Terminology.

Terms such as "mark", "brand" and "logo" are sometimes used interchangeably with "trademark". "Trademark", however, also includes any device, brand, label, name, signature, word, letter, numerical, shape of goods, packaging, color or combination of colors, smell, sound, movement or any combination thereof which is capable of distinguishing goods and services of one business from those of others. It must be capable of graphical representation and must be applied to goods or services for which it is registered.

Specialized types of trademark include certification marks, collective trademarks and defensive trademarks. A trademark that is popularly used to describe a product or service (rather than to distinguish the product or services from those of third parties) is sometimes known as a genericized trademark. If such a mark becomes synonymous with that product or service to the extent that the trademark owner can no longer enforce its proprietary rights, the mark becomes generic.

A "trademark look" is an informal term for a characteristic look for a performer or character of some sort. It is usually not legally trademark protected and the term is not used in the trademark law.

Registration.

Some law considers a trademark to be a form of property. Proprietary rights about a trademark may be established through actual use of that trademark in the marketplace or through registration of the mark with the relevant trademarks office (or "trademarks registry") of a particular jurisdiction. In some jurisdictions, trademark rights can be established through either or both means. Certain jurisdictions generally do not recognize trademarks rights arising merely through use. If trademark owners do not hold registrations for their marks in such jurisdictions, the extent to which they will be able to enforce their rights through trademark infringement proceedings may be limited. In cases of dispute, this disparity of rights is often referred to as "first to file" (for example, register) as opposed to "first to use." Some countries, such as Germany, offer a limited number of common law rights for unregistered marks, where to gain protection the goods or services must first occupy a highly significant position in the marketplace — where this could be 40% or more market share for sales in the particular class of goods or services.

In the United States, the registration process includes several steps. First, the trademark owner applies with the United States Patent and TradeMark Office to register the trademark. About three months after it is filed, the application is reviewed by an examining attorney at the U.S. Patent and Trademark Office. The examining attorney checks for compliance with the rules of the Trademark Manual of Examination Procedure. This review includes procedural matters such as making sure the applicant's goods or services are identified properly. It also includes more substantive matters such as making sure the applicant's mark is not merely descriptive or likely to be confused with a pre-existing applied-for or registered mark. If the application runs afoul of any requirement, the examining attorney will issue an office action requiring the applicant to address certain issues or refusals before registration of the mark. If the examining attorney approves the application, it will be "published for opposition." During this 30-day period, third parties who may be affected by the registration of the trademark may step forward to file an opposition proceeding to stop the registration of the mark. If an opposition proceeding is filed it institutes a case before the Trademark Trial and Appeal Board to determine both the validity of the grounds for the opposition as well as the ability of the applicant to register the mark at issue.