Well-known trademarks can still apply for certification, and the trademarks can be used normally, but they cannot be specifically marked as well-known trademarks when using them. Because well-known trademarks adopt the principle of case-by-case identification and passive protection. In other words, if a well-known trademark fails to meet the certification standards, it will become an ordinary trademark. The Trademark Office believes that the use of well-known trademarks for publicity and promotion will have an impact on the economic market. Therefore, it is prohibited to use well-known trademarks as gimmicks to attract consumers. Hope it will be adopted.