Ebay's hands are tied. When a brand owner contacts them to say a particular item is counterfeit, they have to remove the listing - it's the law. You can read all about the VeRO programme for yourself (link at foot of any page). When that happens, it is up to you to counter that claim with the brand owner. If, as you say, Microsoft say they lodged no such claim via the VeRO programme, then it is up to Microsoft to advise Ebay accordingly. You say that Microsoft say they've done that, so you will just have to wait for things to take their course. You don't say how long this has been going on, but it won't happen quickly, obviously, as Ebay will have a mountain of similar stuff to work their way through.
That there are similar items listed on Ebay is totally irrelevant. The brand owner has to report each listing separately. And as soon as a batch of such listings are removed, another batch appears. It's a never-ending task.
@driversoftware
