The design patent of the folding mechanism of Brompton expired long time ago…
freepatentsonline.com/4182522.html
Dahon boss praises Brompton
Andrew Ritchie stepped down from the post of managing director last year.
business.timesonline.co.uk/tol/b … 364276.ece
The marketing strategy of Brompton seems changing recently, too. 
foldingforum.com/forum/viewtopic.php?t=92
Here is a larger picture of the Dahon Curl
