A trademark is a type of intellectual property consisting of a recognizable sign, design, or expression which identifies products or services of a particular source from those of others, although trademarks used to identify services are usually called service marks. The trademark owner can be an individual, business organization, or any legal entity. A trademark may be located on a package, a label, a voucher, or on the product itself.

The symbols ™ (the trademark symbol) and ® (the registered trademark symbol) can be used to indicate trademarks; the letter is only for use by the owner of a trademark that has been registered.