Common Light Chain Mouse

Patent No. EP2501817 (titled "Common Light Chain Mouse") was filed by Regeneron Pharmaceuticals on Feb 8, 2011. The application was issued on Apr 21, 2021.

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
MERUS	May 25, 2016	LAHRTZ

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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Mar 25, 2021
Decision to maintain the European patent in amended form
Mar 22, 2021
Termination of the opposition proceedings with maintenance of patent
Mar 16, 2021
(Electronic) Receipt
Mar 16, 2021
Clean copy of description pages in the opposition procedure
Mar 16, 2021
Filing of the translation of the amended claims
Mar 16, 2021
French translation of claims
Mar 16, 2021
German translation of the claims
Mar 16, 2021
Letter accompanying subsequently filed items
Dec 11, 2020
Communication to opponent concerning maintenance
Dec 11, 2020
Communication with request to file translations
Dec 8, 2020
Maintenance of the patent with the documents specified in the final decision
Nov 23, 2020
Refund of fees
Nov 19, 2020
F3324 Closure of the appeal proceedings: withdrawal of the appeal/ application/ opposition
Nov 10, 2020
(Electronic) Receipt
Nov 10, 2020
Letter accompanying subsequently filed items
Nov 10, 2020
Withdrawal of an appeal
Jan 30, 2019
Refund of fees
Jan 21, 2019
Composition of the board (T)
Jan 17, 2019
(Electronic) Receipt
Jan 17, 2019
Letter accompanying subsequently filed items
Jan 17, 2019
Letter relating to Appeal Procedure
Jan 10, 2019
F3345 Forwarding of submissions to parties
Jan 7, 2019
(Electronic) Receipt
Jan 7, 2019
Letter accompanying subsequently filed items
Jan 7, 2019
Withdrawal of an opposition
Dec 21, 2018
Request concerning representative opponent
Sep 12, 2018
F3344 Setting time limit for reply/ file observations to appeal (inter partes)
Sep 12, 2018
F3344 Setting time limit for reply/ file observations to appeal (inter partes)
Sep 6, 2018
(Electronic) Receipt
Sep 6, 2018
Letter accompanying subsequently filed items
Sep 6, 2018
Statement of grounds of appeal
Sep 6, 2018
Statement of grounds of appeal
Sep 4, 2018
(Electronic) Receipt
Sep 4, 2018
Letter accompanying subsequently filed items
Sep 4, 2018
Statement of grounds of appeal
Jun 15, 2018
F3204 Communication of the file number to the parties
Jun 15, 2018
F3204 Communication of the file number to the parties
Jun 11, 2018
(Electronic) Receipt
Jun 11, 2018
Letter accompanying subsequently filed items
Jun 11, 2018
Notice of appeal
Jun 1, 2018
F3204 Communication of the file number to the parties
May 25, 2018
(Electronic) Receipt
May 25, 2018
Letter accompanying subsequently filed items
May 25, 2018
Notice of appeal
May 25, 2018
Processing of an appeal
May 4, 2018
(Electronic) Receipt
May 4, 2018
Advice of delivery
May 4, 2018
Letter accompanying subsequently filed items
Apr 30, 2018
Advice of delivery
Apr 26, 2018
Acknowledgement of a document
Apr 26, 2018
Acknowledgement of a document
Apr 26, 2018
Advice of delivery
Apr 26, 2018
Annex to the communication - opposition
Apr 26, 2018
Decision of the Opposition Division and instruction
Apr 26, 2018
Grounds for the decision (Annex) - opposition
Apr 26, 2018
Interlocutory decision in opposition proceedings
Apr 26, 2018
Internal form - Opposition/addressees
Apr 26, 2018
Internal form - Opposition/addressees
Apr 26, 2018
Means of redress
Apr 26, 2018
Minutes of the oral proceedings (Opposition Division) - conclusion of the proceedings
Apr 26, 2018
Minutes of the oral proceedings (Opposition Division) - conclusion of the proceedings
Apr 26, 2018
Minutes of the oral proceedings (Opposition Division) - introduction of the parties
Apr 26, 2018
OPPODREX with handwritten amendments
Apr 26, 2018
Provision of a copy of the minutes - opposition procedure
Apr 26, 2018
Scanned annex to a communication - opposition procedure
