How to Oppose a Trade Mark in Belgium (BOIP), 2026 Deadlines, Procedure, Costs and Evidence

Understanding how to oppose a trade mark is critical for any brand owner or in-house counsel who discovers a conflicting application published in the Benelux Trade Marks Register. In Belgium, the Netherlands and Luxembourg, trademark oppositions are handled exclusively by the Benelux Office for Intellectual Property (BOIP), and the window to act is narrow: opponents have just two months from the date a mark is published in the Benelux Trade Marks Journal to file. This guide walks through the complete BOIP opposition procedure, from standing and deadlines through evidence strategy, costs and appeals, so that counsel and brand owners can protect their rights efficiently under the rules in force in 2026.

Quick Facts, BOIP Opposition at a Glance

• Filing deadline. Two months from publication of the contested application in the Benelux Trade Marks Journal (BOIP).
• Where to file. BOIP, the sole authority for Benelux trademark opposition (boip.int).
• Official opposition fee. €1,045 per opposition (BOIP fee schedule).
• Primary grounds. Likelihood of confusion with an earlier Benelux, EU or international mark designating Benelux; reputation-based dilution; or an earlier right such as a trade name or copyright.
• Typical duration. BOIP aims to issue a decision within approximately twelve months of the opposition being deemed admissible.

Last reviewed: 27 July 2026.

Does the BOIP Cover Your Case? Benelux vs EU Trade Marks

Before you file an opposition, confirm that the contested mark is a Benelux trade mark application filed at BOIP. If the mark you want to challenge is a European Union Trade Mark (EUTM), the opposition must be filed at the EUIPO in Alicante instead. The two systems run in parallel and have different deadlines, fees and procedural rules. The table below highlights the key differences relevant to a Benelux trademark opposition versus an EUIPO opposition.

Bottom line: If the mark targets only Belgium, the Netherlands or Luxembourg, the BOIP opposition procedure applies. If it is an EU-wide filing, redirect your efforts to the EUIPO.

When and Who Can File an Opposition at BOIP

The two-month opposition window

Under the Benelux Convention on Intellectual Property (BCIP), the opposition period runs for exactly two calendar months starting from the first day of the month following the publication date of the contested application in the Benelux Trade Marks Journal. If, for example, a mark is published on 10 March 2026, the two-month window opens on 1 April 2026 and expires on 31 May 2026. Where the final day falls on a weekend or a public holiday recognised by BOIP, the deadline extends to the next working day. Missing this deadline is fatal, there is no mechanism to file a late opposition at BOIP.

Standing, who may file an opposition

Not everyone can oppose a Benelux trade mark application. BOIP limits standing to the following categories:

• Proprietors of earlier trade marks. This includes holders of earlier Benelux registrations, EU trade marks, or international registrations designating Benelux that have an earlier filing or priority date.
• Licensees. Exclusive licensees may oppose if authorised by the trade mark owner, or in certain circumstances independently where the owner fails to act.
• Holders of earlier rights. Owners of well-known marks (within the meaning of Article 6bis of the Paris Convention), trade names, copyrights, portrait rights or other earlier rights recognised under BCIP may also file.

The opponent must identify its earlier right precisely in the Notice of Opposition and provide proof that the right pre-dates the contested application.

How to Oppose a Trade Mark at BOIP, Step-by-Step Procedure

The trade mark opposition procedure at BOIP follows a structured sequence. Each phase has its own deadline, and missteps at any stage can result in the opposition being declared inadmissible or unfounded.

Step 1, Conduct a Benelux trademark search

Before filing, run a comprehensive Benelux trademark search through the BOIP online register and, where the earlier right is an EUTM, the EUIPO’s eSearch plus database. A thorough search serves two purposes: it confirms that your earlier right is still valid and in force, and it helps you assess the strength of the similarity argument. Check the goods-and-services classification carefully, similarity of marks alone is not enough if the classes do not overlap or relate.

Step 2, Draft the Notice of Opposition

The Notice of Opposition is the foundational document. BOIP provides a standard form on its website, but many practitioners draft a tailored submission. The notice must contain the following elements:

1. Opponent identification. Full name, address, legal form and contact details of the opponent (and representative, if applicable).
2. Earlier right details. Registration number, filing date, priority date (if any), and the goods/services relied upon.
3. Contested application details. BOIP application number, applicant’s name and the publication date in the Benelux Journal.
4. Grounds for opposition. A clear statement of the legal basis, typically likelihood of confusion under Article 2.14(1) BCIP, or dilution/unfair advantage for marks with a reputation.
5. Statement of facts. A concise narrative explaining why the contested mark conflicts with the earlier right, including an analysis of visual, phonetic and conceptual similarity, plus goods/services comparison.
6. List of exhibits. Number and describe every annex (registration certificates, proof of use, invoices, advertisements, survey results).
7. Relief sought. Refusal of registration in full, or in part for specific goods/services.

