infringement. According to today's headlines. Shanghai Gunai International Trading Co., Ltd. enjoys the exclusive license to use the trademark of single grain according to law. The company sued the defendant Guangzhou Single Grain Biotechnology Co., Ltd., and the defendant Shandong Lelishi Food Co., Ltd. highlighted the use of the word single dog food on the same commodity, which was similar to the plaintiff's trademark, which easily led to confusion and misunderstanding by consumers. The defendant infringed and was later removed from the shelves.