If you go to their website, these WiTricity peeps have landed some hot contracts with the biggest auto players. That’s because they can couple 11,000 Watts of power from 15 feet away, at a high efficiency using a phenom they call “tunneling”.
You won’t be using microwave frequencies (30-300 GHz), so don’t worry about exploding implants (but testing is always recommended). At 10 MHz, the components are cheap enough, and some can be made in the E-Lab. Mainly, you will be better off winding the coils your bad self, so you can get the shapes and resonances to test and tune. The send circuits are easy and cheap, as well as the receiver electronics. It looks like the key to this Tech is; tuning, tuning, and more tuning. The tighter you can tune these resonant frequency RC circuits (not radio controlled, but Reactive Capacitance) to each other, the higher the coupling and greater the distance range.
In summary, compared to the results of WiTricity, I think that sending 200W would be child’s play. The only thing that puzzles me is this: why don’t you just use a power wire? What is the pressing need to create an exotic power source?