Do you want a prototype to official document something?
Answers:
It is my construal that you may profile for a government grant near the schematic design, and don't in actuality want to submit a working prototype. Legally, you don't involve to own a device, though, for practical reason, you will potential enjoy constructed something for carrying out tests.
Always best to run these question by your rights attorney, however, as answers potential differ depending on the industry or rights applied for.
Yes.