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The patent EP1886016 was granted to Vestas Wind Systems on May 10, 2017. The application was filed on May 17, 2005 under application number EP05739534A. 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 |
|---|---|---|---|
| LM WIND POWER | Feb 12, 2018 | COPA COPENHAGEN PATENTS | ADMISSIBLE |
| NORDEX ENERGY | Feb 9, 2018 | HAUCK | WITHDRAWN |
| NORDEX ENERGY | Feb 9, 2018 | HAUCK PATENTANWALTSPARTNERSCHAFT MBB | WITHDRAWN |
| SIEMENS GAMESA RENEWABLE ENERGY | Feb 8, 2018 | SGRE ASSOCIATION | ADMISSIBLE |
| SUZLON ENERGY | Feb 7, 2018 | MAIKOWSKI & NINNEMANN PATENTANWALTE PARTNERSCHAFT MBB | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| EXAMINATION | GB2186033 |
| INTERNATIONAL-SEARCH-REPORT | US4584486 |
| INTERNATIONAL-SEARCH-REPORT | WO0015961 |
| INTERNATIONAL-SEARCH-REPORT | WO0116482 |
| INTERNATIONAL-SEARCH-REPORT | WO2004099608 |
| OPPOSITION | GB2186033 |
| OPPOSITION | JP2003254225 |
| OPPOSITION | US4522564 |
| OPPOSITION | US4584486 |
| OPPOSITION | US6619918 |
| OPPOSITION | WO0015961 |
| OPPOSITION | WO0116482 |
| OPPOSITION | WO0208600 |
| OPPOSITION | WO2004099608 |
| OPPOSITION | WO2005028305 |
| OPPOSITION | WO2006122547 |
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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Appeal
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(Electronic) Receipt
Appeal
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Jul 27, 2022
Letter accompanying subsequently filed items
Search/Exam
Jul 27, 2022
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Jul 7, 2022
(Electronic) Receipt
Appeal
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(Electronic) Receipt
Appeal
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Jun 30, 2022
(Electronic) Receipt
Appeal
Jun 30, 2022
Authorisation
Appeal
Jun 30, 2022
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Document concerning representation
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Dec 23, 2021
(Electronic) Receipt
Appeal
Dec 23, 2021
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Advice of delivery
Appeal
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Nov 26, 2020
Aug 3, 2020
Aug 3, 2020
Aug 3, 2020
Jul 28, 2020
(Electronic) Receipt
Appeal
Jul 28, 2020
Jul 28, 2020
Reply to appeal
Appeal
Jul 22, 2020
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Jul 17, 2020
(Electronic) Receipt
Appeal
Jul 17, 2020
Jul 17, 2020
Reply to appeal
Appeal
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(Electronic) Receipt
Appeal
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(Electronic) Receipt
Appeal
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(Electronic) Receipt
Appeal
Feb 28, 2020
(Electronic) Receipt
Appeal
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Claims
Appeal
Feb 28, 2020
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Request for correction
Appeal
Feb 28, 2020
Jan 14, 2020
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Dec 30, 2019
(Electronic) Receipt
Appeal
Dec 30, 2019
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Notice of appeal
Appeal
Dec 23, 2019
(Electronic) Receipt
Appeal
Dec 23, 2019
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Notice of appeal
Appeal
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OPPO
Jul 5, 2018
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OPPO
Jul 5, 2018
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OPPO
Jul 5, 2018
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OPPO
Jul 5, 2018
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OPPO
Jul 5, 2018
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May 10, 2017
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Decision to grant a European patent
Search/Exam
Apr 4, 2017
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Apr 4, 2017
Text intended for grant
Search/Exam
Mar 30, 2017
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(Electronic) Receipt
Search/Exam
Mar 22, 2017
Amended claims with annotations
Search/Exam
Mar 22, 2017
Claims
Search/Exam
Mar 22, 2017
French translation of claims
Search/Exam
Mar 22, 2017
German translation of the claims
Search/Exam
Mar 22, 2017
Letter accompanying subsequently filed items
Search/Exam
Mar 22, 2017
Nov 17, 2016
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Intention to grant (signatures)
Search/Exam
Nov 17, 2016
Text intended for grant
Search/Exam
Sep 30, 2016
(Electronic) Receipt
Search/Exam
Sep 30, 2016
Amended claims with annotations
Search/Exam
Sep 30, 2016
Amended description with annotations
Search/Exam
Sep 30, 2016
Claims
Search/Exam
Sep 30, 2016
Description
Search/Exam
Sep 30, 2016
Letter accompanying subsequently filed items
Search/Exam
Sep 30, 2016
Jun 15, 2016
Annex to the communication
Search/Exam
Jun 15, 2016
Communication from the Examining Division
Search/Exam
Apr 30, 2015
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(Electronic) Receipt
Search/Exam
Feb 26, 2014
Letter accompanying subsequently filed items
Search/Exam
Feb 26, 2014
Apr 2, 2012
Mar 26, 2012
Nov 5, 2009
Claims
Search/Exam
Nov 5, 2009
Description
Search/Exam
Nov 5, 2009
Letter accompanying subsequently filed items
Search/Exam
Nov 5, 2009
Jul 10, 2009
Annex to the communication
Search/Exam
Jul 10, 2009
Communication from the Examining Division
Search/Exam
Jan 16, 2008
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Nov 29, 2007
Letter accompanying subsequently filed items
Search/Exam
Nov 29, 2007
Request for entry into the European phase
Search/Exam
Nov 28, 2007
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Information on entry into European phase
Search/Exam
Aug 6, 2007
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May 24, 2007
Notification of election of EPO
Search/Exam
Mar 16, 2007
Mar 16, 2007
Mar 5, 2007
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Mar 2, 2007
Annex
PCT2
Mar 2, 2007
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PCT demand form
PCT2
Mar 2, 2007
Feb 19, 2007
Notification of the recording of a change
Search/Exam
Nov 23, 2006
Copy of the international search report
Search/Exam
Nov 23, 2006
Published international application - A1
Search/Exam
Aug 12, 2005
May 30, 2005
Abstract
PCTISA
May 30, 2005
Claims
PCTISA
May 30, 2005
Description
PCTISA
May 30, 2005
Drawings
PCTISA