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The patent EP1734055 was granted to Shin Etsu Chemical on Apr 26, 2017. The application was filed on Jun 6, 2006 under application number EP06252932A. 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 |
|---|---|---|---|
| THE DOW CHEMICAL | Jan 23, 2018 | N&H EMEA | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | JP132579 |
| DESCRIPTION | JP2001302701 |
| DESCRIPTION | JPS5616501 |
| DESCRIPTION | JPS58103501 |
| OPPOSITION | EP0567869 |
| OPPOSITION | US3734471 |
| SEARCH | DD264001 |
| SEARCH | DE838593 |
| SEARCH | GB1331243 |
| SEARCH | GB1493321 |
| SEARCH | US3273807 |
| SEARCH | US3322748 |
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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Sep 16, 2022
Refund of fees
Search/Exam
Sep 14, 2022
Sep 14, 2022
Sep 9, 2022
Aug 9, 2022
Aug 9, 2022
Aug 9, 2022
Aug 8, 2022
(Electronic) Receipt
Appeal
Aug 8, 2022
Aug 8, 2022
Withdrawal of an appeal
Appeal
Jul 8, 2022
Jul 8, 2022
Dec 6, 2021
(Electronic) Receipt
Appeal
Dec 6, 2021
Advice of delivery
Appeal
Dec 6, 2021
Dec 6, 2021
Dec 6, 2021
Dec 1, 2021
Apr 8, 2021
Jul 9, 2020
Jul 3, 2020
(Electronic) Receipt
Appeal
Jul 3, 2020
Jul 3, 2020
Reply to appeal
Appeal
Apr 15, 2020
Mar 23, 2020
Mar 16, 2020
(Electronic) Receipt
Appeal
Mar 16, 2020
Mar 16, 2020
Mar 16, 2020
Mar 16, 2020
Mar 16, 2020
Mar 16, 2020
Mar 16, 2020
Mar 16, 2020
Mar 16, 2020
Mar 16, 2020
Mar 16, 2020
Mar 16, 2020
Mar 16, 2020
Mar 16, 2020
Claims
Appeal
Mar 16, 2020
Mar 16, 2020
Jan 10, 2020
Jan 10, 2020
Jan 3, 2020
(Electronic) Receipt
Appeal
Jan 3, 2020
Jan 3, 2020
Notice of appeal
Appeal
Nov 13, 2019
Nov 12, 2019
Nov 12, 2019
Nov 12, 2019
Nov 6, 2019
Nov 6, 2019
Nov 6, 2019
Nov 6, 2019
Nov 6, 2019
Nov 6, 2019
Nov 6, 2019
Nov 6, 2019
Nov 6, 2019
Means of redress
OPPO
Nov 6, 2019
Nov 6, 2019
Nov 6, 2019
Nov 6, 2019
Sep 26, 2019
Sep 24, 2019
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Aug 26, 2019
Aug 21, 2019
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Aug 21, 2019
Aug 6, 2019
Aug 6, 2019
Aug 6, 2019
Aug 1, 2019
Aug 1, 2019
Authorisation
OPPO
Aug 1, 2019
Aug 1, 2019
Jul 30, 2019
Jul 25, 2019
Jul 25, 2019
Jul 25, 2019
Jul 25, 2019
Jul 25, 2019
Jul 25, 2019
Claims
OPPO
Jul 25, 2019
Claims
OPPO
Jul 25, 2019
Claims
OPPO
Jul 25, 2019
Claims
OPPO
Jul 25, 2019
Jul 25, 2019
Jul 22, 2019
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Jun 26, 2018
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Jan 23, 2018
Jan 23, 2018
Jan 23, 2018
Jan 23, 2018
Jan 23, 2018
Jan 23, 2018
Jan 23, 2018
Apr 26, 2017
Mar 30, 2017
Decision to grant a European patent
Search/Exam
Mar 16, 2017
(Electronic) Receipt
Search/Exam
Mar 16, 2017
Filing of the translations of the claims
Search/Exam
Mar 16, 2017
French translation of claims
Search/Exam
Mar 16, 2017
German translation of the claims
Search/Exam
Mar 16, 2017
Letter accompanying subsequently filed items
Search/Exam
Nov 17, 2016
Nov 17, 2016
Nov 17, 2016
Intention to grant (signatures)
Search/Exam
Nov 17, 2016
Text intended for grant (clean copy)
Search/Exam
Nov 17, 2016
