Samsung has already taped out 14nm and 20nm devices in 2012 and will have them in production This year, not 2015
You are but one of many people on AI who claim Apple should move their chip manufacture away from Samsung to stop them copying Apple's technology.
Can anyone point to any chip level tech Samsung has copied from Apple?
They haven't, for the very simple reason they don't need to. Anyone who thinks Apple knows more about making cutting edge processors and SOC's than Samsung really is living in La-La land.
That is not true. You obviously aren't one of the happy customers who bought a Macbook Pro Retina with an LG screen in it.
No one said Samsung copies Apple's chips. However, Samsung's longstanding relationship with Apple (being the supplier of several critical components) has likely afforded them a glimpse of the direction Apple is heading. Samsung swore up and down that there's a "wall" between their component group and their consumer technology group, but that isn't necessarily true. This was all covered in the trial.
Also, Apple doesn't know more about making chips, but they are pretty good at designing them (or directing the design). Why do you think the A-series has often easily beat Samsung's comparable chips?