Is H1 valid if received after the expiration of H4?

[maverick_02]

Hello Gurus,

I filed for Change Of Status(COS) from H4 to H1 on June 14, 2005.
I am planning to upgrade to premium processing so that I can get COS to H1 done earlier.

My H4 Visa expires on 20th October, 2005.

My concern is if I receive my COS to H1 after 20th October;

is my stay in US Valid?

Please let me know.

Thanks.