L1B visa extension process - I94,visa valid , PED date expired

[Sreeranjani Venkartasubram]

Hi,

I entered in US in Jan2015 on -

• L1 B Blanket Visa with visa expiry as Oct 3 - 2018.
• At POE i-94 was issued until Jan 23 -2018.
• Blanket PED mentioned on visa as Oct 2 - 2016.
• I129 - Oct 3, 2016
• Passport stamping valid till date - Jan 23 , 2018
• I 797 - Petition valid indefinitely

Note mentioned on  my passport VISA at port of entry must present I797 / I129-S at POE

Could you kindly help confirm what options I have to get L1B validity / I94 date extended based on above details stated?

Confirm if I am eligible for applying L1B extension / can to go out of US and renter to get new i-94 at POE

please advise.