A trade mark application must indicate the classes of goods and services that the trade mark will be identified with.
There are 45 classes under the International Classification of Goods and Services for the Purposes of the Registration of Marks established by the Nice Agreement (“the Nice Classification”).
Some examples of classes under the Nice Classification are:
Pharmaceutical and veterinary preparations; sanitary preparations for medical purposes; dietetic food and substances adapted for medical or veterinary use, food for babies; dietary supplements for humans and animals ; plasters, materials for dressings; material for stopping teeth, dental wax; disinfectants; preparations for destroying vermin; fungicides, herbicides.
Machines and machine tools; motors and engines (except for land vehicles); machine coupling and transmission components (except for land vehicles); agricultural implements other than hand-operated; incubators for eggs; automatic vending machines.
Surgical, medical, dental and veterinary apparatus and instruments, artificial limbs, eyes and teeth; orthopaedic articles; suture materials.
Beers; mineral and aerated waters and other non-alcoholic beverages; fruit beverages and fruit juices; syrups and other preparations for making beverages.
Advertising; business management; business administration; office functions.
Insurance; financial affairs; monetary affairs; real estate affairs.
All the trade mark classes can be viewed here.