The Nice Classification: The International System of 45 Trade Mark Classes
The Nice Classification is an international system, administered by WIPO under the Nice Agreement, that sorts goods and services into 45 numbered classes (classes 1 to 34 for goods, 35 to 45 for services). Trade marks are registered against specific classes, so class selection defines the scope of protection.
When you register a trade mark, you are not protecting a word or logo in the abstract. You are protecting it in relation to particular goods and services, and the system most of the world uses to describe those goods and services is the Nice Classification. It groups everything that can be sold or offered into a set of numbered classes, and your application is filed against the classes that fit your business. This pillar explains what the Nice Classification is, why classes matter so much to the scope of your rights, what a specification is and how to draft one sensibly, the sub-class overlays that some offices add on top of Nice, and how to approach class selection. It is general information, not legal advice, and where genuine local nuance arises the sensible step is to consult a vetted local firm.
What the Nice Classification is
The Nice Classification is an international classification of goods and services established by the Nice Agreement Concerning the International Classification of Goods and Services for the Purposes of the Registration of Marks, concluded in 1957 and revised several times since. It is administered and published by the World Intellectual Property Organization (WIPO) in Geneva, and the periodic revisions to its content are agreed by the Nice Union's Committee of Experts, made up of the contracting parties, rather than set by WIPO alone. The system is widely used: many countries are formal parties to the Nice Agreement, and many further offices apply the classification in practice even without being signatories, according to WIPO's published information on the Nice system. Because membership and adoption evolve, you should check WIPO's current materials, or ask local counsel, before assuming any particular country follows Nice exactly.
The classification divides goods and services into 45 classes. The split is fixed and definite: classes 1 to 34 cover goods and classes 35 to 45 cover services, so there are 34 goods classes and 11 service classes. Each class is described by a class heading and supported by an alphabetical list of specific entries, together with explanatory notes that clarify what belongs where. WIPO issues updated versions periodically, a new edition roughly every few years with annual updates in between, so the precise wording, and occasionally the placement of an item, can change over time. For that reason the safe practice is to work from the current edition published on WIPO's site, or by the relevant national office, rather than from memory or an older list.
It is worth being clear about what the classification does and does not do. It is an administrative framework for organising and searching trade mark records. It does not, by itself, decide whether two marks conflict or how broad your protection is in a dispute; those questions turn on substantive trade mark law in each territory. The classification makes filing and searching orderly; it does not replace legal judgement about scope.
Why you register in specific classes
A trade mark right is bounded by the goods and services it covers. You do not own a brand name across the whole economy; you own it for what you have registered it against. Class selection is the mechanism that sets those boundaries, which is why it is one of the most consequential decisions in any application.
Several practical consequences follow. Protection generally extends to the goods and services in your registration and, depending on local law, to closely related ones, but it does not automatically reach unrelated sectors. A clothing brand registered only in the relevant goods class may have little to say about an unrelated software product using a similar name, unless local law and the facts support a broader claim. Conversely, filing too narrowly can leave obvious extensions of your own business unprotected. The aim is to match the classes to what you actually sell and to what you can realistically foresee selling, without straying into areas you have no genuine intention to use.
Fees in most systems are structured around the number of classes, so each additional class typically adds cost. This creates a natural tension between breadth of protection and budget, and it is part of why class selection rewards thought rather than a scattergun approach. Because the precise fee structure varies by office and changes over time, this guide does not state figures; confirm current fees with the relevant national office or WIPO before filing.
A further point matters in several jurisdictions: use. Some systems can eventually cancel a registration, in whole or in part, for the classes or goods where the mark has not been put to genuine use within a defined period. Filing for classes you never use can therefore leave parts of a registration vulnerable to challenge. The detail, the length of any grace period, what counts as use, and how partial cancellation works, varies considerably between territories, so treat it as a local-law question.
Specifications: describing your goods and services
Within each class you do not simply tick the class number; you set out a specification, the actual list of goods or services you are claiming. The specification is the precise statement of what the mark covers, and its drafting can matter as much as the choice of class.
There are broadly two approaches, and offices differ in how they treat them. One is to use the class heading or other broad terms, aiming for wide coverage. The other is to list specific items. Broad terms can look attractive because they appear to claim more, but some offices require terms to be clear and precise and may object to vague or over-general wording, and a broad specification can also expand exposure to non-use challenges later. Specific terms give certainty about what is covered but can be narrower than intended if drafted carelessly. The right balance depends on the office and on your commercial plans.
Many offices and WIPO publish pre-approved or pick-from lists of acceptable terms, sometimes drawn from harmonised databases, which can speed up examination and reduce the risk of an objection to wording. Using accepted terms where they fit your business is often the path of least resistance. Where your goods or services do not map neatly onto a standard term, careful bespoke drafting, ideally with local input, is worth the effort, because an ambiguous specification can be queried during examination or read narrowly in a dispute.
