How to Search China Trademark Classes Correctly

Introduction

Foreign businesses entering China often treat trademark filing as a formality: pick a class, submit the application, move on. That approach is risky. China runs on a first-to-file system, which means the applicant who files first generally wins, regardless of who used the mark first elsewhere in the world. Within that system, the class and sub-class you select determines whether your registration actually protects your product or service, or whether it quietly fails to cover what your business does.

This guide walks through how China’s trademark classification system works, how to search it correctly using CNIPA’s official tools, the most common classification mistakes foreign applicants make, and how to build a classification strategy that holds up over time. It also flags a structural gap in the free search system that most applicants never learn about until it costs them.

1. Why China Trademark Class Search Matters More Than You Think

A First-to-File System Raises the Stakes

Under Article 22 of China’s Trademark Law, an applicant must file using the goods and services classification table, and may cover multiple classes in a single application. Because China does not require proof of prior use to establish rights, the applicant who files correctly and first is the one who typically secures the mark. A class search is not a courtesy check. It is how you find out, before you spend money and lock in a filing date, whether your intended class already has a conflict.

Registration Volume Keeps Climbing

CNIPA’s own year-end report for 2025 shows the scale of the environment applicants are filing into: the office registered 4.206 million trademarks in 2025 alone, while maintaining an average examination cycle of about four months and an examination, opposition, and review accuracy rate above 97 percent [1]. Nationally, China’s cumulative valid trademark registrations reached roughly 50.8 million by the end of 2025 [1]. Searching a class in this environment means searching against a genuinely large and fast-moving dataset, which is exactly why precision in how you search matters as much as whether you search at all.

A Narrow Class Choice Can Leave Your Core Business Unprotected

Even when volume and rejection risk are set aside, there is a second, quieter risk: registering successfully in the wrong or an incomplete set of classes still leaves your actual commercial activity unprotected. Article 23 of the Trademark Law is explicit on this point, and it is the legal foundation for nearly every classification dispute discussed later in this guide.

Trademark Law of the People’s Republic of China, Article 23: “Where it is necessary to obtain the exclusive right to use a registered trademark for goods outside the scope of approved use, a separate application for registration shall be filed.”

In practice, this means your trademark right stops exactly at the edge of the class and goods you registered for, even if your business has since expanded. A class search done correctly at the outset, and revisited as your product line grows, is what keeps your registered rights aligned with what you actually sell. For a broader walkthrough of the registration process this class search feeds into, see YCIP’s China trademark registration guide for foreign companies.

2. Understanding China’s Trademark Classification System: The Legal Foundation

The Statutory Basis

Two provisions of the Trademark Law form the backbone of the entire classification system. Article 22 sets the filing obligation:

Trademark Law of the People’s Republic of China, Article 22: “An applicant for trademark registration shall, according to the prescribed classification table of goods, file the application for registration with reference to the classes of goods and the designated goods bearing the trademark. An applicant for trademark registration may, through one registration application, apply for registration of the same trademark in different classes of goods.”

Read together, Articles 22 and 23 tell you everything you need to know about why classification precision matters: Article 22 obligates you to classify correctly at filing, and Article 23 confines your resulting rights strictly to what you classified. There is no gap-filling doctrine that extends protection to goods you forgot to list.

45 Classes, Two Broad Groups

China applies the Nice Classification, 12th Edition (2025 text), effective from January 1, 2025. It organizes all goods and services into 45 classes: Classes 1 through 34 cover goods, and Classes 35 through 45 cover services. This structure is shared internationally, so the class numbers themselves will look familiar to applicants who have filed in the US, EU, or elsewhere.

The Similar Group Layer That Foreign Applicants Miss

What is not familiar, and what trips up most foreign applicants, is the layer beneath each class: the similar group (类似群) system. CNIPA does not judge similarity between goods or services primarily at the class level. It judges similarity at the similar group level. Two products sitting in the same class can belong to different similar groups and be treated as entirely unrelated for search and examination purposes. Conversely, goods in different classes can occasionally be linked if they fall under cross-referenced similar groups. Searching only by class number, without drilling into similar groups, is the single most common and most expensive mistake foreign applicants make in China. For the official reference tables behind this structure, applicants can consult the Similar Goods and Services Distinction Table, based on the Nice Classification 12th Edition (2025 text), and CNIPA’s Goods/Services Search module, both covered in more detail in YCIP’s complete guide to China trademark search.