Red flags to avoid: vague grounds (“the marks are similar”) without factual support; reliance on an earlier right that has not been renewed; and failure to specify which goods or services are being targeted.

Step 3, File the opposition and pay the fee

BOIP accepts oppositions filed electronically through its online portal (My BOIP) as well as by post or fax. Electronic filing is strongly recommended because it generates an immediate receipt with a timestamp, which is essential if the deadline is approaching. The official BOIP opposition filing fee is €1,045. Payment must be received within the opposition period; if it arrives late, the opposition is declared inadmissible. BOIP accepts bank transfer and, through its portal, online payment.

Step 4, Cooling-off period

Once the opposition is deemed admissible, BOIP grants an initial two-month cooling-off period. During this phase the parties are encouraged to negotiate a settlement, for example, a coexistence agreement, a limitation of the goods/services list, or voluntary withdrawal. Both parties may jointly request an extension of the cooling-off period. If settlement is reached, the opponent withdraws and the opposition ends. If no settlement is possible, the cooling-off phase closes and the adversarial procedure begins.

Step 5, Adversarial phase: evidence and arguments

After the cooling-off period expires without resolution, BOIP opens the adversarial (or contradictory) phase. The typical sequence is:

1. Opponent’s arguments. The opponent files its substantive arguments and supporting evidence within a deadline set by BOIP (usually two months).
2. Applicant’s defence. The applicant responds, challenging the similarity claims and, if applicable, requesting proof of genuine use of the earlier mark in Benelux during the five years preceding the opposition.
3. Opponent’s reply. The opponent may file a reply, addressing the proof-of-use request and rebutting the applicant’s arguments.
4. Applicant’s rejoinder. A final round for the applicant to respond.

Each exchange is governed by a BOIP-set deadline. Extensions are possible but not automatic, a reasoned request must be filed before the deadline expires.

Step 6, BOIP decision

After the written rounds close, BOIP issues a reasoned decision. There is no oral hearing in BOIP opposition proceedings. The decision is communicated to both parties and published. BOIP’s overall target is to conclude opposition proceedings within approximately twelve months of admissibility, though complex cases may take longer.

How to Draft the Notice of Opposition, Practical Template

Below is a compact template that practitioners can adapt for BOIP filings. While BOIP’s own standard form must be used (or at minimum its mandatory data fields replicated), structuring the accompanying arguments in this format improves clarity and admissibility.

• Heading. “Notice of Opposition pursuant to Article 2.14 BCIP”, with date and BOIP reference number (if known).
• Section A, Opponent. Full legal name, registered address, national ID or company number, representative details and power of attorney.
• Section B, Earlier right. Registration number, type (Benelux / EUTM / international), filing and priority dates, goods and services list (Nice Classification).
• Section C, Contested mark. Application number, applicant identity, publication date, goods and services targeted.
• Section D, Legal grounds. Cite the specific BCIP provision(s) and summarise the factual basis: mark comparison (visual, phonetic, conceptual), goods/services comparison, relevant public, and if applicable, reputation and unfair advantage/dilution.
• Section E, Exhibits. Numbered list with brief descriptions (e.g., “Exhibit 1, Certified extract of Benelux registration no. 0XXXXXX”).
• Section F, Relief. State whether you seek refusal of registration for all or specific goods/services.

Drafting tip: Lead with the strongest ground. If you hold a registered mark in the same or closely related class, open with likelihood of confusion. Add dilution or bad faith as subsidiary grounds where the facts support them.

Evidence to Win: What Matters at BOIP

Filing a Benelux trademark opposition without robust evidence is one of the most common reasons oppositions fail. BOIP evaluates evidence on admissibility, relevance and weight. The following evidence matrix outlines the core categories, their purpose and practical authentication tips.

Key rule: All documents in a language other than Dutch, French or English must be accompanied by a certified translation. Undated or unauthenticated documents carry little weight. Industry observers note that BOIP decision-makers consistently favour evidence that is date-stamped, geographically specific to Benelux and presented in a logical, indexed format.

