Antibody Producing Non-Human Mammals

Patent No. EP3456192 (titled "Antibody Producing Non-Human Mammals") was filed by Merus on Jun 29, 2009. The application was issued on Sep 3, 2025.

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
KYMAB	Jun 3, 2026	CMS CAMERON MCKENNA NABARRO OLSWANG

Dossier Documents

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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Jun 16, 2026
Communication of a notice of opposition and request to file observations
Jun 16, 2026
Notice of further oppositions to opponent(s)
Jun 10, 2026
Communication of a notice of opposition - first information to patent proprietor
Jun 3, 2026
(Electronic) Receipt
Jun 3, 2026
Citation in opposition procedure - 001
Jun 3, 2026
Citation in opposition procedure - 002
Jun 3, 2026
Citation in opposition procedure - 003
Jun 3, 2026
Citation in opposition procedure - 004
Jun 3, 2026
Citation in opposition procedure - 005
Jun 3, 2026
Citation in opposition procedure - 006
Jun 3, 2026
Citation in opposition procedure - 007
Jun 3, 2026
Citation in opposition procedure - 008
Jun 3, 2026
Citation in opposition procedure - 009
Jun 3, 2026
Citation in opposition procedure - 010
Jun 3, 2026
Citation in opposition procedure - 011
Jun 3, 2026
Citation in opposition procedure - 012
Jun 3, 2026
Citation in opposition procedure - 013
Jun 3, 2026
Citation in opposition procedure - 014
Jun 3, 2026
Consolidated list of cited opposition documents
Jun 3, 2026
Notice of opposition
Jun 3, 2026
Notice of opposition
Sep 16, 2025
Transmission of the certificate for a European patent pursuant to Rule 74 EPC
Aug 7, 2025
Decision to grant a European patent
Jul 25, 2025
(Electronic) Receipt
Jul 25, 2025
Filing of the translations of the claims
Jul 25, 2025
French translation of claims
Jul 25, 2025
German translation of the claims
Jul 11, 2025
Annex to the communication about intention to grant a European patent
Jul 11, 2025
Bibliographic data of the European patent application
Jul 11, 2025
Communication about intention to grant a European patent
Jul 11, 2025
Intention to grant (signatures)
Jul 11, 2025
Text intended for grant (clean copy)
Jul 11, 2025
Text intended for grant (version for approval)
Jun 6, 2025
Annex to the communication
Jun 6, 2025
Consultation by telephone/in person
Jun 6, 2025
Result of consultation by telephone/in person
May 14, 2025
Transmittal of third party observations to applicant
May 8, 2025
Observations by third parties
Mar 31, 2025
(Electronic) Receipt
Mar 31, 2025
Amended description with annotations
Mar 31, 2025
Description
Mar 31, 2025
Letter accompanying subsequently filed items
Mar 31, 2025
Request for correction/amendment of the text proposed for grant sent from 01.04.2012
Feb 28, 2025
Annex to the communication about intention to grant a European patent
Feb 28, 2025
Bibliographic data of the European patent application
Feb 28, 2025
Communication about intention to grant a European patent
Feb 28, 2025
Intention to grant (signatures)
Feb 28, 2025
Text intended for grant (clean copy)
Feb 28, 2025
Text intended for grant (version for approval)
Dec 6, 2024
Notification concerning the date of oral proceedings
Dec 3, 2024
(Electronic) Receipt
Dec 3, 2024
Amended claims with annotations
Dec 3, 2024
Amended description with annotations
Dec 3, 2024
Claims
Dec 3, 2024
Description
Dec 3, 2024
Letter accompanying subsequently filed items
Dec 3, 2024
Letter dealing with oral proceedings
Nov 29, 2024
(Electronic) Receipt
Nov 29, 2024
Communication for party to proceedings/third party
Nov 29, 2024
Letter accompanying subsequently filed items
Nov 29, 2024
Letter dealing with oral proceedings
Nov 29, 2024
Letter dealing with oral proceedings
Nov 29, 2024
Letter dealing with oral proceedings
Nov 28, 2024
Annex to the communication
Nov 28, 2024
Consultation by telephone/in person
Nov 28, 2024
Result of consultation by telephone/in person
Nov 11, 2024
(Electronic) Receipt
Nov 11, 2024
Amended claims with annotations
Nov 11, 2024
Amended claims with annotations
Nov 11, 2024
Amended claims with annotations
Nov 11, 2024
Amended claims with annotations
Nov 11, 2024
Amended claims with annotations
Nov 11, 2024
Amended claims with annotations
Nov 11, 2024
Amended claims with annotations
Nov 11, 2024
Amended claims with annotations
Nov 11, 2024
Claims
Nov 11, 2024
Claims
Nov 11, 2024
Claims
Nov 11, 2024
Claims
Nov 11, 2024
Claims
Nov 11, 2024
Claims
Nov 11, 2024
Claims
Nov 11, 2024
Claims
Nov 11, 2024
Letter accompanying subsequently filed items
Nov 11, 2024
Written submission in preparation to/during oral proceedings
Oct 21, 2024
Annex to a communication
Oct 21, 2024
Annex to the communication
Oct 21, 2024
Notification concerning the date of oral proceedings - with annex
