Can you please explain the following the question? it is based on the New Zealand Trademark Act

Paddy has recently opened up a shoe shop, where he manufactures and sells mainly plastic shoes for outdoor wear. He names his shop 'Trocs.' The owners of 'Crocs' (a registered trade mark), a well-known global shoe manufacturing company, find out about Paddy's shop and threaten to bring legal action against Paddy, if he does not change the name of his shop. Required: Advise Paddy as to the likelihood of success of the owners of the 'Crocs' trademark.