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The patent EP2976391 was granted to Imertech on Nov 14, 2018. The application was filed on Mar 17, 2014 under application number EP14710308A. 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 |
|---|---|---|---|
| OMYA | Aug 14, 2019 | MAIWALD | ADMISSIBLE |
| SCHAEFER KALK | Aug 14, 2019 | MAI BESIER | DEEMED NOT TO HAVE BEEN FILED |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | EP0634463 |
| DESCRIPTION | EP2292701 |
| DESCRIPTION | US4824654 |
| INTERNATIONAL-SEARCH-REPORT | KR20040087050 |
| INTERNATIONAL-SEARCH-REPORT | US2003213937 |
| INTERNATIONAL-SEARCH-REPORT | US2004166047 |
| INTERNATIONAL-SEARCH-REPORT | WO2013050495 |
| OPPOSITION | DE10017273 |
| OPPOSITION | EP2764057 |
| OPPOSITION | JP2012224535 |
| OPPOSITION | US2003213937 |
| OPPOSITION | US2004166047 |
| OPPOSITION | US2006099132 |
| OPPOSITION | US2010068506 |
| OPPOSITION | US3511600 |
| OPPOSITION | US4877598 |
| OPPOSITION | US5007964 |
| OPPOSITION | US7718085 |
| OPPOSITION | US7897062 |
| OPPOSITION | WO2008128545 |
| OPPOSITION | WO2013050495 |
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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Appeal
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(Electronic) Receipt
Appeal
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Reply to appeal
Appeal
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Appeal
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Reply to appeal
Appeal
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Appeal
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Notice of appeal
Appeal
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(Electronic) Receipt
Appeal
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Notice of appeal
Appeal
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Submission concerning representation
Search/Exam
Mar 11, 2019
Mar 4, 2019
Annexes in respect of a client data request
Search/Exam
Jan 16, 2019
Dec 21, 2018
Dec 20, 2018
Nov 26, 2018
Oct 18, 2018
Decision to grant a European patent
Search/Exam
Oct 3, 2018
(Electronic) Receipt
Search/Exam
Oct 3, 2018
French translation of claims
Search/Exam
Oct 3, 2018
German translation of the claims
Search/Exam
Oct 3, 2018
Letter accompanying subsequently filed items
Search/Exam
Jun 22, 2018
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Intention to grant (signatures)
Search/Exam
Jun 22, 2018
Text intended for grant (clean copy)
Search/Exam
Jun 22, 2018
Dec 11, 2017
(Electronic) Receipt
Search/Exam
Dec 11, 2017
Amended claims with annotations
Search/Exam
Dec 11, 2017
Claims
Search/Exam
Dec 11, 2017
Dec 11, 2017
Letter accompanying subsequently filed items
Search/Exam
Dec 11, 2017
Dec 6, 2017
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(Electronic) Receipt
Search/Exam
Oct 9, 2017
May 30, 2017
Annex to the communication
Search/Exam
May 30, 2017
Communication from the Examining Division
Search/Exam
May 22, 2017
Examination started
Search/Exam
Jul 29, 2016
Jul 27, 2016
Annexes in respect of a client data request
Search/Exam
Jul 26, 2016
Annexes in respect of a client data request
Search/Exam
Jul 25, 2016
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Annexes in respect of a client data request
Search/Exam
Jul 18, 2016
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(Electronic) Receipt
Search/Exam
Jul 13, 2016
Letter accompanying subsequently filed items
Search/Exam
Jul 12, 2016
Jun 24, 2016
(Electronic) Receipt
Search/Exam
Jun 24, 2016
Authorisation
Search/Exam
Jun 24, 2016
Letter accompanying subsequently filed items
Search/Exam
Jun 24, 2016
Jun 6, 2016
Invitation to file an authorisation
Search/Exam
May 23, 2016
(Electronic) Receipt
Search/Exam
May 23, 2016
May 23, 2016
Amended claims with annotations
Search/Exam
May 23, 2016
Amendments received before examination
Search/Exam
May 23, 2016
Letter accompanying subsequently filed items
Search/Exam
Apr 28, 2016
(Electronic) Receipt
Search/Exam
Apr 28, 2016
Letter accompanying subsequently filed items
Search/Exam
Apr 28, 2016
Jan 7, 2016
Nov 13, 2015
Nov 7, 2015
Priority search results copy provided by EPO
Search/Exam
Oct 27, 2015
Communication to designated inventor
Search/Exam
Oct 27, 2015
Communication to designated inventor
Search/Exam
Oct 27, 2015
Communication to designated inventor
Search/Exam
Oct 5, 2015
Sep 17, 2015
(Electronic) Receipt
Search/Exam
Sep 17, 2015
Sep 17, 2015
Amended claims with annotations
Search/Exam
Sep 17, 2015
Request for entry into the European phase
Search/Exam
Jul 29, 2015
Information on entry into European phase
Search/Exam
Dec 18, 2014
Copy of the international search report
Search/Exam
Dec 18, 2014
Oct 20, 2014
Oct 20, 2014
Oct 20, 2014
Oct 14, 2014
Sep 25, 2014
Published international application - A2
Search/Exam
Mar 17, 2014
(Electronic) Receipt
PCTRO
Mar 17, 2014
Abstract
PCTRO
Mar 17, 2014
Claims
PCTRO
Mar 17, 2014
Description
PCTRO
Mar 17, 2014