Rhode Island General Laws Title 6. Commercial Law--General Regulatory Provisions § 6-2-8. Cancellation

(i) That the registered mark has been abandoned;

(ii) That the registrant is not the owner of the mark;

(iii) That the registration was improperly granted;

(iv) That the registration was fraudulently obtained; or

(v) That the registered mark is so similar, as to be likely to cause confusion or mistake or to deceive, to a mark registered by another person in the United States patent office, prior to the date of the filing of the application for registration by the registrant under this chapter, and not abandoned; provided, however, that should the registrant prove that he or she is the owner of a concurrent registration of his or her mark in the United States patent office covering an area including the state, the registration under this chapter shall not be cancelled;