Apr 26, 2018
Scanned annex to a communication - opposition procedure
Mar 26, 2018
Brief communication - Opposition proceedings
Mar 21, 2018
(Electronic) Receipt
Mar 21, 2018
Amended claims with annotations
Mar 21, 2018
Amended description with annotations
Mar 21, 2018
Clean copy of claims in the opposition procedure
Mar 21, 2018
Clean copy of description pages in the opposition procedure
Mar 21, 2018
Letter accompanying subsequently filed items
Mar 21, 2018
Letter regarding the opposition procedure (no time limit)
Feb 22, 2018
Information about the result of oral proceedings
Feb 8, 2018
Brief communication - Opposition proceedings
Feb 8, 2018
Brief communication - Opposition proceedings
Feb 5, 2018
(Electronic) Receipt
Feb 5, 2018
Any annexes (other than citation) to an opposition letter
Feb 5, 2018
Any annexes (other than citation) to an opposition letter
Feb 5, 2018
Any annexes (other than citation) to an opposition letter
Feb 5, 2018
Letter accompanying subsequently filed items
Feb 5, 2018
Written submission in preparation to/during oral proceedings
Feb 3, 2018
Any annexes (other than citation) to an opposition letter
Feb 3, 2018
Written submission in preparation to/during oral proceedings
Jan 29, 2018
Brief communication - Opposition proceedings
Jan 24, 2018
(Electronic) Receipt
Jan 24, 2018
Letter accompanying subsequently filed items
Jan 24, 2018
Written submission in preparation to/during oral proceedings
Jan 5, 2018
Brief communication - Opposition proceedings
Jan 5, 2018
Brief communication - Opposition proceedings
Dec 22, 2017
(Electronic) Receipt
Dec 22, 2017
(Electronic) Receipt
Dec 22, 2017
Amended claims with annotations
Dec 22, 2017
Amended claims with annotations
Dec 22, 2017
Amended claims with annotations
Dec 22, 2017
Amended claims with annotations
Dec 22, 2017
Amended claims with annotations
Dec 22, 2017
Amended claims with annotations
Dec 22, 2017
Amended claims with annotations
Dec 22, 2017
Amended claims with annotations
Dec 22, 2017
Amended claims with annotations
Dec 22, 2017
Amended claims with annotations
Dec 22, 2017
Amended claims with annotations
Dec 22, 2017
Amended claims with annotations
Dec 22, 2017
Amended claims with annotations
Dec 22, 2017
Amended claims with annotations
Dec 22, 2017
Amended claims with annotations
Dec 22, 2017
Amended claims with annotations
Dec 22, 2017
Amended claims with annotations
Dec 22, 2017
Amended claims with annotations
Dec 22, 2017
Amended claims with annotations
Dec 22, 2017
Amended claims with annotations
Dec 22, 2017
Amended claims with annotations
Dec 22, 2017
Amended claims with annotations
Dec 22, 2017
Amended claims with annotations
Dec 22, 2017
Amended claims with annotations
Dec 22, 2017
Amended claims with annotations
Dec 22, 2017
Amended claims with annotations
Dec 22, 2017
Amended claims with annotations
Dec 22, 2017
Amended claims with annotations
Dec 22, 2017
Amended claims with annotations
Dec 22, 2017
Amended claims with annotations
Dec 22, 2017
Amended claims with annotations
Dec 22, 2017
Amended claims with annotations
Dec 22, 2017
Amended claims with annotations
Dec 22, 2017
Amended claims with annotations
Dec 22, 2017
Amended claims with annotations
Dec 22, 2017
Claims
Dec 22, 2017
Claims
Dec 22, 2017
Claims
Dec 22, 2017
Claims
Dec 22, 2017
Claims
Dec 22, 2017
Claims
Dec 22, 2017
Claims
Dec 22, 2017
Claims
Dec 22, 2017
Claims
Dec 22, 2017
Claims
Dec 22, 2017
Claims
Dec 22, 2017
Claims
Dec 22, 2017
Claims
Dec 22, 2017
Claims
Dec 22, 2017
Claims
Dec 22, 2017
Claims
Dec 22, 2017
Claims
Dec 22, 2017
Claims
Dec 22, 2017
Claims
Dec 22, 2017
Claims
Dec 22, 2017
Claims
Dec 22, 2017
Claims
Dec 22, 2017
Claims
Dec 22, 2017
Claims
Dec 22, 2017
Claims
Dec 22, 2017
Claims
Dec 22, 2017
Claims
Dec 22, 2017
Claims
Dec 22, 2017
Claims
Dec 22, 2017
Claims
Dec 22, 2017
Claims
Dec 22, 2017
Claims
