Knowing the correct class of trademark under which your brand name to be registered is the key element in successful trademark registration. In all, there are 45 classes in Trademark, in simple terms these are 45 different business segments. These classes are broadly divided into 3 categories. Manufacturing: Class 1 to 34 Trading: Class 35 Services: Class 35 to 45 Identifying under which exact class your business/product/service falls is important. Wrong classification may lead to wrong trademark application and waste of time, money and losing of your brand name to your competitors.