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The patent EP2631222 was granted to Anhui Conch Group on Oct 20, 2021. The application was filed on Oct 20, 2011 under application number EP11833864A. 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 |
|---|---|---|---|
| THYSSENKRUPP INDUSTRIAL SOLUTIONS | Feb 27, 2019 | THYSSENKRUPP | - |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | CN101434461 |
| DESCRIPTION | JP3838951B |
| INTERNATIONAL-SEARCH-REPORT | CN101434461 |
| INTERNATIONAL-SEARCH-REPORT | CN101786809 |
| INTERNATIONAL-SEARCH-REPORT | CN202030667U |
| INTERNATIONAL-SEARCH-REPORT | EP1390316 |
| INTERNATIONAL-SEARCH-REPORT | JP2002255601 |
| INTERNATIONAL-SEARCH-REPORT | JP2006300408 |
| INTERNATIONAL-SEARCH-REPORT | JPH07206487 |
| INTERNATIONAL-SEARCH-REPORT | US4295823 |
| OPPOSITION | CN101786809 |
| SEARCH | DE4303170 |
| SEARCH | JP2007205640 |
| SEARCH | JPH07206487 |
| SEARCH | US4640681 |
| SEARCH | US6595772 |
| SEARCH | WO02090283 |
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 23, 2021
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Sep 17, 2021
Sep 7, 2021
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Description
OPPO
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Refund of fees
Appeal
May 19, 2021
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(Electronic) Receipt
Appeal
May 12, 2021
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Withdrawal of an appeal
Appeal
Apr 9, 2021
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(Electronic) Receipt
Appeal
Apr 1, 2021
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Notice of appeal
Appeal
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Decision to grant a European patent
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Apr 9, 2018
(Electronic) Receipt
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Apr 9, 2018
Filing of the translations of the claims
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Apr 9, 2018
French translation of claims
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Apr 9, 2018
German translation of the claims
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Apr 9, 2018
Letter accompanying subsequently filed items
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Mar 21, 2018
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Intention to grant (signatures)
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Mar 21, 2018
Text intended for grant (clean copy)
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Mar 21, 2018
Mar 1, 2018
Feb 27, 2018
(Electronic) Receipt
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Feb 27, 2018
Claims
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Feb 27, 2018
French translation of claims
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Feb 27, 2018
German translation of the claims
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Feb 27, 2018
Letter accompanying subsequently filed items
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Feb 27, 2018
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Intention to grant (signatures)
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Nov 29, 2017
Text intended for grant (clean copy)
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Nov 29, 2017
May 26, 2017
Amended claims with annotations
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May 26, 2017
Claims
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May 26, 2017
Jan 19, 2017
Annex to the communication
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Jan 19, 2017
Communication from the Examining Division
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Jan 13, 2017
Examination started
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Oct 21, 2016
Payment of fees and costs
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Oct 6, 2016
Priority search results
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Oct 6, 2016
Priority search results
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Oct 6, 2016
Priority search results
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Priority search results
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Priority search results
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Priority search results
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Priority search results
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Oct 6, 2016
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Amended claims with annotations
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Jul 7, 2016
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Amendments received before examination
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Jan 5, 2016
Dec 8, 2015
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European search opinion
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Dec 8, 2015
Information on Search Strategy
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Dec 8, 2015
Supplementary European search report
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Nov 24, 2015
Search started
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Oct 15, 2015
Letter concerning fees and payments
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Oct 15, 2015
Payment of fees and costs
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Jun 19, 2015
Amendments not yet acceptable
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May 7, 2015
Annex
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May 7, 2015
Annex
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May 7, 2015
Annex
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May 7, 2015
Annex
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Oct 23, 2014
Payment of fees and costs
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Oct 31, 2013
Letter concerning fees and payments
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Jul 31, 2013
Notification of forthcoming publication
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May 29, 2013
May 24, 2013
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Communication to designated inventor
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May 24, 2013
Communication to designated inventor
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May 24, 2013
Communication to designated inventor
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May 24, 2013
Communication to designated inventor
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May 24, 2013
Communication to designated inventor
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May 24, 2013
Communication to designated inventor
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May 24, 2013
Communication to designated inventor
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May 24, 2013
Communication to designated inventor
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May 24, 2013
Communication to designated inventor
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May 24, 2013
Communication to designated inventor
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May 24, 2013
Communication to designated inventor
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May 24, 2013
Communication to designated inventor
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May 24, 2013
Communication to designated inventor
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May 24, 2013
Communication to designated inventor
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May 24, 2013
Communication to designated inventor
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May 24, 2013
Communication to designated inventor
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May 24, 2013
Communication to designated inventor
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May 24, 2013
Communication to designated inventor
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May 16, 2013
May 2, 2013
Apr 15, 2013
Abstract
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Apr 15, 2013
Claims
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Apr 15, 2013
Description
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Apr 15, 2013
Designation of inventor
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Apr 15, 2013
Drawings
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Apr 15, 2013
Letter accompanying subsequently filed items
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Apr 15, 2013
Matter concerning the application
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Apr 15, 2013
Apr 15, 2013
Payment of fees and costs
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Apr 15, 2013
Request for entry into the European phase
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Mar 1, 2013
Information on entry into European phase
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Oct 15, 2012
Notification of election of EPO
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Jun 27, 2012
Jun 27, 2012
Apr 26, 2012
Copy of the international search report
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Apr 26, 2012
Apr 26, 2012
International publication pamphlet
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