Yes, it can. Here are some grounds for opposition:
- Proprietary rights;
- Conflict in registration, another company has registered the trademark at an earlier date;
- The mark is too descriptive;
- The mark is not distinctive enough;
- The mark is misleading, deceptive or disparaging;
- The mark is functional;
- Breach of copyright;
- Well-known mark, rights under Article 6bis of the Paris Convention;
- rights under Article 6ter of the Paris Convention (protection of armorial bearings, flags and other State emblems);
- The mark is generic;
- The mark consists of a geographical indication;
- The mark is scandalous, against public policy or principles of morality.