Legal analysis: The patent protection period of drugs is 20 years. According to China's patent law, the protection period of an invention patent is 20 years. The research and development and production of patented drugs are restricted by intellectual property protection and cannot be copied. If you want to produce this drug, you must invest a lot of money in production, or wait until the end of the patent period. China has implemented a new drug patent law to protect intellectual property rights.
Legal basis: Article 26 of the Patent Law of People's Republic of China (PRC), when applying for a patent for invention or utility model, a request, specification, abstract, patent right and other documents shall be submitted.