Michael Maloof, who is campaigning Nike to make the shoes that Michael J. Fox wore in Back to the Future Part II, notified me earlier this month that he successfully tracked down the patents. They were designed and do exist, the patents registered to Nike, Inc. in the early 1990s, some years after the film:
http://jackyan.com/files/mcfly2015_upper_for_a_shoe.pdf
http://jackyan.com/files/mcfly2015_element_of_upper.pdf
All it takes now is for the company to make them!
If you feel you’d be in the market for such shoes, Michael is leading a grass roots’ effort. Just fill in your details at www.mcfly2015.com and click on the button—it is rather painless.