The weekly litigation news digest is live. Subscribe now
The patent EP3703818 was granted to Regeneron Pharmaceuticals on Nov 1, 2023. The application was filed on Oct 29, 2018 under application number EP18799655A. 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 |
|---|---|---|---|
| DR H ULRICH DORRIES | Aug 1, 2024 | DORRIES | ADMISSIBLE |
| DR H ULRICH DORRIES | Aug 1, 2024 | DORRIES, HANS ULRICH , DF-MP DORRIES FRANK-MOLNIA & POHLMAN | ADMISSIBLE |
| LUIGI | Aug 1, 2024 | TER MEER STEINMEISTER & PARTNER | ADMISSIBLE |
| MICHALSKI HUTTERAMNN & PARTNER PATENTANWALTE MBB | Aug 1, 2024 | - | ADMISSIBLE |
| HAMPTON KNOWLES | Jul 31, 2024 | D YOUNG | ADMISSIBLE |
| BOEHMERT & BOEHMERT ANWALTSPARTNERSCHAFT MBB | Jul 30, 2024 | ENGELHARD | ADMISSIBLE |
| BOULT WADE TENNANT | Jul 30, 2024 | BOULT WADE TENNANT | ADMISSIBLE |
| LANYON OPPOSITIONS | Jul 30, 2024 | PINSENT MASONS | 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 |
| INTERNATIONAL-SEARCH-REPORT | WO2015127229 |
| INTERNATIONAL-SEARCH-REPORT | WO2016077675 |
| OPPOSITION | WO2014031610 |
| OPPOSITION | WO2015127229 |
| OPPOSITION | WO2019089473 |
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
Get instant alerts for new documents
Dec 23, 2025
Dec 23, 2025
Dec 23, 2025
Dec 22, 2025
Dec 22, 2025
Dec 22, 2025
Dec 22, 2025
Dec 22, 2025
Dec 22, 2025
Dec 22, 2025
Dec 22, 2025
Dec 22, 2025
Dec 22, 2025
Dec 22, 2025
Dec 22, 2025
Dec 22, 2025
Dec 22, 2025
Dec 22, 2025
Dec 22, 2025
Dec 22, 2025
Dec 22, 2025
Dec 22, 2025
Dec 22, 2025
Dec 19, 2025
Dec 19, 2025
Dec 19, 2025
Dec 19, 2025
Dec 19, 2025
Dec 19, 2025
Dec 19, 2025
Dec 18, 2025
Dec 18, 2025
Dec 18, 2025
Dec 18, 2025
Apr 3, 2025
Apr 3, 2025
Apr 3, 2025
Apr 3, 2025
Apr 3, 2025
Apr 3, 2025
Apr 3, 2025
Apr 3, 2025
Apr 3, 2025
Apr 3, 2025
Apr 3, 2025
Mar 31, 2025
Mar 28, 2025
Mar 28, 2025
Mar 28, 2025
Mar 28, 2025
Mar 28, 2025
Mar 28, 2025
Mar 28, 2025
Mar 28, 2025
Mar 26, 2025
Mar 26, 2025
Mar 26, 2025
Mar 26, 2025
Mar 26, 2025
Mar 26, 2025
Mar 26, 2025
Mar 26, 2025
Mar 21, 2025
Mar 21, 2025
Mar 21, 2025
Mar 21, 2025
Mar 21, 2025
Mar 21, 2025
Mar 21, 2025
Mar 21, 2025
Mar 21, 2025
Mar 21, 2025
Mar 21, 2025
Mar 21, 2025
Mar 21, 2025
Mar 21, 2025
Mar 21, 2025
Mar 21, 2025
Mar 21, 2025
Mar 21, 2025
Mar 21, 2025
Feb 19, 2025
Feb 19, 2025
Feb 19, 2025
Feb 19, 2025
Feb 19, 2025
Feb 19, 2025
Feb 19, 2025
Feb 13, 2025
Feb 13, 2025
Feb 13, 2025
