Reviving criminal case dismissed earlier?

If the complainant has not bothered about the case for over a decade period then he cannot do anything about the case which has been disposed 

The appeal is barred by limitation

If that was dismissed on merits then you can file appeal only but it was dismissed due to default then you can file fresh complaint with condonation of delay application showing the reasons for delay,.

It is possible to reopen a criminal case, but the process varies by state law1234.To reopen a criminal case, you may need to1234:

• File a motion for appropriate relief in Superior Court, alleging compelling reasons for revisiting the case1.
• File a motion with the court in which you were convicted and obtain a favorable ruling from the judge2.
• Go for an appeal in any higher court against the judgement passed by the lower court4.