A more thorough explanation:

Definition: To modify or repeal a law in whole or in part by passing a new law. This term is used in civil law.

Example: The government decided to obrogate the old tax law and replace it with a new one.

Explanation: In this example, the government passed a new law to modify or repeal the old tax law. This is an example of obrogation because the old law was replaced by a new one.