Feb 13, 2025
Feb 13, 2025
Feb 13, 2025
Feb 13, 2025
Feb 13, 2025
Feb 13, 2025
Feb 13, 2025
Feb 13, 2025
Feb 13, 2025
Feb 13, 2025
Feb 13, 2025
Feb 13, 2025
Feb 13, 2025
Feb 13, 2025
Feb 13, 2025
Feb 13, 2025
Feb 13, 2025
Feb 13, 2025
Feb 13, 2025
Feb 13, 2025
Feb 13, 2025
Feb 13, 2025
Feb 13, 2025
Feb 13, 2025
Feb 13, 2025
Feb 13, 2025
Feb 13, 2025
Feb 13, 2025
Feb 13, 2025
Feb 13, 2025
Feb 13, 2025
Feb 13, 2025
Feb 13, 2025
Feb 13, 2025
Feb 13, 2025
Feb 13, 2025
Feb 13, 2025
Feb 13, 2025
Feb 13, 2025
Feb 13, 2025
Feb 13, 2025
Feb 13, 2025
Feb 13, 2025
Feb 13, 2025
Feb 13, 2025
Feb 13, 2025
Feb 13, 2025
Feb 13, 2025
Feb 13, 2025
Feb 13, 2025
Feb 13, 2025
Feb 13, 2025
Feb 13, 2025
Feb 13, 2025
Feb 13, 2025
Feb 13, 2025
Feb 13, 2025
Feb 13, 2025
Feb 13, 2025
Feb 13, 2025
Feb 13, 2025
Feb 13, 2025
Feb 13, 2025
Feb 13, 2025
Feb 13, 2025
Drawings
OPPO
Feb 13, 2025
Feb 13, 2025
Feb 13, 2025
Feb 13, 2025
Oct 30, 2024
Oct 30, 2024
Oct 30, 2024
Oct 30, 2024
Oct 30, 2024
Oct 30, 2024
Oct 30, 2024
Oct 30, 2024
Oct 23, 2024
Oct 23, 2024
Oct 23, 2024
Sep 26, 2024
Sep 26, 2024
Sep 26, 2024
Sep 26, 2024
Sep 26, 2024
Sep 26, 2024
Sep 26, 2024
Sep 20, 2024
Sep 20, 2024
Sep 20, 2024
Aug 13, 2024
Aug 13, 2024
Aug 13, 2024
Aug 13, 2024
Aug 13, 2024
Aug 13, 2024
Aug 13, 2024
Aug 13, 2024
Aug 7, 2024
Aug 7, 2024
Aug 7, 2024
Aug 5, 2024
Aug 2, 2024
Aug 1, 2024
Aug 1, 2024
Aug 1, 2024
Aug 1, 2024
Aug 1, 2024
Aug 1, 2024
Aug 1, 2024
Aug 1, 2024
Aug 1, 2024
Aug 1, 2024
Aug 1, 2024
Aug 1, 2024
Aug 1, 2024
Aug 1, 2024
Aug 1, 2024
Aug 1, 2024
Aug 1, 2024
Aug 1, 2024
Aug 1, 2024
Aug 1, 2024
Aug 1, 2024
Aug 1, 2024
Aug 1, 2024
Aug 1, 2024
Aug 1, 2024
Aug 1, 2024
Aug 1, 2024
Aug 1, 2024
Aug 1, 2024
Aug 1, 2024
Aug 1, 2024
Aug 1, 2024
Aug 1, 2024
Aug 1, 2024
Aug 1, 2024
Aug 1, 2024
Aug 1, 2024
Aug 1, 2024
Aug 1, 2024
Aug 1, 2024
Aug 1, 2024
Aug 1, 2024
Aug 1, 2024
Aug 1, 2024
Aug 1, 2024
Aug 1, 2024
Aug 1, 2024
Aug 1, 2024
Aug 1, 2024
Aug 1, 2024
Aug 1, 2024
Aug 1, 2024
Aug 1, 2024
Aug 1, 2024
Aug 1, 2024
Aug 1, 2024
Aug 1, 2024
Aug 1, 2024
Aug 1, 2024
Aug 1, 2024
Aug 1, 2024
Aug 1, 2024
Aug 1, 2024
Aug 1, 2024
Aug 1, 2024
Aug 1, 2024
Aug 1, 2024
Aug 1, 2024
Jul 31, 2024
Jul 31, 2024
Jul 31, 2024
Jul 31, 2024
Jul 31, 2024
Jul 31, 2024
Jul 31, 2024
Jul 31, 2024
Jul 31, 2024
Jul 31, 2024
Jul 31, 2024
Jul 31, 2024
Jul 31, 2024
Jul 31, 2024
Jul 31, 2024
Jul 31, 2024
Jul 31, 2024
Jul 30, 2024
