Dyson has failed in its bid to prove that a rival’s product copied one of its own vacuum cleaner designs.
The High Court ruled that the Mach Zen cylinder vacuum cleaner by Vax did not infringe the registered design of the DC02 - the first cylinder cleaner made by Dyson, in 1994.

Following the ruling, Dyson commented: "For Dyson, this case was about pure aesthetic design, not function, and the judgement is disappointing."

Vax said that its British-designed Mach Zen was different to any other vacuum cleaner in the marketplace.