First of all, let’s introduce the once sensational case “Huang Daoyi” sued “Huang Daoyi”. A rare lawsuit requesting confirmation of non-infringement was recently filed in the Beijing No. 1 Intermediate People's Court. Hong Kong Wong Tao-Yi Pharmaceutical Holdings Co., Ltd. requested the court to confirm that the company did not infringe the trademark rights of Hong Kong Wong Tao-Yi Huoluo Oil Co., Ltd. Wong Tao-Yi Huoluo Oil Co., Ltd. is a well-known time-honored enterprise in Hong Kong, founded by Hong Kong man Huang Dao-yi in the 1950s. In 1999, Huang founded a new company, Hong Kong Huang Daoyi Pharmaceutical Holdings Co., Ltd., to independently operate the sales business of Huang Daoyi Huoluo Oil in the mainland, and obtained a pharmaceutical product registration certificate issued by the State Food and Drug Administration. In October 2003, when Hong Kong Daoyi Pharmaceutical Company applied for the renewal of its registration certificate, it encountered various interferences from Huang Daoyi Huoluo Company, claiming that the new company had infringed the trademark rights of the old company, resulting in the renewal procedures still not being completed, so the new company So he filed a lawsuit to confirm non-infringement. Litigation to confirm non-infringement is a common lawsuit internationally, but it is relatively rare in our country. In recent years, some people have begun to use this form of litigation. Last year, the Beijing No. 1 Intermediate People's Court ruled on a lawsuit to confirm non-infringement. It is reported that Huang Daoyi is now in his 80s and has one son and seven daughters. Both businesses are controlled by the Huang family. There has been discord between the families in recent years, and there have been many lawsuits over the company's trademark and management issues. Due to family disagreements, internal strife began to occur within Huang Daoyi's company, resulting in family division. The company's trademark issue has not been reasonably resolved, which eventually led to the inability of Hong Kong Huang Daoyi Pharmaceutical Holdings Co., Ltd. to continue operating. From then on, Hong Kong Huang Daoyi Huoluo Oil was owned by the mainland. The sales business was forced to stop. Therefore, if mainland customers want to buy authentic Hong Kong Wong Dao Yik active oil, they can only buy it in Hong Kong. Another way to buy it is through Shenzhen merchants, who purchase the goods from Hong Kong Wong Dao Yik Company and sell it in the mainland.