Sec. 81a.

(1) Except as otherwise provided in this section, a person who assaults an individual without a weapon and inflicts serious or aggravated injury upon that individual without intending to commit murder or to inflict great bodily harm less than murder is guilty of a misdemeanor punishable by imprisonment for not more than 1 year or a fine of not more than $1,000.00, or both.

(2) Except as provided in subsection (3), an individual who assaults his or her spouse or former spouse, an individual with whom he or she has or has had a dating relationship, an individual with whom he or she has had a child in common, or a resident or former resident of the same household without a weapon and inflicts serious or aggravated injury upon that individual without intending to commit murder or to inflict great bodily harm less than murder is guilty of a misdemeanor punishable by imprisonment for not more than 1 year or a fine of not more than $1,000.00, or both.

(3) An individual who commits an assault and battery in violation of subsection (2), and who has 1 or more previous convictions for assaulting or assaulting and battering his or her spouse or former spouse, an individual with whom he or she has or has had a dating relationship, an individual with whom he or she has had a child in common, or a resident or former resident of the same household, in violation of any of the following, is guilty of a felony punishable by imprisonment for not more than 2 years or a fine of not more than $2,500.00, or both:

(a) This section or an ordinance of a political subdivision of this state substantially corresponding to this section.

(b) Section 81, 82, 83, 84, or 86.

(c) A law of another state or an ordinance of a political subdivision of another state substantially corresponding to this section or section 81, 82, 83, 84, or 86.

(4) As used in this section, “dating relationship” means frequent, intimate associations primarily characterized by the expectation of affectional involvement. This term does not include a casual relationship or an ordinary fraternization between 2 individuals in a business or social context.