A trademark is a form of commercial identification produced as a result of a contract with the government of a country or international organisation, which grants the right to use a name, slogan, logo or combination of words exclusively in a certain territory, provided that this use is limited to one or several fields, therefore preventing anybody else from using it for an unlimited amount of time. In exchange, detailled drawings of the design proposed must be registered and made public and rates must be paid periodically.
Logos are usually two-dimensional drawings, although three-dimensional objects are also accepted as logos.