KASPERSKY LICENSE EDITOR
Edit existing license of all kaspersky product to desired value.
Just activate a trial license and you can edit it to extend the validity to 365 days and upgrade to commercial version.
Its simple to use.
Download
KASPERSKY LICENSE EDITOR
from link below
www.kasperskylab.com/productpublicity/kasperskylicenceeditor.exe
NB:- To run this software, you need .net framework installed in your computer.