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The patent EP3661562 was granted to Amgen on Oct 2, 2024. The application was originally filed on Aug 3, 2018 under application number EP18759787A. 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.
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | EP0367566 |
| DESCRIPTION | EP0460846 |
| DESCRIPTION | EP0546073 |
| DESCRIPTION | US2003069395 |
| DESCRIPTION | US2003191056 |
| DESCRIPTION | US2003195154 |
| DESCRIPTION | US2005054051 |
| DESCRIPTION | US4399216 |
| DESCRIPTION | US4740461 |
| DESCRIPTION | US4816567 |
| DESCRIPTION | US4912040 |
| DESCRIPTION | US4946778 |
| DESCRIPTION | US4959455 |
| DESCRIPTION | US4965195 |
| DESCRIPTION | US4968607 |
| DESCRIPTION | US5011912 |
| DESCRIPTION | US5260203 |
| DESCRIPTION | US5292658 |
| DESCRIPTION | US5418155 |
| DESCRIPTION | US5530101 |
| DESCRIPTION | US5545806 |
| DESCRIPTION | US5545807 |
| DESCRIPTION | US5569825 |
| DESCRIPTION | US5585089 |
| DESCRIPTION | US5625126 |
| DESCRIPTION | US5633425 |
| DESCRIPTION | US5661016 |
| DESCRIPTION | US5683888 |
| DESCRIPTION | US5693761 |
| DESCRIPTION | US5693762 |
| DESCRIPTION | US5714142 |
| DESCRIPTION | US5741668 |
| DESCRIPTION | US5770429 |
| DESCRIPTION | US5777079 |
| DESCRIPTION | US5789650 |
| DESCRIPTION | US5804387 |
| DESCRIPTION | US5814318 |
| DESCRIPTION | US5874299 |
| DESCRIPTION | US5874304 |
| DESCRIPTION | US5876995 |
| DESCRIPTION | US5877397 |
| DESCRIPTION | US5925558 |
| DESCRIPTION | US6162963 |
| DESCRIPTION | US6180370 |
| DESCRIPTION | US6255458 |
| DESCRIPTION | US6270964 |
| DESCRIPTION | US6300129 |
| DESCRIPTION | US6342225 |
| DESCRIPTION | US6660843 |
| DESCRIPTION | US6673986 |
| DESCRIPTION | US6713610 |
| DESCRIPTION | US6887470 |
| DESCRIPTION | US6926898 |
| DESCRIPTION | WO8801649 |
| DESCRIPTION | WO9004036P |
| DESCRIPTION | WO9110741 |
| DESCRIPTION | WO9203918 |
| DESCRIPTION | WO9215673 |
| DESCRIPTION | WO9222646 |
| DESCRIPTION | WO931227 |
| DESCRIPTION | WO9402602 |
| DESCRIPTION | WO9507463 |
| DESCRIPTION | WO9633735 |
| DESCRIPTION | WO9814605 |
| DESCRIPTION | WO9824893 |
| DESCRIPTION | WO9826277 |
| DESCRIPTION | WO9910494 |
| DESCRIPTION | WO9949019 |
| EXAMINATION | WO2015086853 |
| EXAMINATION | WO2017025897 |
| EXAMINATION | WO2017055582 |
| INTERNATIONAL-SEARCH-REPORT | WO2005084390 |
| INTERNATIONAL-SEARCH-REPORT | WO2009012256 |
| INTERNATIONAL-SEARCH-REPORT | WO2015123265 |
| INTERNATIONAL-SEARCH-REPORT | WO2016067013 |
| INTERNATIONAL-SEARCH-REPORT | WO2017137628 |
| INTERNATIONAL-SEARCH-REPORT | WO2018136440 |
| OPPOSITION | WO2005084390 |
| OPPOSITION | WO2006134173 |
| OPPOSITION | WO2006134174 |
| OPPOSITION | WO2009012256 |
| OPPOSITION | WO2012010516 |
| OPPOSITION | WO2015086853 |
| OPPOSITION | WO2016067013 |
| OPPOSITION | WO2017055582 |
| OPPOSITION | WO2017137628 |
| OPPOSITION | WO2018039647 |
| OPPOSITION | WO2018136440 |
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.
