The following can be grounds for opposition:
- proprietary rights
- breach of copyright
- the mark is not distinctive
- the mark is descriptive
- the mark is generic
- notorious or well-known mark
- protection of armorial bearings, flags and other State emblems
- the mark is against public policy or principles of morality
- the mark consists of a geographical indication
- representation of the proprietor of the mark
- the mark is of such a nature as to deceive the public