Amazon.com won the first round of its court case against Barnsandnoble.com over the online retailer's 1-Click technology this week. US District Court Judge Marsh Pechman granted a preliminary injunction late on Wednesday to stop rivals copying and using the technology, which is a checkout system that stores information so users do not have to re-enter personal details when re-visiting Amazon's site. Barnesandnoble.com said it was disappointed with the decision, but was confident that it would win upon appeal. The defendant also said the move would accelerate the launch of its Express Checkout service, which will replace the existing Express Lane service and does not use the disputed 1-Click technology. Express Checkout had been due for launch next year, but would now be in place in a matter of days, it said. Amazon filed the suit in federal court in Seattle in October, accusing Barnesandnoble.com of illegally copying its 1-Click invention, to which Amazon won the patent on 28 September. The US cyber giant is gunning for damages worth three times a 'reasonable royalty' for the technology, plus legal expenses. Jeff Bezos, Amazon CEO, claimed it took nearly six months and 3500 hours to program the 1-Click system. ® Related Story Amazon sues Barnes and Noble over checkout system