisers. This guide sets out, step by step, how competitors, businesses, consumers and consumer groups can lodge a misleading advertising or unfair competition complaint, what evidence is required, and how long each stage takes. It is written for in-house counsel, marketing and communications teams, SMEs, consumer organisations and litigators who need practical, actionable direction rather than high-level commentary.

Every procedural point is tied to the governing framework and the two competent authorities, the CPC and the Commission for Consumer Protection (Комисия за защита на потребителите, KZP).

Overview: Misleading Advertising Complaints in Bulgaria

Two distinct but overlapping legal regimes govern misleading advertising complaints Bulgaria authorities handle. The first is competition law: the Competition Protection Act prohibits unfair competition, including misleading and comparative advertising that damages competitors or distorts the market. The CPC enforces this regime. The second is consumer protection law, which implements the EU Unfair Commercial Practices Directive (2005/29/EC) and is enforced by the KZP, targeting practices that harm consumers rather than competitors.

Choosing the correct forum is the first strategic decision. A complaint about a rival’s deceptive price claims that divert customers away from your business is a classic unfair competition complaint Bulgaria matter for the CPC. A complaint about a trader misleading individual consumers, false discounts, misleading product descriptions, hidden charges, falls more naturally to the KZP. In practice, conduct often engages both regimes, and parallel filings are possible.

Recent reforms have reshaped the landscape. They have broadened the definitions of prohibited conduct, sharpened rules touching pricing and comparative claims, adjusted the framework for administrative sanctions, and encouraged more frequent use of interim measures. For advertisers, the practical consequence is a higher-risk environment; for complainants, a more responsive enforcer. The remainder of this guide translates that framework into a filing procedure.

Who Can File: Eligibility

Standing determines who may lodge a complaint and with which authority. Bulgarian law recognises several categories of complainant, each with distinct considerations.

Businesses and competitors

Competitors are the most common complainants in unfair competition matters. A business that suffers, or is likely to suffer, harm from a rival’s misleading advertising, lost sales, reputational damage, distorted market share, has standing to file with the CPC. Legal representation is not mandatory but is strongly advisable given the evidential and procedural demands. Corporate complainants should evidence their legal existence and standing through a current extract from the Bulgarian Commercial Register (Търговски регистър).

Consumers and consumer groups

Individual consumers who have been misled by advertising typically direct their consumer protection complaint Bulgaria to the KZP, which is structured to handle consumer-facing grievances. Registered consumer organisations may act on behalf of consumers, and their involvement can add weight to a complaint, particularly where widespread or systemic conduct is alleged. Consumers may also inform the CPC where the conduct has a broader market-distorting dimension.

Public authorities and NGOs

The CPC may act on its own initiative (ex officio) where it identifies conduct warranting investigation, meaning a formal complaint is not always a prerequisite to enforcement. Non-governmental organisations, industry associations and other bodies with a legitimate interest may submit information or complaints. Where a representative files on another party’s behalf, a lawyer, an NGO or a consumer group, a valid power of attorney or representation letter must accompany the submission. Where administrative time limits apply to particular grievances, complainants should act promptly rather than assume an open-ended window.

Step-by-Step: How to File a Misleading Advertising Complaint

The core of any misleading advertising complaints Bulgaria strategy is a disciplined, sequenced filing process. The following steps track the CPC procedure and indicate where a parallel KZP route may apply. Each step is cross-referenced to the timeline table below.

1. Pre-filing assessment. Establish factual and legal viability before committing resources.
2. Prepare the complaint. Assemble the written complaint and the evidence bundle.
3. Submit to the CPC. Lodge the complaint and secure acknowledgement.
4. Admissibility review. The CPC checks the complaint meets formal requirements.
5. Investigation. Evidence gathering, requests for information and hearings.
6. Decision and follow-up. Sanctions, remedies and appeal rights.
7. Parallel routes. Consumer complaints and civil damages claims.

Step 1, Pre-filing assessment

Before drafting anything, test the claim. Identify the precise advertising conduct, the medium and dates, and the legal basis under the Competition Protection Act. Ask three questions: Is the advertising objectively misleading or unfair? Can harm to competition or consumers be shown? Is there admissible evidence to support each allegation? This is where the correct forum is chosen, CPC for competitor harm, KZP for consumer harm, or both. For consumers, a consumer group or KZP adviser can assist at this stage. Action: document the theory of the case in a short internal memo so every later filing decision maps back to it. Typical duration: 1–7 days.

