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The patent EP3692092 was granted to Nouryon Chemicals on Dec 7, 2022. The application was filed on Oct 2, 2018 under application number EP18778928A. 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 |
|---|---|---|---|
| ARKEMA FRANCE | Sep 7, 2023 | BANDPAY & GREUTER | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | WO2016096779 |
| INTERNATIONAL-SEARCH-REPORT | DE102015223051 |
| INTERNATIONAL-SEARCH-REPORT | US2001044497 |
| INTERNATIONAL-SEARCH-REPORT | WO2016096779 |
| OPPOSITION | CN105482369 |
| OPPOSITION | KR101465611B |
| OPPOSITION | US2207737 |
| OPPOSITION | US2272577 |
| OPPOSITION | US2453071 |
| OPPOSITION | US3538011 |
| OPPOSITION | US5284700 |
| OPPOSITION | WO2010112534 |
| OPPOSITION | WO2016096779 |
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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Dec 20, 2022
Nov 10, 2022
Decision to grant a European patent
Search/Exam
Sep 14, 2022
(Electronic) Receipt
Search/Exam
Sep 14, 2022
French translation of claims
Search/Exam
Sep 14, 2022
German translation of the claims
Search/Exam
Sep 14, 2022
Letter accompanying subsequently filed items
Search/Exam
May 23, 2022
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May 23, 2022
Intention to grant (signatures)
Search/Exam
May 23, 2022
Text intended for grant (clean copy)
Search/Exam
May 23, 2022
May 2, 2022
Examination started
Search/Exam
Oct 8, 2020
(Electronic) Receipt
Search/Exam
Oct 8, 2020
Oct 8, 2020
Amended claims with annotations
Search/Exam
Oct 8, 2020
Amendments received before examination
Search/Exam
Oct 8, 2020
Letter accompanying subsequently filed items
Search/Exam
Jul 15, 2020
May 12, 2020
May 8, 2020
Communication to designated inventor
Search/Exam
May 8, 2020
Communication to designated inventor
Search/Exam
May 8, 2020
Communication to designated inventor
Search/Exam
May 8, 2020
Communication to designated inventor
Search/Exam
May 5, 2020
Priority search results copy provided by EPO
Search/Exam
Apr 23, 2020
Apr 20, 2020
(Electronic) Receipt
Search/Exam
Apr 20, 2020
Request for entry into the European phase
Search/Exam
Mar 3, 2020
Mar 3, 2020
Notification of the recording of a change
Search/Exam
Feb 14, 2020
Information on entry into European phase
Search/Exam
Aug 5, 2019
Aug 5, 2019
Aug 5, 2019
Notification of the recording of a change
Search/Exam
Aug 5, 2019
Notification of the recording of a change
Search/Exam
Jul 10, 2019
(Electronic) Receipt
PCTRO
May 10, 2019
Apr 11, 2019
Copy of the international search report
Search/Exam
Apr 11, 2019
Published international application - A1
Search/Exam
Jan 3, 2019
ISR: cited documents
PCTISA
Jan 2, 2019
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Oct 12, 2018
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Oct 2, 2018
(Electronic) Receipt
PCTRO
Oct 2, 2018
Abstract
PCTRO
Oct 2, 2018
Claims
PCTRO
Oct 2, 2018
Description
PCTRO
Oct 2, 2018
Oct 2, 2018
Oct 2, 2018