Here are the grounds for an application to be opposed: 

• Proprietary rights
• Breach of copyright
• Generic marks
• Issues against morality and public policy
• Conflict with a personal name
• Conflict with a registered design
• Conflict with a trade name
• Registration under agent’s name
• Use of protected flags, state emblems and armorial bearings
• Functional marks
• Misleading/disparaging/deceptive marks
• Not distinctive marks
• Descriptive marks
• Use of a geographical indication
• Conflict with a notorious or famous mark