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The patent EP2581410 was granted to Nakanishi Metal Works on Mar 5, 2025. The application was filed on Jun 8, 2010 under application number EP10852865A. The patent is currently recorded with a legal status of "Patent Maintained As Amended".

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 |
|---|---|---|---|
| AECHTER | Sep 6, 2018 | TER MEER STEINMEISTER & PARTNER | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | JP2003287040 |
| DESCRIPTION | JP2005180575 |
| DESCRIPTION | JP2008163989 |
| EXAMINATION | EP2030777 |
| EXAMINATION | JP2004346193 |
| EXAMINATION | JP2007039557 |
| EXAMINATION | JP2008179663 |
| INTERNATIONAL-SEARCH-REPORT | JP2003001762 |
| INTERNATIONAL-SEARCH-REPORT | JPH11279284 |
| INTERNATIONAL-SEARCH-REPORT | WO9617015 |
| SEARCH | EP0795580 |
| SEARCH | JP2001214152 |
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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Feb 6, 2025
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OPPO
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Description
OPPO
Feb 28, 2024
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(Electronic) Receipt
Appeal
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(Electronic) Receipt
Appeal
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(Electronic) Receipt
Appeal
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(Electronic) Receipt
Appeal
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(Electronic) Receipt
Appeal
Apr 21, 2023
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Advice of delivery
Appeal
Jun 10, 2022
Advice of delivery
Appeal
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Apr 1, 2022
(Electronic) Receipt
Appeal
Apr 1, 2022
Apr 1, 2022
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May 18, 2021
(Electronic) Receipt
Appeal
May 18, 2021
May 18, 2021
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(Electronic) Receipt
Appeal
May 3, 2021
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Apr 8, 2021
Feb 3, 2021
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(Electronic) Receipt
Appeal
Jan 29, 2021
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(Electronic) Receipt
Appeal
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Reply to appeal
Appeal
May 6, 2020
Apr 29, 2020
(Electronic) Receipt
Appeal
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Feb 21, 2020
(Electronic) Receipt
Appeal
Feb 21, 2020
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Notice of appeal
Appeal
Jan 10, 2020
Jan 3, 2020
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Means of redress
OPPO
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Claims
OPPO
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Dec 14, 2017
Nov 9, 2017
Decision to grant a European patent
Search/Exam
Oct 26, 2017
(Electronic) Receipt
Search/Exam
Oct 26, 2017
Filing of the translations of the claims
Search/Exam
Oct 26, 2017
French translation of claims
Search/Exam
Oct 26, 2017
German translation of the claims
Search/Exam
Oct 26, 2017
Letter accompanying subsequently filed items
Search/Exam
Jun 29, 2017
Jun 29, 2017
Jun 29, 2017
Intention to grant (signatures)
Search/Exam
Jun 29, 2017
Text intended for grant (clean copy)
Search/Exam
Jun 29, 2017
Dec 22, 2016
(Electronic) Receipt
Search/Exam
Dec 22, 2016
Amended claims with annotations
Search/Exam
Dec 22, 2016
Amended description with annotations
Search/Exam
Dec 22, 2016
Claims
Search/Exam
Dec 22, 2016
Description
Search/Exam
Dec 22, 2016
Letter accompanying subsequently filed items
Search/Exam
Dec 22, 2016
Sep 1, 2016
Annex to a communication
Search/Exam
Sep 1, 2016
Annex to the communication
Search/Exam
Sep 1, 2016
Communication from the Examining Division
Search/Exam
Aug 22, 2016
Examination started
Search/Exam
Jun 9, 2016
Jun 1, 2016
Oct 23, 2015
Submission concerning representation
Search/Exam
Apr 24, 2014
Apr 24, 2014
Amended claims with annotations
Search/Exam
Apr 24, 2014
Apr 24, 2014
Amended description with annotations
Search/Exam
Apr 24, 2014
Amendments received before examination
Search/Exam
Jan 14, 2014
Submission concerning representation
Search/Exam
Oct 29, 2013
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European search opinion
Search/Exam
Oct 10, 2013
Supplementary European search report
Search/Exam
Mar 20, 2013
Notification of forthcoming publication
Search/Exam
Jan 29, 2013
Jan 24, 2013
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Communication to designated inventor
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Jan 22, 2013
Communication to designated inventor
Search/Exam
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Communication to designated inventor
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Jan 22, 2013
Communication to designated inventor
Search/Exam
Jan 2, 2013
Dec 19, 2012
(Electronic) Receipt
Search/Exam
Dec 19, 2012
Abstract
Search/Exam
Dec 19, 2012
Claims
Search/Exam
Dec 19, 2012
Description
Search/Exam
Dec 19, 2012
Request for entry into the European phase
Search/Exam
Oct 19, 2012
Information on entry into European phase
Search/Exam
Dec 15, 2011
Copy of the international search report
Search/Exam
Dec 15, 2011
Dec 15, 2011
International publication pamphlet
Search/Exam