Trademark inquiry refers to the procedure that an applicant for trademark registration inquires about trademark registration in person or by entrusting a trademark agent to find out whether the trademark he intends to apply for registration is the same as or similar to the trademark registered or being registered by others. How to inquire about trademarks Before applying for trademark registration, the applicant should first inquire about trademarks, mainly to inquire whether there is a prior conflict of trademark registration rights. There are two kinds of inquiries: 1, and the online trademark inquiry system (a trademark inquiry system opened to the outside world by the State Trademark Office) is free. 2. The internal trademark inquiry system (that is, the company's internal trademark inquiry system) is free. Remarks: China Trademark Network Inquiry System can only inquire about the trademark files published by the Trademark Office. The Trademark Office has not publicly applied for trademarks in the last six months or so, and the internal trademark inquiry system and China Trademark Network Inquiry System cannot inquire. Classification query: trademark query commodity categories (category I to 34, ***34) Category I: chemicals used in industry, science, photography, agriculture, horticulture and forestry; Raw synthetic resin; Raw plastic materials; Fertilizer; Fire extinguishing composition; Quenching and welding preparation; Preserve chemicals used in food; Tanning material; Adhesives for industry. The second category: pigments, varnishes and natural paints; Rust inhibitors and wood preservatives; Colorant; Mordant; Natural resin raw materials; Painters, decorators, printers and artists use metal foil and powder. The third category: bleach and other laundry materials; Preparation for cleaning, polishing, decontamination and grinding; Soap; Spices, essential oils, cosmetics, shampoos; Toothpaste. The fourth category: industrial oils and fats; Lubricant; A composition for absorbing, wetting and binding dust; Fuel (including engine fuel) and lighting materials; Candles and wicks for lighting. Category 5: drugs, medical and veterinary preparations; Medical and health preparations; Nutritional foods and substances for medical or veterinary use, baby food; Dietary supplements for humans and animals; Gypsum and dressing materials; Materials for filling cavities, tooth wax; Disinfectant; Preparation for killing harmful animals; Bactericide, herbicide [4] The sixth category: ordinary metals and their alloys; Metal building materials; Movable metal buildings; Metal materials for railway tracks; Non-electrical cables made of ordinary metals; Hardware, metal hardware; Metal tube; Safe box; Ore. Seventh category: machines and machine tools; Motors and engines (except land vehicles); Machine couplings and transmission parts (except land vehicles); Non-manual farm tools; Incubator; Vending machine category 8: hand tools and appliances (manual); Knife, fork and spoon tableware; Side weapon; Razor. Category IX: scientific, navigation, surveying, photography, film, optics, weighing instruments, measuring tools, signals, inspection (supervision), rescue (rescue) and teaching devices and instruments; Devices and instruments for processing, converting, transmitting, accumulating, regulating or controlling electric power; Equipment for recording, communicating and replaying sound or images; Magnetic data carrier, recording disk; Optical discs, DVD discs and other digital storage media; Mechanical structure of coin-operated starter; Cash register, computing machine, data processing device, computer; Computer software; Fire extinguishing equipment. Class 10: surgical, medical, dental and veterinary instruments and appliances, artificial limbs, artificial eyes and dentures; Orthopedic supplies; Suture material; Special treatment device for the disabled; Massager; Baby care instruments, appliances and supplies; Tools, appliances and articles for sexual life. Class XI: lighting, heating, steam generation, cooking, refrigeration, drying, ventilation, water supply and sanitation equipment. Class 12: means of transport; Land, air and sea transportation. Class 13: firearms; Weapons and ammunition; Explosives; Fireworks. Fourteenth category: precious metals and their alloys, jewels, precious stones and semi-precious stones; Clocks and timekeeping instruments. Category 15: musical instruments. Sixteenth category: paper and cardboard; Printed matter; Books; Binding supplies; Photos; Stationery and office supplies (except furniture); Stationery or household adhesives; Artists or painting materials; Brush; Educational or teaching supplies; Plastic paper, plastic film and plastic bag for packaging. Category 17: unprocessed and processed rubber, gutta percha, gum, asbestos, mica and substitutes of these materials; Molded plastic products for production; Packaging, filling and insulating materials; Non-metallic hoses and non-metallic hoses. Category 18: leather and artificial leather; Fur; Luggage and backpacks; Umbrella and sunshade; Walking stick; Whip, harness and saddle; Animal collar. Class 19: non-metallic building materials; Non-metallic rigid pipe for building; Asphalt, asphalt; Movable non-metallic buildings; Non-metallic tablet computer. Category 20: furniture, mirrors, photo frames; Wood, cork, reed, rattan, wicker, horn, bone, ivory, whale bone, shell, amber, mother of pearl, sepiolite products, substitutes of these materials or plastic products. Category 2 1: household or kitchen utensils and containers; Combs and sponges; Brushes (except brushes); Brush making materials; Cleaning utensils; Steel velvet; Unprocessed or semi-processed glass (except architectural glass); Glassware, porcelain and pottery not included in other classes. Category 22: cables, ropes, nets, tents, awnings, tarpaulins, sails, bags and bags (not included in other categories); Gaskets and filling materials (except rubber or plastic); Textile fiber raw materials and their substitutes. Class 23: Yarn and thread for textile. Category 24: fabrics and their substitutes; Household textiles; Curtains made of textiles or plastics. Category 25: Clothing, shoes and hats. Class 26: Lace and embroidery, lace and braid; Buttons, collar hooks, decorative needles, sewing needles; Artificial flowers. Category 27: carpets, mats, mats, linoleum and other floor materials; Non-woven curtain wall. Class 28: game equipment and toys; Sports and sporting goods; Christmas tree decorations. Category 29: Meat, fish, poultry and game; Gravy; Pickled, frozen, dried and cooked fruits and vegetables; Jelly, jam, preserves; Eggs; Milk and dairy products; Cooking oil and grease. Category 30: coffee, tea, cocoa and coffee substitutes; Rice; Edible starch and sago; Flour and cereal products; Bread, cakes and sweets; Frozen food; Sugar, honey, syrup; Fresh yeast, baking powder; Salt; Mustard; Vinegar and sauce (seasoning); Spices; Ice cubes. Category 31: cereals and agricultural, horticultural and forestry products that do not belong to other categories; A living animal; Fresh fruits and vegetables; Seeds; Plants and flowers; Animal feed; Malt. Class 32: beer; Non-alcoholic beverages such as mineral water and soda water; Fruit drinks and juices; Syrups and other beverage preparations. Category 33: Alcoholic beverages (except beer). Category 34: Tobacco; Smoking set; Matching trademark inquiry service categories (categories 35 to 45, *** 1 1) Category 35: advertising; Commercial operation; Business management; Office affairs. Class 36: insurance; Finance; Monetary affairs; Real estate affairs. Class 37: building construction; Repair; Install the service. Class 38: Telecommunications. Class 39: transportation; Commodity packaging and storage; Travel arrangements. Lesson 40: Material Handling. Class 4 1: education; Provide training; Entertainment; Cultural and sports activities. Category 42: Scientific and technical services and related research and design services; Industrial analysis and research; Design and development of computer hardware and software. Category 43: Providing catering services; Temporary residence. Class 44: medical services; Veterinary services; Health and beauty services for people or animals; Agriculture, horticulture and forestry services. Category 45: legal services; Private and social services provided by others to meet personal needs; Services to protect property and personal safety.