Copyright protects literary or artistic works such as books, music, paintings, sculptures, movies, software, databases, advertisements, etc. It protects the form in which an idea is expressed, not the idea itself.
The creator of a work decides when and how such work may be used. The extent of copyright protection varies from one country to another.
In Switzerland, copyright is automatically acquired upon creation of the work.
It is, however, essential to keep a record of dated evidence of the creation in order to be able to show one’s copyrights in case of unauthorized copying.