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The patent EP1710280 was granted to Kaneka on May 16, 2018. The application was filed on Jan 26, 2005 under application number EP05709364A. 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 |
|---|---|---|---|
| HENKEL | Feb 15, 2019 | - | ADMISSIBLE |
| WACKER CHEMIE | Feb 14, 2019 | MIESKES | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| INTERNATIONAL-SEARCH-REPORT | EP1285946 |
| INTERNATIONAL-SEARCH-REPORT | JP2003096195 |
| INTERNATIONAL-SEARCH-REPORT | WO03000749 |
| INTERNATIONAL-SEARCH-REPORT | WO03011978 |
| OPPOSITION | JP2001055503 |
| OPPOSITION | JP2001072855 |
| OPPOSITION | JP2002356613 |
| OPPOSITION | JPH0457850 |
| OPPOSITION | JPH10251552 |
| OPPOSITION | US2003229192 |
| OPPOSITION | US2003232950 |
| OPPOSITION | WO03011978 |
| SEARCH | EP0485057 |
| SEARCH | EP1285946 |
| SEARCH | WO03000749 |
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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Means of redress
OPPO
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Description
OPPO
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Advice of delivery
Appeal
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(Electronic) Receipt
Appeal
Feb 13, 2023
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(Electronic) Receipt
Appeal
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Sep 30, 2021
(Electronic) Receipt
Appeal
Sep 30, 2021
Sep 30, 2021
Sep 30, 2021
Sep 30, 2021
Reply to appeal
Appeal
Jun 1, 2021
Jun 1, 2021
May 26, 2021
(Electronic) Receipt
Appeal
May 26, 2021
May 26, 2021
Feb 11, 2021
Feb 11, 2021
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Feb 4, 2021
(Electronic) Receipt
Appeal
Feb 4, 2021
Feb 4, 2021
Notice of appeal
Appeal
Jan 25, 2021
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Means of redress
OPPO
Jan 19, 2021
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OPPO
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May 30, 2018
Apr 19, 2018
Decision to grant a European patent
Search/Exam
Apr 6, 2018
(Electronic) Receipt
Search/Exam
Apr 6, 2018
Filing of the translations of the claims
Search/Exam
Apr 6, 2018
French translation of claims
Search/Exam
Apr 6, 2018
German translation of the claims
Search/Exam
Apr 6, 2018
Letter accompanying subsequently filed items
Search/Exam
Jan 11, 2018
Jan 11, 2018
Jan 11, 2018
Intention to grant (signatures)
Search/Exam
Jan 11, 2018
Text intended for grant (clean copy)
Search/Exam
Jan 11, 2018
Jun 23, 2016
(Electronic) Receipt
Search/Exam
Jun 23, 2016
Amended description with annotations
Search/Exam
Jun 23, 2016
Description
Search/Exam
Jun 23, 2016
Letter accompanying subsequently filed items
Search/Exam
Jun 23, 2016
Feb 23, 2016
Annex to the communication
Search/Exam
Feb 23, 2016
Communication from the Examining Division
Search/Exam
Jun 10, 2014
(Electronic) Receipt
Search/Exam
Jun 10, 2014
Amended claims with annotations
Search/Exam
Jun 10, 2014
Claims
Search/Exam
Jun 10, 2014
Letter accompanying subsequently filed items
Search/Exam
Jun 10, 2014
Feb 21, 2014
Annex to the communication
Search/Exam
Feb 21, 2014
Communication from the Examining Division
Search/Exam
Jun 27, 2013
Apr 2, 2013
(Electronic) Receipt
Search/Exam
Apr 2, 2013
Description
Search/Exam
Apr 2, 2013
Letter accompanying subsequently filed items
Search/Exam
Apr 2, 2013
Jan 30, 2013
Jan 30, 2013
Dec 16, 2010
(Electronic) Receipt
Search/Exam
Dec 16, 2010
Claims
Search/Exam
Dec 16, 2010
Letter accompanying subsequently filed items
Search/Exam
Dec 16, 2010
Nov 26, 2010
Nov 22, 2010
(Electronic) Receipt
Search/Exam
Nov 22, 2010
Letter accompanying subsequently filed items
Search/Exam
Nov 22, 2010
Jul 15, 2010
Annex to the communication
Search/Exam
Jul 15, 2010
Communication from the Examining Division
Search/Exam
Jun 18, 2010
(Electronic) Receipt
Search/Exam
Jun 18, 2010
Letter accompanying subsequently filed items
Search/Exam
Jun 18, 2010
Maintenance of the application
Search/Exam
Jun 10, 2010
Jun 10, 2010
Jun 2, 2010
(Electronic) Receipt
Search/Exam
Jun 2, 2010
Letter accompanying subsequently filed items
Search/Exam
Jun 2, 2010
Maintenance of the application
Search/Exam
May 4, 2010
Apr 16, 2010
Apr 16, 2010
Supplementary European search report
Search/Exam
Mar 19, 2010
(Electronic) Receipt
Search/Exam
Mar 19, 2010
Mar 19, 2010
Letter accompanying subsequently filed items
Search/Exam
Sep 13, 2006
Notification of forthcoming publication
Search/Exam
Sep 11, 2006
Aug 22, 2006
Aug 17, 2006
Aug 1, 2006
Abstract
Search/Exam
Aug 1, 2006
Aug 1, 2006
Claims
Search/Exam
Aug 1, 2006
Description
Search/Exam
Aug 1, 2006
Drawings
Search/Exam
Aug 1, 2006
Request for entry into the European phase
Search/Exam
Jun 19, 2006
Information on entry into European phase
Search/Exam
Aug 30, 2005
Aug 11, 2005
Copy of the international search report
Search/Exam
Aug 11, 2005
Aug 11, 2005
Published international application - A1
Search/Exam