I know this is few months old but where's the source for Tern owns license/patent for Vector series? I always wonder why the verge/vector looks almost the same. Also, other part that was used in some dahon was changed. Look at the seatpost Postpump 1.0 and 2.0 Biologic says "built for tern".
http://www.thinkbiologic.com/product...mp-20-seatpost