Dec 22, 2017
Claims
Dec 22, 2017
Claims
Dec 22, 2017
Claims
Dec 22, 2017
Claims
Dec 22, 2017
Letter accompanying subsequently filed items
Dec 22, 2017
Letter accompanying subsequently filed items
Dec 22, 2017
Letter accompanying subsequently filed items
Dec 22, 2017
Non-patent literature cited during the opposition procedure
Dec 22, 2017
Written submission in preparation to/during oral proceedings
Dec 22, 2017
Written submission in preparation to/during oral proceedings
Dec 6, 2017
(Electronic) Receipt
Dec 6, 2017
Letter accompanying subsequently filed items
Dec 6, 2017
Letter regarding the opposition procedure (no time limit)
Dec 4, 2017
Brief communication - Opposition proceedings
Nov 27, 2017
Request for interpreters during oral proceedings
Aug 10, 2017
(Electronic) Receipt
Aug 10, 2017
Advice of delivery
Aug 10, 2017
Letter accompanying subsequently filed items
Aug 4, 2017
Communication about missing advice of delivery
Jun 30, 2017
Advice of delivery
Jun 27, 2017
Advice of delivery
Jun 26, 2017
Acknowledgement of a document
Jun 26, 2017
Acknowledgement of a document
Jun 26, 2017
Advice of delivery
Jun 26, 2017
Information concerning oral proceedings
Jun 26, 2017
Summons to attend oral proceedings
Jun 26, 2017
Summons to attend oral proceedings
Jun 23, 2017
Notification concerning the date of oral proceedings
Jun 23, 2017
Notification concerning the date of oral proceedings
Jun 12, 2017
Communication of amended entries concerning the representative
Jun 7, 2017
Submission concerning change of applicant's representative
Jun 6, 2017
Submission concerning change of applicant's representative
Jun 2, 2017
Brief communication - Opposition proceedings
May 29, 2017
Brief communication - Opposition proceedings
May 24, 2017
(Electronic) Receipt
May 24, 2017
Letter accompanying subsequently filed items
May 24, 2017
Written submission in preparation to/during oral proceedings
May 23, 2017
(Electronic) Receipt
May 23, 2017
Advice of delivery
May 23, 2017
Letter accompanying subsequently filed items
May 22, 2017
Advice of delivery
May 19, 2017
Advice of delivery
May 19, 2017
Oral proceedings: Request for postponement
May 19, 2017
Summons to attend oral proceedings
May 17, 2017
Acknowledgement of a document
May 17, 2017
Acknowledgement of a document
May 17, 2017
Annex to the communication - opposition
May 17, 2017
Information concerning oral proceedings
May 17, 2017
Preparation for oral proceedings
May 17, 2017
Summons to attend oral proceedings
May 17, 2017
Summons to attend oral proceedings
Mar 23, 2017
Brief communication - Opposition proceedings
Mar 20, 2017
Reply from the opponent to submission of proprietor
Mar 17, 2017
Reply from the opponent to submission of proprietor
Jan 19, 2017
Brief communication - Opposition proceedings
Jan 19, 2017
Communication of amended entries
Jan 9, 2017
Brief communication - Opposition proceedings
Dec 23, 2016
(Electronic) Receipt
Dec 23, 2016
Letter accompanying subsequently filed items
Dec 23, 2016
Non-patent literature cited during the opposition procedure
Dec 23, 2016
Non-patent literature cited during the opposition procedure
Dec 23, 2016
Non-patent literature cited during the opposition procedure
Dec 23, 2016
Non-patent literature cited during the opposition procedure
Dec 23, 2016
Reply of the patent proprietor to the notice(s) of opposition
Dec 23, 2016
Reply of the patent proprietor to the notice(s) of opposition
Dec 23, 2016
Request for a change of address - opponent
Jul 5, 2016
Brief communication - Opposition proceedings
Jul 5, 2016
Grant of extension of time limit (opposition procedure)
Jun 30, 2016
(Electronic) Receipt
Jun 30, 2016
Letter accompanying subsequently filed items
Jun 30, 2016
Request for extension of time limit
Jun 29, 2016
Communication of a notice of opposition and request to file observations
Jun 29, 2016
Notice of further oppositions to opponent(s)
