An application to register a trademark shall be refused based on Article 4(1)(x) of the Japanese Trademark Law where the trademark is identical, or similar, to an unregistered well-known trademark and the goods or services with respect to which the trademark applied is used are identical, or similar, to those with respect to which the well-known trademark is used.
Even if goods or services for a trademark applied are not identical, or similar, to those for a well-known trademark, the application shall be refused based on Article 4(1)(xv) of the Law on condition that it is likely to cause confusion.
