035 — Class 35 includes mainly services rendered by persons or organizations principally with the object of: 1. help in the working or management of a commercial undertaking, or 2. help in the management of the business affairs or commercial functions of an industrial or commercial enterprise, as well as services rendered by advertising establishments primarily undertaking communications to the public, declarations or announcements by all means of diffusion and concerning all kinds of goods or services.

038 — Class 38 includes mainly services allowing at least one person to communicate with another by a sensory means. Such services include those which: 1. allow one person to talk to another, 2. transmit messages from one person to another, and 3. place a person in oral or visual communication with another (radio and television).

040 — Class 40 includes mainly services not included in other classes, rendered by the mechanical or chemical processing or transformation of objects or inorganic or organic substances. For the purposes of classification, the mark is considered a service mark only in cases where processing or transformation is effected for the account of another person. A mark is considered a trade mark in all cases where the substance or object is marketed by the person who processed or transformed it.

041 — Class 41 covers mainly services rendered by persons or institutions in the development of the mental faculties of persons or animals, as well as services intended to entertain or to engage the attention.

042 — Class 42 includes mainly services provided by persons, individually or collectively, in relation to the theoretical and practical aspects of complex fields of activities; such services are provided by members of professions such as chemists, physicists, engineers, computer programmers, etc.