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The patent EP3141558 was granted to Merck Patent on Feb 16, 2022. The application was filed on Sep 8, 2016 under application number EP16187838A. The patent is currently recorded with a legal status of "Patent Maintained As Amended".

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 |
|---|---|---|---|
| KIPA | Feb 24, 2020 | KIPA | ADMISSIBLE |
| CABINET LAURENT & CHARRAS | Feb 20, 2020 | - | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | WO2015001277 |
| OPPOSITION | FR1554084 |
| OPPOSITION | US2015133636 |
| OPPOSITION | US8153382 |
| OPPOSITION | WO2007077365 |
| OPPOSITION | WO2013062479 |
| OPPOSITION | WO2015001277 |
| OPPOSITION | WO2016177966 |
| OPPOSITION | WO9513861 |
| SEARCH | FR3008097 |
| SEARCH | FR3008098 |
| SEARCH | WO0127623 |
| SEARCH | WO2013062479 |
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
Search/Exam
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Advice of delivery
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Letter accompanying subsequently filed items
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Decision to grant a European patent
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Apr 11, 2019
(Electronic) Receipt
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Apr 11, 2019
Filing of the translations of the claims
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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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(Electronic) Receipt
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Amended claims with annotations
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Sep 5, 2018
Claims
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Letter accompanying subsequently filed items
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Annex to the communication
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May 24, 2018
Communication from the Examining Division
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May 16, 2018
Examination started
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Nov 7, 2017
Decision to allow further processing
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Oct 24, 2017
(Electronic) Receipt
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Amended claims with annotations
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Letter accompanying subsequently filed items
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Oct 24, 2017
Request for further processing
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Sep 15, 2017
(Electronic) Receipt
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Sep 15, 2017
Letter concerning fees and payments
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Mar 20, 2017
Feb 15, 2017
Notification of forthcoming publication
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European search opinion
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Jan 31, 2017
European search report
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Jan 31, 2017
Information on Search Strategy
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Jan 18, 2017
Search started
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Nov 23, 2016
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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Communication to designated inventor
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Abstract
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Claims
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Sep 8, 2016
Description
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Sep 8, 2016
Designation of inventor
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Drawings
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Sep 8, 2016
Request for grant of a European patent
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