I can understand where Duff Man is coming from in saying that the bike rack concept was not Grip's own, he simply began to produce them for sale. And Grip now has a legal registered design for them in Australia (so far as I can understand).
So it appears that whilst Grip has a legally registered design, he is relying on this legal point to seperate his own copying/use of past designs from that of these GripSport copy cats. I understand where Duff Man finds this hypocrtical. However, it also appears that Grip can distinguish himself from these copy cats as he has taken someone elses concept and used his own measurments, specifications, materials, mounting systems ot create his own design. (It seems people have been distinguishing between a concept and a design as two very different things). These copy cats have not only used the concept but also Grips design, and as such, they are doing something more than what Duff Man suggests Grip has done in the past.
Is this the gist of whats happening here?