{"id":1878,"date":"2026-04-21T10:00:00","date_gmt":"2026-04-21T01:00:00","guid":{"rendered":"https:\/\/canadiansolar-energy.co.jp\/en\/news_release\/?p=1878"},"modified":"2026-04-21T16:54:45","modified_gmt":"2026-04-21T07:54:45","slug":"u-s-patent-trial-and-appeal-board-invalidates-trinas-topcon-patents","status":"publish","type":"post","link":"https:\/\/canadiansolar-energy.co.jp\/en\/news_release\/2026\/1878.html","title":{"rendered":"U.S. Patent Trial and Appeal Board Invalidates Trina’s TOPCon Patents"},"content":{"rendered":"\n

KITCHENER, ON,\u00a0April 17, 2026\u00a0\/PRNewswire\/ —\u00a0Canadian Solar Inc.<\/a>\u00a0(the “Company” or “Canadian Solar”) (NASDAQ: CSIQ) today announced that the Patent Trial and Appeal Board (“PTAB”) of the\u00a0U.S. Patent and Trademark Office\u00a0(“USPTO”) has issued Final Written Decisions invalidating all claims of two\u00a0TOPCon\u00a0(Tunnel Oxide Passivated Contact) solar cell patents. These patents were previously asserted by Trina Solar Co., Ltd. (“Trina”) against certain subsidiaries of\u00a0Canadian Solar.

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This ruling reinforces\u00a0Canadian Solar’s\u00a0long-standing, successful track record of managing international disputes. As a global leader in solar and energy storage technology innovation, the Company has always prioritized organic R&D and has established a comprehensive and effective system to manage, commercialize, and defend its global IP rights which cover all key aspects of the industry value chain.

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Colin Parkin, President of\u00a0Canadian Solar\u00a0and President of e-STORAGE,\u00a0<\/strong>commented,\u00a0“Canadian Solar\u00a0has always remained committed to organic and independent R&D. We possess a deep and comprehensive understanding of our proprietary technologies. While we respect and value the intellectual property rights of all companies as we do our own, we firmly oppose the abusive use of IP to extort or hinder competition. We will continue to vigorously defend our legitimate business interests.”

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About\u00a0Canadian Solar Inc.
<\/strong>Canadian Solar\u00a0is one of the world’s largest solar technology and renewable energy companies. Founded in 2001 and headquartered in\u00a0Kitchener, Ontario, the Company is a leading manufacturer of solar photovoltaic modules; provider of solar energy and battery energy storage solutions; and developer, owner, and operator of utility-scale solar power and battery energy storage projects. Over the past 25 years,\u00a0Canadian Solar\u00a0has successfully delivered over 174 GW of premium-quality, solar photovoltaic modules to customers across the world. Through its subsidiary e-STORAGE,\u00a0Canadian Solar\u00a0has shipped over 18\u00a0GWh\u00a0of battery energy storage solutions to global markets as of\u00a0December 31, 2025, boasting a\u00a0$3.6 billion\u00a0contracted backlog as of\u00a0March 13, 2026. Since entering the project development business in 2010,\u00a0Canadian Solar\u00a0has developed, built, and connected approximately 12 GWp of solar power projects and 6.2 GWh of battery energy storage projects globally. Its geographically diversified project development pipeline includes 24 GWp of solar and 83 GWh of battery energy storage capacity in various stages of development. Canadian Solar\u00a0is one of the most bankable companies in the solar and renewable energy industry, having been publicly listed on the NASDAQ since 2006.\u00a0For additional information about the Company, follow\u00a0Canadian Solar\u00a0on\u00a0LinkedIn\u00a0<\/a>or visit\u00a0www.canadiansolar.com<\/a>.

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Safe Harbor\/Forward-Looking Statements<\/strong><\/p>\n\n\n\n

Certain statements in this press release, including those regarding the Company’s expected future shipment volumes, revenues, gross margins, and project sales are forward-looking statements that involve a number of risks and uncertainties that could cause actual results to differ materially. These statements are made under the “Safe Harbor” provisions of the\u00a0U.S.\u00a0Private Securities Litigation Reform Act of 1995. In some cases, you can identify forward-looking statements by such terms as “may”, “will”, “expect”, “anticipate”, “future”, “ongoing”, “continue”, “intend”, “plan”, “potential”, “prospect”, “guidance”, “believe”, “estimate”, “is\/are likely to” or similar expressions, the negative of these terms, or other comparable terminology. These forward-looking statements include, among other things, our expectations regarding global electricity demand and the adoption of solar and battery energy storage technologies; our growth strategies, future business performance, and financial condition; our transition to a long-term owner and operator of clean energy assets and expansion of project pipelines; our ability to monetize project portfolios, manage supply chain fluctuations, and respond to economic factors such as inflation and interest rates; our outlook on government incentives, trade measures, regulatory developments, and geopolitical risks; our expectations for project timelines, costs, and returns; competitive dynamics in solar and storage markets; our ability to execute supply chain, manufacturing, and operational initiatives; access to capital, debt obligations, and covenant compliance; relationships with key suppliers and customers; technological advancement and product quality; and risks related to intellectual property, litigation, and compliance with environmental and sustainability regulations. Other risks were described in the Company’s filings with the Securities and Exchange Commission, including its annual report on Form 20-F filed on\u00a0April 10, 2026. Although the Company believes that the expectations reflected in the forward-looking statements are reasonable, it cannot guarantee future results, level of activity, performance, or achievements. Investors should not place undue reliance on these forward-looking statements. All information provided in this press release is as of today’s date, unless otherwise stated, and\u00a0Canadian Solar\u00a0undertakes no duty to update such information, except as required under applicable law.

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Canadian Solar Inc.<\/strong> Investor Relations Contact<\/strong><\/p>\n\n\n\n

Wina Huang
Investor Relations
Canadian Solar Inc.
investor@canadiansolar.com<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

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