When does Usmin's patent expire?

You Siming's patent 203 1 165438+ expired on1October 4th. According to the related information, it is found that You Siming owns a patent called "WO 20 12060956A 1 Crystal Form of Antipsychotics", and the patent application date is 20165438+1October 4th. The publication date is May 20 12 10. According to the international patent law, the patent is valid for 20 years, that is, until 203 1 1 year1October 4.