Except as expressly excluded in subparagraphs 3. and 5., nothing in this paragraph shall prevent the registration of a mark used by the applicant which has become distinctive of the applicant's goods or services. The department may accept as prima facie evidence that the mark has become distinctive, as used on or in connection with the applicant's goods or services, proof of substantially exclusive and continuous use thereof as a mark by the applicant in this state or elsewhere for the 5 years before the date on which the claim of distinctiveness is made; or
Fla. Stat. § 495.021