Costs: BOIP Fees, Counsel Costs and Value Analysis

Budgeting an opposition requires separating the official BOIP fees from the professional costs of legal representation.

Counsel fee ranges are market estimates and will vary by firm and complexity.

When to settle vs litigate: If the total projected cost of a contested opposition exceeds the commercial value of the brand overlap, or if a coexistence agreement can ring-fence the competing goods, settlement during the cooling-off period is often the most cost-effective outcome. Early engagement with the applicant through a letter before action (sent before or during the cooling-off phase) can significantly reduce litigation spend.

Common Procedural Pitfalls and Practical Tips

Even experienced practitioners encounter avoidable errors in the BOIP opposition process. The most common pitfalls include:

• Missing the two-month deadline. There is no grace period and no late filing mechanism. Diarise the deadline the moment the conflicting publication appears in the Benelux Journal.
• Paying the fee late. The €1,045 must be received (not merely sent) by BOIP within the opposition window. Allow processing time for bank transfers.
• Vague or unsupported grounds. Stating “the marks are confusingly similar” without a structured similarity analysis is likely to result in the opposition being found unfounded. Break the comparison into visual, phonetic and conceptual elements and address goods/services overlap head on.
• Failing to respond to a proof-of-use request. If the earlier mark has been registered for more than five years and the applicant requests proof of genuine use, the opponent must demonstrate real commercial use in Benelux within the relevant period. Failure to do so results in the opposition being rejected.
• Submitting untranslated or undated evidence. BOIP will disregard documents it cannot read or cannot situate in time.

Settlement tip: Use the cooling-off period constructively. A well-drafted coexistence agreement, limiting the contested mark to specific classes, territories or trade channels, can end the dispute without a decision and preserve commercial relationships.

Outcomes, Appeals and Next Steps After a BOIP Decision

After the adversarial phase closes, BOIP issues one of three outcomes:

• Opposition upheld (in full). The contested application is refused for all goods and services targeted in the opposition.
• Opposition upheld (in part). The application is refused only for certain goods or services.
• Opposition rejected. The application proceeds to registration.

Either party may appeal the decision. Under the BCIP, appeals against BOIP opposition decisions are heard by the Benelux Court of Justice in Luxembourg, or in certain circumstances by the competent national courts in Belgium, the Netherlands or Luxembourg. The appeal must generally be lodged within two months of notification of the BOIP decision. Appeal proceedings involve a fresh examination of the facts and law, and legal representation is typically required. The likely practical effect of an appeal is an additional twelve to eighteen months before a final ruling.

If the opposition is rejected and the mark proceeds to registration, the opponent may still pursue invalidity or cancellation proceedings post-registration, though that is a separate procedure with its own costs and evidentiary requirements.

When to Escalate from Opposition to Invalidity or Cancellation

Opposition and cancellation serve different purposes. An opposition prevents a mark from being registered in the first place; cancellation (or invalidity) removes a mark that has already been entered on the register. If you missed the two-month opposition deadline, or if new grounds emerge after registration, cancellation is the fallback route. BOIP handles cancellation actions for Benelux marks, while national courts retain jurisdiction over certain invalidity claims based on earlier rights such as trade names or copyrights. The grounds for cancellation largely mirror those for opposition, but the evidentiary burden can be heavier because the registered mark enjoys a presumption of validity.

Early indications suggest that practitioners increasingly use the trade mark opposition procedure as a first line of defence and reserve cancellation for situations where the opposition window has passed or where additional grounds, such as non-use revocation after five years, become available.

Conclusion, Your Opposition Checklist

Knowing how to oppose a trade mark at BOIP, and executing each step within the strict procedural deadlines, is the difference between protecting a brand and watching a conflicting registration proceed unchallenged. The core checklist is straightforward: monitor the Benelux Journal, diarise the two-month window, file the opposition with the €1,045 fee, draft a precise Notice supported by authenticated evidence, and engage constructively in the cooling-off phase before committing to a full adversarial procedure. For complex multi-ground oppositions or cases involving reputation claims, the value of experienced Benelux IP counsel cannot be overstated. Early, well-prepared action remains the single most reliable way to win a BOIP opposition.

Sources

1. Benelux Office for Intellectual Property (BOIP)
2. Belgian Federal Public Service Economy
3. EUIPO, Opposition Process
4. World Intellectual Property Organization (WIPO)
5. Benelux Convention on Intellectual Property / Benelux Organisation