With how much money it could make I don't think anyone short of an already established billion $ company could move faster enough to stay ahead.
You might get 4 months of sales before it popped up on Aliexpress and Amazon and their volume outpaced your ability to produce and sell them.
And you think a patent is going to stop that?
Yes, you would win the nobel prize.
Not just the Nobel prize and the money, but infinite global recognition. More valuable than any business profit.
You said it yourself, you can't patent over-unity, no matter how many subject matter experts you get to attest to it.
Your only option is to sell it and win the Nobel prize. Only doing that would they then remove the ban on over-unity patents.
You could attempt to patent some aspect of the manufacturing process that doesn't involve over-unity, but again, that's not really going to stop the cloners if there is a big enough demand for it, which there would be, instant and global. It would be an absolute free-for-all, the greatest tech rush in the history of humanity. You couldn't possibly stop that even if you were able to patent over-unity.