3. Step-by-Step: How to Conduct a China Trademark Class Search Correctly

Step 1: Access the Official Search Portal

Start at the China Trademark Office’s online query system, accessible at wcjs.sbj.cnipa.gov.cn, or reach it through the National Intellectual Property Public Service Platform under Information Services, then Trademark, then Trademark Search. Avoid third-party lookup sites for anything beyond a quick preliminary check; official data should always be your final reference point. YCIP’s guide to mastering CNIPA trademark search walks through the interface in more depth.

Step 2: Choose the Right Query Module

The portal has five core modules, and picking the correct one matters:

• Similar Trademark Search: searches by image or text elements for identical or similar marks on the same or similar goods.
• Comprehensive Trademark Search: searches by trademark number, name, or applicant name for full record details.
• Trademark Status Search: tracks a mark’s procedural status by application or registration number.
• Trademark Gazette Search: searches published electronic trademark announcements.
• Goods/Services Search: searches classification information by international class, similar group, product name, or product code. This is the module a class search actually runs through.

Step 3: Map Your Product to China’s Class Structure

Begin with the class you already use in your home market, such as the US or the EU, and then map it onto China’s equivalent class and, critically, its similar group. The mapping is rarely one-to-one; product descriptions that read as identical in English can land in different similar groups depending on how CNIPA has categorized them.

Step 4: Search by Class Plus Similar Group

Enter the proposed trademark name, select the international class, and then narrow the query by similar group number. The more specific your input, the more precise and useful the result set. Stopping at the class level alone will return a search that looks clean but misses the conflicts that actually matter.

Step 5: Analyze the Results Carefully

Review the output for three things: identical marks already registered on the same or similar goods, similar marks with earlier filing or priority dates in the same class or similar group, and well-known marks, which are not bound by class limits and can block an application even in an unrelated category. If any of these appear, it is worth checking your brand name availability before proceeding; see YCIP’s guide on whether your brand name is available in China for a fuller availability framework.

The Blind Spot Every Applicant Should Know About

CNIPA’s free public search system has a data lag of roughly three to six months. Applications filed recently may not yet be visible in the database you are searching. This is not a flaw unique to China; most trademark offices have some version of this lag. But it means a “clean” search result is never a guarantee, only a snapshot. For marks that carry meaningful commercial value, applicants typically supplement the free search with a professional search through paid databases and experienced counsel, rather than relying on the public portal alone. YCIP’s trademark and copyright services team runs this type of supplemental clearance search as a standard part of filing strategy.

4. The Cost of Getting It Wrong: Common Classification Mistakes

Mistake 1: Confusing a Product With a Service

One of the most frequent errors is misreading whether an offering counts as goods or a service. Computer software, for example, is a product. It belongs in Class 9 (similar group 090120), not Class 42, which covers software development and other technology services. Filing a packaged software product under Class 42 protects the wrong thing entirely.

Mistake 2: Misreading a Digital Business Model

Live-streaming is another common trap. Applicants often default to Class 38 (telecommunications), assuming that anything delivered over the internet belongs there. In practice, live-streaming for entertainment or education purposes typically falls under Class 41, similar group 4102, because the substance of the service is entertainment or training delivery, not the transmission infrastructure itself.

Mistake 3: Registering Only the Core Product Class

A business that manufactures, processes, and licenses retail sale of a product, but registers only the class covering the raw product itself, can find that its trademark right does not extend to how the business actually operates. If a company’s model includes cultivation, processing, and branded retail licensing but the registration covers only Class 31 (fresh produce), the mark may offer no protection against a dispute involving Class 35 (advertising, retail promotion services), because that layer of the business was never registered. Cases like this are a recurring theme in Chinese trademark litigation commentary and underscore why classification should track the full business model, not just the product on the shelf.

Mistake 4: Forcing a New Product Into the Wrong Existing Class

Emerging product categories that blend functions, for example a combined home-security and wearable health-monitoring device, do not always map cleanly onto an existing class description. Applicants sometimes force these products into the nearest familiar category, such as general household electronics, rather than the class that actually governs monitoring instruments and devices. When a competitor holds rights in the more precise category, this mismatch can expose the applicant to a cross-class infringement dispute rather than protecting the product as intended.

