I don't think the patent infringement is the issue for ksig, that ball was some sort of Frankensteined tmag ball....so if it were truly a patent infringement, would we not have seen it before, that is Acushnet raising the same issue with tmag?
The other balls appear to all be made at the same foundry and all may be the same exact ball (ie open model), but sold by different companies.
I wander if accushnet is trying to get people to realize that ksig and these other balls are just that, open models, or a re badge of another companies leftovers and/or past models vs. The great titleist, who actually spend r and d money to create something
I find golfers a weird lot....you have guys who will only play big boy oem's for their sticks, and look down on anything else as inferior, yet will play a ksig.