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China Supreme Court Ruling Favors AMSC in Two Sinovel Suits

American Superconductor Corp. said two copyright-infringement cases brought in China will be heard in court after the country’s Supreme People’s Court rejected efforts to move the disputes to arbitration.

The cases are among four suits AMSC filed in 2011 against Sinovel Wind Group Co., the Chinese wind-turbine maker that was once its largest customer, the Devens, Massachusetts-based supplier of wind-power components said in a statement today. AMSC shares surged the most in 18 months.