Buy One Get One Free...
A fairly simple formula could be used.
Number of infringing chips(a), multiplied by years of use(b),plus projected future volume(x), @ (y)cents per unit.
[(a x b) + x]y
For "First mover discount"
[(a x b) + x]y divided by [(a x b) + x]y
plus a couple of $million.
Obviously, when all 1st mover discounted places have been allocated and as subsequent licensees are smaller users, the above formula would still hold true.
Corrections more than welcome.
Be well