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The patent EP3487861 was granted to Clariant on Dec 1, 2021. The application was filed on Jul 12, 2017 under application number EP17740721A. 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 |
|---|---|---|---|
| GREENCHEMICALS | Aug 31, 2022 | MOZZI | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | DE10359815 |
| INTERNATIONAL-SEARCH-REPORT | DE10359815 |
| OPPOSITION | CN103044868 |
| OPPOSITION | CN103073575 |
| OPPOSITION | CN103073577 |
| OPPOSITION | CN103172666 |
| OPPOSITION | DE10359815 |
| OPPOSITION | US7259200 |
| OPPOSITION | US7635785 |
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.
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Description
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Letter accompanying subsequently filed items
Search/Exam
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Decision to grant a European patent
Search/Exam
Oct 25, 2021
(Electronic) Receipt
Search/Exam
Oct 25, 2021
English translation of the claims
Search/Exam
Oct 25, 2021
Filing of the translations of the claims
Search/Exam
Oct 25, 2021
French translation of claims
Search/Exam
Oct 25, 2021
Letter accompanying subsequently filed items
Search/Exam
Oct 21, 2021
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Intention to grant (signatures)
Search/Exam
Oct 21, 2021
Text intended for grant (clean copy)
Search/Exam
Oct 21, 2021
Jul 13, 2021
(Electronic) Receipt
Search/Exam
Jul 13, 2021
Claims
Search/Exam
Jul 13, 2021
English translation of the claims
Search/Exam
Jul 13, 2021
French translation of claims
Search/Exam
Jul 13, 2021
Letter accompanying subsequently filed items
Search/Exam
Jul 13, 2021
Apr 1, 2021
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Intention to grant (signatures)
Search/Exam
Apr 1, 2021
Text intended for grant (clean copy)
Search/Exam
Apr 1, 2021
Nov 13, 2020
(Electronic) Receipt
Search/Exam
Nov 13, 2020
Amended description with annotations
Search/Exam
Nov 13, 2020
Description
Search/Exam
Nov 13, 2020
Letter accompanying subsequently filed items
Search/Exam
Nov 13, 2020
Sep 14, 2020
Annex to the communication
Search/Exam
Sep 14, 2020
Communication from the Examining Division
Search/Exam
Aug 10, 2020
Aug 5, 2020
Annex
Search/Exam
Aug 5, 2020
Letter accompanying subsequently filed items
Search/Exam
Jul 29, 2020
Annexes in respect of a client data request
Search/Exam
Jul 29, 2020
Annexes in respect of a client data request
Search/Exam
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Annexes in respect of a client data request
Search/Exam
Jul 29, 2020
Annexes in respect of a client data request
Search/Exam
Jul 29, 2020
Annexes in respect of a client data request
Search/Exam
Jul 29, 2020
Letter accompanying subsequently filed items
Search/Exam
Jul 29, 2020
Jun 30, 2020
(Electronic) Receipt
Search/Exam
Jun 30, 2020
Amended claims with annotations
Search/Exam
Jun 30, 2020
Claims
Search/Exam
Jun 30, 2020
Letter accompanying subsequently filed items
Search/Exam
Jun 30, 2020
Jun 16, 2020
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(Electronic) Receipt
Search/Exam
Jun 10, 2020
Letter accompanying subsequently filed items
Search/Exam
Jun 10, 2020
Feb 13, 2020
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Annex to the communication
Search/Exam
Feb 12, 2020
Communication from the Examining Division
Search/Exam
Feb 10, 2020
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Feb 7, 2020
Examination started
Search/Exam
Nov 5, 2019
(Electronic) Receipt
Search/Exam
Nov 5, 2019
Letter accompanying subsequently filed items
Search/Exam
Nov 5, 2019
Priority search results
Search/Exam
Nov 5, 2019
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Matter concerning the application
Search/Exam
Mar 1, 2019
Feb 27, 2019
Communication to designated inventor
Search/Exam
Feb 27, 2019
Communication to designated inventor
Search/Exam
Feb 27, 2019
Communication to designated inventor
Search/Exam
Feb 5, 2019
Dec 21, 2018
(Electronic) Receipt
Search/Exam
Dec 21, 2018
Request for entry into the European phase
Search/Exam
Nov 30, 2018
Information on entry into European phase
Search/Exam
Feb 12, 2018
Jan 25, 2018
Copy of the international search report
Search/Exam
Jan 25, 2018
Copy of the international search report
Search/Exam
Jan 25, 2018
Published international application - A1
Search/Exam
Sep 6, 2017
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(Electronic) Receipt
PCTRO
Jul 12, 2017
Abstract
PCTRO
Jul 12, 2017
Claims
PCTRO
Jul 12, 2017
Description
PCTRO
Jul 12, 2017
Jul 12, 2017