To enhance insurance coverage, most insurance companies review the past 39 months. Regarding a supposed "prior conviction," the law stipulates that any Misdemeanor DUI will remain on your record and be considered against you if it occurred within the last 7 years. Additionally, Felony Aggravated DUI charges are considered throughout one's lifetime. This implies that if you had a prior Felony Aggravated DUI 20 years ago and face a new Felony Aggravated DUI charge today, the new offense can be treated as a Second Felony Offense.