According to reports, furniture salesman Noah Morse has claimed that the singer "punched [him] forcefully in the mouth" during the attack outside Vancouver's Roxy nightclub on May 4, 2007.
In the lawsuit, filed at the Supreme Court of British Columbia, Morse accused Kroeger of expressing "no remorse" over the incident, which reportedly led him to lose consciousness and suffer a concussion.
He also claimed that the punch had caused him permanent scarring, headaches and "one deadened front tooth, dislodged upper front teeth and permanent discoloration of more front teeth".
Morse is seeking damages for reasons including loss of income and medical expenses.
Speaking to the Canadian Press, Vancouver police confirmed that they had investigated the incident but that Kroeger had not been charged and would likely never be charged.