Mistake 5: Searching Only at the Class Level

This is the mistake underlying most of the others: relying on the class number alone and skipping the similar group search entirely. As explained in Section 2, CNIPA’s similarity analysis operates primarily at the similar group level. A class-only search will miss conflicts that a similar-group search would catch, and it will also miss opportunities in the same class that are actually available.

For applicants who have already received an office action citing classification or similarity issues, YCIP’s guide to China trademark rejection reasons and solutions and guide to understanding a CNIPA rejection notice outline the response options and timelines in detail.

5. Strategic Classification: Beyond the Basics

Build in Three Tiers: Core, Related, and Defensive

A durable classification strategy typically works in three layers. The core class covers your primary product or service, for example Class 25 for an apparel brand or Class 43 for a restaurant group. The related classes cover activities that sit directly upstream or downstream of the core business, such as Class 24 (textiles) for an apparel company, or Class 35 (advertising and retail promotion) where relevant. The defensive classes are the periphery: categories where a copycat is most likely to piggyback on your brand name even though you have no immediate plans to operate there.

Cover Every Relevant Similar Group Within Your Target Classes

Within each class you file in, aim to secure at least one item in every similar group that plausibly touches your business. Leaving a similar group uncovered inside your own class is exactly the gap a competitor can register into with a confusingly similar mark, without technically infringing your narrower registration.

File Broader “Umbrella” Terms Where It Makes Sense

Beyond your immediate product description, consider adding broader umbrella terms within the same similar group, even for items you do not plan to use in the near term but that carry defensive value. This is a standard technique for keeping pace with product line expansion without having to refile every time your offering evolves.

Should You Register Class 35?

Class 35, covering advertising, business management, and office functions, is sometimes informally described as an all-purpose class, though that reputation oversimplifies how it actually works. CNIPA’s own guidance on Class 35 registration and use makes clear that its core purpose is protecting services provided for others, such as advertising agencies, franchise management, and retail platforms, rather than a company simply marketing its own goods [2]. Filing volume in this class has been substantial: in 2022, Class 35 applications reached roughly 970,000, close to 13 percent of all domestic trademark filings that year and nearly double the volume of the next most-filed class [3].

In practice, Class 35 is worth serious consideration if your business operates an e-commerce platform, retail storefront, or franchise network; provides advertising or marketing planning services; works as an import or export agent; or runs a branded licensing or franchise program. A pure manufacturer that only makes and sells its own goods, without providing services to others, is not strictly required to file Class 35, though many still choose to file it defensively given how frequently it becomes a point of dispute.

Track Classification Version Updates

China implemented the Nice Classification, 12th Edition (2025 text) on January 1, 2025, and CNIPA continues to refine the underlying similar group tables on an ongoing basis. When conducting a class search, check both the current classification and any predecessor classes your product category may have previously fallen under. Eyewear, for example, has historically touched both Class 9 and Class 10 depending on the specific item, so a thorough search checks the historical filing record across both.

Building a classification strategy from scratch, or auditing one that already exists, is exactly the kind of work best handled with professional support. YCIP’s trademark and copyright services and consultation and litigation support teams regularly build core-related-defensive filing plans for foreign brands entering China; see also the defensive trademark strategies guide for a deeper look at this layer specifically.

6. Key Statistics: China Trademark Landscape at a Glance

National Registration Volume and Examination Efficiency

Class 35 Filing Concentration

Class 35 figures reflect 2022 filing data reported in Chinese IP practitioner analysis [3]; applicants should treat this as directional evidence of how contested the class is, not a current-year figure.

Conclusion: Get Your Classification Right the First Time

A China trademark class search is not a box-ticking exercise before filing. It is the mechanism that determines whether your eventual registration actually matches what your business does, and whether it holds up when a competitor tries to register something close to it. The core lesson across every section above is the same: search at the similar group level, not just the class level, and build your classification around your full business model, not just your flagship product.

