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The patent EP1940578 was granted to Kemppi on May 24, 2017. The application was filed on Sep 8, 2006 under application number EP06794077A. 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 |
|---|---|---|---|
| FRONIUS | Feb 26, 2018 | ISARPATENT | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | EP0324960 |
| INTERNATIONAL-SEARCH-REPORT | EP1410867 |
| INTERNATIONAL-SEARCH-REPORT | US5726419 |
| OPPOSITION | CA2465439 |
| OPPOSITION | CN1164453 |
| OPPOSITION | EP0936019 |
| OPPOSITION | EP1182001 |
| OPPOSITION | EP1249297 |
| OPPOSITION | EP1283088 |
| OPPOSITION | JP2000079479 |
| OPPOSITION | JP2000158134 |
| OPPOSITION | JP2000288732 |
| OPPOSITION | JP2004042100 |
| OPPOSITION | JPH071130 |
| OPPOSITION | JPH09308968 |
| OPPOSITION | JPH09314328 |
| OPPOSITION | JPH10244366 |
| OPPOSITION | JPH10296441 |
| OPPOSITION | JPS59202175 |
| OPPOSITION | JPS6064774 |
| OPPOSITION | JPS61253175 |
| OPPOSITION | JPS61253176 |
| OPPOSITION | US3423564 |
| OPPOSITION | US5406052 |
| OPPOSITION | US6031203 |
| OPPOSITION | US6794608 |
| OPPOSITION | WO03101658 |
| OPPOSITION | WO2005044502 |
| SEARCH | EP1410867 |
| SEARCH | US5726419 |
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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May 29, 2019
May 29, 2019
May 24, 2019
Apr 8, 2019
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Means of redress
OPPO
Oct 4, 2018
Sep 14, 2018
Sep 14, 2018
Sep 14, 2018
Jul 5, 2018
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Jul 3, 2018
Jul 3, 2018
Jun 26, 2018
Jun 26, 2018
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Authorisation
OPPO
Jun 26, 2018
Jun 26, 2018
Jun 26, 2018
Jun 26, 2018
Mar 7, 2018
Mar 7, 2018
Mar 2, 2018
Feb 26, 2018
Feb 26, 2018
Feb 26, 2018
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Feb 26, 2018
May 24, 2017
Apr 28, 2017
Decision to grant a European patent
Search/Exam
Feb 13, 2017
(Electronic) Receipt
Search/Exam
Feb 13, 2017
Filing of the translations of the claims
Search/Exam
Feb 13, 2017
French translation of claims
Search/Exam
Feb 13, 2017
German translation of the claims
Search/Exam
Feb 13, 2017
Letter accompanying subsequently filed items
Search/Exam
Feb 13, 2017
Letter concerning the inventor
Search/Exam
Nov 8, 2016
Nov 8, 2016
Nov 8, 2016
Intention to grant (signatures)
Search/Exam
Nov 8, 2016
Text intended for grant (clean copy)
Search/Exam
Nov 8, 2016
May 2, 2016
(Electronic) Receipt
Search/Exam
May 2, 2016
Claims
Search/Exam
May 2, 2016
Letter accompanying subsequently filed items
Search/Exam
May 2, 2016
Jan 13, 2016
Annex to the communication
Search/Exam
Jan 13, 2016
Communication from the Examining Division
Search/Exam
Aug 5, 2015
(Electronic) Receipt
Search/Exam
Aug 5, 2015
Claims
Search/Exam
Aug 5, 2015
Description
Search/Exam
Aug 5, 2015
Letter accompanying subsequently filed items
Search/Exam
Aug 5, 2015
Jun 11, 2015
Annex to the communication
Search/Exam
Jun 11, 2015
Communication from the Examining Division
Search/Exam
Jun 16, 2014
Jun 12, 2014
Jun 10, 2014
Jun 8, 2011
(Electronic) Receipt
Search/Exam
Jun 8, 2011
Amendments received before examination
Search/Exam
Jun 8, 2011
Letter accompanying subsequently filed items
Search/Exam
Dec 14, 2010
Nov 25, 2010
Nov 25, 2010
European search opinion
Search/Exam
Nov 25, 2010
Supplementary European search report
Search/Exam
Jun 11, 2008
Apr 16, 2008
Mar 19, 2008
(Electronic) Receipt
Search/Exam
Mar 19, 2008
Request for entry into the European phase
Search/Exam
Mar 18, 2008
Mar 18, 2008
Jan 18, 2008
Information on entry into European phase
Search/Exam
Jul 11, 2007
Notification of election of EPO
Search/Exam
Apr 4, 2007
Mar 15, 2007
Copy of the international search report
Search/Exam
Mar 15, 2007
Published international application - A1
Search/Exam