First Solar shares rise 5.07% intraday after USPTO upholds TOPCon patents against competitors.

First Solar, Inc. (FSLR) rose 5.07% intraday following the U.S. Patent and Trademark Office’s rejection of challenges to its TOPCon solar cell patents by Canadian Solar, JinkoSolar, and Mundra Solar. This legal victory, reported on January 20, 2026, reinforced First Solar’s competitive moat, prompting analyst upgrades, including a raised price target to $292.00 and a “Moderate Buy” consensus rating. Concurrently, institutional buying activity and positive sentiment from Susquehanna’s bullish forecast further supported the stock’s upward momentum. The patent protection solidified First Solar’s technological edge in the solar sector, attracting investor confidence amid broader industry growth trends.