Was going to say it appears that the Segway patent has run out. But then:<p><a href="http:&#x2F;&#x2F;www.theverge.com&#x2F;2015&#x2F;9&#x2F;15&#x2F;9330361&#x2F;segway-hoverboard-patent-hovertrax-lawsuit" rel="nofollow">http:&#x2F;&#x2F;www.theverge.com&#x2F;2015&#x2F;9&#x2F;15&#x2F;9330361&#x2F;segway-hoverboard-...</a><p>I was working on iBot cost reduction stuff back in 1999 when that patent was filed. I was under the impression the company (our customer) had a lot of balancing machines running around at the time and figured the patent must have been a few years old at that point. Guess not.