H1B visa and I 94 which one to consider

[mail2pgs]

Hi
I am on H1B valid till 25th Feb 2014 when I arrived US I got I-94 valid till 15 sep 2015.
My question is which date I need to consider to stay and work in US , till H1B validity or I-94 validity?
Please help
Thanks
PGS

[puneetarora]

My L1-B visa dates are Nov 2008 – Nov 2011. The visa is under Blanket petition. I came to US in Jan 2009. Went to India for vacation in Jan 2011 and came back in Feb 2011. The port of entry office gave me an I-94 with L1 class for up to Feb 2014 (not sure on what basis as my Visa expires in Nov...

[forumuser1]

Could anybody please answer my I-94 validity question.

Here is the sequence of events happened with my I-94,

1) I-94 issued till 11/30/09 (because of Passport expiry) at POE last entry to USA even though I-797 valid till 2/25/10.

2) Got H1-B extension and...