{"id":928560,"date":"2026-01-20T09:36:10","date_gmt":"2026-01-20T14:36:10","guid":{"rendered":"https:\/\/www.marketnewsdesk.com\/index.php\/us-patent-trademark-office-rejects-attempts-by-canadian-solar-jinkosolar-and-mundra-solar-to-challenge-validity-of-first-solar-topcon-patents\/"},"modified":"2026-01-20T09:36:10","modified_gmt":"2026-01-20T14:36:10","slug":"us-patent-trademark-office-rejects-attempts-by-canadian-solar-jinkosolar-and-mundra-solar-to-challenge-validity-of-first-solar-topcon-patents","status":"publish","type":"post","link":"https:\/\/www.marketnewsdesk.com\/index.php\/us-patent-trademark-office-rejects-attempts-by-canadian-solar-jinkosolar-and-mundra-solar-to-challenge-validity-of-first-solar-topcon-patents\/","title":{"rendered":"US Patent & Trademark Office Rejects Attempts by Canadian Solar, JinkoSolar, and Mundra Solar to Challenge Validity of First Solar TOPCon Patents"},"content":{"rendered":"

<\/p>\n

US Patent & Trademark Office Rejects Attempts by Canadian Solar, JinkoSolar, and Mundra Solar to Challenge Validity of First Solar TOPCon Patents<\/b><\/p>\n

Inter Partes Review applications denied as First Solar lawsuits continue to progress<\/i><\/p>\n

PHOENIX–(BUSINESS WIRE<\/a>)–
\nFirst Solar, Inc. (Nasdaq: FSLR) (\u201cFirst Solar\u201d) today announced that the Director of the United States Patent and Trademark Office (USPTO) denied three separate Inter Partes<\/i> Review (IPR) applications seeking to invalidate the company\u2019s Tunnel Oxide Passivated Contact (\u201cTOPCon\u201d) patents through a review process. The IPRs were filed by JinkoSolar, Mundra Solar, and Canadian Solar in 2025, and were declined on November 20, December 11, and December 18, respectively.<\/p>\n

\nWhile JinkoSolar and Canadian Solar sought to invalidate First Solar\u2019s US Patent No. 9,130,074, Mundra Solar\u2019s application sought a review of First Solar\u2019s US Patent No. 9,666,732. Both patents cover methods of manufacturing TOPCon crystalline silicon (\u201cc-Si\u201d) photovoltaic (PV) solar cells. First Solar has pending lawsuits against all three companies alleging infringement of its patents in the United States District Court for the District of Delaware.<\/p>\n

\n\u201cFirst Solar believes the USPTO properly exercised its discretion in each of the cases brought by Jinko, Canadian Solar and Mundra,\u201d said Jason Dymbort, Executive Vice President, General Counsel and Secretary, First Solar. \u201cWe believe that this is consistent with USPTO\u2019s \u2018Settled Expectations\u2019 doctrine, which is underpinned by the principle that the longer a patent has been in force, the stronger and more settled the patent owner’s expectations should be. The patents at issue in each of these matters were issued in 2015 and 2017, respectively, long before each of these manufacturers\u2019 petitions were filed.\u201d<\/p>\n

\nDymbort added, \u201cThe USPTO\u2019s decision reinforces our belief in the strength of our TOPCon technology patent portfolio. As we\u2019ve consistently stated, we will actively defend our intellectual property rights in the US and internationally and continue to pursue legal action against these and other manufacturers, as we work to enforce our patent rights.\u201d<\/p>\n

\nFirst Solar obtained the US TOPCon patents and related international counterparts through its 2013 acquisition of TetraSun, Inc. The patents include issued patents in the United States, Australia, Canada, China, the European Union, Hong Kong, Japan, Mexico, Malaysia, Singapore, South Korea, the United Arab Emirates, and Vietnam with validities extending to 2030 and beyond. The portfolio also includes pending patent applications in the European Union, Japan, Hong Kong, United Arab Emirates, and Vietnam. In July 2024, First Solar announced its intention to license and enforce the TOPCon technology patent portfolio and the launch of infringement investigations against several leading crystalline silicon solar cell manufacturers.<\/p>\n

About First Solar, Inc.<\/b><\/p>\n

\nFirst Solar, Inc. is America’s leading PV solar technology and manufacturing company. The only US-headquartered company among the world’s largest solar manufacturers, First Solar is focused on competitively and reliably enabling power generation needs with its advanced, uniquely American thin film PV technology. Developed at research and development (R&D) labs in California and Ohio, the Company’s technology represents the next generation of solar power generation, providing a competitive, high-performance, and responsibly produced alternative to conventional crystalline silicon PV modules. For more information, please visit www.firstsolar.com<\/a>.<\/p>\n

