What CNet says is this:
"Our only hesitation about the Monoprice 9774 speaker system is an ethical one. There's no denying these speakers feel like knockoff versions of the Energy system, and we have reservations about recommending a product that, at least in lay terms, feels like it ripped off the design and engineering work of another company. Monoprice has confirmed that it has not licensed the design from Energy, but hasn't explained exactly how the products look and perform so similarly."
I guess it comes down to how this came to be the case. If Energy really did the engineering and didn't give Monoprice rights to what they came up with, then I wouldn't feel comfortable buying these from Monoprice. If it is instead a case where both companies are licensing a design from someone else, that's an entirely different matter. Hopefully the situation gets clarified soon.