RCM required for zero paid service charge?

Dear experts,
I have filed Patent under Startup India scheme which gives me benefit of zero fees for service given by Patent facilitator ( consultants).
My consultant has raised invoice without GST as he is not liable for GST ( Unregistered dealer)
He charged 0 ₹ as his service charge and he charged me only statutory fees for examination which is 8000/- ₹ ( for 2 parents)
So my question is,
do i need to self generated the invoice under RCM?
Thanks in advance