I suppose that the table is designed to fit skil tools. That possibly being the case, I would guess they are skirting any patent laws. Hey, I'm no lawyer. i once designed a piece of equipment for excavating earth. A lot of my friends and competitors told me:
A I was crazy
B I should get a patent
Well. i did not spend the time, or money to get patent. Within weeks, somebody (I had made the mistook of asking my dealer about my idea. He of course was one of the ones who had serious doubts about my sanity.) had followed my idea with a better way, but basically the same idea. Now, every heavy equipment company uses the same idea, different (and I might add much better) method and design to the same thing I had done. I don't think ideas are, or need to be, unique to any individual or company. Patents are made to protect from exact replicas. In this case, i have bought some Skil tools. I made the mistook of going for price (low) instead of quality. I have since learned something of the value of quality. I would not buy a platform made to fit only Skil tools over a platform designed to fit only Festool toys. there just ain't no comparrison.
Another note on this: a friend of mine once worked for a competitor of the company who first built the WorkMate. That company turned the designer down as they thought his idea was crazy. Now look how many companies have come up with their own copies. Each one is just enough different they can beat the patent laws.
Tinker