Yes, one can legally build and sell an 8086 clone. But there are tons of patented extensions in newer CPUs, e.g. http://www.patents.com/us-7499962.html http://w

Yes, one can legally build and sell an 8086 clone. But there are tons of patented extensions in newer CPUs, e.g. http://www.patents.com/us-7499962.html http://www.patents.com/us-7499962.html .