A US court has banned the sale of Samsung's new Galaxy Tab 10.1 tablet computer in the ongoing patent battle with Apple.
The US District Court in northern California sided with Apple in the bitter dispute between the two technology giants over Samsung's alleged patent infringement.
The court ruled there was "evidence that Samsung altered its design to make its product look more like Apple's".
It also declared Apple had "presented a strong case" for the injunction.
Samsung said it was disappointed by the decision, claiming it would "ultimately reduce the availability of superior technological features to consumers in the United States".
The South Korean firm said the preliminary injunction pending further litigation was "based on a single design patent that addressed just one aspect of the product's overall design".
It added: "Should Apple continue to make legal claims based on such a generic design patent, design innovation and progress in the industry could be restricted."
Samsung said it would "take necessary legal steps", but did not elaborate.
However, the court said it had been "unpersuaded" by Samsung's arguments.
As a condition of the preliminary injunction, Apple was ordered to post a \$2.6m (£1.7m) bond.
This was to secure payment of any damages should it be found later that the Samsung product did not infringe on Apple's patent.
Apple could not immediately be reached for comment.
But in its initial complaint, which was filed in April 2011, it accused Samsung of having chosen to "slavishly copy" Apple.
It said Samsung had incorporated Apple technology in the design of its Galaxy line of mobile phones and tablets, which run on Google's Android operating system.