L2 EAD Renewal document requirements

[ashek]

Hi

I am on L2 and have EAD that would be due for renewal soon. following is my status

Spouse's L1A Visa expiry - April 09, 2015
I94 expiry - April 09, 2015

My L2 Visa Expiry - April 09, 2015
My I94 expiry - April 09, 2015
My EAD expiry - April 09, 2015

Everything expires on same day, ie April 09, 2015.

I read on USCIS site that I need to apply for renewal 90 days before expiry, ie 09 Jan 2015.
My Supouse's company would file for his L1A and my L2 extension in Jan so we are expecting the receipt for same by Feb 2015.

What I would like to know (which I did not find in forums easily) is about the documents that would be required for my EAD renewal...

Would they renew the EAD on the basis of the L1 extension receipt or would they specifically need an approved petition (which we would get after 240 days of filing the extension as in most cases)

if not, then is there any other possibility to get the EAD renewal done...

Thanks in advance