At a glance: Computer software is protected by copyright in most countries, including the United States and throughout the European Union. Protection generally applies automatically to original source code, object code, and other copyrightable elements of a program, without requiring registration.
However, software copyright does not protect the underlying ideas, algorithms, or functionality themselves. Registration can provide additional legal and enforcement benefits in certain countries, particularly the United States. This guide explains what software copyright covers, who owns the code, and when registration may be worthwhile.