Apple has won a key patent case against rival Samsung at the US International Trade Commission (US ITC). The US ITC upheld a 2011 decision, which found that Samsung had infringed Apple patents in the production of mobile phones, media players and tablets. The US ITC has ordered that Samsung devices affected by the ruling are banned from the US. But that ban is on hold while US President Barack Obama reviews the decision. The President has 60 days to assess the US ITC's findings, although analysts say he is unlikely to overturn the commission's decision. Apple and Samsung have been fighting patent battles for years and across 10 countries. The fight has escalated after Samsung overtook Apple last year to become the global leader in smart phone sales. Battles between Apple and Samsung have escalated as Samsung has eaten into Apple's market share.