My passport expired 3 years ago. What is the procedure to re-issue it?

You have to fill up the Passport Application Form and apply for "Re-issue of Passport". You can submit the filled in application form at a Passport Seva Kendra with in the jurisdiction of your Passport Office . You must carry original and self attested photocopy of your expired passport and proof of your address. Fresh police verification is initiated if the passport has expired more than three years ago. Hence, fresh police verification will be required in your case.