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The patent EP2500459 was granted to Herbert Kannegiesser on Apr 14, 2021. The application was filed on Feb 27, 2012 under application number EP12001271A. 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 |
|---|---|---|---|
| JENSEN | Jun 20, 2018 | GROSSE SCHUMACHER KNAUER VON HIRSCHHAUSEN | WITHDRAWN |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| OPPOSITION | US2005120758 |
| OPPOSITION | US3734854 |
| OPPOSITION | US6167733 |
| SEARCH | US2005120758 |
| SEARCH | US3734854 |
| SEARCH | US6167733 |
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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Claims
OPPO
Nov 2, 2018
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Claims
OPPO
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Aug 24, 2017
Decision to grant a European patent
Search/Exam
Aug 11, 2017
English translation of the claims
Search/Exam
Aug 11, 2017
Filing of the translations of the claims
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Aug 11, 2017
French translation of claims
Search/Exam
Aug 10, 2017
English translation of the claims
Search/Exam
Aug 10, 2017
Filing of the translations of the claims
Search/Exam
Aug 10, 2017
French translation of claims
Search/Exam
Jun 15, 2017
Payment of fees and costs
Search/Exam
Jun 15, 2017
Payment of fees and costs
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Apr 20, 2017
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Intention to grant (signatures)
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Apr 20, 2017
Text intended for grant (clean copy)
Search/Exam
Apr 20, 2017
Feb 28, 2017
Payment of fees and costs
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Jan 2, 2017
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Submission concerning representation
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Feb 23, 2016
Payment of fees and costs
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Feb 27, 2015
Payment of fees and costs
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Feb 27, 2015
Payment of fees and costs
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Jun 19, 2013
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Decision to allow further processing
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May 25, 2013
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Amended claims with annotations
Search/Exam
May 25, 2013
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Amended description with annotations
Search/Exam
May 25, 2013
Amendments received before examination
Search/Exam
May 25, 2013
Payment of fees and costs
Search/Exam
May 25, 2013
Request for further processing
Search/Exam
Apr 25, 2013
Mar 19, 2013
Letter concerning fees and payments
Search/Exam
Mar 19, 2013
Payment of fees and costs
Search/Exam
Mar 19, 2013
Payment of fees and costs
Search/Exam
Oct 8, 2012
Communication to designated inventor
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Oct 5, 2012
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Letter concerning the inventor
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Sep 24, 2012
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European search opinion
Search/Exam
Aug 22, 2012
European search report
Search/Exam
Aug 22, 2012
Notification of forthcoming publication
Search/Exam
Feb 28, 2012
Abstract
Search/Exam
Feb 28, 2012
Claims
Search/Exam
Feb 28, 2012
Description
Search/Exam
Feb 28, 2012
Designation of inventor
Search/Exam
Feb 28, 2012
Drawings
Search/Exam
Feb 28, 2012
Priority document
Search/Exam
Feb 28, 2012
Request for grant of a European patent
Search/Exam
Feb 27, 2012
Designation of inventor
Search/Exam
Feb 27, 2012
Request for grant of a European patent
Search/Exam
Feb 27, 2012
Feb 27, 2012
Submission concerning representation
Search/Exam