Sep 3, 2024
(Electronic) Receipt
Sep 3, 2024
Amended claims with annotations
Sep 3, 2024
Amended claims with annotations
Sep 3, 2024
Amended claims with annotations
Sep 3, 2024
Annex
Sep 3, 2024
Claims
Sep 3, 2024
Claims
Sep 3, 2024
Claims
Sep 3, 2024
Letter accompanying subsequently filed items
Sep 3, 2024
Written submission in preparation to/during oral proceedings
Apr 23, 2024
New summons to attend oral proceedings - without reasoning
Mar 22, 2024
(Electronic) Receipt
Mar 22, 2024
Annex
Mar 22, 2024
Letter accompanying subsequently filed items
Mar 22, 2024
Oral proceedings: Request for postponement
Mar 20, 2024
Annex to the communication
Mar 20, 2024
Summons to attend oral proceedings
Dec 5, 2023
Communication of amended entries concerning the representative
Nov 24, 2023
Annexes in respect of a client data request
Nov 24, 2023
Letter accompanying subsequently filed items
Nov 24, 2023
Submission concerning change of applicant's representative
Jun 9, 2023
Communication of the registration of a transfer or change of name and/or address
Apr 12, 2023
Letter accompanying subsequently filed items
Apr 12, 2023
Submission concerning change of applicant's address
Nov 30, 2022
Document concerning representation
Feb 15, 2022
Communication of amended entries concerning the representative
Feb 9, 2022
Letter accompanying subsequently filed items
Feb 9, 2022
Submission concerning change of applicant's representative
Nov 10, 2020
(Electronic) Receipt
Nov 10, 2020
Annex
Nov 10, 2020
Letter accompanying subsequently filed items
Nov 10, 2020
Reply to communication from the Examining Division
Sep 11, 2020
Grant of extension of time limit (examination procedure)
Sep 8, 2020
(Electronic) Receipt
Sep 8, 2020
Letter accompanying subsequently filed items
Sep 8, 2020
Request for extension of time limit to communication from the Examining Division
Jun 12, 2020
Brief communication to applicant/representative
Jun 5, 2020
Communication confirming withdrawal from representation
May 29, 2020
(Electronic) Receipt
May 29, 2020
Letter accompanying subsequently filed items
May 29, 2020
Submission concerning change of applicant's representative
Apr 30, 2020
Annex to the communication
Apr 30, 2020
Communication from the Examining Division
Feb 26, 2020
(Electronic) Receipt
Feb 26, 2020
Letter accompanying subsequently filed items
Feb 26, 2020
Reply to communication from the Examining Division
Oct 16, 2019
Annex to the communication
Oct 16, 2019
Communication from the Examining Division
Oct 10, 2019
Examination started
Jul 19, 2019
(Electronic) Receipt
Jul 19, 2019
Amended claims filed after receipt of (European) search report
Jul 19, 2019
Amended claims with annotations
Jul 19, 2019
Amendments received before examination
Jul 19, 2019
Letter accompanying subsequently filed items
Mar 25, 2019
Reminder period for payment of examination fee/designation fee and correction of deficiencies in Written Opinion/amendment
Feb 20, 2019
Notification of forthcoming publication
Feb 20, 2019
Refund of fees
Feb 14, 2019
Communication regarding the transmission of the European search report
Feb 14, 2019
European search opinion
Feb 14, 2019
European search report
Feb 14, 2019
Information on Search Strategy
Jan 28, 2019
Search started
Nov 2, 2018
(Electronic) Receipt
Nov 2, 2018
(Partial) description filed in response to formal objections
Nov 2, 2018
Drawings
Nov 2, 2018
Letter accompanying subsequently filed items
Nov 2, 2018
Reply to the invitation to remedy deficiencies
Oct 4, 2018
Communication to designated inventor
Oct 4, 2018
Communication to designated inventor
Oct 4, 2018
Communication to designated inventor
Oct 4, 2018
Communication to designated inventor
Sep 14, 2018
(Electronic) Receipt
Sep 14, 2018
Designation of inventor
Sep 14, 2018
Letter accompanying subsequently filed items
Aug 22, 2018
Deficiencies in application documents - annex B and C
Aug 22, 2018
Deficiency in designation of inventor
Aug 10, 2018
(Electronic) Receipt
Aug 10, 2018
Letter concerning fees and payments
Jul 17, 2018
Abstract
Jul 17, 2018
Acknowledgement of receipt of electronic submission of the request for grant of a European patent
Jul 17, 2018
Claims
Jul 17, 2018
Converted Sequence Listing
Jul 17, 2018
Description
Jul 17, 2018
Drawings
Jul 17, 2018
Request for grant of a European patent
Oct 27, 2009
Priority document

EP3456192

MERUS

Application Number: EP18183994A
Filing Date: Jun 29, 2009
Status: Granted And Under Opposition; Aug 1, 2025
Publication Date: Sep 3, 2025
External Links: Slate, Register , Google Patents

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Antibody Producing Non-Human Mammals

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Dossier Documents

EP3456192