There is no remedy in Pennsylvania that will allow you to relitigate a case that old. Your best bet may be to apply for a Governor's Pardon. This is a long and involved process but if you have been crime free for 20 years and this is the only crime against you would have a decent chance of earning a pardon. Once the case is Pardoned it would be the same as an acquittal and you could have it expunged from your record.
Answered on Oct 01st, 2020 at 11:41 AM