In Kerly's Law of Trade Marks and Trade Names (11th edition) at page 166,the legal position with regard to 'person aggrieved' has been summarized thus The persons who are aggrieved are all persons who are in some way or the other substantially interested in having the mark removed where it is a question of removal from the register; including all persons who would be substantially damaged if the mark remained,and all trade rivals over whom an advantage was gained by a trader who was getting the benefit of a registered trade mark to which he was not entitled