Oct 10, 2016
(Electronic) Receipt
Search/Exam
Oct 10, 2016
Amended claims with annotations
Search/Exam
Oct 10, 2016
Amended description with annotations
Search/Exam
Oct 10, 2016
Claims
Search/Exam
Oct 10, 2016
Description
Search/Exam
Oct 10, 2016
Letter accompanying subsequently filed items
Search/Exam
Oct 10, 2016
Aug 17, 2016
Aug 10, 2016
(Electronic) Receipt
Search/Exam
Aug 10, 2016
Apr 11, 2016
Annex to the communication
Search/Exam
Apr 11, 2016
Communication from the Examining Division
Search/Exam
Sep 1, 2015
(Electronic) Receipt
Search/Exam
Sep 1, 2015
Amended claims with annotations
Search/Exam
Sep 1, 2015
Claims
Search/Exam
Sep 1, 2015
Letter accompanying subsequently filed items
Search/Exam
Sep 1, 2015
Jul 1, 2015
Jun 19, 2015
(Electronic) Receipt
Search/Exam
Jun 19, 2015
Letter accompanying subsequently filed items
Search/Exam
Jun 19, 2015
Feb 19, 2015
Annex to the communication
Search/Exam
Feb 19, 2015
Communication from the Examining Division
Search/Exam
Dec 16, 2014
Submission concerning representation
Search/Exam
Feb 22, 2013
(Electronic) Receipt
Search/Exam
Feb 22, 2013
Annex
Search/Exam
Feb 22, 2013
Annex
Search/Exam
Feb 22, 2013
Claims
Search/Exam
Feb 22, 2013
Letter accompanying subsequently filed items
Search/Exam
Feb 22, 2013
Jan 7, 2013
Dec 21, 2012
(Electronic) Receipt
Search/Exam
Dec 21, 2012
Letter accompanying subsequently filed items
Search/Exam
Dec 21, 2012
Aug 22, 2012
Annex to a communication
Search/Exam
Aug 22, 2012
Annex to the communication
Search/Exam
Aug 22, 2012
Communication from the Examining Division
Search/Exam
Jul 30, 2012
(Electronic) Receipt
Search/Exam
Jul 30, 2012
Amended claims with annotations
Search/Exam
Jul 30, 2012
Claims
Search/Exam
Jul 30, 2012
Letter accompanying subsequently filed items
Search/Exam
Jul 30, 2012
Jul 30, 2012
May 25, 2012
May 21, 2012
(Electronic) Receipt
Search/Exam
May 21, 2012
Letter accompanying subsequently filed items
Search/Exam
May 21, 2012
Jan 20, 2012
Annex to the communication
Search/Exam
Jan 20, 2012
Communication from the Examining Division
Search/Exam
Apr 13, 2011
Submission concerning representation
Search/Exam
Aug 18, 2009
(Electronic) Receipt
Search/Exam
Aug 18, 2009
Claims
Search/Exam
Aug 18, 2009
Letter accompanying subsequently filed items
Search/Exam
Aug 18, 2009
Jul 21, 2009
Final instructions (loss of partial rights)
Search/Exam
Jun 18, 2009
Jun 12, 2009
(Electronic) Receipt
Search/Exam
Jun 12, 2009
Letter accompanying subsequently filed items
Search/Exam
Jun 12, 2009
Apr 9, 2009
Feb 13, 2009
Communication from the Examining Division
Search/Exam
Jan 9, 2009
Payment of fees and costs
Search/Exam
Sep 8, 2008
Jul 31, 2008
Jul 31, 2008
European search opinion
Search/Exam
Jul 31, 2008
European search report
Search/Exam
Apr 17, 2007
Submission concerning representation
Search/Exam
Nov 22, 2006
Notification of forthcoming publication
Search/Exam
Jul 31, 2006
Jun 29, 2006
Jun 6, 2006
Abstract
Search/Exam
Jun 6, 2006
Claims
Search/Exam
Jun 6, 2006
Description
Search/Exam
Jun 6, 2006
Designation of inventor
Search/Exam
Jun 6, 2006
Request for grant of a European patent
Search/Exam