Joe,
I'm no legal expert, but from what I understand it is not Greenies design, it is just the fact that it is a seperate teflon glide, and I guess Harris owns the rights in the US for all "add-on teflon gluides" this seems too general to me........but some huge companies that were making their own version have ceased making them since this court action, so it must have some teeth. I guess how they are getting around it is to offer it part of the wand, perm attached. Seems very strange to me, as Harris is owned by Home Depot now and only provides support to their Chem Dry Franchise........and do not sell to anyone outside of their franchise network........heck I dont think Chemdry even uses wands in the US.