Formalities after a Company's name change

I work in an ITES company. Our company has undergone name change. We have got new Certificate of Incorporation and Articles,Memorandum (changed) reflecting the name change.
I would like to know whether the following will be changing after we intimate to the concerned authorities.If so Whats the procedure to obtain them.
1. Company's PAN number
2. TIN number
3. Service tax number
4. VAT number
5. Customs
6. STPI
any other related depts.
Kindly explain.
Thanks and regards