Counterfeit sales on eBay have become so pervasive that one company affected by it, Tiffany & Company, is suing eBay for helping to facilitate counterfeit sales of their jewelry and profiting in fees. The trial ended on November 20th and post-trial briefs are due buy December 7th.

If Tiffany wins this case, some legal analysts believe eBay’s business model could change because other companies holding copyrights or trademarks may follow with similar lawsuits.

The New York Times covered this trial in Manhattan publishing this article by Katie Hafner on November 27th. The judge presiding over the trial, Judge Richard Sullivan, states at the end of the trial that there are legal precedents holding a distributor as “contributory responsible” if it continues to supply products knowing it infringes on a company’s trademark.