Given the 3-6 month blind spot in the free public search system, the real cost of a wrong class choice under Article 23’s strict scope rule, and how contested categories like Class 35 have become, most foreign businesses find it worthwhile to have a professional clearance search and classification strategy done before filing rather than after a rejection or a dispute. YCIP’s trademark team has filed and managed classification strategies for foreign brands across dozens of industries entering the China market.

Ready to get your classification right before you file? Contact YCIP’s trademark team for a classification review, or request a quote for your trademark application to get started.

Frequently Asked Questions

What is the difference between a Nice class and a Chinese similar group?

China uses the 45-class Nice Classification framework, but layers a second system, similar groups (类似群), underneath each class. CNIPA’s examiners judge whether goods or services are similar primarily at the similar group level, not the class level. Searching only by class number is one of the most common and costly mistakes foreign applicants make. See Section 2 above for the full explanation.

How do I check if a trademark is already registered in China?

Use the Comprehensive Trademark Search module on the official China Trademark Office portal at wcjs.sbj.cnipa.gov.cn, entering the mark name and, where relevant, the international class. For classification-specific detail, the Goods/Services Search module lets you search by class, similar group, product name, or product code. Remember the free system has a data lag of roughly three to six months.

What happens if I register my trademark in the wrong class in China?

Two outcomes are possible. The application can be rejected outright during examination. Or, if it does register, Article 23 of the Trademark Law confines your exclusive right strictly to the approved class and goods, meaning your actual products or services outside that scope remain unprotected, and open to a competitor filing on the same name in the classes you left uncovered.

Do I need to register Class 35 for my business in China?

It depends on your business model. CNIPA guidance is clear that Class 35’s core purpose is protecting services provided for others, not a company advertising its own goods. If you run an e-commerce platform, retail storefront, franchise network, or advertising business, Class 35 is worth serious consideration. A pure manufacturer selling only its own products is not strictly required to file it, though many file it defensively given how often it becomes a point of dispute.

What is the latest version of the China trademark classification?

The current version is the Nice Classification, 12th Edition (2025 text), effective from January 1, 2025. Applications filed on or after that date apply the new edition. Applicants should check CNIPA’s updated Similar Goods and Services Distinction Table for the current groupings, and cross-check historical filings under prior editions for categories that have shifted over time.

Disclaimer

This article is provided for general informational purposes only and does not constitute legal advice. Trademark classification outcomes depend on the specific facts of each application and current CNIPA examination practice. For advice on a specific filing, consult a qualified trademark professional.

References and Further Reading

1. “2026年全国知识产权局局长会议工作报告（摘编）” [2026 National IP Directors’ Conference Work Report Summary], China National Intellectual Property Administration (CNIPA). https://www.cnipa.gov.cn/art/2026/1/7/art_53_203564.html. Source Role: primary government statistical report. Support Status: supports. Relevance: source for 2025 national trademark registration volume, cumulative valid registrations, examination cycle, and accuracy rate figures cited in Sections 1 and 6.
2. “关于第35类服务商标申请注册与使用的指引” [Guidelines on the Application, Registration and Use of Class 35 Service Trademarks], China National Intellectual Property Administration (CNIPA). https://www.cnipa.gov.cn/module/download/down.jsp?i_ID=180686&colID=66. Source Role: primary government guidance document. Support Status: supports. Relevance: source for the official definition and scope of Class 35, used in Section 5.
3. “第35类商标：是’万能’神话还是认知误区？” [Class 35 Trademarks: Universal Myth or Misconception?], China IP Lawyer Network (ciplawyer.cn), https://www.ciplawyer.cn/articles/151920.html. Source Role: industry practitioner analysis. Support Status: partial. Relevance: source for 2022 Class 35 filing volume and share of total domestic applications, cited as directional evidence in Section 6.
4. Trademark Law of the People’s Republic of China, Articles 22 and 23 (national legislation), full text available via CNIPA and the National People’s Congress official legislative database. Source Role: primary statute. Support Status: supports. Relevance: legal basis for classification obligations and scope of registered rights, cited in Sections 1 and 2.
5. “WIPO IP Facts and Figures 2025” (China data), World Intellectual Property Organization. https://www.wipo.int/web-publications/ip-facts-and-figures-2025/zh/introduction.html. Source Role: international comparative statistics. Support Status: partial. Relevance: supplementary international context on China’s trademark filing activity relative to global volumes.