Jul 30, 2024
Jul 30, 2024
Jul 30, 2024
Jul 30, 2024
Jul 30, 2024
Jul 30, 2024
Jul 30, 2024
Jul 30, 2024
Jul 30, 2024
Jul 30, 2024
Jul 30, 2024
Jul 30, 2024
Jul 30, 2024
Jul 30, 2024
Jul 30, 2024
Jul 30, 2024
Jul 30, 2024
Jul 30, 2024
Jul 30, 2024
Jul 30, 2024
Jul 30, 2024
Jul 30, 2024
Jul 30, 2024
Jul 30, 2024
Jul 30, 2024
Jul 30, 2024
Jul 30, 2024
Jul 30, 2024
Jul 30, 2024
Jul 30, 2024
Jul 30, 2024
Jul 30, 2024
Jul 30, 2024
Jul 30, 2024
Jul 30, 2024
Jul 30, 2024
Jul 30, 2024
Jul 30, 2024
Jul 30, 2024
Jul 30, 2024
Jul 30, 2024
Jul 30, 2024
Jul 30, 2024
Jul 30, 2024
Jul 30, 2024
Jul 30, 2024
Jul 30, 2024
Jul 30, 2024
Jul 30, 2024
Jul 30, 2024
Jul 30, 2024
Nov 14, 2023
Oct 6, 2023
Decision to grant a European patent
Search/Exam
Sep 27, 2023
Sep 21, 2023
(Electronic) Receipt
Search/Exam
Sep 21, 2023
Annexes in respect of a client data request
Search/Exam
Sep 21, 2023
Letter accompanying subsequently filed items
Search/Exam
Sep 18, 2023
(Electronic) Receipt
Search/Exam
Sep 18, 2023
French translation of claims
Search/Exam
Sep 18, 2023
German translation of the claims
Search/Exam
Sep 18, 2023
Letter accompanying subsequently filed items
Search/Exam
Aug 23, 2023
Aug 16, 2023
(Electronic) Receipt
Search/Exam
Aug 16, 2023
Jul 10, 2023
Jul 10, 2023
Jul 10, 2023
Jul 10, 2023
Intention to grant (signatures)
Search/Exam
Jul 10, 2023
Text intended for grant (clean copy)
Search/Exam
Jul 10, 2023
Jun 26, 2023
(Electronic) Receipt
Search/Exam
Jun 26, 2023
Amended claims with annotations
Search/Exam
Jun 26, 2023
Amended description with annotations
Search/Exam
Jun 26, 2023
Claims
Search/Exam
Jun 26, 2023
Description
Search/Exam
Jun 26, 2023
Letter accompanying subsequently filed items
Search/Exam
Jun 26, 2023
Feb 16, 2023
Feb 16, 2023
Feb 16, 2023
Feb 16, 2023
Intention to grant (signatures)
Search/Exam
Feb 16, 2023
Text intended for grant (clean copy)
Search/Exam
Feb 16, 2023
Nov 8, 2022
(Electronic) Receipt
Search/Exam
Nov 8, 2022
Amended claims with annotations
Search/Exam
Nov 8, 2022
Amended description with annotations
Search/Exam
Nov 8, 2022
Claims
Search/Exam
Nov 8, 2022
Description
Search/Exam
Nov 8, 2022
Letter accompanying subsequently filed items
Search/Exam
Nov 8, 2022
Jul 6, 2022
Annex to the communication
Search/Exam
Jul 6, 2022
Communication from the Examining Division
Search/Exam
Jul 5, 2022
Annex to the communication
Search/Exam
Jul 5, 2022