Cautionary Statement Regarding Forward-Looking Statements<\/b><\/p>\n

\nThis press release contains various \u201cforward-looking statements\u201d which are made pursuant to safe harbor provisions of the Private Securities Litigation Reform Act of 1995. These forward-looking statements include, but are not limited to, statements concerning: (i) the validities extending to 2030 of patents including issued patents in the United States, Australia, Canada, China, the European Union, Hong Kong, Japan, Mexico, Malaysia, Singapore, South Korea, the United Arab Emirates, and Vietnam; (ii) that we will actively defend our intellectual property rights, (iii) our future plans and areas of focus in relation to patent rights, (iv) the perceived value of patent rights, and (v) our positioning to enforce patent rights. These forward-looking statements are often characterized by the use of words such as \u201cestimate,\u201d \u201cexpect,\u201d \u201canticipate,\u201d \u201cproject,\u201d \u201cplan,\u201d \u201cintend,\u201d \u201cseek,\u201d \u201cbelieve,\u201d \u201cforecast,\u201d \u201cforesee,\u201d \u201clikely,\u201d \u201cmay,\u201d \u201cshould,\u201d \u201cgoal,\u201d \u201ctarget,\u201d \u201cmight,\u201d \u201cwill,\u201d \u201ccould,\u201d \u201cpredict,\u201d \u201ccontinue\u201d and the negative or plural of these words and other comparable terminology. Forward-looking statements are only predictions based on First Solar\u2019s current expectations and First Solar\u2019s projections about future events and therefore speak only as of the date of this release. You should not place undue reliance on these forward-looking statements. First Solar undertakes no obligation to update any of these forward-looking statements for any reason, whether as a result of new information, future developments or otherwise. These forward-looking statements involve known and unknown risks, uncertainties, and other factors that may cause First Solar\u2019s actual results, levels of activity, performance, or achievements to differ materially from those expressed or implied by these statements. These factors include, but are not limited to, the results of our investigation of potential infringers, the costs and other impacts arising from any subsequent litigation, the results of which are unpredictable; the validity and scope of claims relating to the patents; the potential for companies to develop and patent technology designed to exclude our patented technology; and the matters discussed under the captions \u201cRisk Factors\u201d and \u201cManagement\u2019s Discussion and Analysis of Financial Condition and Results of Operations\u201d of First Solar\u2019s most recent Annual Report on Form 10-K, as supplemented by First Solar\u2019s other filings with the Securities and Exchange Commission.<\/p>\n

\"\"<\/p>\n

View source version on businesswire.com: <\/span>https:\/\/www.businesswire.com\/news\/home\/20260119166413\/en\/<\/a><\/span><\/p>\n

Media
\n<\/b>
Reuven Proen\u00e7a
\n<\/b>
First Solar Media
\n
media@firstsolar.com<\/a><\/p>\n

Investors
\n<\/b>
Byron Jeffers
\n<\/b>
First Solar Investor Relations
\n
investor@firstsolar.com<\/a><\/p>\n

KEYWORDS:<\/b> Arizona United States North America<\/p>\n

INDUSTRY KEYWORDS:<\/b> Other Manufacturing Environment Technology Utilities Manufacturing Alternative Energy Green Technology Energy Hardware<\/p>\n

MEDIA:<\/b><\/p>\n\n\n\n\n
Logo<\/b><\/font><\/td>\n<\/tr>\n
\"Logo\"<\/td>\n<\/tr>\n
<\/font><\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

US Patent & Trademark Office Rejects Attempts by Canadian Solar, JinkoSolar, and Mundra Solar to Challenge Validity of First Solar TOPCon Patents Inter Partes Review applications denied as First Solar lawsuits continue to progress PHOENIX–(BUSINESS WIRE)– First Solar, Inc. (Nasdaq: FSLR) (\u201cFirst Solar\u201d) today announced that the Director of the United States Patent and Trademark Office (USPTO) denied three separate Inter Partes Review (IPR) applications seeking to invalidate the company\u2019s Tunnel Oxide Passivated Contact (\u201cTOPCon\u201d) patents through a review process. The IPRs were filed by JinkoSolar, Mundra Solar, and Canadian Solar in 2025, and were declined on November 20, December 11, and December 18, respectively. While JinkoSolar and Canadian Solar sought to invalidate First Solar\u2019s US Patent No. 9,130,074, Mundra … <\/p>\n

