They have large concerns. It's one of the hottest topics amongst designers, not only product designers but also interior designers and architects who take their sketches to China and have them knock off the buildings.
Emerging product designers are especially reluctant to go to trade shows, because they think other people are going to steal their ideas. The Design Exchange is working on a program with a legal firm for IP, to help train designers in the importance of protecting their products. It's unfortunate, because designers are relatively undervalued and underpaid. They can't normally afford the services of a legal firm to help them protect their products. It's something we're trying to educate them about, but we see a reluctance by a lot of small firms--even large firms--to showcase their work, because they're afraid of the knock-off factor.