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The patent EP1827687 was granted to W R Grace & Conn on Nov 6, 2024. The application was filed on Nov 3, 2005 under application number EP05851353A. The patent is currently recorded with a legal status of "Patent Maintained As Amended".

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 |
|---|---|---|---|
| ALBEMARLE NETHERLANDS | Apr 18, 2019 | HOYNG ROKH MONEGIER | - |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| EXAMINATION | WO0031215 |
| INTERNATIONAL-SEARCH-REPORT | DE4114874 |
| INTERNATIONAL-SEARCH-REPORT | EP0229609 |
| INTERNATIONAL-SEARCH-REPORT | US3758403 |
| INTERNATIONAL-SEARCH-REPORT | US4289606 |
| INTERNATIONAL-SEARCH-REPORT | US5382351 |
| INTERNATIONAL-SEARCH-REPORT | US5997728 |
| OPPOSITION | US5358918 |
| OPPOSITION | US6566293 |
| OPPOSITION | WO0031215 |
| OPPOSITION | WO9841595 |
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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Oct 10, 2024
Oct 10, 2024
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May 30, 2024
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Mar 11, 2024
Refund of fees
Appeal
Mar 6, 2024
Mar 6, 2024
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Mar 1, 2024
Mar 1, 2024
Feb 29, 2024
Feb 28, 2024
(Electronic) Receipt
Appeal
Feb 28, 2024
Feb 28, 2024
Withdrawal of an appeal
Appeal
Oct 6, 2023
Oct 6, 2023
Oct 4, 2023
Oct 4, 2023
Oct 2, 2023
(Electronic) Receipt
Appeal
Oct 2, 2023
Oct 2, 2023
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Sep 27, 2023
(Electronic) Receipt
Appeal
Sep 27, 2023
Sep 27, 2023
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Sep 12, 2023
Sep 11, 2023
(Electronic) Receipt
Appeal
Sep 11, 2023
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Sep 7, 2023
(Electronic) Receipt
Appeal
Sep 7, 2023
Sep 7, 2023
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(Electronic) Receipt
Appeal
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Reply to appeal
Appeal
Mar 3, 2022
Feb 25, 2022
(Electronic) Receipt
Appeal
Feb 25, 2022
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Dec 20, 2021
(Electronic) Receipt
Appeal
Dec 20, 2021
Dec 20, 2021
Notice of appeal
Appeal
Oct 26, 2021
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Means of redress
OPPO
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Jul 30, 2018
Jun 21, 2018
Decision to grant a European patent
Search/Exam
Jun 7, 2018
(Electronic) Receipt
Search/Exam
Jun 7, 2018
Filing of the translations of the claims
Search/Exam
Jun 7, 2018
Letter accompanying subsequently filed items
Search/Exam
Apr 13, 2018
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Intention to grant (signatures)
Search/Exam
Apr 13, 2018
Text intended for grant (clean copy)
Search/Exam
Apr 13, 2018
Mar 22, 2018
(Electronic) Receipt
Search/Exam
Mar 22, 2018
Amended claims with annotations
Search/Exam
Mar 22, 2018
Claims
Search/Exam
Mar 22, 2018
French translation of claims
Search/Exam
Mar 22, 2018
German translation of the claims
Search/Exam
Mar 22, 2018
Letter accompanying subsequently filed items
Search/Exam
Mar 22, 2018
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Nov 16, 2017
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Intention to grant (signatures)
Search/Exam
Nov 16, 2017
Text intended for grant (clean copy)
Search/Exam
Nov 16, 2017
Aug 22, 2017
(Electronic) Receipt
Search/Exam
Aug 22, 2017
Letter accompanying subsequently filed items
Search/Exam
Aug 22, 2017
Jun 19, 2017
Jun 12, 2017
(Electronic) Receipt
Search/Exam
Jun 12, 2017
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Letter accompanying subsequently filed items
Search/Exam
Jun 12, 2017
Jun 7, 2017
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Feb 13, 2017
Annex to the communication
Search/Exam
Feb 13, 2017
Communication from the Examining Division
Search/Exam
Jul 8, 2016
Jun 30, 2016
(Electronic) Receipt
Search/Exam
Jun 30, 2016
Jun 30, 2016
Letter accompanying subsequently filed items
Search/Exam
Jun 27, 2014
(Electronic) Receipt
Search/Exam
Jun 27, 2014
Amended claims with annotations
Search/Exam
Jun 27, 2014
Amended description with annotations
Search/Exam
Jun 27, 2014
Claims
Search/Exam
Jun 27, 2014
Description
Search/Exam
Jun 27, 2014
Description
Search/Exam
Jun 27, 2014
Letter accompanying subsequently filed items
Search/Exam
Jun 27, 2014
May 2, 2014
Apr 25, 2014
(Electronic) Receipt
Search/Exam
Apr 25, 2014
Letter accompanying subsequently filed items
Search/Exam
Apr 25, 2014
Dec 20, 2013
Annex to the communication
Search/Exam
Dec 20, 2013
Communication from the Examining Division
Search/Exam
Nov 6, 2013
Oct 25, 2013
(Electronic) Receipt
Search/Exam
Oct 25, 2013
Oct 25, 2013
Letter accompanying subsequently filed items
Search/Exam
Oct 25, 2013
Submission concerning representation
Search/Exam
Mar 14, 2012
Mar 12, 2012
Submission concerning representation
Search/Exam
Nov 3, 2009
Description
Search/Exam
Nov 3, 2009
Nov 2, 2009
Cover sheet for fax transmission
Search/Exam
Nov 2, 2009
Description
Search/Exam
Nov 2, 2009
Aug 27, 2009
Aug 17, 2009
Apr 21, 2009
Annex to the communication
Search/Exam
Apr 21, 2009
Communication from the Examining Division
Search/Exam
Nov 8, 2007
Letter concerning the inventor
Search/Exam
Aug 24, 2007
Aug 8, 2007
Jul 31, 2007
Letter which had not been notified
Search/Exam
Jul 19, 2007
Jun 4, 2007
Jun 4, 2007
Claims
Search/Exam
Jun 4, 2007
Matter concerning the application
Search/Exam
Jun 4, 2007
Request for entry into the European phase
Search/Exam
May 25, 2007
Mar 16, 2007
Information on entry into European phase
Search/Exam
May 30, 2006
May 11, 2006
Copy of the international search report
Search/Exam
May 11, 2006
Published international application - A1
Search/Exam
Feb 16, 2006
Abstract
PCTISA
Feb 16, 2006
Claims
PCTISA
Feb 16, 2006
Description
PCTISA
Feb 16, 2006
Drawings
PCTISA
Feb 16, 2006