Jun 2, 2016
Communication of a notice of opposition - first information to patent proprietor
May 25, 2016
Non-patent literature cited during the opposition procedure
May 25, 2016
Non-patent literature cited during the opposition procedure
May 25, 2016
Non-patent literature cited during the opposition procedure
May 25, 2016
Non-patent literature cited during the opposition procedure
May 25, 2016
Non-patent literature cited during the opposition procedure
May 25, 2016
Non-patent literature cited during the opposition procedure
May 25, 2016
Non-patent literature cited during the opposition procedure
May 25, 2016
Non-patent literature cited during the opposition procedure
May 25, 2016
Non-patent literature cited during the opposition procedure
May 25, 2016
Non-patent literature cited during the opposition procedure
May 25, 2016
Non-patent literature cited during the opposition procedure
May 25, 2016
Non-patent literature cited during the opposition procedure
May 25, 2016
Notice of opposition
May 25, 2016
Patent document cited during the opposition procedure
May 25, 2016
Patent document cited during the opposition procedure
May 25, 2016
Patent document cited during the opposition procedure
May 25, 2016
Patent document cited during the opposition procedure
May 25, 2016
Patent document cited during the opposition procedure
May 25, 2016
Patent document cited during the opposition procedure
May 25, 2016
Patent document cited during the opposition procedure
May 25, 2016
Patent document cited during the opposition procedure
May 25, 2016
Patent document cited during the opposition procedure
May 25, 2016
Payment of fees and costs
Aug 26, 2015
Transmission of the certificate for a European patent pursuant to Rule 74 EPC
Jul 30, 2015
Decision to grant a European patent
Jun 19, 2015
Annex to the communication
Jun 19, 2015
Consultation by telephone/in person
Jun 19, 2015
Result of consultation by telephone/in person
May 28, 2015
Processing of request for correction of text proposed for grant or third party observations (from 01-04-2012)
Apr 20, 2015
(Electronic) Receipt
Apr 20, 2015
Letter accompanying subsequently filed items
Apr 20, 2015
Reply from applicant/patentee regarding third party observations
Apr 17, 2015
Acknowledgement of receipt of third party observations
Apr 17, 2015
Transmittal of third party observations to applicant
Apr 14, 2015
Processing of request for correction of text proposed for grant or third party observations (from 01-04-2012)
Apr 10, 2015
(Electronic) Receipt
Apr 10, 2015
Letter accompanying subsequently filed items
Apr 10, 2015
Non-patent literature filed by a third party
Apr 10, 2015
Observations by third parties
Apr 10, 2015
Patent document filed by a Third party
Apr 10, 2015
Patent document filed by a Third party
Apr 8, 2015
(Electronic) Receipt
Apr 8, 2015
Filing of the translations of the claims
Apr 8, 2015
French translation of claims
Apr 8, 2015
German translation of the claims
Apr 8, 2015
Letter accompanying subsequently filed items
Mar 26, 2015
Bibliographic data of the European patent application
Mar 26, 2015
Communication about intention to grant a European patent
Mar 26, 2015
Intention to grant (signatures)
Mar 26, 2015
Text intended for grant (clean copy)
Mar 26, 2015
Text intended for grant (sequence listing)
Mar 26, 2015
Text intended for grant (version for approval)
Feb 13, 2015
(Electronic) Receipt
Feb 13, 2015
Amended claims with annotations
Feb 13, 2015
Amended description with annotations
Feb 13, 2015
Claims
Feb 13, 2015
Description
Feb 13, 2015
Letter accompanying subsequently filed items
Feb 13, 2015
Reply to communication from the Examining Division
Nov 24, 2014
Acknowledgement of receipt of third party observations
Nov 24, 2014
Transmittal of third party observations to applicant
Nov 18, 2014
(Electronic) Receipt
Nov 18, 2014
