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Apple is seeking billions in damages from Samsung over patents used in smartphones and tablets.

The Cupertino, California-based company believes Samsung owes “substantial monetary damages” in the region of $2.5 billion for illegally copying Apple products such as the iPhone and iPad.

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"Samsung's infringing sales have enabled Samsung to overtake Apple as the largest manufacturer of smartphones in the world," Apple's trial brief claims.

“Samsung has reaped billions of dollars in profits and caused Apple to lose hundreds of millions of dollars through its violation of Apple's intellectual property.”

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Samsung quickly countered, claiming that “Apple could not have become a successful participant in the mobile telecommunications industry" without the use of Samsung’s patented technology and that the iPhone maker was trying “to stifle legitimate competition and limit consumer choice to maintain its historically exorbitant profits."

The patent war between the two companies began when Apple first filed a lawsuit against Samsung in California, alleging that the company copied the “look and feel” of Apple products but the fight quickly spread across numerous markets around the world now with more than 20 cases ongoing.

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Executives from Samsung last week met with Apple Chief Tim Cook in a court-supervised mediation but there was no indication of a potential resolution, according to a report from Reuters.

The two companies are scheduled to go to a jury trial before U.S. District Judge Lucy Koh on July 30.