US Trademark Search by Class Register: A Comprehensive Guide
The US trademark search by class register is an essential step in the trademark registration process. It helps you identify potential conflicts with existing trademarks and ensures that your mark is unique and available for registration. In this article, we will delve into the world of trademark classes, the importance of a comprehensive search, and the tools available to conduct a thorough search.
Understanding Trademark Classes

Trademarks are categorized into classes based on the goods or services they represent. The United States Patent and Trademark Office (USPTO) uses the Nice Classification system, which divides trademarks into 45 classes. Each class has its own unique identification number and encompasses a broad range of goods or services. For example, Class 25 covers clothing, footwear, and headwear, while Class 30 includes foodstuffs, tea, coffee, and sugar.
- Class 1: Chemicals used in industry, science, and photography
- Class 2: Paints, varnishes, and coatings
- Class 3: Cosmetics and cleaning products
- Class 4: Medical and veterinary preparations
- Class 5: Pharmaceuticals
- Class 6: Metal goods
- Class 7: Machinery
- Class 8: Hand tools
- Class 9: Electrical and scientific apparatus
- Class 10: Firearm and fireworks
- Class 11: Apparatus for lighting
- Class 12: Vehicles
- Class 13: Building materials
- Class 14: Jewelry
- Class 15: Musical instruments
- Class 16: Paper goods and printed matter
- Class 17: Rubber and plastics
- Class 18: Leather and goods made of leather
- Class 19: Building materials
- Class 20: Furniture
- Class 21: Kitchenware
- Class 22: Ropes and fiber
- Class 23: Yarns and threads
- Class 24: Textiles and apparel
- Class 25: Clothing, footwear, and headwear
- Class 26: Fabrics
- Class 27: Floor coverings
- Class 28: Toys
- Class 29: Meat, fish, poultry, and processed foods
- Class 30: Foodstuffs, tea, coffee, and sugar
- Class 31: Agricultural products
- Class 32: Beers, wines, and spirits
- Class 33: Perfumery, essential oils
- Class 34: Smoker's requisites
- Class 35: Advertising and business services
- Class 36: Insurance and financial services
- Class 37: Construction and repair services
- Class 38: Telecommunications
- Class 39: Transportation and storage services
- Class 40: Treatment of materials
- Class 41: Education and entertainment
- Class 42: Scientific and technological services
- Class 43: Services for the treatment of hair
- Class 44: Medical and veterinary services
- Class 45: Personal and legal services