(a) A person engages in a deceptive trade practice when, in the course of his or her business, vocation or occupation, the person: (1) passes off goods or services as those of another; (2) causes likelihood of confusion or of misunderstanding as to the source, sponsorship, approval or certification of goods or services; (3) causes likelihood of confusion or of misunderstanding as to affiliation, connection or association with or certification by another; (4) uses deceptive representations or designations