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The patent EP3129149 was granted to Maschinenfabrik Kppern on Jul 1, 2020. The application was filed on Dec 19, 2014 under application number EP14815758A. 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 |
|---|---|---|---|
| THERMOPROZESS INDUKTIONSWARME | Mar 31, 2021 | LENZING GERBER STUTE | - |
| TAKRAF | Mar 30, 2021 | KAILUWEIT & UHLEMANN PATENTANWALTE PARTNERSCHAFT MBB | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| INTERNATIONAL-SEARCH-REPORT | DE19532848 |
| INTERNATIONAL-SEARCH-REPORT | DE19833456 |
| INTERNATIONAL-SEARCH-REPORT | FR1091403 |
| INTERNATIONAL-SEARCH-REPORT | JPH05277519 |
| INTERNATIONAL-SEARCH-REPORT | US3503241 |
| INTERNATIONAL-SEARCH-REPORT | US3724059 |
| INTERNATIONAL-SEARCH-REPORT | US4408382 |
| INTERNATIONAL-SEARCH-REPORT | WO2014012770 |
| OPPOSITION | CN201900025U |
| OPPOSITION | DE202010005879U |
| OPPOSITION | FR1091403 |
| OPPOSITION | JPH05277519 |
| OPPOSITION | US2004084443 |
| OPPOSITION | US3503241 |
| OPPOSITION | US3724059 |
| OPPOSITION | US4408382 |
| OPPOSITION | WO2014101991 |
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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Reply to appeal
Appeal
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(Electronic) Receipt
Appeal
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Claims
Appeal
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Claims
Appeal
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Appeal
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Appeal
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Appeal
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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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OPPO
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Jul 13, 2020
Jun 5, 2020
Decision to grant a European patent
Search/Exam
May 25, 2020
(Electronic) Receipt
Search/Exam
May 25, 2020
English translation of the claims
Search/Exam
May 25, 2020
Filing of the translations of the claims
Search/Exam
May 25, 2020
French translation of claims
Search/Exam
May 25, 2020
Letter accompanying subsequently filed items
Search/Exam
Apr 28, 2020
(Electronic) Receipt
Search/Exam
Apr 28, 2020
Letter accompanying subsequently filed items
Search/Exam
Mar 4, 2020
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Intention to grant (signatures)
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Mar 4, 2020
Text intended for grant (clean copy)
Search/Exam
Mar 4, 2020
Feb 17, 2020
Examination started
Search/Exam
Nov 22, 2019
(Electronic) Receipt
Search/Exam
Nov 22, 2019
Letter accompanying subsequently filed items
Search/Exam
Mar 29, 2019
Submission concerning representation
Search/Exam
Nov 21, 2018
(Electronic) Receipt
Search/Exam
Nov 21, 2018
Letter accompanying subsequently filed items
Search/Exam
Sep 21, 2017
(Electronic) Receipt
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Sep 21, 2017
Letter accompanying subsequently filed items
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Jul 24, 2017
(Electronic) Receipt
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Jul 24, 2017
Letter accompanying subsequently filed items
Search/Exam
Jul 24, 2017
Jul 5, 2017
Mar 29, 2017
(Electronic) Receipt
Search/Exam
Mar 29, 2017
Mar 29, 2017
Amended claims with annotations
Search/Exam
Mar 29, 2017
Amendments received before examination
Search/Exam
Mar 29, 2017
Letter accompanying subsequently filed items
Search/Exam
Feb 1, 2017
Communication to designated inventor
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Jan 26, 2017
(Electronic) Receipt
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Jan 26, 2017
Letter accompanying subsequently filed items
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Jan 26, 2017
Letter concerning the inventor
Search/Exam
Jan 18, 2017
Dec 28, 2016
(Electronic) Receipt
Search/Exam
Dec 28, 2016
Letter accompanying subsequently filed items
Search/Exam
Dec 16, 2016
Dec 12, 2016
Letter which had not been notified
Search/Exam
Nov 18, 2016
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Communication to designated inventor
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Nov 16, 2016
Communication to designated inventor
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Nov 16, 2016
Communication to designated inventor
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Sep 12, 2016
(Electronic) Receipt
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Sep 12, 2016
Request for entry into the European phase
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Aug 19, 2016
Information on entry into European phase
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Nov 3, 2015
Oct 15, 2015
Copy of the international search report
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Oct 15, 2015
Copy of the international search report
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Oct 15, 2015
Published international application - A1
Search/Exam
Mar 20, 2015
Mar 20, 2015
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Jan 17, 2015
Dec 19, 2014
(Electronic) Receipt
PCTRO
Dec 19, 2014
Abstract
PCTRO
Dec 19, 2014
Claims
PCTRO
Dec 19, 2014
Description
PCTRO
Dec 19, 2014
Drawings
PCTRO