Conn. Gen. Stat. § 35-18g
The Secretary of the State shall cancel from the register, in whole or in part, (1) any registration concerning which the Secretary of the State receives a voluntary request for cancellation thereof from the registrant or the assignee of record, accompanied by a recording fee of twenty-five dollars; (2) all registrations granted under this chapter and not renewed in accordance with the provisions hereof; (3) any registrations concerning which a court of competent jurisdiction orders cancellation after finding (A) that the registered mark has been abandoned; (B) that the registrant is not the owner of the mark; (C) that the registration was granted contrary to the provisions of section 35-18b; (D) that the registration was obtained fraudulently or in bad faith; (E) 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 and Trademark Office prior to the date of first use in Connecticut by the registrant hereunder, and used in Connecticut and not abandoned, provided if the registrant proves that the registrant is the owner of concurrent registration of a mark in the United States Patent and Trademark Office covering an area including this state, the registration under this chapter shall not be cancelled for such area of the state; (F) that the registered mark has become so descriptive as to be incapable of distinguishing the registrant; (G) that another person has rights in the state of Connecticut superior to those of the registrant; or (H) in the case of a certification mark, that the registrant (i) does not control, or is not able legitimately to exercise control over, the use of such mark, or (ii) engages in the production or marketing of any goods or services to which the mark is applied, or (iii) permits the use of the certification mark for purposes other than to certify, or (iv) discriminately refuses to certify or continue to certify the goods or services of any person who maintains the standards or conditions which such mark certifies; or (4) any registration concerning which a court of competent jurisdiction orders cancellation on any other ground.
Conn. Gen. Stat. § 35-18g
(1967, P.A. 689, S. 7; P.A. 93-152, S. 18; P.A. 96-180, S. 115, 166.)