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The patent EP3263106 was granted to Eisai R&D Management on Oct 25, 2023. The application was filed on Feb 23, 2016 under application number EP16755489A. 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 |
|---|---|---|---|
| ACCORD HEALTHCARE | Jul 25, 2024 | UEXKULL & STOLBERG | ADMISSIBLE |
| GENERICS UK | Jul 25, 2024 | ELKINGTON AND FIFE | ADMISSIBLE |
| STADA ARZNEIMITTEL | Jul 25, 2024 | HAMM & WITTKOPP | ADMISSIBLE |
| SYNTHON | Jul 25, 2024 | HAMM & WITTKOPP | ADMISSIBLE |
| WELDING | Jul 25, 2024 | HAMM & WITTKOPP | ADMISSIBLE |
| MAIWALD | Jul 23, 2024 | MAIWALD | ADMISSIBLE |
| TEVA PHARMACEUTICALS | Jul 12, 2024 | KRAUS & LEDERER PARTGMBB | ADMISSIBLE |
| SANDOZ | Jun 20, 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 |
|---|---|
| EXAMINATION | EP1894918 |
| EXAMINATION | IN2371CHENP201 |
| EXAMINATION | US2007078159 |
| EXAMINATION | US2008214604 |
| INTERNATIONAL-SEARCH-REPORT | JPH05194259 |
| INTERNATIONAL-SEARCH-REPORT | WO2006030826 |
| INTERNATIONAL-SEARCH-REPORT | WO2008053602 |
| INTERNATIONAL-SEARCH-REPORT | WO2011021597 |
| OPPOSITION | EP0582396 |
| OPPOSITION | EP1894918 |
| OPPOSITION | EP2821066 |
| OPPOSITION | IN2371CHENP2012 |
| OPPOSITION | JP2009263298 |
| OPPOSITION | JPH05194259 |
| OPPOSITION | US2006198885 |
| OPPOSITION | US2007078159 |
| OPPOSITION | US2007292515 |
| OPPOSITION | US2008214604 |
| OPPOSITION | US2012077842 |
| OPPOSITION | US2012077852 |
| OPPOSITION | US2013237565 |
| OPPOSITION | US4656027 |
| OPPOSITION | US5633006 |
| OPPOSITION | WO03077842 |
| OPPOSITION | WO2004096214 |
| OPPOSITION | WO2006030826 |
| OPPOSITION | WO2008053602 |
| OPPOSITION | WO2011021597 |
| OPPOSITION | WO2012029913 |
| OTHER | US2008214604 |
| OTHER | US2012077842 |
| SEARCH | US2012077842 |
| SEARCH | US2013237565 |
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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(Electronic) Receipt
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Filing of the translations of the claims
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Sep 14, 2023
French translation of claims
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German translation of the claims
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Sep 14, 2023
Letter accompanying subsequently filed items
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Intention to grant (signatures)
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May 24, 2023
Text intended for grant (clean copy)
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May 24, 2023
Feb 17, 2023
(Electronic) Receipt
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Feb 17, 2023
Amended claims with annotations
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Feb 17, 2023
Claims
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Feb 17, 2023
Letter accompanying subsequently filed items
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Feb 17, 2023
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Intention to grant (signatures)
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Oct 10, 2022
Text intended for grant (clean copy)
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Oct 10, 2022
Aug 18, 2022
(Electronic) Receipt
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Aug 18, 2022
Amended claims with annotations
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Aug 18, 2022
Claims
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Aug 18, 2022
Letter accompanying subsequently filed items
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Aug 18, 2022
Apr 12, 2022
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Intention to grant (signatures)
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Apr 12, 2022
Text intended for grant (clean copy)
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Apr 12, 2022
Oct 25, 2021
Oct 25, 2021
Oct 20, 2021
(Electronic) Receipt
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Oct 20, 2021
Letter accompanying subsequently filed items
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Oct 20, 2021
Non-patent literature filed by a third party
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Oct 20, 2021
Non-patent literature filed by a third party
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Oct 20, 2021
Non-patent literature filed by a third party
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Oct 20, 2021
Observations by third parties
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Oct 20, 2021
Patent document filed by a Third party
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Oct 20, 2021
Patent document filed by a Third party
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Sep 6, 2021
(Electronic) Receipt
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Sep 6, 2021
Amended claims with annotations
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Sep 6, 2021
Amended description with annotations
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Sep 6, 2021
Claims
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Sep 6, 2021
Description
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Sep 6, 2021
Letter accompanying subsequently filed items
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Sep 6, 2021
May 14, 2021
Annex to the communication
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May 14, 2021
Communication from the Examining Division
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Jul 16, 2020
(Electronic) Receipt
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Jul 16, 2020
Amended claims with annotations
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Jul 16, 2020
Claims
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Jul 16, 2020
Letter accompanying subsequently filed items
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Jul 16, 2020
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Mar 19, 2020
Annex to a communication
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Mar 19, 2020
Annex to the communication
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Mar 19, 2020
Communication from the Examining Division
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Nov 4, 2019
Oct 23, 2019
Observations by third parties
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Oct 23, 2019
Patent document filed by a Third party
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Oct 23, 2019
Patent document filed by a Third party
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Mar 11, 2019
Examination started
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Feb 7, 2019
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Feb 7, 2019
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Amended claims with annotations
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Feb 7, 2019
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Feb 7, 2019
Letter accompanying subsequently filed items
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Aug 17, 2018
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European search opinion
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Jul 30, 2018
Information on Search Strategy
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Jul 30, 2018
Supplementary European search report
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Dec 6, 2017
Notification of forthcoming publication
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Oct 4, 2017
Sep 29, 2017
Communication to designated inventor
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Sep 29, 2017
Communication to designated inventor
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Communication to designated inventor
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Sep 29, 2017
Communication to designated inventor
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Sep 12, 2017
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(Electronic) Receipt
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Aug 11, 2017
Abstract
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Aug 11, 2017
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Claims
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Aug 11, 2017
Description
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Aug 11, 2017
Drawings
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Aug 11, 2017
Request for entry into the European phase
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Jul 5, 2017
Information on entry into European phase
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Sep 19, 2016
Sep 1, 2016
Copy of the international search report
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Sep 1, 2016
Sep 1, 2016
International publication pamphlet
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