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The patent EP3255321 was granted to Nichias on Oct 18, 2023. The application was originally filed on Feb 2, 2016 under application number EP16746318A. 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 |
|---|---|---|---|
| IDT INDUSTRIE UND DICHTUNGSTECHNIK | Sep 30, 2021 | RAU | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| INTERNATIONAL-SEARCH-REPORT | JP2010159428 |
| INTERNATIONAL-SEARCH-REPORT | JP2010159852 |
| INTERNATIONAL-SEARCH-REPORT | JP2011144881 |
| INTERNATIONAL-SEARCH-REPORT | JP2012193750 |
| INTERNATIONAL-SEARCH-REPORT | JPH07165470 |
| INTERNATIONAL-SEARCH-REPORT | WO2015015737 |
| OPPOSITION | DE112007000823T |
| OPPOSITION | EP1033394 |
| SEARCH | EP1247033 |
| SEARCH | EP3029122 |
| SEARCH | GB2010417 |
| SEARCH | WO2010100469 |
| SEARCH | WO9853022 |
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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Sep 21, 2023
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OPPO
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Feb 1, 2021
Jan 11, 2021
Decision to grant a European patent
Search/Exam
Dec 11, 2020
(Electronic) Receipt
Search/Exam
Dec 11, 2020
Filing of the translations of the claims
Search/Exam
Dec 11, 2020
French translation of claims
Search/Exam
Dec 11, 2020
German translation of the claims
Search/Exam
Dec 11, 2020
Letter accompanying subsequently filed items
Search/Exam
Aug 14, 2020
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Aug 14, 2020
Intention to grant (signatures)
Search/Exam
Aug 14, 2020
Text intended for grant (clean copy)
Search/Exam
Aug 14, 2020
Mar 13, 2020
(Electronic) Receipt
Search/Exam
Mar 13, 2020
Amended claims with annotations
Search/Exam
Mar 13, 2020
Amended description with annotations
Search/Exam
Mar 13, 2020
Claims
Search/Exam
Mar 13, 2020
Description
Search/Exam
Mar 13, 2020
Letter accompanying subsequently filed items
Search/Exam
Mar 13, 2020
Nov 12, 2019
Annex to the communication
Search/Exam
Nov 12, 2019
Communication from the Examining Division
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Nov 5, 2019
Examination started
Search/Exam
Jun 20, 2019
(Electronic) Receipt
Search/Exam
Jun 20, 2019
Jun 20, 2019
Amended claims with annotations
Search/Exam
Jun 20, 2019
Amendments received before examination
Search/Exam
Jun 20, 2019
Letter accompanying subsequently filed items
Search/Exam
Dec 11, 2018
Nov 22, 2018
Nov 22, 2018
European search opinion
Search/Exam
Nov 22, 2018
Information on Search Strategy
Search/Exam
Nov 22, 2018
Supplementary European search report
Search/Exam
Nov 13, 2018
Search started
Search/Exam
Mar 14, 2018
(Electronic) Receipt
Search/Exam
Mar 14, 2018
Letter accompanying subsequently filed items
Search/Exam
Feb 23, 2018
(Electronic) Receipt
Search/Exam
Feb 23, 2018
Feb 23, 2018
Amended claims with annotations
Search/Exam
Feb 23, 2018
Amendments received before examination
Search/Exam
Feb 23, 2018
Letter accompanying subsequently filed items
Search/Exam
Dec 20, 2017
Nov 21, 2017
(Electronic) Receipt
Search/Exam
Nov 21, 2017
Amended description with annotations
Search/Exam
Nov 21, 2017
Description
Search/Exam
Nov 21, 2017
Letter accompanying subsequently filed items
Search/Exam
Nov 21, 2017
Matter concerning the application
Search/Exam
Nov 15, 2017
Notification of forthcoming publication
Search/Exam
Sep 13, 2017
Sep 13, 2017
Refund of fees
Search/Exam
Sep 6, 2017
Communication to designated inventor
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Sep 6, 2017
Communication to designated inventor
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Sep 6, 2017
Communication to designated inventor
Search/Exam
Aug 31, 2017
(Electronic) Receipt
Search/Exam
Aug 31, 2017
General enquiry
Search/Exam
Aug 31, 2017
Letter accompanying subsequently filed items
Search/Exam
Aug 23, 2017
Aug 23, 2017
Aug 11, 2017
(Electronic) Receipt
Search/Exam
Aug 11, 2017
(Electronic) Receipt
Search/Exam
Aug 11, 2017
Letter accompanying subsequently filed items
Search/Exam
Aug 11, 2017
Letter accompanying subsequently filed items
Search/Exam
Aug 11, 2017
Letter concerning fees and payments
Search/Exam
Aug 11, 2017
Payment of fees and costs
Search/Exam
Aug 2, 2017
(Electronic) Receipt
Search/Exam
Aug 2, 2017
Abstract
Search/Exam
Aug 2, 2017
Claims
Search/Exam
Aug 2, 2017
Description
Search/Exam
Aug 2, 2017
Drawings
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Aug 2, 2017
Request for entry into the European phase
Search/Exam
Jun 19, 2017
Information on entry into European phase
Search/Exam
Aug 30, 2016
Aug 30, 2016
Aug 11, 2016
Copy of the international search report
Search/Exam
Aug 11, 2016
Aug 11, 2016
International publication pamphlet
Search/Exam