At its most basic level an injunction is a court order instructing someone to stop engaging in a particular type of behavior. Now, while an injunction can be sought as a legal remedy in a variety of situations perhaps the most significant would be injunctions for protection.
Being convicted of a criminal charge and receiving a particularly harsh sentence is one of the most consequential events that can happen to a person. However, this doesn’t have to be the end of your story. If you believe there were specific problems in your trial that contributed to your conviction then your next step should be contacting an appellate attorney to find out what options are available to you.