There is a a listing of court decisions that discuss or are directly relevant to Creative Commons licenses. The decisions can come from any jurisdiction around the world. It is a list of decisions, not cases.
To add a new court decision to the list, create a new page here on the wiki and add a copy of the Case Law template and edit it to contain details of the case. If you are unfamiliar with creating pages, instructions are available There are also comprehensive guides and quick start instructions for working with wiki templates.
For cases taking place across multiple courts, add separate pages for each decision.