In applying a trademark, understanding what goods or services they are offering should come first. This is important because the rights you receive in trademarks are limited to the specific goods or services you offer. In other words, the list of goods and services is an important aspect of a trademark application as the scope of the applicant’s rights in the trademark is defined and limited by the scope of the classes that you list in your application. This list is also known as the specification. The advantage of having classes is that you can have very similar, even identical trademarks in different industries which do not result in the end user being confused. For example, you have Dove chocolate and Dove soap. You’ve got Delta Airlines, Delta faucets, and there are a lot of other Deltas out there. The reason these trademarks can co-exist is because they’re in vastly different markets. If somebody in the market is going to buy body soap, he’s not going to confuse that with the name of a chocolate maker. The Classes are numbered 1 through 45. Classes 1 to 34 relate to goods, and Classes 35 to 45 relate to services. An important aspect of using classes is the ability to exclude Classes when there is a conflict with another similar trademark, or when an examiner rejects your trademark because it is descriptive of its good or services.