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The patent EP3320773 was granted to Chugai Seiyaku Kabushiki Kaisha on Oct 11, 2023. The application was filed on Jul 8, 2016 under application number EP16824403A. 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 |
|---|---|---|---|
| STRAWMAN | Feb 8, 2024 | HOFFMANN EITLE | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| OPPOSITION | US2007209083 |
| OPPOSITION | WO03006639 |
| OPPOSITION | WO2012143524 |
| OPPOSITION | WO2015095392 |
| OPPOSITION | WO2016085889 |
| SEARCH | WO03006639 |
| SEARCH | WO2012143524 |
| SEARCH | WO2015095392 |
| SEARCH | WO2016085889 |
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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(Electronic) Receipt
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Aug 16, 2023
Letter accompanying subsequently filed items
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Aug 16, 2023
Request for correction of the publication
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Aug 3, 2023
May 24, 2023
Apr 14, 2023
Decision to grant a European patent
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Mar 24, 2023
(Electronic) Receipt
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Mar 24, 2023
Filing of the translations of the claims
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Mar 24, 2023
French translation of claims
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Mar 24, 2023
German translation of the claims
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Mar 24, 2023
Letter accompanying subsequently filed items
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Nov 23, 2022
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Intention to grant (signatures)
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Nov 23, 2022
Text intended for grant (clean copy)
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Nov 23, 2022
Jun 3, 2022
(Electronic) Receipt
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Jun 3, 2022
Amended claims with annotations
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Jun 3, 2022
Amended description with annotations
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Jun 3, 2022
Claims
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Jun 3, 2022
Description
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Jun 3, 2022
Letter accompanying subsequently filed items
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Jun 3, 2022
Apr 8, 2022
Apr 5, 2022
(Electronic) Receipt
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Apr 5, 2022
Letter accompanying subsequently filed items
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Apr 5, 2022
Nov 26, 2021
Annex to the communication
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Nov 26, 2021
Communication from the Examining Division
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Jul 22, 2021
(Electronic) Receipt
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Jul 22, 2021
Amended claims with annotations
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Jul 22, 2021
Claims
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Jul 22, 2021
Letter accompanying subsequently filed items
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Jul 22, 2021
May 26, 2021
May 20, 2021
(Electronic) Receipt
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May 20, 2021
Letter accompanying subsequently filed items
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May 20, 2021
Jan 12, 2021
Annex to the communication
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Jan 12, 2021
Communication from the Examining Division
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Sep 23, 2020
(Electronic) Receipt
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Sep 23, 2020
Amended claims with annotations
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Sep 23, 2020
Claims
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Sep 23, 2020
Letter accompanying subsequently filed items
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Sep 23, 2020
Aug 20, 2020
Aug 17, 2020
(Electronic) Receipt
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Aug 17, 2020
Letter accompanying subsequently filed items
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Aug 17, 2020
Apr 7, 2020
Annex to the communication
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Apr 7, 2020
Communication from the Examining Division
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Sep 10, 2019
(Electronic) Receipt
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Sep 10, 2019
Sep 10, 2019
Amended claims with annotations
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Sep 10, 2019
Amendments received before examination
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Sep 10, 2019
Letter accompanying subsequently filed items
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Sep 10, 2019
Translation of priority document
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Sep 10, 2019
Translation of priority document
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Mar 1, 2019
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Feb 12, 2019
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European search opinion
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Feb 12, 2019
Information on Search Strategy
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Feb 12, 2019
Supplementary European search report
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Sep 10, 2018
Sep 10, 2018
Amended claims with annotations
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Sep 10, 2018
Amendments received before examination
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Apr 18, 2018
Notification of forthcoming publication
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Mar 2, 2018
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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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Feb 19, 2018
Notice on debiting of fees
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Jan 30, 2018
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(Electronic) Receipt
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Jan 23, 2018
Abstract
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Jan 23, 2018
Claims
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Jan 23, 2018
Converted Sequence Listing
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Jan 23, 2018
Description
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Description
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Description
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Jan 23, 2018
Drawings
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Jan 23, 2018
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Request for entry into the European phase
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Jan 12, 2018
Citation filed by a third party
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Jan 12, 2018
Observations by third parties
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Nov 24, 2017
Information on entry into European phase
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Feb 7, 2017
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Jan 19, 2017
Converted Sequence Listing
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Jan 19, 2017
Copy of the international search report
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Jan 19, 2017
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International publication pamphlet
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