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The patent EP2531020 was granted to Aktiebolaget Ludvig Svensson on May 23, 2018. The application was filed on Feb 4, 2011 under application number EP11740115A. The patent is currently recorded with a legal status of "Granted And Under Opposition".

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 |
|---|---|---|---|
| IFG EXELTO | Feb 25, 2019 | GEVERS PATENTS | ADMISSIBLE |
| RIDDER CLIMATE SCREENS | Feb 25, 2019 | ARNOLD & SIEDSMA | ADMISSIBLE |
| RIDDER CLIMATE SCREENS | Feb 25, 2019 | BARTELDS | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| INTERNATIONAL-SEARCH-REPORT | EP0109951 |
| INTERNATIONAL-SEARCH-REPORT | JP2000079671 |
| INTERNATIONAL-SEARCH-REPORT | JP2006055002 |
| INTERNATIONAL-SEARCH-REPORT | JPH08308402 |
| INTERNATIONAL-SEARCH-REPORT | JPH09239890 |
| INTERNATIONAL-SEARCH-REPORT | US6080688 |
| INTERNATIONAL-SEARCH-REPORT | WO02070253 |
| INTERNATIONAL-SEARCH-REPORT | WO02070255 |
| OPPOSITION | DE3632533 |
| OPPOSITION | EP0109951 |
| OPPOSITION | EP0824076 |
| OPPOSITION | EP1118635 |
| OPPOSITION | JP2003191418 |
| OPPOSITION | JP2009072113 |
| OPPOSITION | US2004097621 |
| OPPOSITION | US2010080940 |
| OPPOSITION | US7189451 |
| OPPOSITION | WO02070253 |
| OPPOSITION | WO02070255 |
| OPPOSITION | WO9422288 |
| SEARCH | DE20103953U |
| SEARCH | EP0109951 |
| SEARCH | US5469607 |
| SEARCH | US6080688 |
| SEARCH | WO02070255 |
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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Withdrawal of an appeal
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Reply to appeal
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Notice of appeal
Appeal
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Reply to appeal
Appeal
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(Electronic) Receipt
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Reply to appeal
Appeal
Sep 27, 2021
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(Electronic) Receipt
Appeal
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(Electronic) Receipt
Appeal
Jul 14, 2021
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Notice of appeal
Appeal
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Jun 4, 2018
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Decision to grant a European patent
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Mar 28, 2018
(Electronic) Receipt
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Mar 28, 2018
French translation of claims
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Mar 28, 2018
German translation of the claims
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Mar 28, 2018
Letter accompanying subsequently filed items
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Mar 28, 2018
Letter concerning the inventor
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Intention to grant (signatures)
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Dec 20, 2017
Text intended for grant (clean copy)
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Dec 20, 2017
Oct 24, 2017
Examination started
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Aug 14, 2017
(Electronic) Receipt
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Aug 14, 2017
Priority search results
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Aug 14, 2017
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(Electronic) Receipt
Search/Exam
Jun 26, 2017
Letter accompanying subsequently filed items
Search/Exam
Jun 26, 2017
Maintenance of the application
Search/Exam
Feb 9, 2017
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European search opinion
Search/Exam
Jan 23, 2017
Information on Search Strategy
Search/Exam
Jan 23, 2017
Supplementary European search report
Search/Exam
Nov 23, 2016
Search started
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Jul 28, 2014
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Mar 12, 2014
Submission concerning representation
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Feb 27, 2014
Letter concerning fees and payments
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Feb 6, 2014
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Annexes in respect of a client data request
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Nov 18, 2013
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Letter concerning fees and payments
Search/Exam
Nov 14, 2012
Oct 4, 2012
Sep 17, 2012
Communication to designated inventor
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Sep 17, 2012
Communication to designated inventor
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Aug 30, 2012
(Electronic) Receipt
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Aug 30, 2012
Request for entry into the European phase
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Aug 15, 2012
Jun 15, 2012
Information on entry into European phase
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Feb 17, 2012
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Dec 28, 2011
Notification of election of EPO
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Dec 16, 2011
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PCT demand form
PCT2
Nov 29, 2011
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Nov 29, 2011
PCT demand form
PCT2
Aug 29, 2011
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Aug 11, 2011
Copy of the international search report
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Aug 11, 2011
Published international application - A1
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