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The patent EP2958871 was granted to Saint Gobain on Mar 10, 2021. The application was filed on Dec 19, 2013 under application number EP13811519A. The patent is currently recorded with a legal status of "Granted And Under Opposition".

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 |
|---|---|---|---|
| PILKINGTON GROUP | Dec 10, 2021 | FORTT | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| EXAMINATION | BE1010321 |
| EXAMINATION | US2004219368 |
| INTERNATIONAL-SEARCH-REPORT | EP0536607 |
| INTERNATIONAL-SEARCH-REPORT | EP2141135 |
| INTERNATIONAL-SEARCH-REPORT | US6572990 |
| INTERNATIONAL-SEARCH-REPORT | WO2006043026 |
| INTERNATIONAL-SEARCH-REPORT | WO2011105991 |
| INTERNATIONAL-SEARCH-REPORT | WO2012022876 |
| OPPOSITION | US2001031365 |
| OPPOSITION | US2003215648 |
| OPPOSITION | US2006188730 |
| OPPOSITION | US2008070045 |
| OPPOSITION | US6265076 |
| OPPOSITION | US6838178 |
| OPPOSITION | WO2005007592 |
| OPPOSITION | WO2011105991 |
| OPPOSITION | WO2012022876 |
| OPPOSITION | WO2013131667 |
| OPPOSITION | WO2014127868 |
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.
Date
Description
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Oct 8, 2025
Refund of fees
Appeal
Oct 7, 2025
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(Electronic) Receipt
Appeal
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(Electronic) Receipt
Appeal
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Appeal
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(Electronic) Receipt
Appeal
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Reply to appeal
Appeal
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(Electronic) Receipt
Appeal
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(Electronic) Receipt
Appeal
May 15, 2024
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Notice of appeal
Appeal
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Means of redress
OPPO
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Decision to grant a European patent
Search/Exam
Jan 27, 2021
(Electronic) Receipt
Search/Exam
Jan 27, 2021
English translation of the claims
Search/Exam
Jan 27, 2021
French translation of claims
Search/Exam
Jan 27, 2021
Letter accompanying subsequently filed items
Search/Exam
Sep 17, 2020
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Intention to grant (signatures)
Search/Exam
Sep 17, 2020
Text intended for grant (clean copy)
Search/Exam
Sep 17, 2020
Aug 3, 2020
Decision to allow further processing
Search/Exam
Jul 8, 2020
(Electronic) Receipt
Search/Exam
Jul 8, 2020
Letter accompanying subsequently filed items
Search/Exam
Jul 8, 2020
May 11, 2020
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Letter accompanying subsequently filed items
Search/Exam
May 5, 2020
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Feb 21, 2020
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Intention to grant (signatures)
Search/Exam
Feb 21, 2020
Text intended for grant (clean copy)
Search/Exam
Feb 21, 2020
Mar 25, 2019
(Electronic) Receipt
Search/Exam
Mar 25, 2019
Letter accompanying subsequently filed items
Search/Exam
Mar 25, 2019
Jan 29, 2019
Jan 24, 2019
Sep 14, 2018
Annex to the communication
Search/Exam
Sep 14, 2018
Communication from the Examining Division
Search/Exam
Sep 13, 2017
(Electronic) Receipt
Search/Exam
Sep 13, 2017
Amended claims with annotations
Search/Exam
Sep 13, 2017
Amended description with annotations
Search/Exam
Sep 13, 2017
Claims
Search/Exam
Sep 13, 2017
Description
Search/Exam
Sep 13, 2017
Letter accompanying subsequently filed items
Search/Exam
Sep 13, 2017
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Mar 8, 2017
Annex to the communication
Search/Exam
Mar 8, 2017
Communication from the Examining Division
Search/Exam
Mar 2, 2017
Examination started
Search/Exam
May 1, 2016
(Electronic) Receipt
Search/Exam
May 1, 2016
May 1, 2016
Amended claims with annotations
Search/Exam
May 1, 2016
Amendments received before examination
Search/Exam
May 1, 2016
Letter accompanying subsequently filed items
Search/Exam
Dec 2, 2015
Oct 22, 2015
Oct 15, 2015
Priority search results copy provided by EPO
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Sep 25, 2015
Communication to designated inventor
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Sep 25, 2015
Communication to designated inventor
Search/Exam
Sep 9, 2015
Aug 18, 2015
(Electronic) Receipt
Search/Exam
Aug 18, 2015
Request for entry into the European phase
Search/Exam
Jul 3, 2015
Information on entry into European phase
Search/Exam
Sep 16, 2014
Aug 28, 2014
Copy of the international search report
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Aug 28, 2014
Copy of the international search report
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Aug 28, 2014
Published international application - A1
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Jan 31, 2014
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Dec 19, 2013
(Electronic) Receipt
PCTRO
Dec 19, 2013
Abstract
PCTRO
Dec 19, 2013
Claims
PCTRO
Dec 19, 2013
Description
PCTRO
Dec 19, 2013
Drawings
PCTRO
Dec 19, 2013