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The patent EP3137294 was granted to LOW & Bonar on Apr 11, 2018. The application was filed on Apr 28, 2015 under application number EP15721614A. 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 |
|---|---|---|---|
| JOHNS MANVILLE | Jan 8, 2019 | DORR | WITHDRAWN |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | FR2013722 |
| DESCRIPTION | WO0109421 |
| DESCRIPTION | WO2005118947 |
| INTERNATIONAL-SEARCH-REPORT | US2008193697 |
| INTERNATIONAL-SEARCH-REPORT | US3968290 |
| INTERNATIONAL-SEARCH-REPORT | WO0109421 |
| OPPOSITION | EP0806509 |
| OPPOSITION | EP1939342 |
| OPPOSITION | EP2360304 |
| OPPOSITION | US4491617 |
| OPPOSITION | US4539254 |
| OPPOSITION | WO0108879 |
| OPPOSITION | WO0109421 |
| OPPOSITION | WO2009079254 |
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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Description
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Sep 11, 2020
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Apr 23, 2018
Mar 15, 2018
Decision to grant a European patent
Search/Exam
Feb 27, 2018
(Electronic) Receipt
Search/Exam
Feb 27, 2018
Filing of the translations of the claims
Search/Exam
Feb 27, 2018
French translation of claims
Search/Exam
Feb 27, 2018
German translation of the claims
Search/Exam
Feb 27, 2018
Letter accompanying subsequently filed items
Search/Exam
Nov 24, 2017
Nov 24, 2017
Nov 24, 2017
Intention to grant (signatures)
Search/Exam
Nov 24, 2017
Text intended for grant (clean copy)
Search/Exam
Nov 24, 2017
Nov 7, 2017
Examination started
Search/Exam
Apr 12, 2017
Communication to designated inventor
Search/Exam
Apr 5, 2017
(Electronic) Receipt
Search/Exam
Apr 5, 2017
Letter accompanying subsequently filed items
Search/Exam
Apr 5, 2017
Letter concerning the inventor
Search/Exam
Feb 27, 2017
Feb 20, 2017
Letter which had not been notified
Search/Exam
Feb 8, 2017
Jan 17, 2017
Communication to designated inventor
Search/Exam
Jan 11, 2017
(Electronic) Receipt
Search/Exam
Jan 11, 2017
Letter accompanying subsequently filed items
Search/Exam
Jan 11, 2017
Letter concerning the inventor
Search/Exam
Jan 4, 2017
Dec 22, 2016
Letter which had not been notified
Search/Exam
Dec 9, 2016
Dec 7, 2016
Communication to designated inventor
Search/Exam
Dec 7, 2016
Communication to designated inventor
Search/Exam
Dec 7, 2016
Communication to designated inventor
Search/Exam
Dec 7, 2016
Communication to designated inventor
Search/Exam
Dec 7, 2016
Communication to designated inventor
Search/Exam
Dec 7, 2016
Communication to designated inventor
Search/Exam
Dec 7, 2016
Communication to designated inventor
Search/Exam
Dec 7, 2016
Communication to designated inventor
Search/Exam
Dec 2, 2016
Priority search results copy provided by EPO
Search/Exam
Nov 15, 2016
Nov 4, 2016
(Electronic) Receipt
Search/Exam
Nov 4, 2016
Request for entry into the European phase
Search/Exam
Oct 26, 2016
Oct 26, 2016
Notification of the recording of a change
Search/Exam
Sep 9, 2016
Information on entry into European phase
Search/Exam
Dec 8, 2015
Nov 5, 2015
Copy of the international search report
Search/Exam
Nov 5, 2015
Published international application - A1
Search/Exam
Oct 23, 2015
(Electronic) Receipt
PCTRO
Oct 23, 2015
Sep 17, 2015
Sep 17, 2015
Sep 17, 2015
Sep 8, 2015
Apr 28, 2015
(Electronic) Receipt
PCTRO
Apr 28, 2015
Abstract
PCTRO
Apr 28, 2015
Claims
PCTRO
Apr 28, 2015
Description
PCTRO
Apr 28, 2015
Drawings
PCTRO
Apr 28, 2015