Hi
The VID 0x03eb belongs to ATMEL.
ATMEL does allow users of their products to register a PID under that VID - usually restricted to a certain maximum quantity of devices (typically maximum 10'000).
You will however need to contact your ATMEL representative to get the registration details - I don't think that this forum will be able to give you enough information.
If it is a hobby project and not commercial it is simplest to just chose one and use it - as long as the device doesn't leave your hobby room it can not cause any problems.
Regards
Mark
http://www.uTasker.com