All keyboards have the same keys, right? A to Z. Not much different there. It is not like one would leave out Q or even have extra letters. Now that would be innovation!
Anyway... I think the only companies that could have any claim against Thermaltake would be Case Labs and Fractal Design. The other products seem like they were just thrown in there, just because. I mean, LegitReviews and Overclock3D couldn't even agree on which other fans that Thermaltake would have ripped off: Antec's or Corsairs... not that Thermaltake Riing fans would bear an even closer resemblance to fans from Cougar.
Also, Swiftech is the OEM for the waterblock, so no rip-off there.