Define 'clone'.

3sixty, B-bike, Chedech, Cigna, Flamingo, Fova, Groo, La Bici, MIT, Neo, Pico, Sanye, United Tri-Fold and Viking X are some of the bikes one might find in East and Southeast Asia patterned after the no longer patent-protected Andrew Ritchie design. The Burke 20, Crosshead and Java Neo have clearly evolved from the Ritchie design. Brompton claimed the Dahon Curl was a 'clone' and they brought suit in EU court. The suit was thrown out and Brompton wound up paying Dahon's legal fees.

Bromptonesque frames are available aftermarket fabricated in stronger, lighter materials than the HiTen steel Brompton uses; here in titanium:




"The best defense against copying is innovation.” Will Butler-Adams