I was asked earlier if we usually get convictions. Most of the time we do get convictions, but part of the reason is that we pick and choose which ones we go to court with.
The reason we don't get convictions in some cases is because we have to prove the knowledge, and that's a very hard thing to prove. Between the manufacturer and the retail level there's a supply chain, and you have to prove how many people in that supply chain knew this thing was counterfeit. Sometimes that's not easy. So maybe the retailer didn't know, maybe they did, or maybe they were told it wasn't counterfeit, it was refurbished, or something like that. There's also the concept of wilful blindness.
We do sometimes charge the retailer, although generally we try to work backwards and go for the wholesaler, the importer, and the manufacturer, and leave the retailer up to the private sector.