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The patent EP2890749 was granted to Armstrong World Industries on May 16, 2018. The application was originally filed on Aug 30, 2013 under application number EP13770989A. 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 |
|---|---|---|---|
| AKZO NOBEL | Jan 9, 2019 | AKZO NOBEL DEPARTMENT | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| EXAMINATION | WO2012006199 |
| INTERNATIONAL-SEARCH-REPORT | EP0152179 |
| INTERNATIONAL-SEARCH-REPORT | EP1136538 |
| INTERNATIONAL-SEARCH-REPORT | WO2006028518 |
| INTERNATIONAL-SEARCH-REPORT | WO2012006200 |
| OPPOSITION | US2012094129 |
| OPPOSITION | WO03046661 |
| OPPOSITION | WO2014036462 |
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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Jan 15, 2024
Jan 15, 2024
Jan 15, 2024
Oct 20, 2023
Oct 20, 2023
Oct 19, 2023
Sep 1, 2023
Aug 31, 2023
(Electronic) Receipt
Appeal
Aug 31, 2023
Aug 31, 2023
Aug 4, 2023
Aug 4, 2023
Aug 1, 2023
May 3, 2023
May 3, 2023
Dec 8, 2022
Dec 8, 2022
Dec 8, 2022
Dec 8, 2022
Dec 5, 2022
Dec 5, 2022
Nov 4, 2022
(Electronic) Receipt
Appeal
Nov 4, 2022
Apr 9, 2021
Apr 1, 2021
(Electronic) Receipt
Appeal
Apr 1, 2021
Apr 1, 2021
Reply to appeal
Appeal
Dec 3, 2020
Nov 27, 2020
Nov 24, 2020
Nov 17, 2020
(Electronic) Receipt
Appeal
Nov 17, 2020
Nov 17, 2020
Nov 17, 2020
Nov 17, 2020
Nov 17, 2020
Nov 17, 2020
Nov 17, 2020
Nov 17, 2020
Nov 17, 2020
Nov 17, 2020
Description
Appeal
Nov 17, 2020
Description
Appeal
Nov 17, 2020
Nov 17, 2020
Nov 17, 2020
Sep 24, 2020
Sep 24, 2020
Sep 15, 2020
(Electronic) Receipt
Appeal
Sep 15, 2020
Sep 15, 2020
Notice of appeal
Appeal
Jul 20, 2020
Jul 13, 2020
Jul 7, 2020
Jul 7, 2020
Jul 7, 2020
Jul 7, 2020
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Jul 7, 2020
Jul 7, 2020
Means of redress
OPPO
Jul 7, 2020
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Jun 22, 2020
Jun 5, 2020
May 28, 2020
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May 15, 2020
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Description
OPPO
Apr 22, 2020
Description
OPPO
Apr 22, 2020
Description
OPPO
Apr 22, 2020
Description
OPPO
Apr 22, 2020
Apr 22, 2020
Apr 21, 2020
Apr 21, 2020
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Nov 27, 2019
Nov 22, 2019
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Jul 15, 2019
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Feb 27, 2019
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Jan 9, 2019
Jan 9, 2019
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Jan 9, 2019
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Jan 9, 2019
Jan 9, 2019
May 30, 2018
Apr 19, 2018
Decision to grant a European patent
Search/Exam
Mar 28, 2018
(Electronic) Receipt
Search/Exam
Mar 28, 2018
Filing of the translations of the claims
Search/Exam
Mar 28, 2018
French translation of claims
Search/Exam
Mar 28, 2018
German translation of the claims
Search/Exam
Mar 28, 2018
Letter accompanying subsequently filed items
Search/Exam
Nov 28, 2017
Nov 28, 2017
Nov 28, 2017
Intention to grant (signatures)
Search/Exam
Nov 28, 2017
Text intended for grant (clean copy)
Search/Exam
Nov 28, 2017
Jun 14, 2017
(Electronic) Receipt
Search/Exam
Jun 14, 2017
Amended claims with annotations
Search/Exam
Jun 14, 2017
Amended description with annotations
Search/Exam
Jun 14, 2017
Claims
Search/Exam
Jun 14, 2017
Description
Search/Exam
Jun 14, 2017
Letter accompanying subsequently filed items
Search/Exam
Jun 14, 2017
Feb 6, 2017
Annex to the communication
Search/Exam
Feb 6, 2017
Communication from the Examining Division
Search/Exam
Jan 30, 2017
Examination started
Search/Exam
Nov 6, 2015
(Electronic) Receipt
Search/Exam
Nov 6, 2015
Nov 6, 2015
Amended claims with annotations
Search/Exam
Nov 6, 2015
Nov 6, 2015
Amended description with annotations
Search/Exam
Nov 6, 2015
Amendments received before examination
Search/Exam
Nov 6, 2015
Letter accompanying subsequently filed items
Search/Exam
Jun 10, 2015
May 7, 2015
Apr 9, 2015
Communication to designated inventor
Search/Exam
Apr 9, 2015
Communication to designated inventor
Search/Exam
Apr 9, 2015
Communication to designated inventor
Search/Exam
Mar 30, 2015
(Electronic) Receipt
Search/Exam
Mar 30, 2015
Mar 30, 2015
Request for entry into the European phase
Search/Exam
Mar 17, 2015
Jan 9, 2015
Information on entry into European phase
Search/Exam
Mar 25, 2014
Mar 6, 2014
Copy of the international search report
Search/Exam
Mar 6, 2014
Published international application - A1
Search/Exam
Nov 18, 2013
Nov 18, 2013
Nov 18, 2013