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The patent EP2674408 was granted to Tosoh on Jun 7, 2017. The application was filed on Apr 8, 2009 under application number EP13184318A. 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 |
|---|---|---|---|
| HOFFMANN EITLE | Mar 7, 2018 | HOFFMANN EITLE | ADMISSIBLE |
| TREIBACHER INDUSTRIE | Mar 7, 2018 | NEMEC | ADMISSIBLE |
| M DEUTSCHLAND DE M INNOVATIVE PROPERTIES | Mar 6, 2018 | BREM | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | JP2008050247 |
| DESCRIPTION | JPS6291467 |
| EXAMINATION | WO2008013099 |
| OPPOSITION | EP0297908 |
| OPPOSITION | EP0908425 |
| OPPOSITION | EP2045222 |
| OPPOSITION | JP2005211101 |
| OPPOSITION | JP2008024555 |
| OPPOSITION | JP2008050247 |
| OPPOSITION | JP2008081325 |
| OPPOSITION | JPH08117248 |
| OPPOSITION | US2002006532 |
| OPPOSITION | US2002031675 |
| OPPOSITION | US6087285 |
| OPPOSITION | WO2008013099 |
| OTHER | JP2005211101 |
| OTHER | WO0180917 |
| SEARCH | JP2008024555 |
| SEARCH | US6087285 |
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 2, 2021
Advice of delivery
Appeal
Sep 1, 2021
Advice of delivery
Appeal
Sep 1, 2021
Refund of fees
Search/Exam
Sep 1, 2021
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Appeal
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Appeal
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Withdrawal of an appeal
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Jun 7, 2017
May 11, 2017
Decision to grant a European patent
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Apr 10, 2017
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Apr 10, 2017
French translation of claims
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Apr 10, 2017
Letter accompanying subsequently filed items
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Nov 29, 2016
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Nov 29, 2016
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(Electronic) Receipt
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Oct 26, 2016
Claims
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Oct 26, 2016
Letter accompanying subsequently filed items
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Oct 10, 2016
Letter accompanying subsequently filed items
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Oct 10, 2016
Sep 30, 2016
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Annex to the communication
Search/Exam
Aug 9, 2016
(Electronic) Receipt
Search/Exam
Aug 9, 2016
Amended claims with annotations
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Aug 9, 2016
Claims
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Aug 9, 2016
Description
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Aug 9, 2016
Letter accompanying subsequently filed items
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Aug 9, 2016
May 31, 2016
Advice of delivery
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Apr 8, 2016
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Advice of delivery
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Apr 8, 2016
Letter accompanying subsequently filed items
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Apr 1, 2016
Acknowledgement of a document
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Apr 1, 2016
Annex to the communication
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Apr 1, 2016
Preparation for oral proceedings
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Apr 1, 2016
Summons to attend oral proceedings
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Mar 16, 2016
(Electronic) Receipt
Search/Exam
Mar 16, 2016
Description
Search/Exam
Mar 16, 2016
Letter accompanying subsequently filed items
Search/Exam
Mar 16, 2016
Matter concerning the application
Search/Exam
Jan 13, 2016
(Electronic) Receipt
Search/Exam
Jan 13, 2016
Amended claims with annotations
Search/Exam
Jan 13, 2016
Amended description with annotations
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Jan 13, 2016
Annex
Search/Exam
Jan 13, 2016
Claims
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Jan 13, 2016
Letter accompanying subsequently filed items
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Jan 13, 2016
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Oct 23, 2015
Annex to the communication
Search/Exam
Oct 23, 2015
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Jul 30, 2015
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Jul 30, 2015
Amended claims with annotations
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Jul 30, 2015
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Jul 30, 2015
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Search/Exam
Jul 30, 2015
Claims
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Jul 30, 2015
Description
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Jul 30, 2015
Letter accompanying subsequently filed items
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Jul 30, 2015
Mar 26, 2015
Annex to the communication
Search/Exam
Mar 26, 2015
Communication from the Examining Division
Search/Exam
Jan 13, 2015
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Jan 7, 2015
(Electronic) Receipt
Search/Exam
Jan 7, 2015
Letter accompanying subsequently filed items
Search/Exam
Jan 7, 2015
Observations by third parties
Search/Exam
Jan 7, 2015
Patent document filed by a Third party
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Jan 7, 2015
Patent document filed by a Third party
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Jan 7, 2015
Patent document filed by a Third party
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Jun 13, 2014
(Electronic) Receipt
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Jun 13, 2014
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Amended claims with annotations
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Jun 13, 2014
Amendments received before examination
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Jun 13, 2014
Letter accompanying subsequently filed items
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Jan 2, 2014
Nov 20, 2013
Notification of forthcoming publication
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Nov 18, 2013
Refund of fees
Search/Exam
Nov 7, 2013
Nov 7, 2013
European search opinion
Search/Exam
Nov 7, 2013
European search report
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Nov 6, 2013
Communication to designated inventor
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Nov 6, 2013
Communication to designated inventor
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Nov 6, 2013
Communication to designated inventor
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Nov 6, 2013
Oct 31, 2013
Modified abstract
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Oct 30, 2013
Search started
Search/Exam
Sep 13, 2013
Abstract
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Sep 13, 2013
Sep 13, 2013
Claims
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Sep 13, 2013
Description
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Sep 13, 2013
Designation of inventor
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Sep 13, 2013
Designation of inventor
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Sep 13, 2013
Designation of inventor
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Sep 13, 2013
Drawings
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Sep 13, 2013
Request for grant of a European patent
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