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The patent EP3973987 was granted to Regeneron Pharmaceuticals on Jan 10, 2024. The application was filed on Feb 20, 2015 under application number EP21191120A. 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 |
|---|---|---|---|
| BOULT WADE TENNANT | Oct 10, 2024 | BOULT WADE TENNANT | ADMISSIBLE |
| HAMPTON KNOWLES | Oct 10, 2024 | D YOUNG | ADMISSIBLE |
| LUIGI | Oct 10, 2024 | TER MEER STEINMEISTER & PARTNER | ADMISSIBLE |
| MICHALSKI HUTTERAMNN & PARTNER PATENTANWALTE MBB | Oct 10, 2024 | - | ADMISSIBLE |
| MICHALSKI HUTTERMANN & PARTNER PATENTANWALTE MBB | Oct 10, 2024 | - | ADMISSIBLE |
| SECERNA | Oct 9, 2024 | SECERNA | ADMISSIBLE |
| DR H ULRICH DORRIES | Oct 1, 2024 | DORRIES | ADMISSIBLE |
| DR H ULRICH DORRIES | Oct 1, 2024 | DORRIES, HANS ULRICH , DF-MP DORRIES FRANK-MOLNIA & POHLMAN | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | US2012097565 |
| DESCRIPTION | US6596541 |
| DESCRIPTION | US6927044 |
| DESCRIPTION | US7582298 |
| DESCRIPTION | US8178098 |
| OPPOSITION | EP3470432 |
| OPPOSITION | EP3973987 |
| OPPOSITION | US2003185821 |
| OPPOSITION | US8075887 |
| OPPOSITION | WO2014031610 |
| OPPOSITION | WO2015127229 |
| OPPOSITION | WO2022076289 |
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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Jan 23, 2024
Dec 14, 2023
Decision to grant a European patent
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Nov 29, 2023
(Electronic) Receipt
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Nov 29, 2023
Filing of the translations of the claims
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Nov 29, 2023
French translation of claims
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Nov 29, 2023
German translation of the claims
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Nov 16, 2023
Nov 9, 2023
(Electronic) Receipt
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Nov 9, 2023
Letter accompanying subsequently filed items
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Nov 9, 2023
Oct 6, 2023
Oct 6, 2023
Oct 6, 2023
Oct 6, 2023
Intention to grant (signatures)
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Oct 6, 2023
Text intended for grant (clean copy)
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Oct 6, 2023
Jul 3, 2023
(Electronic) Receipt
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Jul 3, 2023
Amended description with annotations
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Jul 3, 2023
Description
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Jul 3, 2023
Letter accompanying subsequently filed items
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Jul 3, 2023
Mar 9, 2023
Annex to the communication
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Mar 9, 2023
Communication from the Examining Division
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Mar 3, 2023
Examination started
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Jan 9, 2023
Decision to allow further processing
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Jan 3, 2023
(Electronic) Receipt
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Jan 3, 2023
Jan 3, 2023
Amended claims with annotations
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Jan 3, 2023
Letter accompanying subsequently filed items
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Jan 3, 2023
Jan 3, 2023
Request for further processing
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Oct 25, 2022
Sep 19, 2022
(Electronic) Receipt
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Sep 19, 2022
Letter concerning fees and payments
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Apr 4, 2022
Mar 7, 2022
Refund of fees
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Mar 2, 2022
Mar 2, 2022
European search opinion
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Mar 2, 2022
European search report
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Mar 2, 2022
Information on Search Strategy
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Mar 2, 2022
Notification of forthcoming publication
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Feb 16, 2022
Search started
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Feb 11, 2022
Feb 3, 2022
(Electronic) Receipt
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Feb 3, 2022
Nov 24, 2021
(Electronic) Receipt
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Nov 24, 2021
Letter concerning fees and payments
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Nov 11, 2021
(Electronic) Receipt
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Nov 11, 2021
Claims
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Nov 11, 2021
Letter accompanying subsequently filed items
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Nov 11, 2021
Matter concerning the application
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Sep 15, 2021
Invitation to file claims
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Sep 1, 2021
(Electronic) Receipt
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Sep 1, 2021
Letter concerning fees and payments
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Aug 12, 2021
Abstract
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Aug 12, 2021
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Converted Sequence Listing
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Aug 12, 2021
Description
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Aug 12, 2021
Designation of inventor
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Aug 12, 2021
Drawings
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Aug 12, 2021
Request for grant of a European patent
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Sep 16, 2015
Sep 16, 2015
Sep 16, 2015
Aug 27, 2015
Converted Sequence Listing
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