Letter accompanying subsequently filed items
Nov 18, 2014
Observations by third parties
Nov 18, 2014
Patent document filed by a Third party
Nov 18, 2014
Patent document filed by a Third party
Nov 11, 2014
Annex to the communication
Nov 11, 2014
Communication from the Examining Division
Sep 26, 2014
(Electronic) Receipt
Sep 26, 2014
Amended claims with annotations
Sep 26, 2014
Claims
Sep 26, 2014
Letter accompanying subsequently filed items
Sep 26, 2014
Reply to communication from the Examining Division
May 16, 2014
Annex to the communication
May 16, 2014
Communication from the Examining Division
May 2, 2014
(Electronic) Receipt
May 2, 2014
Letter accompanying subsequently filed items
May 20, 2013
(Electronic) Receipt
May 20, 2013
Letter accompanying subsequently filed items
May 20, 2013
Reply from applicant/patentee regarding third party observations
Mar 6, 2013
Acknowledgement of receipt of third party observations
Mar 6, 2013
Transmittal of third party observations to applicant
Feb 28, 2013
Non-patent literature filed by a third party
Feb 28, 2013
Non-patent literature filed by a third party
Feb 28, 2013
Non-patent literature filed by a third party
Feb 28, 2013
Non-patent literature filed by a third party
Feb 28, 2013
Observations by third parties
Feb 18, 2013
(Electronic) Receipt
Feb 18, 2013
Amended claims with annotations
Feb 18, 2013
Claims
Feb 18, 2013
Letter accompanying subsequently filed items
Feb 18, 2013
Reply to communication from the Examining Division
Feb 8, 2013
Communication to designated inventor
Feb 7, 2013
Brief communication to applicant/representative
Feb 1, 2013
(Electronic) Receipt
Feb 1, 2013
Designation of inventor
Feb 1, 2013
Letter accompanying subsequently filed items
Feb 1, 2013
Letter concerning the inventor
Feb 1, 2013
Notification of the recording of a change
Oct 9, 2012
Annex to the communication
Oct 9, 2012
Communication from the Examining Division
Sep 12, 2012
Communication to designated inventor
Sep 12, 2012
Communication to designated inventor
Sep 12, 2012
Communication to designated inventor
Sep 12, 2012
Communication to designated inventor
Sep 12, 2012
Communication to designated inventor
Aug 29, 2012
Copy of the international preliminary report on patentability
Aug 29, 2012
Notification on forthcoming publication of bibliographic data
Jun 22, 2012
(Electronic) Receipt
Jun 22, 2012
Amended claims filed after receipt of (European) search report
Jun 22, 2012
Amended claims with annotations
Jun 22, 2012
Amendments received before examination
Jun 22, 2012
Non-patent literature cited during the examination procedure
Jun 22, 2012
Non-patent literature cited during the examination procedure
Jun 22, 2012
Non-patent literature cited during the examination procedure
Jun 22, 2012
Patent document cited during the examination procedure
Jun 22, 2012
Request for entry into the European phase
Jun 15, 2012
Information on entry into European phase
Aug 30, 2011
Priority document (electronically transmitted)
Aug 11, 2011
Copy of the international search report
Aug 11, 2011
Notification of the recording of a change
Aug 11, 2011
Published international application - A1
Aug 11, 2011
Sequence listing
Apr 7, 2011
Written opinion of the ISA, boxes No. I to VIII
Apr 7, 2011
Written opinion of the ISA, cover sheet
Apr 7, 2011
Written opinion of the ISA, supplemental box
Feb 17, 2011
Abstract
Feb 17, 2011
Claims
Feb 17, 2011
Description
Feb 17, 2011
Drawings
Feb 17, 2011
Sequence listing

EP2501817

REGENERON PHARMACEUTICALS

Application Number: EP11703799A
Filing Date: Feb 8, 2011
Status: Patent Maintained As Amended; Mar 19, 2021
Publication Date: Apr 21, 2021
External Links: Slate, Register , Google Patents

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Common Light Chain Mouse

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Dossier Documents

EP2501817