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The patent EP3999643 was granted to Biogen MA on Nov 22, 2023. The application was filed on Jul 16, 2020 under application number EP20753556A. The patent is currently recorded with a legal status of "Granted And Under Opposition".
A treatment regimen for spinal muscular atrophy (SMA) that rapidly achieves and maintains higher concentrations of antisense compound in patients with SMA. The regimen involves administering a loading dose of the antisense compound at a concentration of 50 mg/mL followed by maintenance doses of 28 mg/mL. This approach enables patients to achieve therapeutic levels of the antisense compound earlier than the approved 12 mg dose of nusinersen, thereby enhancing treatment efficacy. The regimen can be administered intrathecally or intrathecal bolus injections.

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 |
|---|---|---|---|
| ADALVO | Aug 22, 2024 | CASALPRIM CASTELLA | ADMISSIBLE |
| GENERICS UK | Aug 21, 2024 | TER MEER STEINMEISTER & PARTNER | ADMISSIBLE |
| TEVA PHARMACEUTICALS | Aug 21, 2024 | VON KAUFFMANN | ADMISSIBLE |
| POLPHARMA | Aug 20, 2024 | ELKINGTON AND FIFE | ADMISSIBLE |
| SANDOZ | Aug 13, 2024 | ELKINGTON AND FIFE | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | WO2007002390 |
| DESCRIPTION | WO2011032109 |
| DESCRIPTION | WO2019122125 |
| DESCRIPTION | WO2019147960 |
| DESCRIPTION | WO2019197954 |
| INTERNATIONAL-SEARCH-REPORT | WO2014110291 |
| INTERNATIONAL-SEARCH-REPORT | WO2016040748 |
| OPPOSITION | EP3449926 |
| OPPOSITION | WO2010148249 |
| OPPOSITION | WO2014110291 |
| OPPOSITION | WO2016040748 |
| OPPOSITION | WO2021016032 |
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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Jul 31, 2024
(Electronic) Receipt
Search/Exam
Jul 31, 2024
Letter accompanying subsequently filed items
Search/Exam
Jul 31, 2024
Dec 5, 2023
Oct 26, 2023
Decision to grant a European patent
Search/Exam
Oct 12, 2023
(Electronic) Receipt
Search/Exam
Oct 12, 2023
Filing of the translations of the claims
Search/Exam
Oct 12, 2023
French translation of claims
Search/Exam
Oct 12, 2023
German translation of the claims
Search/Exam
Oct 12, 2023
Letter accompanying subsequently filed items
Search/Exam
Sep 7, 2023
Sep 7, 2023
Sep 7, 2023
Sep 7, 2023
Intention to grant (signatures)
Search/Exam
Sep 7, 2023
Text intended for grant (clean copy)
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Sep 7, 2023
May 17, 2023
(Electronic) Receipt
Search/Exam
May 17, 2023
Amended claims with annotations
Search/Exam
May 17, 2023
Amended description with annotations
Search/Exam
May 17, 2023
Claims
Search/Exam
May 17, 2023
Description
Search/Exam
May 17, 2023
Letter accompanying subsequently filed items
Search/Exam
May 17, 2023
Apr 19, 2023
Annex to the communication
Search/Exam
Apr 19, 2023
Communication from the Examining Division
Search/Exam
Apr 13, 2023
Examination started
Search/Exam
Feb 16, 2023
(Electronic) Receipt
Search/Exam
Feb 16, 2023
Amended claims with annotations
Search/Exam
Feb 16, 2023
Claims
Search/Exam
Feb 16, 2023
Letter accompanying subsequently filed items
Search/Exam
Feb 16, 2023
Matter concerning the application
Search/Exam
Feb 14, 2023
(Electronic) Receipt
Search/Exam
Feb 14, 2023
(Electronic) Receipt
Search/Exam
Feb 14, 2023
Amended claims with annotations
Search/Exam
Feb 14, 2023
Amendments received before examination
Search/Exam
Feb 14, 2023
Claims
Search/Exam
Feb 14, 2023
Letter accompanying subsequently filed items
Search/Exam
Apr 28, 2022
Mar 1, 2022
Feb 28, 2022
(Electronic) Receipt
Search/Exam
Feb 28, 2022
Authorisation
Search/Exam
Feb 28, 2022
Letter accompanying subsequently filed items
Search/Exam
Feb 28, 2022
Matter concerning the application
Search/Exam
Feb 7, 2022
Jan 28, 2022
(Electronic) Receipt
Search/Exam
Jan 28, 2022
Jan 28, 2022
Amended claims with annotations
Search/Exam
Jan 28, 2022
Amendments received before examination
Search/Exam
Jan 28, 2022
Request for entry into the European phase
Search/Exam
Dec 3, 2021
Information on entry into European phase
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Feb 15, 2021
Jan 28, 2021
Converted Sequence Listing
Search/Exam
Jan 28, 2021
Copy of the international search report
Search/Exam
Jan 28, 2021
Published international application - A1
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Sep 18, 2020
Aug 20, 2020
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Aug 5, 2020
Abstract
PCTISA
Aug 5, 2020
Claims
PCTISA
Aug 5, 2020
Description
PCTISA
Aug 5, 2020
Drawings
PCTISA
Aug 5, 2020