The protection period of patent is 10-20 years, and the protection period of copyright is lifelong, or it expires in the 50th year after the author's death, which means that the protection period of copyright is longer than that of patent!
Then why is this?
1, patent right is industrial property right, and its field covers all reproducible products in industry; Copyright (copyright) is a part of personal rights.
In other words, inventions in the industrial field should not be used exclusively for too long, which will inevitably lead to monopoly, hinder innovation and even affect social development. The field of copyright is mainly limited to literature and art. Generally speaking, copyrighted works are unrepeatable works. If a work can be copied indefinitely, then we say that such a work is usually not suitable for copyright protection.
3. From this point of view, the extraordinary protection period in the field of literature and art is actually to encourage innovation, rather than relying on old capital to make no progress after inheriting the cultural heritage of our ancestors. Therefore, copyright is also called cultural property right.