Minn. Stat. § 333.28

Subject to the provisions of section 333.30 any person who shall (a) use without the consent of the registrant any mark on or in connection with rendering of services, selling, offering for sale, or advertising of any goods or services, which mark is identical to or so similar to the registered mark as to be likely to cause confusion or mistake on the part of a purchaser of the goods or services or to deceive such a purchaser as to the source or origin of the goods or services; or (b) reproduce, counterfeit, copy or colorably imitate any such mark and apply such reproduction, counterfeit, copy or colorable imitation to labels, signs, prints, packages, wrappers, receptacles, or advertisements intended to be used upon or in conjunction with the sale or other distribution of such goods or the sale or rendering of services: shall be liable to a civil action by the owner of such registered mark for any or all of the remedies provided in section 333.29 , except that under subsection (b) hereof the registrant shall not be entitled to recover profits or damages unless the acts have been committed with knowledge that such mark is intended to be used to cause confusion or mistake or to deceive.