Trademarks may consist of national or foreign geographical indications, provided they are sufficiently arbitrary and distinctive with respect to products or services to which they apply, and that their use is not likely to cause confusion or association with respect to the origin, source, qualities or characteristics of the goods or services for which the marks are used. The nature of the product or service does not become an obstacle to registration of a mark. The use of a mark to market a product or service is optional and needs no prove prior to use to request or obtain the registration of a trademark.