09:39 AM EDT, 07/19/2024 (MT Newswires) -- First Solar ( FSLR ) said Friday that it owns patents for the manufacturing of tunnel oxide passivated crystalline-silicon photovoltaic solar cells and is now investigating several manufacturers for potential patent infringement.

The company said the patents acquired through its purchase of TetraSun in 2013 include patents valid until 2030 in various countries, including the US, Canada, and China, as well as pending applications in the EU and Japan.

First Solar ( FSLR ) said it plans to take legal action against manufacturers who infringe on these patents.

Shares of the company were up less than 1% in recent early Friday trading.

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