Trademark classification under the Madrid Protocol is not handled the same way it is in a standard U.S. application, and the difference creates a set of traps that are worth understanding before filing. The core issue is that classification is controlled by the International Bureau, and the USPTO is expressly prohibited from changing it.
In a Section 66(a) application, the USPTO examining attorney cannot reclassify goods or services into a different class than the one assigned in the international registration. The IB's classification is the classification. Period.
How This Differs from Domestic Practice
In a standard U.S. trademark application, the examining attorney can require classification amendments. If the applicant has placed goods or services in the wrong class, the examiner will identify the issue and require a correction. The applicant can move goods and services between classes, split an application into multiple classes, or adjust the identification to fit the correct classification. The process is collaborative and correctable.
In a Section 66(a) application, that flexibility does not exist on the USPTO's end. The examining attorney can require that the identification of goods and services be more specific or that it accurately describe what the applicant is actually offering, but any such refinement must stay within the class the IB has already assigned. If the IB put the goods in Class 25, the USPTO cannot move them to Class 14, even if Class 14 is clearly more appropriate under U.S. classification practice.
Where the Problem Originates
Classification in an international application is determined at the WIPO level, based on the Nice Classification system. The IB examines the application and assigns classes based on its own classification practices, which may differ from how the USPTO would classify the same goods or services.
Different trademark offices within the Madrid system apply the Nice Classification with varying degrees of strictness and with different interpretations of which class a particular good or service belongs in. What the IB accepts as Class 41 may be something the USPTO would put in Class 35 or Class 42. If the classification assigned by the IB is wrong from a U.S. practice standpoint, the USPTO examining attorney cannot fix it.
The Practical Consequences
A misclassified international registration creates several downstream problems.
In examination, the USPTO examiner can require a more specific identification within the IB's assigned class, but cannot require reclassification. If the class is wrong, the identification can be refined but not moved. The result may be a refusal, or a registration in a class that does not accurately reflect what the mark is being used on, which can create problems in enforcement, licensing, and maintenance.
How to Avoid the Problem
The solution is to get classification right at the WIPO stage, before the application is transmitted to designated countries for examination. This means working carefully on the identification of goods and services in the international application, understanding how the IB is likely to classify each item, and anticipating any divergence between IB classification practice and USPTO classification practice before the application is filed.
For goods and services that are likely to be classified differently by different offices, it is worth consulting with counsel who is familiar with both U.S. and WIPO classification practices before filing. It is also worth reviewing the IB's classification decision carefully before the application proceeds, since the window to address a misclassification is narrow once the IB has assigned classes and forwarded the application to designated countries.
In some cases, where accurate classification is genuinely uncertain or where U.S. protection is the highest priority, a direct U.S. application may be more appropriate than a Section 66(a) application for the U.S. designation, precisely because a direct application allows the full range of USPTO examination practice to apply, including classification correction.
The Bottom Line
The IB controls classification in a Madrid international registration, and the USPTO cannot override it. Getting classification right before the international application is filed is the only reliable way to avoid ending up with a registration that covers the wrong class, in a form that neither the applicant nor the USPTO can correct after the fact.
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