Story highlights A U.S. judge has approved Apple's request for a preliminary injunction against Samsung

Apple claims Samsung's Galaxy Tab 10.1 infringes on an iPad-related patent

This ruling does not affect the updated Tab 10.1 II, which was unveiled in May 2012

U.S. District Judge Lucy Koh has approved Apple's request for a preliminary injunction in the U.S. against Samsung's Galaxy Tab 10.1.

"Although Samsung has a right to compete, it does not have a right to compete unfairly, by flooding the market with infringing products," Koh wrote on Tuesday

Apple filed a motion for a preliminary injunction in May 2012, claiming Samsung's Galaxy Tab 10.1 infringes on an iPad-related patent. Apple has also filed a similar motion against Samsung's Galaxy S III in June.

The judge's order becomes effective after Apple posts a $2.6 million bond as protection against damages suffered by Samsung if the injunction is later overturned.

It's important to note, however, that this ruling only affects Samsung's older 10-inch tablet, the Galaxy Tab 10.1. It does not affect the updated Tab 10.1 II, which was unveiled in May 2012.

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According to an IDC report from March 2012, Apple's iPad had a 54.7% market share in Q4 2011 while Samsung, which sells several tablet models, had a 5.8% share in the same period.