Enforcement Rules of the Trademark Act Article 33
Where the consent to the application for trademark registration had been given pursuant to the provisos of Subparagraphs 10 to 15 of Paragraph 1 of Article 30 of the Act, if afterward the person who consented to such earlier filed trademark files an application for registration of a trademark which shall not be registered as prescribed in Subparagraph 10 of Paragraph 1 of Article 30 of the Act in relation to such earlier filed trademark, the later filed trademark shall not be registered unless the proprietor of such earlier filed trademark consents to the application for registration of such later filed trademark.