Canadian Solar Wins TOPCon Solar Cell Patent Claims by Trina

The US Patent Board also named three Canadian Solar firms for infringing patents

April 22, 2026

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The Patent Trial and Appeal Board of the U.S. Patent and Trademark Office (USPTO) has invalidated all claims by Trina Solar on two TOPCon (Tunnel Oxide Passivated Contact) solar cell patents against certain subsidiaries of Canadian Solar.

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