[Shicholas]

In our adversarial judicial system, you really don't have to disclose that until discovery. A lawyer may want to keep some of those similarities "close to the chest" to see how the other side responds first to some discovery requests. (this system is far from perfect).

[atoav]

Never said you have to legally. But given the PR fallout your incentive to still do it might be not insifnificant.