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The patent EP2722456 was granted to Schilling Engineering on Apr 7, 2021. The application was filed on Sep 24, 2013 under application number EP13185776A. The patent is currently recorded with a legal status of "Opposition Rejected".

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 |
|---|---|---|---|
| WEISS KLIMATECHNIK | Dec 23, 2021 | ADVOTEC | - |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| EXAMINATION | FR1252603 |
| EXAMINATION | US3570205 |
| EXAMINATION | US3789567 |
| OPPOSITION | DE20300584U |
| OPPOSITION | DE2706968 |
| OPPOSITION | FR2338359 |
| OPPOSITION | FR2541707 |
| OPPOSITION | FR2719089 |
| OPPOSITION | GB2283071 |
| OPPOSITION | GB2346627 |
| OPPOSITION | JP2004024253 |
| OPPOSITION | JP2008275233 |
| OPPOSITION | JP2009002609 |
| OPPOSITION | JP2010107109 |
| OPPOSITION | JP3855194B |
| OPPOSITION | JPS61175424 |
| OPPOSITION | KR20110011967U |
| OPPOSITION | US5029518 |
| OPPOSITION | US5644878 |
| OPPOSITION | US5681219 |
| OPPOSITION | US7468084 |
| SEARCH | DE2706968 |
| SEARCH | JPS61175424 |
| SEARCH | US5029518 |
| SEARCH | US5681219 |
| SEARCH | US7468084 |
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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Apr 20, 2021
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Decision to grant a European patent
Search/Exam
Feb 25, 2021
(Electronic) Receipt
Search/Exam
Feb 25, 2021
English translation of the claims
Search/Exam
Feb 25, 2021
Filing of the translations of the claims
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Feb 25, 2021
French translation of claims
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Feb 25, 2021
Letter accompanying subsequently filed items
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Feb 15, 2021
(Electronic) Receipt
Search/Exam
Feb 15, 2021
Oct 27, 2020
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Intention to grant (signatures)
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Oct 27, 2020
Text intended for grant (clean copy)
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Oct 27, 2020
Jul 28, 2020
(Electronic) Receipt
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Jul 28, 2020
Letter accompanying subsequently filed items
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Jan 22, 2020
(Electronic) Receipt
Search/Exam
Jan 22, 2020
Amended description with annotations
Search/Exam
Jan 22, 2020
Description
Search/Exam
Jan 22, 2020
Letter accompanying subsequently filed items
Search/Exam
Jan 22, 2020
Nov 14, 2019
Nov 11, 2019
(Electronic) Receipt
Search/Exam
Nov 11, 2019
Letter accompanying subsequently filed items
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Nov 11, 2019
Request for extension of time limit
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Aug 5, 2019
(Electronic) Receipt
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Aug 5, 2019
Letter accompanying subsequently filed items
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Jul 16, 2019
Annex to a communication
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Jul 16, 2019
Annex to the communication
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Jul 16, 2019
Communication from the Examining Division
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Sep 10, 2018
(Electronic) Receipt
Search/Exam
Sep 10, 2018
Letter accompanying subsequently filed items
Search/Exam
Mar 6, 2018
(Electronic) Receipt
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Mar 6, 2018
Amended claims with annotations
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Mar 6, 2018
Claims
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Mar 6, 2018
Letter accompanying subsequently filed items
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Mar 6, 2018
Jan 4, 2018
Dec 21, 2017
(Electronic) Receipt
Search/Exam
Dec 21, 2017
Letter accompanying subsequently filed items
Search/Exam
Dec 21, 2017
Sep 4, 2017
(Electronic) Receipt
Search/Exam
Sep 4, 2017
Letter concerning fees and payments
Search/Exam
Aug 28, 2017
Annex to the communication
Search/Exam
Aug 28, 2017
Communication from the Examining Division
Search/Exam
Aug 21, 2017
Examination started
Search/Exam
Mar 28, 2017
(Electronic) Receipt
Search/Exam
Mar 28, 2017
Mar 28, 2017
Amended claims with annotations
Search/Exam
Mar 28, 2017
Amendments received before examination
Search/Exam
Mar 28, 2017
Letter accompanying subsequently filed items
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Mar 21, 2017
(Electronic) Receipt
Search/Exam
Mar 21, 2017
Letter concerning fees and payments
Search/Exam
Oct 4, 2016
Sep 14, 2016
(Electronic) Receipt
Search/Exam
Sep 14, 2016
Letter accompanying subsequently filed items
Search/Exam
Aug 31, 2016
Aug 31, 2016
European search opinion
Search/Exam
Aug 31, 2016
European search report
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Aug 31, 2016
Information on Search Strategy
Search/Exam
Aug 23, 2016
Search started
Search/Exam
Sep 21, 2015
(Electronic) Receipt
Search/Exam
Sep 21, 2015
Letter accompanying subsequently filed items
Search/Exam
May 6, 2014
Communication to designated inventor
Search/Exam
Apr 25, 2014
(Electronic) Receipt
Search/Exam
Apr 25, 2014
Letter accompanying subsequently filed items
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Apr 25, 2014
Letter concerning the inventor
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Mar 26, 2014
Notification of forthcoming publication
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Jan 21, 2014
Dec 9, 2013
Letter which had not been notified
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Nov 18, 2013
Communication to designated inventor
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Nov 18, 2013
Communication to designated inventor
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Oct 31, 2013
Letter concerning the priority
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Oct 31, 2013
Priority document
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Sep 24, 2013
Abstract
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Sep 24, 2013
Sep 24, 2013
Claims
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Sep 24, 2013
Description
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Sep 24, 2013
Designation of inventor
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Sep 24, 2013
Designation of inventor
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Sep 24, 2013
Drawings
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Sep 24, 2013
Priority search results
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Sep 24, 2013
Priority search results
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Sep 24, 2013
Request for grant of a European patent
Search/Exam