It's a common misconception that solopreneurs or freelancers cannot use a business or made-up name. In fact, there's a distinction between a "business name" and a "company name." Only companies registered in the commercial register can use a company name. However, all other businesses, self-employed individuals, and freelancers can use creatively modified names or a freely invented name as their business name. But it's important to note that the first and last name must always be included on business letters and in the imprint to clarify that the business name is not a "company" legally.