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The patent EP4053125 was granted to Kumiai Chemical Industry on Dec 4, 2024. The application was filed on Oct 30, 2020 under application number EP20835297A. 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 |
|---|---|---|---|
| ADAMA AGRICULTURAL SOLUTIONS | Sep 4, 2025 | MAIWALD | ADMISSIBLE |
| KENSO AGCARE | Sep 4, 2025 | PATENTANWALTE OLBRICHT BUCHHOLD KEULERTZ | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
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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Dec 17, 2024
Nov 7, 2024
Decision to grant a European patent
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Oct 21, 2024
(Electronic) Receipt
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Oct 21, 2024
Filing of the translations of the claims
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Oct 21, 2024
French translation of claims
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Oct 21, 2024
German translation of the claims
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Oct 21, 2024
Letter accompanying subsequently filed items
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Jun 20, 2024
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Intention to grant (signatures)
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Jun 20, 2024
Text intended for grant (clean copy)
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Jun 20, 2024
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(Electronic) Receipt
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Mar 25, 2024
Amended description with annotations
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Mar 25, 2024
Description
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Mar 25, 2024
Letter accompanying subsequently filed items
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Mar 25, 2024
Mar 11, 2024
Annex to the communication
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Mar 11, 2024
Communication from the Examining Division
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Mar 4, 2024
Examination started
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Feb 20, 2024
Feb 14, 2024
Non-patent literature filed by a third party
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Feb 14, 2024
Observations by third parties
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Feb 14, 2024
Patent document filed by a Third party
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Dec 21, 2023
(Electronic) Receipt
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Dec 21, 2023
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Amended claims with annotations
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Dec 21, 2023
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Amended description with annotations
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Dec 21, 2023
Amendments received before examination
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Dec 21, 2023
Letter accompanying subsequently filed items
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Letter accompanying subsequently filed items
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European search opinion
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Jun 2, 2023
Information on Search Strategy
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Jun 2, 2023
Supplementary European search report
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Mar 6, 2023
Feb 22, 2023
Citation filed by a third party
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Feb 22, 2023
Non-patent literature filed by a third party
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Non-patent literature filed by a third party
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Non-patent literature filed by a third party
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Non-patent literature filed by a third party
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Observations by third parties
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Patent document filed by a Third party
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Patent document filed by a Third party
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Patent document filed by a Third party
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Patent document filed by a Third party
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Dec 16, 2022
(Electronic) Receipt
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Dec 16, 2022
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Amended claims with annotations
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Dec 16, 2022
Amendments received before examination
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Dec 16, 2022
Letter accompanying subsequently filed items
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Nov 9, 2022
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(Electronic) Receipt
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Oct 25, 2022
Letter accompanying subsequently filed items
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Observations by third parties
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Patent document filed by a Third party
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Patent document filed by a Third party
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Patent document filed by a Third party
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Aug 10, 2022
Notification of forthcoming publication
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Jun 17, 2022
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May 30, 2022
(Electronic) Receipt
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May 30, 2022
Abstract
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May 30, 2022
Abstract
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May 30, 2022
Claims
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May 30, 2022
Description
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May 30, 2022
Drawings
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May 30, 2022
Request for entry into the European phase
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May 16, 2022
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Nov 12, 2021
Information on entry into European phase
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Apr 15, 2021
Copy of the international search report
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Copy of the international search report
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International publication pamphlet
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