A dispute over the alleged theft of wind-turbine technology is slated to go to trial in Wisconsin on Monday in a test case for intellectual-property battles between the U.S. and China.

Federal prosecutors accuse Chinese wind-turbine maker Sinovel Wind Group Co. Ltd. of stealing the source code for software that controls wind turbines from American Superconductor Corp., a Massachusetts-based engineering company that once counted Sinovel as its biggest customer.

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