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The patent EP3638243 was granted to Celgene on Aug 7, 2024. The application was originally filed on Jun 13, 2018 under application number EP18816685A. 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 |
|---|---|---|---|
| MAIWALD | May 7, 2025 | MAIWALD | ADMISSIBLE |
| WUESTHOFF & WUESTHOFF PATENTANWALTE PARTG MBB | May 5, 2025 | WICHMANN | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | US5096815 |
| DESCRIPTION | US5198346 |
| DESCRIPTION | US5223409 |
| DESCRIPTION | WO2011020045 |
| DESCRIPTION | WO2013059347 |
| DESCRIPTION | WO2016090077 |
| INTERNATIONAL-SEARCH-REPORT | US2013243743 |
| INTERNATIONAL-SEARCH-REPORT | US2017037100 |
| INTERNATIONAL-SEARCH-REPORT | WO2016183280 |
| INTERNATIONAL-SEARCH-REPORT | WO2017091706 |
| OPPOSITION | EP3490582 |
| OPPOSITION | EP3520805 |
| OPPOSITION | US2010028332 |
| OPPOSITION | WO2013059347 |
| OPPOSITION | WO2015143403 |
| OPPOSITION | WO2015192111 |
| OPPOSITION | WO2018022762 |
| SEARCH | WO2018022762 |
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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Letter accompanying subsequently filed items
Search/Exam
Apr 25, 2025
Submission concerning representation
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Aug 21, 2024
Jul 11, 2024
Decision to grant a European patent
Search/Exam
Jul 2, 2024
Jun 26, 2024
(Electronic) Receipt
Search/Exam
Jun 26, 2024
Filing of the translations of the claims
Search/Exam
Jun 26, 2024
French translation of claims
Search/Exam
Jun 26, 2024
German translation of the claims
Search/Exam
Jun 26, 2024
Letter accompanying subsequently filed items
Search/Exam
Mar 4, 2024
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Intention to grant (signatures)
Search/Exam
Feb 27, 2024
Text intended for grant (clean copy)
Search/Exam
Feb 27, 2024
Feb 19, 2024
Oct 19, 2023
(Electronic) Receipt
Search/Exam
Oct 19, 2023
Description
Search/Exam
Oct 19, 2023
Letter accompanying subsequently filed items
Search/Exam
Oct 19, 2023
Jun 27, 2023
Annex to the communication
Search/Exam
Jun 27, 2023
Communication from the Examining Division
Search/Exam
May 24, 2023
(Electronic) Receipt
Search/Exam
May 24, 2023
Amended claims with annotations
Search/Exam
May 24, 2023
Claims
Search/Exam
May 24, 2023
Letter accompanying subsequently filed items
Search/Exam
May 24, 2023
Jan 19, 2023
Annex to the communication
Search/Exam
Jan 19, 2023
Communication from the Examining Division
Search/Exam
Nov 8, 2022
Decision to allow further processing
Search/Exam
Oct 28, 2022
(Electronic) Receipt
Search/Exam
Oct 28, 2022
Amended claims with annotations
Search/Exam
Oct 28, 2022
Claims
Search/Exam
Oct 28, 2022
Letter accompanying subsequently filed items
Search/Exam
Oct 28, 2022
Oct 28, 2022
Request for further processing
Search/Exam
Aug 19, 2022
May 25, 2022
May 20, 2022
(Electronic) Receipt
Search/Exam
May 20, 2022
Letter accompanying subsequently filed items
Search/Exam
Jan 18, 2022
Annex to the communication
Search/Exam
Jan 18, 2022
Communication from the Examining Division
Search/Exam
Jan 13, 2022
Examination started
Search/Exam
Sep 13, 2021
(Electronic) Receipt
Search/Exam
Sep 13, 2021
Sep 13, 2021
Amended claims with annotations
Search/Exam
Sep 13, 2021
Amendments received before examination
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Sep 13, 2021
Letter accompanying subsequently filed items
Search/Exam
Sep 13, 2021
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Jun 28, 2021
Payment submission rejected
Search/Exam
Mar 2, 2021
Feb 11, 2021
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European search opinion
Search/Exam
Feb 11, 2021
Information on Search Strategy
Search/Exam
Feb 11, 2021
Supplementary European search report
Search/Exam
Feb 1, 2021
Search started
Search/Exam
Aug 10, 2020
(Electronic) Receipt
Search/Exam
Aug 10, 2020
Aug 10, 2020
Amended claims with annotations
Search/Exam
Aug 10, 2020
Amendments received before examination
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Aug 10, 2020
Letter accompanying subsequently filed items
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Jun 29, 2020
Payment submission rejected
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May 8, 2020
(Electronic) Receipt
Search/Exam
May 8, 2020
Letter accompanying subsequently filed items
Search/Exam
Mar 25, 2020
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Communication to designated inventor
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Jan 17, 2020
Communication to designated inventor
Search/Exam
Jan 3, 2020
Dec 13, 2019
(Electronic) Receipt
Search/Exam
Dec 13, 2019
Request for entry into the European phase
Search/Exam
Oct 25, 2019
Information on entry into European phase
Search/Exam
Jan 10, 2019
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Dec 20, 2018
Converted Sequence Listing
Search/Exam
Dec 20, 2018
Converted Sequence Listing
Search/Exam
Dec 20, 2018
Copy of the international search report
Search/Exam
Dec 20, 2018
Published international application - A1
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