Step 2, Prepare the complaint

A well-constructed complaint sets out the parties, a clear chronology of facts, the specific unlawful conduct alleged, the legal basis relied upon, and the relief sought. Attach the evidence bundle (detailed in the next section) and prepare an evidence index so the CPC can navigate it quickly. Where documents are in a language other than Bulgarian, arrange certified translations. Mark any commercially sensitive material as a confidential annex and request non-disclosure. Action: draft a short cover statement summarising the harm and, where urgency exists, flag the need for interim measures. Typical duration: 2–14 days.

Step 3, Submit the complaint to the CPC

To file complaint CPC channels, submit through the official routes published by the Commission, online, by post or in person. Retain proof of submission. The CPC will confirm receipt and, where applicable, assign a case reference. If pursuing the consumer route in parallel, submit the corresponding complaint to the KZP at this stage. Action: keep the acknowledgement and reference number; all subsequent correspondence should quote it.

Step 4, CPC preliminary review and admissibility

The CPC first checks whether the complaint is admissible: whether the complainant has standing, whether the conduct falls within the CPC’s mandate, and whether the submission is complete. Incomplete complaints may be returned for correction, which delays matters, a further reason to get Step 2 right. Where the CPC declines to open a formal case, it will indicate the basis, and the complainant may reconsider the forum or supplement the evidence. Typical duration: guideline periods vary; several weeks is common.

Step 5, Investigation phase

Once admitted, the CPC investigation begins in earnest. The Commission gathers evidence through requests for information addressed to the parties and third parties, may conduct on-site inspections, and can hold hearings. The respondent advertiser is given the opportunity to respond to the allegations. Complainants should expect to answer follow-up questions and, in complex matters, to provide supplementary expert evidence. This is the longest phase and its length correlates directly with complexity. Typical duration: several months, with complex cases running longer.

Step 6, Decision, sanctions and appeals

The CPC concludes with a reasoned decision. Where it finds a breach, it may impose administrative sanctions, order the conduct to cease, require corrective measures, and adopt other remedies. Both complainant and respondent are notified. CPC decisions are subject to appeal before the Administrative Court – Sofia City and, ultimately, the Supreme Administrative Court, which introduces a further procedural stage. Typical duration: CPC decisions commonly issue within several months to around a year, with judicial appeals adding further time.

Step 7, Parallel routes

Administrative enforcement is not the only avenue. A consumer protection complaint Bulgaria route through the KZP can run alongside the CPC process where consumers are harmed. Separately, affected parties may bring civil claims for damages before the courts, seeking compensation for losses caused by the misleading advertising. These routes complement, rather than replace, the CPC procedure, and the evidence prepared for the CPC complaint often supports a subsequent damages claim.

Required Documents and Evidence

The strength of any complaint rests on its evidence. The CPC assesses both the seriousness of the alleged conduct and the urgency of any interim relief on the basis of what the complainant puts before it. A complete, well-indexed bundle accelerates admissibility and signals a credible case. The table below sets out the documents and evidence for misleading advertising claim submissions, with practical notes on format, translation and authentication.

Two practical points bear emphasis. First, capture digital evidence early: online advertising can be altered or withdrawn, so screenshots with visible timestamps and archived web pages should be secured before filing. Second, handle confidentiality deliberately, flag genuinely sensitive commercial material in a confidential annex rather than assuming the CPC will infer sensitivity.

Timeline and Deadlines: What to Expect

Realistic expectations on timing prevent frustration and inform strategy. As the Step/Who/Duration table above indicates, the process moves through defined phases, but the total duration varies significantly with complexity. Admissibility review generally takes several weeks. The formal CPC investigation commonly runs a number of months, though technically complex matters, those requiring economic analysis or consumer surveys, extend well beyond that. A final CPC decision commonly issues within several months to around a year, and where a party appeals to the administrative courts, further time should be anticipated.

Two features of the timing deserve attention. The CPC retains discretion to extend investigations where the matter demands it, so published guideline periods are indicative rather than guaranteed. Conversely, urgent interim measures can be ordered rapidly, within days to a few weeks, where the complainant demonstrates urgency and likely harm. Complainants seeking to halt an ongoing campaign should therefore prioritise the interim measures request rather than wait for the final decision.

Costs, Fines and Remedies

Understanding the cost profile helps complainants and respondents alike. There is generally no official fee to lodge an administrative complaint with the CPC; the principal costs are legal representation and, where required, expert evidence. On the enforcement side, the Competition Protection Act provides for substantial administrative sanctions for serious breaches, and remedies extend beyond fines to corrective measures with real commercial impact.

