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The patent EP3796929 was granted to Ipsen Biopharm on Sep 18, 2024. The application was filed on May 21, 2019 under application number EP19725358A. 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 |
|---|---|---|---|
| MERZ PHARMA | Jun 18, 2025 | WALLINGER RICKER SCHLOTTER TOSTMANN | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | US2007166332 |
| DESCRIPTION | US5223409 |
| DESCRIPTION | WO2007104567 |
| DESCRIPTION | WO2008008803 |
| DESCRIPTION | WO2008008805 |
| DESCRIPTION | WO2011018665 |
| DESCRIPTION | WO2011022357 |
| DESCRIPTION | WO9206204 |
| DESCRIPTION | WO9421300 |
| DESCRIPTION | WO9633273 |
| DESCRIPTION | WO9807864 |
| DESCRIPTION | WO9932272 |
| EXAMINATION | US2013324535 |
| INTERNATIONAL-SEARCH-REPORT | US2012230975 |
| INTERNATIONAL-SEARCH-REPORT | US2014099294 |
| INTERNATIONAL-SEARCH-REPORT | US6641820 |
| OPPOSITION | US2006275325 |
| OPPOSITION | US2013324535 |
| OPPOSITION | US6641820 |
| OPPOSITION | WO2019224184 |
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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Description
OPPO
Nov 3, 2025
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OPPO
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OPPO
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OPPO
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Nov 3, 2025
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Oct 1, 2024
Aug 22, 2024
Decision to grant a European patent
Search/Exam
Aug 9, 2024
(Electronic) Receipt
Search/Exam
Aug 9, 2024
Filing of the translations of the claims
Search/Exam
Aug 9, 2024
French translation of claims
Search/Exam
Aug 9, 2024
German translation of the claims
Search/Exam
Aug 9, 2024
Letter accompanying subsequently filed items
Search/Exam
Jul 12, 2024
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Intention to grant (signatures)
Search/Exam
Jul 12, 2024
Text intended for grant (clean copy)
Search/Exam
Jul 12, 2024
Jun 28, 2024
(Electronic) Receipt
Search/Exam
Jun 28, 2024
Amended description with annotations
Search/Exam
Jun 28, 2024
Description
Search/Exam
Jun 28, 2024
Letter accompanying subsequently filed items
Search/Exam
Jun 28, 2024
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May 15, 2024
Intention to grant (signatures)
Search/Exam
May 15, 2024
Text intended for grant (clean copy)
Search/Exam
May 15, 2024
Dec 14, 2023
(Electronic) Receipt
Search/Exam
Dec 14, 2023
Amended claims with annotations
Search/Exam
Dec 14, 2023
Amended description with annotations
Search/Exam
Dec 14, 2023
Claims
Search/Exam
Dec 14, 2023
Description
Search/Exam
Dec 14, 2023
Letter accompanying subsequently filed items
Search/Exam
Dec 14, 2023
Dec 7, 2023
Annex to the communication
Search/Exam
Dec 7, 2023
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Jul 20, 2023
(Electronic) Receipt
Search/Exam
Jul 20, 2023
Amended claims with annotations
Search/Exam
Jul 20, 2023
Claims
Search/Exam
Jul 20, 2023
Letter accompanying subsequently filed items
Search/Exam
Jul 20, 2023
Mar 28, 2023
Annex to the communication
Search/Exam
Mar 28, 2023
Communication from the Examining Division
Search/Exam
Mar 20, 2023
Examination started
Search/Exam
Aug 2, 2021
(Electronic) Receipt
Search/Exam
Aug 2, 2021
Aug 2, 2021
Amended claims with annotations
Search/Exam
Aug 2, 2021
Amendments received before examination
Search/Exam
Aug 2, 2021
Letter accompanying subsequently filed items
Search/Exam
Mar 3, 2021
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Document concerning representation
Search/Exam
Jan 21, 2021
Document concerning representation
Search/Exam
Jan 21, 2021
Letter accompanying subsequently filed items
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Jan 19, 2021
Communication to designated inventor
Search/Exam
Jan 19, 2021
Communication to designated inventor
Search/Exam
Jan 14, 2021
Priority search results copy provided by EPO
Search/Exam
Dec 18, 2020
(Electronic) Receipt
Search/Exam
Dec 18, 2020
Matter concerning the application
Search/Exam
Dec 18, 2020
Request for entry into the European phase
Search/Exam
Dec 18, 2020
Submission concerning representation
Search/Exam
Dec 14, 2020
Oct 2, 2020
Information on entry into European phase
Search/Exam
Jan 3, 2020
Nov 28, 2019
Copy of the international search report
Search/Exam
Nov 28, 2019
Published international application - A1
Search/Exam
Jul 29, 2019
(Electronic) Receipt
PCTRO
Jul 29, 2019
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Jul 18, 2019
ISR: cited documents
PCTISA
Jul 18, 2019
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(Electronic) Receipt
PCTRO
May 21, 2019
Abstract
PCTRO
May 21, 2019
Claims
PCTRO
May 21, 2019
Description
PCTRO
May 21, 2019
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Drawings
PCTRO
May 21, 2019
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