Can I apply for H1B extension of UNUsed H1B VISA after expiration

I got H1B VISA Stamped in passport on March 6th, 2008 and expired on September 30,2010. In I-797B has mentioned H1B Valid from Oct 01, 2007 to September 30, 2010.
I haven’t used H1B VISA till now and it got expired. I have moved to another employer now. Still 6 years has not completed after H1B expiration. 6 years cab will be considered after expiration or from the date of approval. Can I apply for the H1B extension through other employer. Please suggest


Seems like my Case is also looks same, I had H1 visa validity from 2008 to 2011. I have not travelled to US and moved to another employer in India.

Do i have chance to user H1 visa as per new regulations…?

Can someone suggest?