A trademark is a recognizable sign, design or expression that identifies a product or service from a particular source. However, trademarks used to describe services are often called service marks. A trademark owner can be a person, business organization or any legal entity. A trademark can be placed on a package, on a label, on a receipt, or on the product itself. For the sake of corporate identity, trademarks are often displayed on company buildings. It also covers all promotional works such as web pages, business cards, vehicle wraps, company signs.