https://www.paypal.com/webapps/mpp/ua/a ... leuse-full" onclick="window.open(this.href);return false;
(Note- My emphasis)You may not use the PayPal service for activities that:
2. relate to transactions involving ...... (h) items that infringe or violate any copyright, trademark, right of publicity or privacy or any other proprietary right under the laws of any jurisdiction,
So- if the Ebay seller is offering a counterfeit Spyderco and offer Paypal- make sure you report the listing to Paypal too.....There's a link at the bottom of the page to do so.
Likewise, any Chinese clone seller offering Paypal should be reported....
If we, the community, flood Paypal with the reports we can at least say we've done our little bit for it....Clearly, it's far from cut and dried, but I consider that every little helps :)