Implication of Apple patent on OpenCL

Sorry to post in technical forum, but there’s nothing else that seemed appropriate and this is technical to me when choosing between CUDA and OpenCL.

Apparently apple has a patent with 27 claims on OpenCL. And there are only 3 articles I found discussing this. This is an excellent summary of my concerns expressed by somebody else:

I don’t understand the answer. Maybe somebody from Khronos can elaborate? The bottom line is, will it ever the a possibility that I have to pay royalties to run OpenCL code I write and sell?