Trademarks: What Is Use In Commerce?
When applying for trademark registration with a use-based application, it is necessary to provide information regarding use of the mark in commerce. While the lay definition of ‘commerce’ is simply business transactions, the legal definition provides specific requirements.
In Federal Trademark terms, commerce refers to that which is regulated by the U.S. Congress. This includes interstate commerce, which is any transaction between states. For example, using the mark in the ordinary course of trade across state lines or out of the country is satisfactory. Other forms of interstate commerce include advertising over the internet because it involves the transfer of information through communication networks that cross state lines and is available to a national audience. In addition, advertising through television qualifies as use in commerce even if produced and broadcasted within one state. This is because television is federally regulated.
Proof of use in commerce is accomplished with a sworn statement declaring how the trademark is used as well as the date of its first use. For more information regarding use in commerce or trademark applications in general, contact a qualified trademark attorney.

