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The patent EP2072957 was granted to Kundo System Technik on Dec 11, 2019. The application was filed on Nov 19, 2008 under application number EP08020144A. 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 |
|---|---|---|---|
| ISTA | Sep 11, 2020 | COHAUSZ HANNIG BORKOWSKI WISSGOTT | - |
| TECHEM ENERGY SERVICES | Sep 11, 2020 | KEIL & SCHAAFHAUSEN PATENTANWALTE PARTGMBB | - |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | US2007057814 |
| DESCRIPTION | WO2007030826 |
| OPPOSITION | EP0911975 |
| OPPOSITION | EP1282094 |
| OPPOSITION | EP1705620 |
| OPPOSITION | US2007057812 |
| OPPOSITION | US2007057814 |
| OPPOSITION | WO2007030826 |
| SEARCH | US2007057814 |
| SEARCH | WO2007030826 |
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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Dec 20, 2019
Nov 14, 2019
Decision to grant a European patent
Search/Exam
Oct 17, 2019
(Electronic) Receipt
Search/Exam
Oct 17, 2019
English translation of the claims
Search/Exam
Oct 17, 2019
Filing of the translations of the claims
Search/Exam
Oct 17, 2019
French translation of claims
Search/Exam
Oct 17, 2019
Letter accompanying subsequently filed items
Search/Exam
Jun 21, 2019
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Jun 21, 2019
Intention to grant (signatures)
Search/Exam
Jun 21, 2019
Text intended for grant (clean copy)
Search/Exam
Jun 21, 2019
Sep 19, 2018
Sep 6, 2018
(Electronic) Receipt
Search/Exam
Sep 6, 2018
Enquiry as to the processing of the file
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Sep 6, 2018
Letter accompanying subsequently filed items
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Feb 8, 2016
(Electronic) Receipt
Search/Exam
Feb 8, 2016
Amended claims with annotations
Search/Exam
Feb 8, 2016
Amended description with annotations
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Feb 8, 2016
Claims
Search/Exam
Feb 8, 2016
Description
Search/Exam
Feb 8, 2016
Letter accompanying subsequently filed items
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Feb 8, 2016
Oct 9, 2015
Annex to the communication
Search/Exam
Oct 9, 2015
Communication from the Examining Division
Search/Exam
Oct 1, 2015
Examination started
Search/Exam
Jan 14, 2015
Oct 28, 2014
Letter concerning fees and payments
Search/Exam
Sep 12, 2013
Sep 6, 2013
Jul 23, 2013
(Electronic) Receipt
Search/Exam
Jul 23, 2013
Jul 23, 2013
Amended claims with annotations
Search/Exam
Jul 23, 2013
Jul 23, 2013
Amended description with annotations
Search/Exam
Jul 23, 2013
Amendments received before examination
Search/Exam
Jul 23, 2013
Letter accompanying subsequently filed items
Search/Exam
Jun 20, 2013
Submission concerning representation
Search/Exam
Feb 11, 2013
Jan 9, 2013
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European search opinion
Search/Exam
Jan 9, 2013
European search report
Search/Exam
Sep 28, 2011
Letter concerning fees and payments
Search/Exam
Sep 2, 2011
Jul 29, 2011
Annexes in respect of a client data request
Search/Exam
Jul 29, 2011
Jul 14, 2011
Jun 9, 2011
Annexes in respect of a client data request
Search/Exam
Jun 9, 2011
Payment of fees and costs
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Jun 9, 2011
Dec 15, 2010
Refund of fees
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Nov 29, 2010
Letter concerning fees and payments
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Nov 29, 2010
Letter concerning fees and payments
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Aug 25, 2009
Aug 25, 2009
Aug 17, 2009
Jul 30, 2009
May 27, 2009
Notification of forthcoming publication
Search/Exam
Feb 20, 2009
Letter concerning the inventor
Search/Exam
Feb 6, 2009
Feb 2, 2009
Letter which had not been notified
Search/Exam
Dec 3, 2008
Letter concerning the priority
Search/Exam
Dec 3, 2008
Priority document
Search/Exam
Nov 19, 2008
Abstract
Search/Exam
Nov 19, 2008
Claims
Search/Exam
Nov 19, 2008
Description
Search/Exam
Nov 19, 2008
Designation of inventor
Search/Exam
Nov 19, 2008
Request for grant of a European patent
Search/Exam