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The patent EP1800521 was granted to Easytherm on May 17, 2017. The application was filed on Oct 4, 2005 under application number EP05794357A. 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 |
|---|---|---|---|
| REDWELL MANUFAKTUR | Feb 12, 2018 | KLIMENT & HENHAPEL | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| EXAMINATION | GB574107 |
| EXAMINATION | US2456202 |
| INTERNATIONAL-SEARCH-REPORT | DE3108025 |
| INTERNATIONAL-SEARCH-REPORT | EP1298961 |
| INTERNATIONAL-SEARCH-REPORT | GB1392115 |
| INTERNATIONAL-SEARCH-REPORT | WO9531084 |
| OPPOSITION | GB1392115 |
| OPPOSITION | GB2081245 |
| OPPOSITION | GB574107 |
| OPPOSITION | US2456202 |
| OTHER | GB574107 |
| OTHER | US2456202 |
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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Mar 26, 2020
Mar 26, 2020
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Dec 17, 2019
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Means of redress
OPPO
Dec 10, 2019
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Claims
OPPO
Jun 17, 2019
Claims
OPPO
Jun 17, 2019
Claims
OPPO
Jun 17, 2019
Claims
OPPO
Jun 17, 2019
Claims
OPPO
Jun 17, 2019
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May 17, 2017
Apr 21, 2017
Decision to grant a European patent
Search/Exam
Mar 31, 2017
Authorisation
Search/Exam
Mar 31, 2017
English translation of the claims
Search/Exam
Mar 31, 2017
Filing of the translations of the claims
Search/Exam
Mar 31, 2017
French translation of claims
Search/Exam
Mar 20, 2017
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Mar 13, 2017
Annexes in respect of a client data request
Search/Exam
Mar 13, 2017
Authorisation
Search/Exam
Mar 13, 2017
Mar 6, 2017
Annexes in respect of a client data request
Search/Exam
Mar 6, 2017
Authorisation
Search/Exam
Mar 6, 2017
Jan 16, 2017
Jan 16, 2017
Invitation to file an authorisation
Search/Exam
Dec 12, 2016
Dec 12, 2016
Dec 12, 2016
Intention to grant (signatures)
Search/Exam
Dec 12, 2016
Text intended for grant (clean copy)
Search/Exam
Dec 12, 2016
Aug 29, 2016
Aug 22, 2016
Extension of time limit granted
Search/Exam
Jun 24, 2016
May 9, 2016
May 9, 2016
Invitation to file an authorisation
Search/Exam
Apr 20, 2016
Mar 18, 2016
Annexes in respect of a client data request
Search/Exam
Mar 18, 2016
Jun 5, 2014
Amended claims with annotations
Search/Exam
Jun 5, 2014
Claims
Search/Exam
Jun 5, 2014
Jun 5, 2014
Apr 10, 2014
Apr 7, 2014
Dec 5, 2013
Annex to the communication
Search/Exam
Dec 5, 2013
Communication from the Examining Division
Search/Exam
Aug 13, 2013
Aug 13, 2013
Aug 6, 2013
Patent document filed by a Third party
Search/Exam
Aug 6, 2013
Patent document filed by a Third party
Search/Exam
Aug 6, 2013
Reply to communication to third party
Search/Exam
Apr 25, 2013
Apr 18, 2013
Feb 18, 2013
Feb 12, 2013
Oct 16, 2012
Annex to the communication
Search/Exam
Oct 16, 2012
Communication from the Examining Division
Search/Exam
Sep 7, 2009
Claims
Search/Exam
Sep 7, 2009
Description
Search/Exam
Sep 7, 2009
Sep 1, 2009
Claims
Search/Exam
Sep 1, 2009
Description
Search/Exam
Sep 1, 2009
Jun 19, 2009
Annex to the communication
Search/Exam
Jun 19, 2009
Communication from the Examining Division
Search/Exam
Dec 5, 2007
May 31, 2007
May 29, 2007
May 24, 2007
Apr 16, 2007
Apr 16, 2007
Apr 16, 2007
Description
Search/Exam
Apr 16, 2007
Request for entry into the European phase
Search/Exam
Apr 12, 2007
Feb 16, 2007
Information on entry into European phase
Search/Exam
Sep 11, 2006
Sep 11, 2006
Sep 11, 2006
Sep 11, 2006
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Aug 4, 2006
May 24, 2006
May 24, 2006
May 5, 2006
PCT demand form
PCT2
May 3, 2006
Apr 13, 2006
Copy of the international search report
Search/Exam
Apr 13, 2006
Copy of the international search report
Search/Exam
Apr 13, 2006
Copy of the international search report
Search/Exam
Apr 13, 2006
Published international application - A1
Search/Exam
Apr 13, 2006
Published international application - A1
Search/Exam
Nov 16, 2005
Abstract
PCTISA
Nov 16, 2005
Claims
PCTISA
Nov 16, 2005
Description
PCTISA
Nov 16, 2005
Drawings
PCTISA