Petition changed for L1

[swethakuru]

We came to US L1(my husband) and L2 (me)on June 2010as per the company 'A' petition dated from june 2010 to june 2013 and now the 'A' company is taken over by company 'B' and so his company issued a new petition with name change as 'B' and the date from dec 2010 to dec 2013.

Do we need restamping if we go to india??
Please reply ASAP and is very much appriciated...