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The patent EP3378486 was granted to Chugai Seiyaku Kabushiki Kaisha on Mar 3, 2021. The application was filed on Jan 20, 2011 under application number EP18155113A. The patent is currently recorded with a legal status of "Revoked".

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 |
|---|---|---|---|
| DR H ULRICH DORRIES | Dec 3, 2021 | DORRIES | ADMISSIBLE |
| DR H ULRICH DORRIES | Dec 3, 2021 | DORRIES, HANS ULRICH , DF-MP DORRIES FRANK-MOLNIA & POHLMAN | ADMISSIBLE |
| ELKINGTON AND FIFE | Dec 3, 2021 | ELKINGTON AND FIFE | ADMISSIBLE |
| WOHLFAHRT | Dec 3, 2021 | WOHLFAHRT | ADMISSIBLE |
| STRAWMAN | Dec 1, 2021 | PLASSERAUD | ADMISSIBLE |
| JAMES POOLE | Nov 23, 2021 | CARPMAELS & RANSFORD | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | WO2005US37471 |
| DESCRIPTION | EP0239400 |
| DESCRIPTION | JPH0159878B |
| DESCRIPTION | WO0166737 |
| DESCRIPTION | WO0233072 |
| DESCRIPTION | WO2005005636 |
| DESCRIPTION | WO2006006693 |
| DESCRIPTION | WO2006044908 |
| DESCRIPTION | WO2006065746 |
| DESCRIPTION | WO2007114319 |
| DESCRIPTION | WO2008071394 |
| DESCRIPTION | WO2008121615 |
| DESCRIPTION | WO2009041613 |
| DESCRIPTION | WO2009041621 |
| DESCRIPTION | WO2009072604 |
| DESCRIPTION | WO2009141239 |
| DESCRIPTION | WO9201047 |
| DESCRIPTION | WO9203918 |
| DESCRIPTION | WO9219759 |
| DESCRIPTION | WO9220791 |
| DESCRIPTION | WO9306213 |
| DESCRIPTION | WO9311236 |
| DESCRIPTION | WO9312227 |
| DESCRIPTION | WO9319172 |
| DESCRIPTION | WO9402602 |
| DESCRIPTION | WO9425585 |
| DESCRIPTION | WO9501438 |
| DESCRIPTION | WO9515388 |
| DESCRIPTION | WO9602576 |
| DESCRIPTION | WO9633735 |
| DESCRIPTION | WO9634096 |
| DESCRIPTION | WO9704801 |
| DESCRIPTION | WO9813388 |
| DESCRIPTION | WO9814580 |
| DESCRIPTION | WO9951743 |
| OPPOSITION | EP1712240 |
| OPPOSITION | US2005074821 |
| OPPOSITION | US2007184050 |
| OPPOSITION | US2007212346 |
| OPPOSITION | WO2004055164 |
| OPPOSITION | WO2004091658 |
| OPPOSITION | WO2006065746 |
| OPPOSITION | WO2007092772 |
| OPPOSITION | WO2008079290 |
| OPPOSITION | WO2008086395 |
| OPPOSITION | WO2008121615 |
| OPPOSITION | WO2008132439 |
| OPPOSITION | WO2009006301 |
| SEARCH | US2004197324 |
| SEARCH | WO2004055164 |
| SEARCH | WO2008079290 |
| SEARCH | WO2009086400 |
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
Search/Exam
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(Electronic) Receipt
Search/Exam
Jan 4, 2021
Filing of the translations of the claims
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Jan 4, 2021
French translation of claims
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Jan 4, 2021
German translation of the claims
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Aug 25, 2020
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Intention to grant (signatures)
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Aug 25, 2020
Text intended for grant (clean copy)
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Aug 25, 2020
Text intended for grant (sequence listing)
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Aug 25, 2020
Jul 28, 2020
Examination started
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Jun 4, 2019
(Electronic) Receipt
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Jun 4, 2019
Jun 4, 2019
Amended claims with annotations
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Jun 4, 2019
Amendments received before examination
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Jun 4, 2019
Letter accompanying subsequently filed items
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Dec 28, 2018
Submission concerning representation
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Dec 21, 2018
Submission concerning representation
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Dec 12, 2018
Refund of fees
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Dec 10, 2018
Nov 6, 2018
Nov 6, 2018
European search opinion
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Nov 6, 2018
European search report
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Nov 6, 2018
Information on Search Strategy
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Aug 29, 2018
Notification of forthcoming publication
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Jul 20, 2018
Jul 20, 2018
Information on Search Strategy
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Jul 20, 2018
Partial European search report
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Jul 20, 2018
Jul 9, 2018
Search started
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May 30, 2018
Refund of fees
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May 23, 2018
Communication to designated inventor
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May 23, 2018
Communication to designated inventor
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May 16, 2018
(Electronic) Receipt
Search/Exam
May 16, 2018
Designation of inventor
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May 16, 2018
Letter accompanying subsequently filed items
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May 3, 2018
(Electronic) Receipt
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May 3, 2018
Designation of inventor
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May 3, 2018
Letter accompanying subsequently filed items
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May 3, 2018
Letter concerning the inventor
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May 2, 2018
(Electronic) Receipt
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May 2, 2018
Claims
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May 2, 2018
Letter accompanying subsequently filed items
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May 2, 2018
Matter concerning the application
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Mar 5, 2018
(Electronic) Receipt
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Mar 5, 2018
Letter accompanying subsequently filed items
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Feb 28, 2018
Deficiency in designation of inventor
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Feb 28, 2018
Invitation to file claims
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Feb 5, 2018
Abstract
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Feb 5, 2018
Feb 5, 2018
Converted Sequence Listing
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Feb 5, 2018
Description
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Feb 5, 2018
Drawings
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Feb 5, 2018
Request for grant of a European patent
Search/Exam
Aug 16, 2011