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The patent EP3983312 was granted to Altachem on Aug 17, 2022. The application was filed on Mar 18, 2021 under application number EP21712513A. The patent is currently recorded with a legal status of "Opposition Rejected".

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 |
|---|---|---|---|
| PLAST MET II SP Z OO SPK | May 17, 2023 | JWP PATENT & TRADEMARK ATTORNEYS | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| INTERNATIONAL-SEARCH-REPORT | DE19809290 |
| INTERNATIONAL-SEARCH-REPORT | FR555656 |
| INTERNATIONAL-SEARCH-REPORT | US290663 |
| INTERNATIONAL-SEARCH-REPORT | WO2011066062 |
| OPPOSITION | CA2891462 |
| OPPOSITION | DE19809290 |
| OPPOSITION | JP2006044684 |
| OPPOSITION | US4236736 |
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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Decision to grant a European patent
Search/Exam
Jul 8, 2022
(Electronic) Receipt
Search/Exam
Jul 8, 2022
Filing of the translations of the claims
Search/Exam
Jul 8, 2022
French translation of claims
Search/Exam
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German translation of the claims
Search/Exam
Jul 8, 2022
Letter accompanying subsequently filed items
Search/Exam
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Intention to grant (signatures)
Search/Exam
Apr 20, 2022
Text intended for grant (clean copy)
Search/Exam
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Examination started
Search/Exam
Feb 21, 2022
(Electronic) Receipt
Search/Exam
Feb 21, 2022
Letter accompanying subsequently filed items
Search/Exam
Feb 21, 2022
Matter concerning the application
Search/Exam
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(Electronic) Receipt
Search/Exam
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Letter accompanying subsequently filed items
Search/Exam
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Matter concerning the application
Search/Exam
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(Electronic) Receipt
Search/Exam
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Letter accompanying subsequently filed items
Search/Exam
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Matter concerning the application
Search/Exam
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Priority search results copy provided by EPO
Search/Exam
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(Electronic) Receipt
Search/Exam
Jan 5, 2022
Request for entry into the European phase
Search/Exam
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Copy of the international search report
Search/Exam
Sep 23, 2021
Published international application - A1
Search/Exam
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(Electronic) Receipt
PCTRO
Mar 18, 2021
Abstract
PCTRO
Mar 18, 2021
Claims
PCTRO
Mar 18, 2021
Description
PCTRO
Mar 18, 2021
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Drawings
PCTRO
Mar 18, 2021