This paper comes to the following conclusion: Article 20 of the Fair Trade Act does not exclude registered marks; the function of marks lie in distinguishing goods or services and not in indicating their sources; the character of the distinguishing ability needs not to be “distinctive”; the Fair Trade Act complements the Trademark Act in that it covers the confusion about the goods or services per se and the legal subject to which they belong; The Fair Trade Commission should be able to refuse to take complaints from resourceful undertakings, who can protect their rights by civil actions. Dilution is not covered by Article 20, and is subject to Article24 of the Fair Trade Act.