[sneakerblack]

I think your accidentally misinterpreting the law

As explaine by the article, counterfeiting involves pretending to be a product it's not. For example, if you sell your hypothetical channel bags as genuine channel bags instead of as generic, no-brand bags, then that would be counterfeiting because you're pretending they're something that it's not. Using genuine apple parts in third-party screens is more comparable to putting channel bag straps (which, yes, have the channel logo on them) into fake bags and selling them as generic, non-channel bags. Similarly, if you don't label the third party screen as "genuine apple", you're not infringing copyright.