If the copyright holder complains to eBay about your item and says that it's fake, that's it... the item is removed. I've read that even some items that are bought in outlet stores owned by the brand can be considered to be "fake" as they were made specifically for the outlet store and never intended to be sold at full high-end retail... though I personally have issues with this practice. Sometimes eBay will suspend selling privileges for listing counterfeit items, so consider yourself lucky if this didn't happen to you. If you are certain that your item is genuine, you might consider selling it somewhere else.