Why didn't Yunnan Baiyao apply for a patent?

Because Yunnan Baiyao is a confidential component sponsored by the state, which is equivalent to state secrets, patent application is not a general application process. It is an internal application process, and all formulas are protected at the national level and reviewed by experts sent by the state. Finally, under the internal audit of the country, the patent application was successful! In foreign countries, it is because there are differences between foreign trademark law and domestic trademark law (and prejudice against China) that they are forced to disclose prescriptions and are allowed to enter foreign markets. Personal opinions are in brackets, hehe. ) So we made public the formula that has never been made public in China.