A more thorough explanation:

Definition: Jus in re (pronounced "yoos in ray") is a legal term that means having a complete and perfect right to a property that is valid against anyone in the world. It is also known as jus in rem or jura in rem. This means that the person who has jus in re can use, sell, or transfer the property without any interference from others.

Example: If you own a house, you have jus in re over that property. This means that you have the right to use, sell, or transfer the property without any interference from others. No one can take away your right to the property as long as you have jus in re.

Another example: A company that has a patent for a product has jus in re over that patent. This means that the company has the right to use, sell, or transfer the patent without any interference from others. No one can make, use, or sell the product without the company's permission.

The examples illustrate the definition of jus in re by showing that the person or company who has jus in re has complete control over the property or patent. They can use, sell, or transfer it without any interference from others. This means that they have a complete and perfect right to the property or patent that is valid against anyone in the world.