Kyocera Sues Hanwha Q Cells Japan for Solar Patent Infringement

Kyocera Corp., a Japanese solar-panel maker, filed a lawsuit against Hanwha Q Cells Japan Co. saying Hanwha infringed its patent for solar panels.

Kyocera filed a suit with the Tokyo District Court today, the Kyoto-based company said in a statement.

Kyocera decided to bring suit after negotiations with Hanwha failed to progress, according to today’s statement.

The suit concerns technology to improve the efficiency of solar panels, which Kyocera patented in March 2012, the company said in the statement.

Germany’s Q-Cells was bought by Hanwha Group in late 2012 after becoming insolvent.

Hanwha officials in Tokyo weren’t immediately available for comment.

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