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The patent EP4133277 was granted to Bioaster on Aug 14, 2024. The application was filed on Apr 8, 2021 under application number EP21723881A. 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 |
|---|---|---|---|
| SIMMONS & SIMMONS | May 14, 2025 | SIMMONS & SIMMONS MUNICH | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| INTERNATIONAL-SEARCH-REPORT | WO2018202864 |
| OPPOSITION | WO2018202864 |
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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Decision to grant a European patent
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(Electronic) Receipt
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English translation of the claims
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Jul 10, 2024
Filing of the translations of the claims
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Jul 10, 2024
German translation of the claims
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Jul 10, 2024
Letter accompanying subsequently filed items
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Intention to grant (signatures)
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Text intended for grant (clean copy)
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(Electronic) Receipt
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Feb 9, 2024
Amended description with annotations
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Feb 9, 2024
Description
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Feb 9, 2024
Letter accompanying subsequently filed items
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(Electronic) Receipt
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Nov 6, 2023
Annexes in respect of a client data request
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Letter accompanying subsequently filed items
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Annex to the communication
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Oct 25, 2023
Communication from the Examining Division
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Oct 20, 2023
Examination started
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May 23, 2023
(Electronic) Receipt
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May 23, 2023
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Amended claims with annotations
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May 23, 2023
Amendments received before examination
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May 23, 2023
Letter accompanying subsequently filed items
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Priority search results copy provided by EPO
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(Electronic) Receipt
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Request for entry into the European phase
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Aug 19, 2022
Information on entry into European phase
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Nov 1, 2021
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Copy of the international search report
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Oct 14, 2021
Copy of the international search report
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Oct 14, 2021
Published international application - A1
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Jul 6, 2021
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ISR: cited documents
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Abstract
PCTISA
May 11, 2021
Claims
PCTISA
May 11, 2021
Description
PCTISA
May 11, 2021
Drawings
PCTISA
May 11, 2021
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(Electronic) Receipt
PCTISA
Apr 15, 2021