US Customs agents routinely seize and destroy shipments of Apple parts based on trademark tarnishment claims that boil down to something like this: “If you opened your phone after knowingly, deliberately getting it fixed by a third party who told you they’d be using refurb parts, and used a jeweler’s loupe to look at those parts, you would see a tiny Apple logo. Then, if the phone stopped working because the part was faulty, you would develop a negative association with our logo.”
