That is a secondary, fictitious name that is different from the company's legal name, as sole proprietors and partnerships are certainly not registered as companies, and for that reason not needed to file entity development papers. For simply a yes or no on whether or not a name is distinguishable https://www.revistas-conacyt.unam.mx/therya/files/journals/1/articles/6262/submission/original/6262-19523-1-SM.html