Copyright is when you or someone else makes a piece of work (picture, art piece, design, or any kind of software) they get a copyright when its in a tangible stage. However, if they release it into the public most file their copyright with the government.
This is a copyright that has expired, or was created with public money, or donated by the author
an example is a site by a university
Freeware copyright is software that can be downloaded for free but is not allowed to share
an example is itunes
this is software that is free temporarily but not permanently
An example are all 30-day trials
All Rights Restricted
With this copyright you have to purchase it to use it and sign or check off on a agreement.
An example of this is pages
This copyright is software that includes its source code so it can be changed or added on to