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The patent EP2970101 was granted to Alkermes Pharma Ireland on Sep 3, 2025. The application was originally filed on Mar 14, 2014 under application number EP14767892A. The patent is currently recorded with a legal status of "Patent Maintained As Amended".
Novel prodrugs of monomethyl fumarate for treating neurological diseases, including multiple sclerosis, characterized by improved properties such as reduced gastrointestinal side effects, decreased food effect, and enhanced physical stability compared to dimethyl fumarate. The prodrugs are designed to provide sustained release of the active moiety, enabling once- or twice-daily dosing and improved patient compliance.

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 |
|---|---|---|---|
| GENERICS UK | Mar 6, 2019 | ELKINGTON AND FIFE | ADMISSIBLE |
| HEXAL | Mar 6, 2019 | KRAUS & LEDERER | ADMISSIBLE |
| HEXAL | Mar 6, 2019 | KRAUS & LEDERER PARTGMBB | ADMISSIBLE |
| TEVA PHARMACEUTICALS | Mar 5, 2019 | D YOUNG | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | US2006205659 |
| DESCRIPTION | US2007027076 |
| DESCRIPTION | US2008089896 |
| DESCRIPTION | US2012165404 |
| DESCRIPTION | US3952741 |
| DESCRIPTION | US4160452 |
| DESCRIPTION | US4256108 |
| DESCRIPTION | US4265874 |
| DESCRIPTION | US5112621 |
| DESCRIPTION | US5464633 |
| DESCRIPTION | US5474784 |
| DESCRIPTION | US6277882 |
| DESCRIPTION | US6359003 |
| DESCRIPTION | US6436992 |
| DESCRIPTION | US6509376 |
| DESCRIPTION | US6858750 |
| DESCRIPTION | US7157423 |
| DESCRIPTION | US8007826 |
| DESCRIPTION | US8148414 |
| DESCRIPTION | WO02055063 |
| DESCRIPTION | WO2004082684 |
| DESCRIPTION | WO2005023241 |
| DESCRIPTION | WO2005027899 |
| DESCRIPTION | WO2005099701 |
| DESCRIPTION | WO2006037342 |
| DESCRIPTION | WO2007042034 |
| DESCRIPTION | WO9852549 |
| DESCRIPTION | WO9949858 |
| INTERNATIONAL-SEARCH-REPORT | WO2010022177 |
| INTERNATIONAL-SEARCH-REPORT | WO2011085211 |
| INTERNATIONAL-SEARCH-REPORT | WO2013119791 |
| INTERNATIONAL-SEARCH-REPORT | WO2013181451 |
| OPPOSITION | WO0030622 |
| OPPOSITION | WO0151047 |
| OPPOSITION | WO02081466 |
| OPPOSITION | WO2010022177 |
| OPPOSITION | WO2011085211 |
| OPPOSITION | WO2012014162 |
| OPPOSITION | WO2013119791 |
| OPPOSITION | WO2013181451 |
| SEARCH | WO2010022177 |
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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French translation of claims
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German translation of the claims
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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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Examination started
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Amended description with annotations
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Letter accompanying subsequently filed items
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Letter accompanying subsequently filed items
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Jan 11, 2017
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European search opinion
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Information on Search Strategy
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Supplementary European search report
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Search started
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Apr 15, 2016
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Letter accompanying subsequently filed items
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Letter which had not been notified
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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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Oct 19, 2015
Communication to designated inventor
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Oct 19, 2015
Communication to designated inventor
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Oct 2, 2015
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(Electronic) Receipt
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Sep 10, 2015
Matter concerning the application
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Sep 10, 2015
Request for entry into the European phase
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Sep 10, 2015
Submission concerning representation
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Jul 29, 2015
Information on entry into European phase
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Nov 19, 2014
Notification of the recording of a change
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Oct 14, 2014
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Sep 25, 2014
Copy of the international search report
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Sep 25, 2014
Published international application - A1
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