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The patent EP2787541 was granted to Jingao Solar on Aug 31, 2022. The application was filed on Apr 2, 2014 under application number EP14001223A. The patent is currently recorded with a legal status of "Granted And Under Opposition".
Solar cell with improved efficiency, comprising a monocrystalline silicon substrate with a front surface emitter area and a back surface field area formed on a tunneling layer covering the entire back surface. The back surface field area is a polycrystalline silicon layer. The cell further includes passivation and anti-reflective films, and electrodes formed by screen printing and firing.
Latest UPC cases involving this patent.
| Case Number | Filing Date | Plaintiff | Proceeding Type |
|---|---|---|---|
| UPC_CFI_751/2024 | Nov 28, 2024 | Astronergy, Astronergy Europe | Counter Claim For Revocation |
| UPC_CFI_425/2024 | Jul 19, 2024 | Jingao Solar | Infringement |

Patent oppositions filed by competitors challenge the validity of a granted patent. These oppositions are typically based on claims of prior art, lack of novelty, or non-obviousness. They are a key part of the process for determining a patent's strength and enforceability.
| Company | Opposition Date | Representative | Opposition Status |
|---|---|---|---|
| CHINT NEW ENERGY TECHNOLOGY | Nov 27, 2024 | FLACH BAUER & PARTNER PATENTANWALTE MBB | INTERVENTION |
| ASTRONERGY SOLAR NETHERLANDS | Nov 8, 2024 | FLACH BAUER & PARTNER PATENTANWALTE MBB | INTERVENTION |
| ASTRONERGY EUROPE | Sep 24, 2024 | REKTORSCHEK | INTERVENTION ADMISSIBLE |
| CARBON SEMCO SMARTECH FRANCE | May 31, 2023 | PLASSERAUD | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| EXAMINATION | EP2822042 |
| OPPOSITION | CN103367547 |
| OPPOSITION | EP1320134 |
| OPPOSITION | EP2312650 |
| OPPOSITION | EP2387079 |
| OPPOSITION | JP3158027B |
| OPPOSITION | US2009205712 |
| OPPOSITION | US2010275984 |
| OPPOSITION | US2011162706 |
| OPPOSITION | US2011174374 |
| OPPOSITION | US2011284064 |
| OPPOSITION | US2012055547 |
| OPPOSITION | US2012318340 |
| OPPOSITION | US2013247976 |
| OPPOSITION | WO2010151478 |
| OPPOSITION | WO2012030019 |
| SEARCH | EP2387079 |
| SEARCH | US2009215218 |
| SEARCH | US2011284064 |
| SEARCH | US2012318340 |
The dossier documents provide a comprehensive record of the patent's prosecution history - including filings, correspondence, and decisions made by patent offices - and are crucial for understanding the patent's legal journey and any challenges it may have faced during examination.
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General authorisation
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General authorisation
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Letter accompanying subsequently filed items
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Decision to grant a European patent
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Letter concerning fees and payments
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Filing of the translations of the claims
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French translation of claims
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German translation of the claims
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Intention to grant (signatures)
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Text intended for grant (clean copy)
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Oral proceedings: reply to date proposed
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Letter accompanying subsequently filed items
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Communication from the Examining Division
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Communication from the Examining Division
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Examination started
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Submission concerning representation
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Amended claims with annotations
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Jan 29, 2015
Amendments received before examination
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Oct 13, 2014
Sep 10, 2014
Notification of forthcoming publication
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Jul 4, 2014
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European search opinion
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European search report
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Jun 23, 2014
Search started
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Jun 11, 2014
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Communication to designated inventor
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Communication to designated inventor
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Communication to designated inventor
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Communication to designated inventor
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Apr 2, 2014
Abstract
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Designation of inventor
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Drawings
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Payment of fees and costs
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Apr 2, 2014
Request for grant of a European patent
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