Consultation by telephone/in person
Search/Exam
Jul 5, 2022
Jun 13, 2022
Annex to the communication
Search/Exam
Jun 13, 2022
Communication from the Examining Division
Search/Exam
Apr 4, 2022
(Electronic) Receipt
Search/Exam
Apr 4, 2022
Amended claims with annotations
Search/Exam
Apr 4, 2022
Claims
Search/Exam
Apr 4, 2022
Letter accompanying subsequently filed items
Search/Exam
Apr 4, 2022
Dec 13, 2021
Annex to the communication
Search/Exam
Dec 13, 2021
Communication from the Examining Division
Search/Exam
Aug 24, 2021
(Electronic) Receipt
Search/Exam
Aug 24, 2021
Amended claims with annotations
Search/Exam
Aug 24, 2021
Claims
Search/Exam
Aug 24, 2021
Letter accompanying subsequently filed items
Search/Exam
Aug 24, 2021
Apr 14, 2021
Annex to the communication
Search/Exam
Apr 14, 2021
Communication from the Examining Division
Search/Exam
Apr 9, 2021
Examination started
Search/Exam
Dec 11, 2020
(Electronic) Receipt
Search/Exam
Dec 11, 2020
Dec 11, 2020
Amended claims with annotations
Search/Exam
Dec 11, 2020
Amendments received before examination
Search/Exam
Dec 11, 2020
Letter accompanying subsequently filed items
Search/Exam
Aug 12, 2020
Jun 9, 2020
Jun 5, 2020
Communication to designated inventor
Search/Exam
Jun 5, 2020
Communication to designated inventor
Search/Exam
Jun 5, 2020
Communication to designated inventor
Search/Exam
Jun 5, 2020
Communication to designated inventor
Search/Exam
May 20, 2020
Apr 22, 2020
Information regarding early processing
Search/Exam
Apr 15, 2020
(Electronic) Receipt
Search/Exam
Apr 15, 2020
Letter which had not been notified
Search/Exam
Apr 15, 2020
Request for entry into the European phase
Search/Exam
Mar 13, 2020
Information on entry into European phase
Search/Exam
Jun 5, 2019
Jun 5, 2019
Jun 5, 2019
Jun 5, 2019
Jun 5, 2019
May 9, 2019
Converted Sequence Listing
Search/Exam
May 9, 2019
Copy of the international search report
Search/Exam
May 9, 2019
Published international application - A1
Search/Exam
Apr 3, 2019
Mar 29, 2019
Mar 8, 2019
Mar 8, 2019
Feb 5, 2019
Annex
PCTISA
Feb 5, 2019
Feb 5, 2019
Feb 5, 2019
Feb 5, 2019
Jan 28, 2019
ISR: cited documents
PCTISA
Jan 25, 2019
Jan 25, 2019
Jan 25, 2019
Nov 22, 2018
Nov 22, 2018
Nov 12, 2018
Abstract
PCTISA
Nov 12, 2018
Annex
PCTISA
Nov 12, 2018
Claims
PCTISA
Nov 12, 2018
Description
PCTISA
Nov 12, 2018
Drawings
PCTISA
Nov 12, 2018
Nov 12, 2018
Nov 12, 2018
Nov 12, 2018
Nov 12, 2018