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The patent EP3791896 was granted to Astellas Pharma on Jan 10, 2024. The application was filed on May 21, 2013 under application number EP20194625A. The patent is currently recorded with a legal status of "Revoked".

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 |
|---|---|---|---|
| DR H ULRICH DORRIES | Oct 10, 2024 | DORRIES | ADMISSIBLE |
| DR H ULRICH DORRIES | Oct 10, 2024 | DORRIES, HANS ULRICH , DF-MP DORRIES FRANK-MOLNIA & POHLMAN | ADMISSIBLE |
| DR STRAUS | Oct 10, 2024 | STRAUS | ADMISSIBLE |
| MAIWALD | Oct 8, 2024 | MAIWALD | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | EP0338841 |
| DESCRIPTION | US2003118592 |
| DESCRIPTION | US2003133939 |
| DESCRIPTION | WO0243478 |
| DESCRIPTION | WO2004035607 |
| DESCRIPTION | WO8704462 |
| DESCRIPTION | WO8901036 |
| OPPOSITION | EP3254695 |
| OPPOSITION | WO2007059997 |
| OPPOSITION | WO2008145338 |
| OPPOSITION | WO2013174510 |
| OTHER | EP3254695 |
| SEARCH | US2012020989 |
| SEARCH | WO2008145338 |
| SEARCH | WO2010009794 |
| SEARCH | WO2011090005 |
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
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Dec 4, 2023
(Electronic) Receipt
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Dec 4, 2023
French translation of claims
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Dec 4, 2023
German translation of the claims
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Dec 4, 2023
Letter accompanying subsequently filed items
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Nov 10, 2023
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Intention to grant (signatures)
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Nov 10, 2023
Text intended for grant (clean copy)
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Nov 10, 2023
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(Electronic) Receipt
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May 22, 2023
Amended claims with annotations
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May 22, 2023
Amended description with annotations
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May 22, 2023
Claims
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May 22, 2023
Description
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May 22, 2023
Letter accompanying subsequently filed items
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May 22, 2023
May 4, 2023
Annex to the communication
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May 4, 2023
Communication from the Examining Division
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Mar 3, 2023
(Electronic) Receipt
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Mar 3, 2023
Amended claims with annotations
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Mar 3, 2023
Claims
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Mar 3, 2023
Letter accompanying subsequently filed items
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Annex to the communication
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Oct 25, 2022
Communication from the Examining Division
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Jun 23, 2022
(Electronic) Receipt
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Jun 23, 2022
Amended claims with annotations
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Jun 23, 2022
Amended description with annotations
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Jun 23, 2022
Claims
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Jun 23, 2022
Description
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Jun 23, 2022
Letter accompanying subsequently filed items
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Jun 23, 2022
May 11, 2022
Annex to the communication
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May 11, 2022
Communication from the Examining Division
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Feb 18, 2022
(Electronic) Receipt
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Feb 18, 2022
Amended claims with annotations
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Feb 18, 2022
Claims
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Feb 18, 2022
Letter accompanying subsequently filed items
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Feb 18, 2022
Oct 21, 2021
Annex to the communication
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Oct 21, 2021
Communication from the Examining Division
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Oct 18, 2021
Examination started
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Jun 24, 2021
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Jun 21, 2021
(Electronic) Receipt
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Jun 21, 2021
Letter accompanying subsequently filed items
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Jun 21, 2021
Observations by third parties
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Apr 13, 2021
(Electronic) Receipt
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Apr 13, 2021
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Amended description with annotations
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Apr 13, 2021
Amendments received before examination
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Apr 13, 2021
Letter accompanying subsequently filed items
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Mar 22, 2021
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Refund of fees
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Feb 17, 2021
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European search opinion
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Feb 17, 2021
European search report
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Feb 17, 2021
Information on Search Strategy
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Feb 17, 2021
Notification of forthcoming publication
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Feb 5, 2021
Search started
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Nov 30, 2020
Nov 24, 2020
Letter which had not been notified
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Nov 10, 2020
Priority search results copy provided by EPO
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Oct 29, 2020
(Electronic) Receipt
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Oct 29, 2020
Claims
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Oct 29, 2020
Letter accompanying subsequently filed items
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Oct 28, 2020
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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Communication to designated inventor
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Communication to designated inventor
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Communication to designated inventor
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Sep 15, 2020
Invitation to file claims
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Sep 4, 2020
Abstract
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Converted Sequence Listing
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Sep 4, 2020
Description
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Sep 4, 2020
Designation of inventor
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Sep 4, 2020
Drawings
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Sep 4, 2020
Request for grant of a European patent
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Dec 19, 2013