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The patent EP2176184 was granted to Knauf Insulation on Dec 29, 2021. The application was filed on Aug 1, 2008 under application number EP08786800A. 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 | Sep 29, 2022 | MEISSNER BOLTE PARTNERSCHAFT MBB | ADMISSIBLE |
| SAINT GOBAIN | Sep 27, 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 |
|---|---|
| INTERNATIONAL-SEARCH-REPORT | EP0044614 |
| INTERNATIONAL-SEARCH-REPORT | EP0547819 |
| INTERNATIONAL-SEARCH-REPORT | US2007027283 |
| INTERNATIONAL-SEARCH-REPORT | WO2007024020 |
| OPPOSITION | CA2062892 |
| OPPOSITION | EP0547819 |
| OPPOSITION | GB457842 |
| OPPOSITION | GB770561 |
| OPPOSITION | US2965504 |
| OPPOSITION | US5318990 |
| OPPOSITION | US8940089 |
| OPPOSITION | WO2006044302 |
| OPPOSITION | WO2007014236 |
| OPPOSITION | WO2007024020 |
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 2, 2021
Decision to grant a European patent
Search/Exam
Nov 22, 2021
(Electronic) Receipt
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Nov 22, 2021
Filing of the translations of the claims
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Nov 22, 2021
French translation of claims
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Nov 22, 2021
German translation of the claims
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Nov 22, 2021
Letter accompanying subsequently filed items
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Aug 6, 2021
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Intention to grant (signatures)
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Text intended for grant (clean copy)
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(Electronic) Receipt
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Jul 19, 2021
Claims
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Jul 19, 2021
Letter accompanying subsequently filed items
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Intention to grant (signatures)
Search/Exam
Mar 24, 2021
Text intended for grant (clean copy)
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Mar 24, 2021
Feb 26, 2021
(Electronic) Receipt
Search/Exam
Feb 26, 2021
Amended claims with annotations
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Feb 26, 2021
Amended description with annotations
Search/Exam
Feb 26, 2021
Claims
Search/Exam
Feb 26, 2021
Description
Search/Exam
Feb 26, 2021
Letter accompanying subsequently filed items
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Feb 26, 2021
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Intention to grant (signatures)
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Oct 22, 2020
Text intended for grant (clean copy)
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Oct 22, 2020
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(Electronic) Receipt
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Jun 5, 2020
Amended claims with annotations
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Jun 5, 2020
Claims
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Jun 5, 2020
Letter accompanying subsequently filed items
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(Electronic) Receipt
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Mar 12, 2020
Letter accompanying subsequently filed items
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Mar 12, 2020
Nov 25, 2019
Annex to the communication
Search/Exam
Nov 25, 2019
Communication from the Examining Division
Search/Exam
Mar 19, 2019
Mar 5, 2019
(Electronic) Receipt
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Mar 5, 2019
Enquiry as to the processing of the file
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Mar 5, 2019
Letter accompanying subsequently filed items
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Aug 23, 2017
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(Electronic) Receipt
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Oct 17, 2016
Annex
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Oct 17, 2016
Claims
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Oct 17, 2016
Letter accompanying subsequently filed items
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Oct 17, 2016
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(Electronic) Receipt
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Aug 8, 2016
Letter accompanying subsequently filed items
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Aug 8, 2016
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Annex to the communication
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Apr 14, 2016
Communication from the Examining Division
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Apr 7, 2016
Examination started
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Mar 24, 2010
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Notification of the recording of a change
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Feb 9, 2010
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(Electronic) Receipt
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Feb 2, 2010
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Request for entry into the European phase
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Jan 27, 2010
Notification of the recording of a change
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Dec 16, 2009
Information on entry into European phase
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Aug 28, 2009
Notification of the recording of a change
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Copy of the international search report
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Feb 12, 2009
Published international application - A1
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