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 applications for famous trademarks, well-known trademarks, China's famous brand trademark registration, China's high-quality brands, China's quality products, double guarantee of quality and reputation demonstration units, national standard qualified products that are reliable in quality, consumer-confidence products for放心shopping in China, national quality trustworthy products, and state-authorized inspected quality qualified products.