There are not any charges that automatically get expunged; when you are convicted, it stays on your record permanently. There is no drop-off or clean-up period. There are ways to clean up your record, but you have to affirmatively take an action to do that. There are some sex offenses that will allow you to file for a certificate of rehabilitation in order to get off of the registry and be deemed completely rehabilitated from the conduct of which you were convicted. However, doing so carries an even heavier burden than the filing of a motion for factual innocence, because you’re asking the court to deem you rehabilitated and issue a certificate.