Article 13

1.   Where a trade mark is registered in the name of the agent or representative of a person who is the proprietor of that trade mark, without the proprietor's consent, the latter shall be entitled to do either or both of the following:
(a) oppose the use of the trade mark by his agent or representative;
(b) demand the assignment of the trade mark in his favour.

2.   Paragraph 1 shall not apply where the agent or representative justifies his action.