The patent application time and the software copyright completion time are not the same day. Software copyright arises from the date of completion of software development. Regarding the date of approval of software copyright registration, the protection period for a natural person’s software copyright is the natural person’s lifetime and 50 years after his or her death, ending on December 31 of the 50th year after the natural person’s death; software that is jointly developed shall end on the last day of his or her death. December 31 of the 50th year after the death of the natural person. The protection period for software copyrights of legal persons or other organizations is 50 years, ending on December 31 of the 50th year after the software was first published. However, if the software has not been published within 50 years from the date of completion of development, this regulation will no longer protect it.