From The Register (h/t Wendy McElroy):
Andrew Ainsworth, the man who designed the Imperial Stormtrooper uniforms, has won the right to sell replicas.
George Lucas has been suing Ainsworth since at least 2008 and the case finally ended up in London’s Supreme Court.
Ainsworth made the original helmets in 1977 – the legal action treated the helmets as the paradigm for the whole case.
Lucas described the uniforms as: “fascist white-armoured suits”. The director then worked with Nick Pemberton, Ralph McQuarrie and Ainsworth to finalise the design. Ainsworth was responsible for the vacumn-molding of the helmets. He made 50 for the original filming.