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The patent EP2953446 was granted to Rockwool on Oct 6, 2021. The application was filed on Feb 7, 2014 under application number EP14703819A. 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 |
|---|---|---|---|
| SAINT GOBAIN | Jul 6, 2022 | SAINT GOBAIN RECHERCHE | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | EP0392639 |
| DESCRIPTION | US2011273196 |
| DESCRIPTION | WO2010031773 |
| INTERNATIONAL-SEARCH-REPORT | EP0392639 |
| INTERNATIONAL-SEARCH-REPORT | US2011273196 |
| INTERNATIONAL-SEARCH-REPORT | WO2010031773 |
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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Dec 22, 2025
Dec 19, 2025
(Electronic) Receipt
Appeal
Dec 19, 2025
(Electronic) Receipt
Appeal
Dec 19, 2025
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Jul 31, 2025
(Electronic) Receipt
Appeal
Jul 31, 2025
Advice of delivery
Appeal
Jul 24, 2025
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(Electronic) Receipt
Appeal
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Claims
Appeal
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Appeal
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Appeal
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Appeal
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Appeal
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Appeal
Jul 5, 2024
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Appeal
Jul 5, 2024
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Reply to appeal
Appeal
Mar 5, 2024
Feb 29, 2024
(Electronic) Receipt
Appeal
Feb 29, 2024
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Dec 28, 2023
(Electronic) Receipt
Appeal
Dec 28, 2023
Notice of appeal
Appeal
Dec 28, 2023
Notice of appeal
Appeal
Oct 30, 2023
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Means of redress
OPPO
Oct 30, 2023
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OPPO
Nov 30, 2022
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Nov 30, 2022
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OPPO
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Oct 19, 2021
Sep 9, 2021
Decision to grant a European patent
Search/Exam
Aug 31, 2021
Change to the inventor details
Search/Exam
Aug 24, 2021
(Electronic) Receipt
Search/Exam
Aug 24, 2021
French translation of claims
Search/Exam
Aug 24, 2021
German translation of the claims
Search/Exam
Aug 24, 2021
Letter accompanying subsequently filed items
Search/Exam
May 3, 2021
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Intention to grant (signatures)
Search/Exam
May 3, 2021
Text intended for grant (clean copy)
Search/Exam
May 3, 2021
Mar 11, 2021
Examination started
Search/Exam
Jan 11, 2017
Jan 4, 2017
Mar 2, 2016
Refund of fees
Search/Exam
Feb 18, 2016
(Electronic) Receipt
Search/Exam
Feb 18, 2016
Feb 18, 2016
Amended claims with annotations
Search/Exam
Feb 18, 2016
Feb 18, 2016
Amended description with annotations
Search/Exam
Feb 18, 2016
Amendments received before examination
Search/Exam
Feb 18, 2016
Annex
Search/Exam
Feb 18, 2016
Letter accompanying subsequently filed items
Search/Exam
Feb 4, 2016
Jan 30, 2016
Nov 18, 2015
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Sep 11, 2015
Communication to designated inventor
Search/Exam
Sep 11, 2015
Priority search results copy provided by EPO
Search/Exam
Aug 25, 2015
Aug 24, 2015
(Electronic) Receipt
Search/Exam
Aug 24, 2015
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Letter concerning the inventor
Search/Exam
Aug 18, 2015
Aug 5, 2015
Letter concerning the priority
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Aug 5, 2015
Priority document
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Jul 16, 2015
(Electronic) Receipt
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Jul 16, 2015
Request for entry into the European phase
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Jun 19, 2015
Information on entry into European phase
Search/Exam
Aug 14, 2014
Copy of the international search report
Search/Exam
Aug 14, 2014
Published international application - A1
Search/Exam
Apr 14, 2014
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Apr 14, 2014
Feb 7, 2014
(Electronic) Receipt
PCTRO
Feb 7, 2014
Abstract
PCTRO
Feb 7, 2014
Claims
PCTRO
Feb 7, 2014
Description
PCTRO
Feb 7, 2014
Drawings
PCTRO