“jkspace” has not been registered with the National Trademark Office, so it cannot be called a trademark. A trademark is a product or service used by producers and operators of goods on the goods or services they produce, manufacture, process, select or distribute. A sign with distinctive features, consisting of words, graphics, letters, numbers, three-dimensional logos, sounds, color combinations, or a combination of the above elements, used by providers in the services they provide to distinguish the source of goods or services. It is a product of modern economy. In the commercial field, trademarks include words, graphics, letters, numbers, three-dimensional logos and color combinations, as well as combinations of the above elements, which can be applied for registration as trademarks. Trademarks approved and registered by the state are "registered trademarks" and are protected by law. Trademarks protect trademark registrants by ensuring that they have the exclusive right to identify goods or services, or to license others to use them for remuneration.