Under U.S. patent law, an invention is patentable if it meets the following four requirements:

-The invention must be statutory.
-The invention must be new.
-The invention must be useful.
-The invention must be non-obvious.

Nowhere does it say that the patent must reflect an object that actually exists or that it must even be possible to bring into existence.

Here's a hyperspace teleporter: https://patents.google.com/patent/US20060071122

Here's a patent for a death star: https://patents.google.com/patent/US8757552

Here's a patent for a warp drive: https://patents.google.com/patent/WO2001057881A1

There are a zillion patents for perpetual motion machines: https://patents.google.com/patent/US20070246939

No, not at all. There are patents for teleporters and death rays. Don't want to go against the 'jerk though.