The business scope of trademark registration companies mainly involves domestic and international trademark registration, changes, transfer, licensing, renewal, reexamination, response, disputes, infringement litigation of trademarks, patents, and copyrights, as well as the application for famous trademarks, well-known trademark application, China's renowned brand trademark registration, China's high-quality brands, China's superior products, dual guarantee of quality and reputation demonstration units, national standard qualified products that consumers can trust, consumer-assuring products for shopping in China, nationwide trusted quality products, and state-authoritative tested quality qualified products.