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The patent EP2772304 was granted to Josef Meissner on Aug 7, 2024. The application was filed on May 18, 2012 under application number EP13005208A. 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 |
|---|---|---|---|
| NORAM | Feb 12, 2018 | M ZARDI | ADMISSIBLE |
| COVESTRO DEUTSCHLAND | Feb 8, 2018 | LEVPAT | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | CA1034603 |
| DESCRIPTION | DE1135425 |
| DESCRIPTION | DE2151206 |
| DESCRIPTION | EP0279312 |
| DESCRIPTION | EP0736514 |
| DESCRIPTION | EP1593654 |
| DESCRIPTION | EP1780195 |
| DESCRIPTION | EP1816117 |
| DESCRIPTION | US3221064 |
| DESCRIPTION | US4091042 |
| DESCRIPTION | US4482769 |
| DESCRIPTION | US4597875 |
| DESCRIPTION | US4994242 |
| DESCRIPTION | US6288289 |
| OPPOSITION | BE528983Q |
| OPPOSITION | CN1597557 |
| OPPOSITION | CN1757630 |
| OPPOSITION | CN2729072Y |
| OPPOSITION | DE1057081 |
| OPPOSITION | DE2202635 |
| OPPOSITION | DE4227372 |
| OPPOSITION | DE4238390 |
| OPPOSITION | DE732742 |
| OPPOSITION | EP0279312 |
| OPPOSITION | EP0520276 |
| OPPOSITION | EP0708076 |
| OPPOSITION | EP0771783 |
| OPPOSITION | EP1780195 |
| OPPOSITION | EP1816117 |
| OPPOSITION | GB1380303 |
| OPPOSITION | GB1407281 |
| OPPOSITION | GB1506492 |
| OPPOSITION | RU2404171 |
| OPPOSITION | US2014303401 |
| OPPOSITION | US3111538 |
| OPPOSITION | US3221064 |
| OPPOSITION | US3409620 |
| OPPOSITION | US4314974 |
| OPPOSITION | US4453027 |
| OPPOSITION | US5514820 |
| OPPOSITION | US6350354 |
| OPPOSITION | WO0164333 |
| OPPOSITION | WO2011023638 |
| SEARCH | DE1222904 |
| SEARCH | DE2151206 |
| SEARCH | EP0279312 |
| SEARCH | US3221064 |
| SEARCH | US4482769 |
| SEARCH | US4597875 |
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.
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Description
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Jul 11, 2024
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May 11, 2017
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Decision to grant a European patent
Search/Exam
Mar 24, 2017
English translation of the claims
Search/Exam
Mar 24, 2017
Filing of the translations of the claims
Search/Exam
Mar 24, 2017
French translation of claims
Search/Exam
Mar 23, 2017
English translation of the claims
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Mar 23, 2017
Filing of the translations of the claims
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Mar 23, 2017
French translation of claims
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Mar 23, 2017
Payment of fees and costs
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Intention to grant (signatures)
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Feb 24, 2017
Text intended for grant (clean copy)
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Feb 24, 2017
Aug 25, 2016
Amended description with annotations
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Aug 25, 2016
Description
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Aug 25, 2016
Aug 24, 2016
Amended description with annotations
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Aug 24, 2016
Description
Search/Exam
Aug 24, 2016
May 23, 2016
Annex to the communication
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May 23, 2016
Communication from the Examining Division
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Mar 21, 2016
Payment of fees and costs
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May 26, 2015
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Amended claims with annotations
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Apr 29, 2015
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Nov 10, 2014
Oct 24, 2014
Notice on debiting of fees
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Oct 15, 2014
Letter concerning fees and payments
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Oct 15, 2014
Payment of fees and costs
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Oct 15, 2014
Payment of fees and costs
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Oct 15, 2014
Refund of fees
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Oct 6, 2014
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European search opinion
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Oct 6, 2014
European search report
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Sep 25, 2014
Search started
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Aug 18, 2014
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Aug 6, 2014
Notification of forthcoming publication
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Jan 29, 2014
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Abstract
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Description
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Description
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Communication to designated inventor
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Communication to designated inventor
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Communication to designated inventor
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Communication to designated inventor
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Dec 20, 2013
Abstract
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Dec 20, 2013
Abstract
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Dec 20, 2013
Claims
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Dec 20, 2013
Claims
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Dec 20, 2013
Description
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Dec 20, 2013
Description
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Dec 20, 2013
Designation of inventor
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Designation of inventor
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Dec 20, 2013
Drawings
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Dec 20, 2013
Drawings
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Dec 20, 2013
Letter concerning fees and payments
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Dec 20, 2013
Payment of fees and costs
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Dec 20, 2013
Request for grant of a European patent
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Dec 20, 2013
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Submission concerning representation
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Dec 5, 2013
Matter concerning the application
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Dec 3, 2013
Matter concerning the application
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Nov 29, 2013
Dec 12, 2012