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The patent EP2826903 was granted to Knauf Insulation on Jun 7, 2023. The application was filed on Jan 25, 2007 under application number EP14184412A. 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 |
|---|---|---|---|
| ROCKWOOL | Jan 25, 2024 | LETZELTER | ADMISSIBLE |
| STM | Jan 25, 2024 | BOTTI & FERRARI | ADMISSIBLE |
| SAINT GOBAIN | Jan 24, 2024 | 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 | WO2006US28929 |
| DESCRIPTION | EP1698598 |
| DESCRIPTION | US5977232 |
| OPPOSITION | DE4005541 |
| OPPOSITION | EP0369848 |
| OPPOSITION | EP0710631 |
| OPPOSITION | EP1720769 |
| OPPOSITION | JP2005299013 |
| OPPOSITION | US1801053 |
| OPPOSITION | US2006005580 |
| OPPOSITION | US2006111480 |
| OPPOSITION | US2007184740 |
| OPPOSITION | US2012168667 |
| OPPOSITION | US4550550 |
| OPPOSITION | US5047452 |
| OPPOSITION | US5371194 |
| OPPOSITION | US5905115 |
| OPPOSITION | US7514027 |
| OPPOSITION | WO0206178 |
| OPPOSITION | WO2005035896 |
| OPPOSITION | WO2005044750 |
| OPPOSITION | WO2006044302 |
| OPPOSITION | WO2007014236 |
| OPPOSITION | WO2007024020 |
| OPPOSITION | WO2008089851 |
| SEARCH | EP0714754 |
| SEARCH | EP1522642 |
| SEARCH | EP1655400 |
| SEARCH | EP1741726 |
| SEARCH | WO2006044302 |
| SEARCH | WO9927206 |
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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(Electronic) Receipt
Search/Exam
May 2, 2023
Annexes in respect of a client data request
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May 2, 2023
Letter accompanying subsequently filed items
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May 2, 2023
Request for correction of the publication
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Mar 30, 2023
Decision to grant a European patent
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Mar 14, 2023
(Electronic) Receipt
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Mar 14, 2023
Filing of the translations of the claims
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Mar 14, 2023
French translation of claims
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Mar 14, 2023
German translation of the claims
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Mar 14, 2023
Letter accompanying subsequently filed items
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Intention to grant (signatures)
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Feb 16, 2023
Text intended for grant (clean copy)
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Feb 16, 2023
Feb 1, 2023
(Electronic) Receipt
Search/Exam
Feb 1, 2023
Amended description with annotations
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Feb 1, 2023
Description
Search/Exam
Feb 1, 2023
Letter accompanying subsequently filed items
Search/Exam
Feb 1, 2023
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Intention to grant (signatures)
Search/Exam
Oct 10, 2022
Text intended for grant (clean copy)
Search/Exam
Oct 10, 2022
Sep 21, 2022
Decision to allow further processing
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Sep 8, 2022
(Electronic) Receipt
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Sep 8, 2022
Amended claims with annotations
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Sep 8, 2022
Claims
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Sep 8, 2022
Letter accompanying subsequently filed items
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Sep 8, 2022
Request for further processing
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Intention to grant (signatures)
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Jan 25, 2022
Text intended for grant (clean copy)
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Jan 25, 2022
Sep 28, 2021
(Electronic) Receipt
Search/Exam
Sep 28, 2021
Amended claims with annotations
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Sep 28, 2021
Amended description with annotations
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Sep 28, 2021
Claims
Search/Exam
Sep 28, 2021
Description
Search/Exam
Sep 28, 2021
Letter accompanying subsequently filed items
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Sep 28, 2021
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Jul 19, 2021
(Electronic) Receipt
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Jul 19, 2021
Letter accompanying subsequently filed items
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Jul 19, 2021
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Annex to the communication
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Mar 19, 2021
Communication from the Examining Division
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Mar 11, 2021
Examination started
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(Electronic) Receipt
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Jul 10, 2015
Amendments received before examination
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Jul 10, 2015
Letter accompanying subsequently filed items
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Jul 10, 2015
Feb 4, 2015
Refund of fees
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Jan 26, 2015
Jan 5, 2015
Notification of forthcoming publication
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Dec 18, 2014
Dec 18, 2014
European search opinion
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Dec 18, 2014
European search report
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Dec 9, 2014
Search started
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Dec 5, 2014
Communication to designated inventor
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Communication to designated inventor
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Dec 5, 2014
Communication to designated inventor
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Sep 11, 2014
Abstract
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Claims
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Sep 11, 2014
Description
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Sep 11, 2014
Designation of inventor
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Designation of inventor
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Designation of inventor
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Sep 11, 2014
Drawings
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Sep 11, 2014
Request for grant of a European patent
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