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Apple Sues Samsung in Patent Fight

Samsung Electronics' Galaxy S, left, and Apple's iPhone 4 are displayed. South Korea's Samsung Electronics Co. says it sued Apple Inc. for patent rights violations, only days after Apple sued Samsung for the same reason, (File)

U.S. technology giant Apple said Friday it has filed a lawsuit in South Korea claiming Samsung Electronics infringed upon several patents.

Apple filed a lawsuit in April in the United States, claiming Samsung had copied its smart phones and tablet computers.

The South Korean company responded later that month with a lawsuit in Seoul, the U.S. and Germany, alleging patent infringements by Apple.

Despite the legal wrangling, the two firms have a close business relationship. Apple was Samsung's second-largest client last year, mainly purchasing semi-conductors.

Some information for this report was provided by AP, AFP and Reuters.