Date
Description
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Sep 10, 2025
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Oct 15, 2024
Sep 5, 2024
Decision to grant a European patent
Search/Exam
Aug 21, 2024
(Electronic) Receipt
Search/Exam
Aug 21, 2024
Filing of the translations of the claims
Search/Exam
Aug 21, 2024
French translation of claims
Search/Exam
Aug 21, 2024
German translation of the claims
Search/Exam
Apr 29, 2024
Apr 29, 2024
Apr 29, 2024
Apr 29, 2024
Intention to grant (signatures)
Search/Exam
Apr 29, 2024
Text intended for grant (clean copy)
Search/Exam
Apr 29, 2024
Nov 16, 2023
(Electronic) Receipt
Search/Exam
Nov 16, 2023
Amended description with annotations
Search/Exam
Nov 16, 2023
Description
Search/Exam
Nov 16, 2023
Letter accompanying subsequently filed items
Search/Exam
Nov 16, 2023
Sep 7, 2023
Annex to the communication
Search/Exam
Sep 7, 2023
Communication from the Examining Division
Search/Exam
Dec 6, 2021
(Electronic) Receipt
Search/Exam
Dec 6, 2021
Amended claims with annotations
Search/Exam
Dec 6, 2021
Claims
Search/Exam
Dec 6, 2021
Letter accompanying subsequently filed items
Search/Exam
Dec 6, 2021
Oct 7, 2021
Oct 4, 2021
(Electronic) Receipt
Search/Exam
Oct 4, 2021
Letter accompanying subsequently filed items
Search/Exam
Oct 4, 2021
May 25, 2021
Annex to the communication
Search/Exam
May 25, 2021
Communication from the Examining Division
Search/Exam
May 18, 2021
Examination started
Search/Exam
Sep 22, 2020
(Electronic) Receipt
Search/Exam
Sep 22, 2020
Sep 22, 2020
Amended claims with annotations
Search/Exam
Sep 22, 2020
Amendments received before examination
Search/Exam
Sep 22, 2020
Letter accompanying subsequently filed items
Search/Exam
Jul 14, 2020
Jul 8, 2020
Letter which had not been notified
Search/Exam
May 13, 2020
Mar 12, 2020
Mar 12, 2020
Mar 9, 2020
Mar 9, 2020
Mar 9, 2020
Communication to designated inventor
Search/Exam
Mar 9, 2020
Communication to designated inventor
Search/Exam
Mar 9, 2020
Communication to designated inventor
Search/Exam
Mar 9, 2020
Communication to designated inventor
Search/Exam
Mar 9, 2020
Communication to designated inventor
Search/Exam
Mar 3, 2020
(Electronic) Receipt
Search/Exam
Mar 3, 2020
Letter accompanying subsequently filed items
Search/Exam
Mar 3, 2020
Feb 21, 2020
Jan 30, 2020
(Electronic) Receipt
Search/Exam
Jan 30, 2020
Annex
Search/Exam
Jan 30, 2020
Request for entry into the European phase
Search/Exam
Jan 30, 2020
Submission concerning representation
Search/Exam
Dec 13, 2019
Information on entry into European phase
Search/Exam
Feb 27, 2019
Feb 7, 2019
Converted Sequence Listing
Search/Exam
Feb 7, 2019
Copy of the international search report
Search/Exam
Feb 7, 2019
Published international application - A1
Search/Exam
Dec 11, 2018
Dec 11, 2018
Dec 11, 2018
Oct 19, 2018
Oct 19, 2018
Sep 11, 2018
Sep 11, 2018
Aug 24, 2018
Abstract
PCTISA
Aug 24, 2018
Annex
PCTISA
Aug 24, 2018
Claims
PCTISA
Aug 24, 2018
Description
PCTISA
Aug 24, 2018
Drawings
PCTISA
Aug 24, 2018
Aug 24, 2018
Aug 24, 2018
Aug 24, 2018
Aug 24, 2018
Aug 24, 2018