A word for untrue innovation/invention/discovery

Question

This company publicized ————— as inventions and discoveries.

What they propose as an invention is just a —————.

I am looking for a word/phrase meaning unfounded view/idea/claim or untrue innovation/discovery.

Answer 1

Hoax is a possibility.

Per Merriam-Webster, it means:

something accepted or established by fraud or fabrication

believes the Loch Ness Monster is a hoax

Answer 2

This company publicized pipedreams as inventions and discoveries.
What they propose as an invention is just a pipedream.

Pipedream (n.)

An illusory or fantastic plan, hope, or story M-W

Pipe dream (n.)

An idea or plan that is impossible or very unlikely to happen:

Her plans are not realistic - they'll never be more than a pipe dream. Cambridge

Answer 3

One sense of phony fits:

phony [/phoney] [adjective]: 1. not real or genuine; fake; counterfeit

• a phony diamond

[• the phoney war]

[noun]:

4. something that is phony; a counterfeit or fake

[Collins]

• What they claim to be an earth-shattering invention is really just a phony.