A specification that is broader than your real and intended business is not a free option. It can attract examination objections, increase cost if it pushes you into extra classes, and expose the registration to partial cancellation for non-use down the line. A specification that is too narrow can leave clear gaps. As with class selection, the discipline is to describe what you sell and plausibly intend to sell.
Sub-class overlays in some jurisdictions
The Nice Classification sets the top-level structure, but it does not dictate everything about how each office runs classification internally. Some jurisdictions layer their own sub-class system on top of Nice, and this can change classification strategy in those markets.
China is a well-known example. The Chinese trade mark office applies the Nice classes but subdivides them into national sub-classes, and in practice protection and conflict assessment can operate at the sub-class level rather than across the whole Nice class. The consequence often reported is that registering in a class without covering the relevant sub-classes can leave gaps, so specification drafting in such systems needs to account for the local sub-class structure rather than relying on the Nice class heading alone. Because the detail of any sub-class regime, and how strictly it is applied, is a matter of local practice that can change, this is exactly the kind of point to confirm with a vetted local firm before filing. For market-specific context, see our guide on how to register a trade mark in China.
China is not the only territory with classification quirks, and even offices that follow Nice closely can differ in examination practice, acceptable terms, and how broadly they read a specification. The general lesson is that the Nice number is a shared starting point, not a guarantee of identical treatment everywhere.
How to think about class selection
Class selection works best as a deliberate exercise rather than an afterthought. A workable approach is to start from what the business actually does, list the core goods and services, and map each to its Nice class. From there, consider near-adjacent activities that are a realistic part of your plans, for example the retail or online-sales services that often sit in a different class from the goods themselves, or packaging, accessories, or related services that customers would associate with the brand.
Two recurring traps are worth naming. The first is assuming a single class covers a business that spans both a product and a service; a company that makes a physical product and also offers it through an app or a subscription may need more than one class to protect both sides. The second is over-claiming, padding the application with classes the business has no intention of using, which adds cost and can create non-use vulnerability without adding meaningful protection.
It also pays to think across borders early. If you expect to expand internationally, the classes and specification you choose at home can shape later filings, including through the centralised route described in our overview of the Madrid Protocol, where, as a general rule, the goods and services in an international application cannot be broader than those in your home, or basic, mark. Getting the home specification right therefore has downstream consequences for international coverage, and the Madrid guide carries the detail. For how classification plays out in particular markets, see our guides on registering a trade mark in the European Union, the United States, India, and Türkiye.
Goods classes and service classes at a glance
The table below sets out the headline split. It is a simplified orientation, not a substitute for the official class list and explanatory notes, which you should consult for any actual filing.
| Feature | Goods classes | Service classes |
|---|---|---|
| Coverage | Products (mostly tangible goods and prepared substances) | Activities performed for others |
| Position in the system | Classes 1 to 34 | Classes 35 to 45 |
| Typical examples of scope | Manufactured items, foodstuffs, chemicals, apparel, machinery | Retail and business services, financial, technology, education, professional services |
| Common pitfall | Splitting related products across more classes than expected | Forgetting that selling or distributing goods can be a separate service class |
| Where the detail lives | WIPO and national class lists, headings and explanatory notes | WIPO and national class lists, headings and explanatory notes |
The practical takeaway from the split is that goods and the services around those goods often fall in different classes, so a brand that both makes and sells, or both produces and services, frequently needs cover on both sides.
Common pitfalls to plan around
Three issues recur often enough to flag. First, under-classification: choosing too few classes, or a specification that misses an obvious arm of the business, can leave real activities unprotected. Second, over-classification: padding with unused classes adds cost and can expose the registration to non-use challenges where local law allows them. Third, ignoring local overlays and practice: relying on the Nice class heading alone in a market that uses sub-classes, or that examines wording strictly, can produce gaps you did not intend, which is precisely where local guidance earns its keep.
None of these is a reason to be timid about filing. They are reasons to plan the class list and the specification with care, anchored to what the business genuinely does and realistically intends. Where a specific market raises genuine local nuance, on sub-classes, on acceptable terms, or on use requirements, the most reliable step is to consult a vetted local firm before the application is finalised.
Key takeaways
The Nice Classification is the international framework, administered by WIPO under the Nice Agreement, that sorts goods and services into 45 numbered classes (classes 1 to 34 for goods and 35 to 45 for services) and underpins how trade marks are filed and searched in most of the world. Because a trade mark right is bounded by the goods and services it covers, class selection and the drafting of your specification largely define the scope of your protection. Some offices add sub-class overlays, China being a well-known example, so the Nice number is a shared starting point rather than a promise of identical treatment everywhere. Choose classes against what you actually sell and plausibly intend to sell, draft specifications with care, and for current class editions, fees, and market-specific rules rely on WIPO's official resources and on local counsel.
This guide is general information, not legal advice, and IPEnvoy is an information and referral platform, not a law firm.