Patent lawyers say it is rare for such injunctions to be issued in patent disputes.
Moreover, she wrote that Amazon would face ''irreparable harm'' if it did not have exclusive use of the one-click feature during the holidays, when as many as 10 million people are expected to shop online for the first time. This is the first ruling in what experts expect to be a flurry of disputes over patents related to Internet sites. It enables customers to click on a single button on a screen to order an item. To use the feature, customers must have previously registered their names, addresses and credit card information. But the judge did provide an alternative for Barnesandnoble.