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The patent EP3821712 was granted to CHR Hansen on Nov 9, 2022. The application was filed on Jan 12, 2018 under application number EP20206614A. 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 |
|---|---|---|---|
| DSM ASSETS | Aug 9, 2023 | J A KEMP | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| OPPOSITION | EP2957180 |
| OPPOSITION | JPH02268644 |
| OPPOSITION | JPH0253437 |
| OPPOSITION | US2005196388 |
| OPPOSITION | US2009088391 |
| OPPOSITION | US2009238921 |
| OPPOSITION | US2016186223 |
| OPPOSITION | US4323651 |
| OPPOSITION | US5071763 |
| OPPOSITION | WO0188150 |
| OPPOSITION | WO2009071539 |
| OPPOSITION | WO2015193459 |
| OPPOSITION | WO2017125600 |
| OPPOSITION | WO2017194650 |
| OPPOSITION | WO2017216000 |
| OPPOSITION | WO2018130630 |
| OPPOSITION | WO2020079116 |
| SEARCH | US2009088391 |
| SEARCH | US2015086675 |
| SEARCH | WO2007021204 |
| SEARCH | WO2009071539 |
| SEARCH | WO2015193449 |
| SEARCH | WO2015193459 |
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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Decision to grant a European patent
Search/Exam
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(Electronic) Receipt
Search/Exam
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Filing of the translations of the claims
Search/Exam
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French translation of claims
Search/Exam
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German translation of the claims
Search/Exam
Oct 3, 2022
Letter accompanying subsequently filed items
Search/Exam
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Intention to grant (signatures)
Search/Exam
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Text intended for grant (clean copy)
Search/Exam
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Examination started
Search/Exam
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(Electronic) Receipt
Search/Exam
Nov 29, 2021
Letter accompanying subsequently filed items
Search/Exam
Nov 29, 2021
Matter concerning the application
Search/Exam
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Notification of forthcoming publication
Search/Exam
Apr 9, 2021
Refund of fees
Search/Exam
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European search opinion
Search/Exam
Apr 6, 2021
European search report
Search/Exam
Apr 6, 2021
Information on Search Strategy
Search/Exam
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Search started
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Communication to designated inventor
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Communication to designated inventor
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Communication to designated inventor
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Communication to designated inventor
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Refund of fees
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Jan 15, 2021
Priority search results copy provided by EPO
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Nov 10, 2020
Abstract
Search/Exam
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Claims
Search/Exam
Nov 10, 2020
Description
Search/Exam
Nov 10, 2020
Designation of inventor
Search/Exam
Nov 10, 2020
Previously filed application
Search/Exam
Nov 10, 2020
Request for grant of a European patent
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Nov 10, 2020
Sequence listing
Search/Exam
Aug 13, 2018
Jan 12, 2018
Converted Sequence Listing
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