{copyright} concerns copyright issues, the "right to copy" or "right of ownership" of a product or idea
The copyright tag concerns Copyright issues. Copyright is the "right to copy" or "right of ownership" of a product or idea. The latter can be called "intellectual property". The Copyright is governed by two organizations, the World Intellectual Property Organization and the Buenos Aires convention. For (La)TeX is palced under the LaTeX Project Public License which is a free software license.
See also licensing.