The owner of a copyright, trademark, or other intellectual property can register with eBay's VeRO (Verfiied Rights Owner) Program. Once that's done, having items removed that violate rights is easy -- one VeRO report is all it takes. The item will be removed and the seller will have restrictions place on his account.
Read more about it here:
https://www.ebay.com/sellercenter/ebay-for-business/verified-rights-owner-program
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