Anyone who has old expired or unused (> 6 or < 6 years old) approved H1B petition in past can re-capture his/her reminder period by filling new cap-exempt petition.
References:
- If you have more than 6 years old H1B approved petition, are you eligible for cap exempt?
Yes. You are cap exempt until 6 years from date of expire. e.g if your petition approved on OCT-01-2008 and expired on SEP-30-2011, you are eligible for cap-exempt H1B till SEP-30-2017. - If you have been rejected during H1B interview at your home country, are you eligible for cap exempt?
Yes. Rejection on your H1B visa stamping has nothing to do with cap. - If you never used or stamp your H1B approved petition, are you eligible for cap exempt?
Yes.
References:
- http://h1bsupport.com/entry/how-to-u...ined-with-faqs
- http://forum. **** **.com/index.php?...empt-approved/
Note: This is an opinion not a legal advice.