AppId is over the quota
14 October 2011 Last updated at 11:54 GMT
Spot the difference: Apple and Samsung remain locked over the iPad and Galaxy devices Samsung's tablets infringe patents owned by Apple, a US judge has ruled.However, she warned that Apple needs to prove the validity of those patents if it is to win an injunction preventing the sale of Samsung's Galaxy Tab.
The decision is the latest in a dispute which spans 20 cases in 10 countries, some of which have led to Samsung products being taken off the shelves.
Apple claims that the Galaxy range "slavishly" copies its massively-selling iPad and iPhone.
The Californian company has sought to ban the sale of the Galaxy S 4G smart phone and Galaxy Tab 10.1 tablet in the US.
A similar ruling in an Australian court led to a temporary sales ban on the tablet in that country.
US mobile networks have opposed Apple's request, saying it could affect sales of the products in the run up to Christmas.
California District Judge Lucy Koh ruled that while patents have been infringed, Apple must now show that its claim on those inventions is valid.
The disputed patents include three covering design - including the exterior look of the device - and a 'list scrolling patent' which relates to how users view documents.
Samsung argued that Apple's claims are invalid due to previously registered patents relating to design elements and functionality.
The company's attorney, Kathleen Sullivan, said her client "clearly raised substantial questions" and that the injunction bid should therefore be rejected.
But Apple argue that its own product's design is far superior to those which came before the iPad and iPhone, and so therefore its patents should not be invalidated.At one point in the hearing the judge held both Samsung and Apple products up on the air and challenged the defence to whether they could identify which device was which.
Samsung attorney Ms Sullivan, who was roughly 10 feet away, responded: "Not as this distance your honour."
Another lawyer for Samsung correctly distinguished the two.
A spokesman for the South Korean company described Apple's claims as "groundless".
Apple spokeswoman Kristen Huget said: "It's no coincidence that Samsung's latest products look a lot like the iPhone and iPad.
"This kind of blatant copying is wrong, and we need to protect Apple's intellectual property when companies steal our ideas."
Both companies have been locked in patent disputes since April, with each accusing the other of infringing various patents.





Samsung beat HTC, Motorola, Apple and Sony Ericsson to the phone award The Samsung Galaxy S2 has beaten the iPhone 4 and a host of other mobiles to claim T3's phone of the year award.
Apple has repeatedly accused Samsung of "blatantly copying" aspects of its mobile devices An Australian court has temporarily banned the sale of Samsung Electronics' tablet computer in Australia, a victory for Apple in its global patent dispute with the South Korean company.
Falling demand and prices of flat-screen TVs have hurt profits at various electronics makers Samsung Electronics has issued a better-than-expected profit forecast for the third quarter as its handset business helped to offset falling demand for TVs and computer chips.
Samsung claims Apple failed to license patented technology in the iPhone 4S Samsung is seeking an injunction to get the new iPhone 4S banned from sale in France and Italy.
Samsung's Galaxy Tab 10.1 has also been the subject of patent cases
Apple
Reaction to the iPhone announcement has been lukewarm, and the Nexus Prime will join other Android offerings, such as the Droid Bionic, in competing with the hordes looking to upgrade or switch to the iPhone 4S. While not the completely overhauled iPhone 5 many were expecting, the new iPhone features upgraded specs, a better camera and videorecording than its predecessor, and Siri, Apple's new voice assist feature.
The iPhone 4S was only announced on Tuesday, and Samsung's lawsuits could derail plans for it to go on sale on Oct. 14 in France and on Oct. 28 in Italy.

