A: In trademark enforcement, we often encounter the situation of using multiple registered trademarks for the same commodity, which is allowed by law and has become an effective way for more and more businesses to protect the exclusive right to use trademarks. Article 4 of the Trademark Law stipulates: "If a natural person, legal person or other organization needs to obtain the exclusive right to use a trademark for the goods it produces, manufactures, processes, selects and distributes, it shall apply to the Trademark Office for trademark registration." Here, the trademark law does not prohibit the use of multiple registered trademarks on the same approved commodity. According to the law, an applicant can apply for registration of multiple trademarks and enjoy the exclusive right to use multiple trademarks. In other words, a subject can only register one registered trademark and use it on the approved goods; You can also register multiple trademarks at the same time or successively and use them on the same approved commodity. At present, many producers and operators mainly use one trademark and use different trademarks on different series of goods of the same commodity, thus subdividing the market and improving the market share. For example, Wuliangye Group, guided by Wuliangye trademark, has continuously introduced Wuliangye, Wuliangchun and other products to occupy different levels of markets.