In your trademark registration application, if you claim that your business sells goods/services in a certain class, when it actually doesn't, you could wind up losing all rights in your trademark.
Similarly, if your business sells goods/services in multiple classes, and not all of those classes are specified on your registration application--that's another way you could wind up losing all rights in your trademark.
Some people believe they can “cut corners” on government fees by failing to mention all classes of goods/services that their business sells on the registration application. This approach is almost always a bad idea. You really don't want to spend dozens of years in marketing and advertising--building up your brand, and then suddenly lose all rights in your trademark. For many companies, their trademark is their most valuable asset.
Similarly, if your business sells goods/services in multiple classes, and not all of those classes are specified on your registration application--that's another way you could wind up losing all rights in your trademark.
Some people believe they can “cut corners” on government fees by failing to mention all classes of goods/services that their business sells on the registration application. This approach is almost always a bad idea. You really don't want to spend dozens of years in marketing and advertising--building up your brand, and then suddenly lose all rights in your trademark. For many companies, their trademark is their most valuable asset.