Remedies fall into three broad categories. Administrative fines penalise the breach and deter repetition. Corrective measures, cease-and-desist orders, corrective advertising, product withdrawal, address the ongoing conduct and its market effects. Civil damages, pursued separately before the courts, compensate the injured party. The prospect of a misleading ads fine Bulgaria enforcers can impose at significant levels is, for advertisers, the clearest incentive to substantiate claims before publication.

Recent Developments to Note

Recent amendments to the Competition Protection Act carry several practical consequences for anyone managing misleading advertising complaints Bulgaria matters. First, the CPC’s powers have been reinforced and the definitions of prohibited conduct broadened, capturing a wider range of advertising and pricing practices, including comparative and price-based claims that can distort competition. Second, the framework for administrative sanctions has been updated, increasing the downside for advertisers who cannot substantiate their claims. Third, the reforms encourage greater use of interim measures, giving the CPC a faster tool to arrest harmful conduct while an investigation runs.

For competitors, the expanded scope may open the door to complaints about pricing claims that previously sat in a grey area. For advertisers, the message is prevention. The practical response is to audit live and planned campaigns now, retain contemporaneous evidence substantiating every factual and pricing claim, document the commercial rationale behind promotional pricing, and update compliance materials to reflect the current definitions. The CPC has signalled greater willingness to use its interim powers, so a defence pack assembled in advance is a sensible precaution rather than a luxury. Because the framework continues to evolve, advertisers should confirm the current wording of the CPA against the official State Gazette publication before relying on any specific provision.

Interim Measures and Enforcement

Interim measures unfair competition cases frequently turn on speed. The CPC may impose provisional measures either on its own motion or at a complainant’s request, where urgency and the likelihood of serious harm are demonstrated. These measures can require conduct to stop before the investigation concludes, invaluable where an ongoing campaign is causing continuing damage. The threshold is evidential: the complainant must show both that harm is likely and that it is urgent. A well-prepared interim measures request, supported by dated evidence of the offending advertising and a concise statement of the harm, can secure relief within days to a few weeks. The current emphasis on interim measures makes this a more prominent feature of enforcement than in previous years.

Common Pitfalls and Practical Tips

Well-founded complaints can still fail on avoidable errors. The recurring mistakes are procedural and evidential rather than substantive.

• Choosing the wrong forum. Filing a consumer-focused grievance with the CPC, or a competitor dispute with the KZP, wastes time. Match the harm to the mandate, competitor and market harm to the CPC, consumer harm to the KZP, or file both where warranted.
• Weak or late evidence capture. Online advertising can be altered or removed. Secure timestamped screenshots and archived pages before filing, not after.
• Vague allegations. A complaint that fails to specify the conduct, the legal basis and the relief sought risks rejection at admissibility. Be precise.
• Ignoring confidentiality. Failing to mark sensitive commercial material can expose it; over-marking everything undermines credibility. Flag only genuinely sensitive material in a confidential annex.
• Overlooking interim relief. Where a campaign is ongoing, not requesting interim measures means harm continues for months. Consider urgency at the outset.
• Neglecting parallel routes. The same conduct may support a KZP complaint and a civil damages claim. Preserve evidence with all routes in mind.

For deeper background on the framework, see the Global Law Experts Competition Law Bulgaria (overview). For the primary legal texts and procedural guidance, consult the official CPC website and the State Gazette (see the Sources section below).

Conclusion

Handling misleading advertising complaints Bulgaria authorities will scrutinise under the current framework demands precision at every stage, from choosing the correct forum, through assembling a complete and well-indexed evidence bundle, to timing an interim measures request while the harmful conduct is still live. The CPC’s enforcement powers, the level of available sanctions and its readiness to grant provisional relief reward complainants who prepare thoroughly and penalise advertisers who cannot substantiate their claims. Whether you are lodging an unfair competition complaint, a consumer protection complaint, or preparing to defend one, following the structured procedure, evidence checklist and timelines set out above will materially improve the outcome.

For advertisers, the safest position is prevention: audit now, document substantiation, and be ready to respond if a misleading advertising complaint lands.

Sources

1. Commission for Protection of Competition (CPC), official site
2. State Gazette (Държавен вестник), Official publication of laws
3. Parliament of the Republic of Bulgaria, legislation portal
4. Commission for Consumer Protection (KZP) Bulgaria
5. European Commission, DG Competition
6. EUR-Lex, Unfair Commercial Practices Directive (2005/29/EC)