Continue reading “US Patent & Trademark Office Rejects Attempts by Canadian Solar, JinkoSolar, and Mundra Solar to Challenge Validity of First Solar TOPCon Patents”<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[],"tags":[],"class_list":["post-928560","post","type-post","status-publish","format-standard","hentry"],"yoast_head":"\nUS Patent & Trademark Office Rejects Attempts by Canadian Solar, JinkoSolar, and Mundra Solar to Challenge Validity of First Solar TOPCon Patents - Market Newsdesk<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.marketnewsdesk.com\/index.php\/us-patent-trademark-office-rejects-attempts-by-canadian-solar-jinkosolar-and-mundra-solar-to-challenge-validity-of-first-solar-topcon-patents\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"US Patent & Trademark Office Rejects Attempts by Canadian Solar, JinkoSolar, and Mundra Solar to Challenge Validity of First Solar TOPCon Patents - Market Newsdesk\" \/>\n<meta property=\"og:description\" content=\"US Patent & Trademark Office Rejects Attempts by Canadian Solar, JinkoSolar, and Mundra Solar to Challenge Validity of First Solar TOPCon Patents Inter Partes Review applications denied as First Solar lawsuits continue to progress PHOENIX–(BUSINESS WIRE)– First Solar, Inc. (Nasdaq: FSLR) (\u201cFirst Solar\u201d) today announced that the Director of the United States Patent and Trademark Office (USPTO) denied three separate Inter Partes Review (IPR) applications seeking to invalidate the company\u2019s Tunnel Oxide Passivated Contact (\u201cTOPCon\u201d) patents through a review process. The IPRs were filed by JinkoSolar, Mundra Solar, and Canadian Solar in 2025, and were declined on November 20, December 11, and December 18, respectively. 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(Nasdaq: FSLR) (\u201cFirst Solar\u201d) today announced that the Director of the United States Patent and Trademark Office (USPTO) denied three separate Inter Partes Review (IPR) applications seeking to invalidate the company\u2019s Tunnel Oxide Passivated Contact (\u201cTOPCon\u201d) patents through a review process. The IPRs were filed by JinkoSolar, Mundra Solar, and Canadian Solar in 2025, and were declined on November 20, December 11, and December 18, respectively. While JinkoSolar and Canadian Solar sought to invalidate First Solar\u2019s US Patent No. 9,130,074, Mundra … Continue reading \"US Patent & Trademark Office Rejects Attempts by Canadian Solar, JinkoSolar, and Mundra Solar to Challenge Validity of First Solar TOPCon Patents\"","og_url":"https:\/\/www.marketnewsdesk.com\/index.php\/us-patent-trademark-office-rejects-attempts-by-canadian-solar-jinkosolar-and-mundra-solar-to-challenge-validity-of-first-solar-topcon-patents\/","og_site_name":"Market Newsdesk","article_published_time":"2026-01-20T14:36:10+00:00","og_image":[{"url":"https:\/\/cts.businesswire.com\/ct\/CT?id=bwnews&sty=20260119166413r1&sid=flmnd&distro=nx&lang=en","type":"","width":"","height":""}],"author":"Newsdesk","twitter_card":"summary_large_image","twitter_misc":{"Written by":"Newsdesk","Est. reading time":"5 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/www.marketnewsdesk.com\/index.php\/us-patent-trademark-office-rejects-attempts-by-canadian-solar-jinkosolar-and-mundra-solar-to-challenge-validity-of-first-solar-topcon-patents\/#article","isPartOf":{"@id":"https:\/\/www.marketnewsdesk.com\/index.php\/us-patent-trademark-office-rejects-attempts-by-canadian-solar-jinkosolar-and-mundra-solar-to-challenge-validity-of-first-solar-topcon-patents\/"},"author":{"name":"Newsdesk","@id":"https:\/\/www.marketnewsdesk.com\/#\/schema\/person\/482f27a394d4fda80ecb5499e519d979"},"headline":"US Patent & Trademark Office Rejects Attempts by Canadian Solar, JinkoSolar, and Mundra Solar to Challenge Validity of First Solar TOPCon Patents","datePublished":"2026-01-20T14:36:10+00:00","mainEntityOfPage":{"@id":"https:\/\/www.marketnewsdesk.com\/index.php\/us-patent-trademark-office-rejects-attempts-by-canadian-solar-jinkosolar-and-mundra-solar-to-challenge-validity-of-first-solar-topcon-patents\/"},"wordCount":955,"image":{"@id":"https:\/\/www.marketnewsdesk.com\/index.php\/us-patent-trademark-office-rejects-attempts-by-canadian-solar-jinkosolar-and-mundra-solar-to-challenge-validity-of-first-solar-topcon-patents\/#primaryimage"},"thumbnailUrl":"https:\/\/cts.businesswire.com\/ct\/CT?id=bwnews&sty=20260119166413r1&sid=flmnd&distro=nx&lang=en","inLanguage":"en-US"},{"@type":"WebPage","@id":"https:\/\/www.marketnewsdesk.com\/index.php\/us-patent-trademark-office-rejects-attempts-by-canadian-solar-jinkosolar-and-mundra-solar-to-challenge-validity-of-first-solar-topcon-patents\/","url":"https:\/\/www.marketnewsdesk.com\/index.php\/us-patent-trademark-office-rejects-attempts-by-canadian-solar-jinkosolar-and-mundra-solar-to-challenge-validity-of-first-solar-topcon-patents\/","name":"US Patent & Trademark Office Rejects Attempts by Canadian Solar, JinkoSolar, and Mundra Solar to Challenge Validity of First Solar TOPCon Patents - 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