South Dakota Mark Registration Application is an application that allows businesses to register their marks with the state of South Dakota. It is a way for businesses to protect their trademarks and distinguish them from competitors. The application includes a form to submit information about the mark, including a description, date of first use, and class of goods or services associated with the mark. It also includes a filing fee, which must be paid before the application will be accepted. There are two types of South Dakota Mark Registration Application — Principal Register and Supplemental Register. The Principal Register is the primary form of mark registration in the state, and provides legal protections for registered marks. The Supplemental Register is a secondary form of registration that grants fewer legal protections, but is still useful for distinguishing marks from competitors.