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The patent EP3445809 was granted to Lanxess Deutschland on Jan 22, 2020. The application was filed on Mar 29, 2017 under application number EP17712808A. 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 |
|---|---|---|---|
| JOHNS MANVILLE | Oct 22, 2020 | DORR | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | DE10117715 |
| DESCRIPTION | WO2012045806 |
| DESCRIPTION | WO2014086757 |
| INTERNATIONAL-SEARCH-REPORT | DE69713193T |
| INTERNATIONAL-SEARCH-REPORT | WO2013144132 |
| OPPOSITION | EP2093246 |
| OPPOSITION | EP2716716 |
| OPPOSITION | EP3130622 |
| OPPOSITION | US2012088899 |
| OPPOSITION | US2013261282 |
| OPPOSITION | US5804638 |
| OPPOSITION | WO2013034499 |
| OPPOSITION | WO2013144132 |
| OPPOSITION | WO2014086757 |
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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Jul 22, 2024
Jul 22, 2024
Jul 22, 2024
Apr 25, 2024
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Apr 18, 2024
Apr 17, 2024
(Electronic) Receipt
Appeal
Apr 17, 2024
Apr 17, 2024
Apr 17, 2024
Mar 12, 2024
Mar 6, 2024
(Electronic) Receipt
Appeal
Mar 6, 2024
Mar 6, 2024
Feb 28, 2024
Feb 28, 2024
Sep 20, 2023
Sep 20, 2023
Aug 16, 2023
Aug 10, 2023
(Electronic) Receipt
Appeal
Aug 10, 2023
Aug 10, 2023
Jul 7, 2023
Jul 4, 2023
(Electronic) Receipt
Appeal
Jul 4, 2023
Jul 4, 2023
Jun 20, 2023
(Electronic) Receipt
Appeal
Jun 20, 2023
Jun 20, 2023
Jun 15, 2023
Jun 15, 2023
Jun 15, 2023
Jun 15, 2023
Jun 12, 2023
Jun 12, 2023
Nov 17, 2022
Nov 14, 2022
(Electronic) Receipt
Appeal
Nov 14, 2022
Nov 14, 2022
Reply to appeal
Appeal
Jul 14, 2022
Jul 11, 2022
(Electronic) Receipt
Appeal
Jul 11, 2022
Jul 11, 2022
Jul 11, 2022
Jul 11, 2022
Jul 11, 2022
May 9, 2022
May 9, 2022
May 2, 2022
(Electronic) Receipt
Appeal
May 2, 2022
May 2, 2022
Notice of appeal
Appeal
Mar 7, 2022
Mar 2, 2022
Feb 28, 2022
Feb 28, 2022
Feb 28, 2022
Feb 28, 2022
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Feb 28, 2022
Means of redress
OPPO
Feb 28, 2022
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Feb 1, 2022
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Feb 3, 2020
Jan 8, 2020
Decision to grant a European patent
Search/Exam
Dec 5, 2019
(Electronic) Receipt
Search/Exam
Dec 5, 2019
English translation of the claims
Search/Exam
Dec 5, 2019
Filing of the translations of the claims
Search/Exam
Dec 5, 2019
French translation of claims
Search/Exam
Dec 5, 2019
Letter accompanying subsequently filed items
Search/Exam
Sep 20, 2019
Sep 20, 2019
Sep 20, 2019
Intention to grant (signatures)
Search/Exam
Sep 20, 2019
Text intended for grant (clean copy)
Search/Exam
Sep 20, 2019
Aug 22, 2019
Examination started
Search/Exam
Jan 30, 2019
Dec 27, 2018
(Electronic) Receipt
Search/Exam
Dec 27, 2018
Dec 27, 2018
Amended claims with annotations
Search/Exam
Dec 27, 2018
Dec 27, 2018
Amended description with annotations
Search/Exam
Dec 27, 2018
Amendments received before examination
Search/Exam
Dec 27, 2018
Letter accompanying subsequently filed items
Search/Exam
Nov 29, 2018
Nov 27, 2018
Communication to designated inventor
Search/Exam
Nov 27, 2018
Communication to designated inventor
Search/Exam
Nov 27, 2018
Communication to designated inventor
Search/Exam
Nov 27, 2018
Communication to designated inventor
Search/Exam
Nov 27, 2018
Communication to designated inventor
Search/Exam
Nov 22, 2018
Priority search results copy provided by EPO
Search/Exam
Nov 7, 2018
Oct 25, 2018
Information regarding early processing
Search/Exam
Sep 27, 2018
(Electronic) Receipt
Search/Exam
Sep 27, 2018
Request for entry into the European phase
Search/Exam
Aug 31, 2018
Information on entry into European phase
Search/Exam
Nov 13, 2017
Oct 26, 2017
Copy of the international search report
Search/Exam
Oct 26, 2017
Copy of the international search report
Search/Exam
Oct 26, 2017
Published international application - A1
Search/Exam
Jun 20, 2017
ISR: cited documents
PCTISA
Jun 20, 2017
Jun 20, 2017
Jun 19, 2017
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Jun 19, 2017
Apr 4, 2017
Apr 4, 2017
Apr 4, 2017
Mar 31, 2017
Mar 29, 2017
(Electronic) Receipt
PCTRO
Mar 29, 2017
Abstract
PCTRO
Mar 29, 2017
Claims
PCTRO
Mar 29, 2017
Description
PCTRO
Mar 29, 2017
Mar 29, 2017
Drawings
PCTRO
Mar 29, 2017
Mar 29, 2017