Trademark Classes, Explained: The Nice Classification System

Trademark rights aren't granted for a name in the abstract — they're granted for a name used on specific goods or services. The system that organizes those goods and services is called the Nice Classification, and understanding it is the difference between a registration that actually protects your business and one that doesn't.

What the Nice Classification is

The Nice Classification is an international system, maintained under a treaty administered by the World Intellectual Property Organization (WIPO), that sorts every category of goods and services into 45 numbered classes. Classes 1 through 34 cover goods (physical products); classes 35 through 45 cover services. The USPTO uses this same system, so every US trademark application is filed against one or more of these 45 classes.

Why the class matters as much as the name

Trademark protection is scoped to the class (and, more precisely, the specific goods/services description within it) that you file under. Register your name in Class 25 (clothing) and it does essentially nothing to stop someone from using the same name for a software product in Class 42 — those are considered unrelated fields, and customers aren't likely to confuse a t-shirt company with a SaaS company. Filing in the wrong class is functionally the same as not filing at all for the business you're actually running.

Classes that come up constantly for tech and online businesses

• Class 9 — Downloadable software, mobile apps, AI software, computer hardware. The default class when your product itself is treated as a good.
• Class 42 — Software as a service (SaaS), platform-as-a-service, and technology/scientific services. The default class when your product is delivered as an ongoing service.
• Class 35 — Business services, advertising, and (notably) online retail/marketplace services.
• Class 41 — Education, training, and entertainment services.
• Class 43 — Restaurant, hospitality and food/accommodation services.

It's common — not exceptional — for a single product to need two classes. A SaaS product with a downloadable companion app might file in both 9 and 42, for instance. This is exactly why picking classes correctly, rather than guessing one, is worth the extra care.

How to figure out which classes you need

1. Describe what you actually sell in plain language — a downloadable product, an ongoing service, a physical good, or some combination.
2. Match that description to the closest Nice class headings; the USPTO publishes an ID Manual of pre-approved goods/services descriptions that map cleanly to classes.
3. Check whether your business spans more than one class — many do, especially software companies that sell both a product and a service.
4. Only include classes you're using now or have a genuine, concrete intent to use soon. Padding an application with classes you might enter someday adds cost without adding real protection until you actually use the mark there.

Classes and cost are directly linked

The USPTO charges its base filing fee per class, not per application — so every additional class is an additional charge, roughly $350 under the current fee schedule (see the official USPTO fee page for exact current figures). We break down the full cost picture in how much does a trademark cost.

Classes and clearance searches go together

When you search for conflicts, restricting the search to your intended classes (plus closely related ones examiners commonly compare) gives you a much more useful signal than an unfiltered name search. Our guide to doing a trademark search covers this in more depth.