How long is the patent protection period of patented drugs? After the patent protection of drugs expires, is it possible for us to copy or take other measures?

The research and development and production of patented drugs are restricted by intellectual property protection, so it is impossible to copy them. To produce them, you must invest a lot of money or wait until the patent period expires. Before China entered WTO, it was the cheapest to see a doctor in China. Drugs can be copied at will, but since there are rules of the game, they must be observed. Starting from 1993, China began to implement a new drug patent law to protect intellectual property rights and protect foreign drugs to varying degrees. From 1950 to now, most of the new drugs listed in China are imitation products, and generic drugs account for more than 97%. It is necessary to explain the concept of patent protection period of drugs here. Generally speaking, from the date of patent application and approval, it takes 8- 12 years from patent acquisition to drug listing, so the patent period of a new drug after listing is actually only 6- 10 years, usually 6 or 7 years. 2005-2007 will be the peak period for the expiration of patented drugs. At present, Chinese pharmaceutical companies have entered the climax of applying for patent imitation drugs. After China's entry into WTO, generic drugs will be impossible to continue. Therefore, the protection of intellectual property rights will affect the development of domestic generic drug manufacturers.