Take anything you heard and throw it out because most people are don't know much. I knew about the original Costco ball long before people knew it existed and got a hold of 30 dozen. At one point I thought about selling them when they went to $60 on ebay.
The original 4-pc did not violate any patents and they did not settle in the way you are suggesting. Both companies agreed to drop it after Nassau stopped making them.
BTW, the original is not even remotely close to a ProV1 by design.
Also, I forgot to mention the 3-pc is TPU which is not nearly as good as Cast Urethane which the original was.