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The patent EP2928935 was granted to Knauf Insulation on Mar 31, 2021. The application was filed on Dec 3, 2013 under application number EP13798703A. The patent is currently recorded with a legal status of "Revoked".

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 |
|---|---|---|---|
| BASF | Dec 22, 2021 | EISENFUHR SPEISER | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| INTERNATIONAL-SEARCH-REPORT | EP0839826 |
| INTERNATIONAL-SEARCH-REPORT | US2011046271 |
| INTERNATIONAL-SEARCH-REPORT | WO2011138458 |
| OPPOSITION | EP2386394 |
| OPPOSITION | US3203917 |
| OPPOSITION | WO2011138458 |
| OPPOSITION | WO2012080264 |
| OPPOSITION | WO2013150123 |
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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Aug 23, 2024
Refund of fees
Appeal
Aug 21, 2024
Aug 21, 2024
Aug 14, 2024
Aug 13, 2024
Aug 12, 2024
(Electronic) Receipt
Appeal
Aug 12, 2024
Aug 12, 2024
Withdrawal of an appeal
Appeal
Jun 26, 2024
Jun 26, 2024
Jun 20, 2024
(Electronic) Receipt
Appeal
Jun 20, 2024
Jun 20, 2024
Notice of appeal
Appeal
Apr 22, 2024
Apr 22, 2024
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Means of redress
OPPO
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Dec 22, 2021
Dec 22, 2021
Dec 22, 2021
Dec 22, 2021
Apr 13, 2021
Mar 4, 2021
Decision to grant a European patent
Search/Exam
Feb 17, 2021
(Electronic) Receipt
Search/Exam
Feb 17, 2021
Filing of the translations of the claims
Search/Exam
Feb 17, 2021
French translation of claims
Search/Exam
Feb 17, 2021
German translation of the claims
Search/Exam
Feb 17, 2021
Letter accompanying subsequently filed items
Search/Exam
Nov 26, 2020
Nov 26, 2020
Nov 26, 2020
Intention to grant (signatures)
Search/Exam
Nov 26, 2020
Text intended for grant (clean copy)
Search/Exam
Nov 26, 2020
Aug 21, 2020
(Electronic) Receipt
Search/Exam
Aug 21, 2020
Amended claims with annotations
Search/Exam
Aug 21, 2020
Amended description with annotations
Search/Exam
Aug 21, 2020
Annex
Search/Exam
Aug 21, 2020
Claims
Search/Exam
Aug 21, 2020
Description
Search/Exam
Aug 21, 2020
Letter accompanying subsequently filed items
Search/Exam
Aug 21, 2020
May 14, 2020
Annex to the communication
Search/Exam
May 14, 2020
Communication from the Examining Division
Search/Exam
Oct 3, 2017
Decision to allow further processing
Search/Exam
Sep 21, 2017
(Electronic) Receipt
Search/Exam
Sep 21, 2017
Amended claims with annotations
Search/Exam
Sep 21, 2017
Annex
Search/Exam
Sep 21, 2017
Claims
Search/Exam
Sep 21, 2017
Letter accompanying subsequently filed items
Search/Exam
Sep 21, 2017
Sep 21, 2017
Request for further processing
Search/Exam
Aug 24, 2017
Aug 23, 2017
Aug 18, 2017
Jun 2, 2017
May 23, 2017
(Electronic) Receipt
Search/Exam
May 23, 2017
Letter accompanying subsequently filed items
Search/Exam
May 23, 2017
Mar 21, 2017
Mar 16, 2017
(Electronic) Receipt
Search/Exam
Mar 16, 2017
Letter accompanying subsequently filed items
Search/Exam
Mar 16, 2017
Jan 19, 2017
Jan 13, 2017
(Electronic) Receipt
Search/Exam
Jan 13, 2017
Letter accompanying subsequently filed items
Search/Exam
Jan 13, 2017
Nov 18, 2016
Annex to the communication
Search/Exam
Nov 18, 2016
Communication from the Examining Division
Search/Exam
Nov 8, 2016
Examination started
Search/Exam
Jan 14, 2016
(Electronic) Receipt
Search/Exam
Jan 14, 2016
Jan 14, 2016
Amended claims with annotations
Search/Exam
Jan 14, 2016
Amendments received before examination
Search/Exam
Jan 14, 2016
Letter accompanying subsequently filed items
Search/Exam
Sep 16, 2015
Jul 16, 2015
Jul 14, 2015
Communication to designated inventor
Search/Exam
Jun 23, 2015
Apr 22, 2015
(Electronic) Receipt
Search/Exam
Apr 22, 2015
Request for entry into the European phase
Search/Exam
Apr 17, 2015
Information on entry into European phase
Search/Exam
Jan 30, 2015
Jan 30, 2015
Jan 30, 2015
Notification of the recording of a change
Search/Exam
Jan 30, 2015
Notification of the recording of a change
Search/Exam
Sep 4, 2014
Copy of the international search report
Search/Exam
Sep 4, 2014
Jul 10, 2014
Jul 10, 2014
Jul 10, 2014
Jul 3, 2014
Jun 12, 2014
Published international application - A2
Search/Exam
Dec 3, 2013
(Electronic) Receipt
PCTRO
Dec 3, 2013
Abstract
PCTRO
Dec 3, 2013
Claims
PCTRO
Dec 3, 2013
Description
PCTRO
Dec 3, 2013
Drawings
PCTRO