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The patent EP2738258 was granted to Regeneron Pharmaceuticals on Feb 1, 2023. The application was filed on Feb 24, 2012 under application number EP14154918A. The patent is currently recorded with a legal status of "Patent Maintained As Amended".

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 |
|---|---|---|---|
| KYMAB | Jun 25, 2020 | CMS CAMERON MCKENNA NABARRO OLSWANG | - |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | US2007280945 |
| DESCRIPTION | US6586251 |
| DESCRIPTION | US6596541 |
| DESCRIPTION | US7105348 |
| DESCRIPTION | US7294754 |
| DESCRIPTION | US7473557 |
| DESCRIPTION | US7576259 |
| DESCRIPTION | US7659442 |
| EXAMINATION | WO2013061098 |
| EXAMINATION | WO2013079953 |
| OPPOSITION | WO02066630 |
| OPPOSITION | WO2011004192 |
| OPPOSITION | WO2011158009 |
| OPPOSITION | WO2013079953 |
| OTHER | EP2793567 |
| OTHER | WO02066630 |
| SEARCH | US2004018626 |
| SEARCH | WO2011004192 |
| SEARCH | WO2011158009 |
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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Jan 5, 2023
Jan 5, 2023
Jan 4, 2023
Refund of fees
OPPO
Jan 2, 2023
Dec 22, 2022
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(Electronic) Receipt
Appeal
Oct 28, 2022
Oct 28, 2022
Withdrawal of an appeal
Appeal
Oct 4, 2022
Oct 4, 2022
Sep 20, 2022
(Electronic) Receipt
Appeal
Sep 20, 2022
Sep 20, 2022
Notice of appeal
Appeal
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Means of redress
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Document concerning representation
Search/Exam
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Authorisation
OPPO
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Oct 7, 2019
Aug 29, 2019
Decision to grant a European patent
Search/Exam
Aug 12, 2019
(Electronic) Receipt
Search/Exam
Aug 12, 2019
Filing of the translations of the claims
Search/Exam
Aug 12, 2019
French translation of claims
Search/Exam
Aug 12, 2019
German translation of the claims
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Aug 12, 2019
Letter accompanying subsequently filed items
Search/Exam
May 23, 2019
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Intention to grant (signatures)
Search/Exam
May 23, 2019
Text intended for grant (clean copy)
Search/Exam
May 23, 2019
Text intended for grant (sequence listing)
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May 23, 2019
Apr 16, 2019
(Electronic) Receipt
Search/Exam
Apr 16, 2019
Amended claims with annotations
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Apr 16, 2019
Amended description with annotations
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Apr 16, 2019
Claims
Search/Exam
Apr 16, 2019
Description
Search/Exam
Apr 16, 2019
Letter accompanying subsequently filed items
Search/Exam
Apr 16, 2019
Mar 19, 2019
Annex to the communication
Search/Exam
Mar 19, 2019
Communication from the Examining Division
Search/Exam
Mar 14, 2019
Mar 8, 2019
Observations by third parties
Search/Exam
Dec 20, 2018
(Electronic) Receipt
Search/Exam
Dec 20, 2018
Amended claims with annotations
Search/Exam
Dec 20, 2018
Claims
Search/Exam
Dec 20, 2018
Letter accompanying subsequently filed items
Search/Exam
Dec 20, 2018
Dec 17, 2018
Dec 17, 2018
Dec 11, 2018
(Electronic) Receipt
Search/Exam
Dec 11, 2018
Letter accompanying subsequently filed items
Search/Exam
Dec 11, 2018
Observations by third parties
Search/Exam
Oct 30, 2018
Annex to the communication
Search/Exam
Oct 30, 2018
Communication from the Examining Division
Search/Exam
May 16, 2018
(Electronic) Receipt
Search/Exam
May 16, 2018
Amended claims with annotations
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May 16, 2018
Claims
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May 16, 2018
Letter accompanying subsequently filed items
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May 16, 2018
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Jan 18, 2018
Annex to the communication
Search/Exam
Jan 18, 2018
Communication from the Examining Division
Search/Exam
Nov 20, 2017
Nov 20, 2017
Nov 14, 2017
(Electronic) Receipt
Search/Exam
Nov 14, 2017
Citation filed by a third party
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Nov 14, 2017
Citation filed by a third party
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Nov 14, 2017
Citation filed by a third party
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Citation filed by a third party
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Nov 14, 2017
Citation filed by a third party
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Nov 14, 2017
Citation filed by a third party
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Nov 14, 2017
Citation filed by a third party
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Nov 14, 2017
Letter accompanying subsequently filed items
Search/Exam
Nov 14, 2017
Observations by third parties
Search/Exam
Nov 14, 2017
Patent document filed by a Third party
Search/Exam
Oct 5, 2017
(Electronic) Receipt
Search/Exam
Oct 5, 2017
Amended claims with annotations
Search/Exam
Oct 5, 2017
Claims
Search/Exam
Oct 5, 2017
Letter accompanying subsequently filed items
Search/Exam
Oct 5, 2017
Jun 7, 2017
Annex to the communication
Search/Exam
Jun 7, 2017
Communication from the Examining Division
Search/Exam
Mar 28, 2017
Mar 14, 2017
(Electronic) Receipt
Search/Exam
Mar 14, 2017
Enquiry as to the processing of the file
Search/Exam
Mar 14, 2017
Letter accompanying subsequently filed items
Search/Exam
Oct 17, 2016
Oct 6, 2016
Submission concerning representation
Search/Exam
Oct 5, 2016
Submission concerning representation
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Jul 29, 2016
(Electronic) Receipt
Search/Exam
Jul 29, 2016
Letter accompanying subsequently filed items
Search/Exam
Jul 29, 2016
Jun 9, 2016
Annex to the communication
Search/Exam
Jun 9, 2016
Communication from the Examining Division
Search/Exam
Mar 16, 2016
Annex
Search/Exam
Mar 16, 2016
Mar 14, 2016
(Electronic) Receipt
Search/Exam
Mar 14, 2016
Letter accompanying subsequently filed items
Search/Exam
Mar 14, 2016
Mar 9, 2016
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Mar 2, 2016
(Electronic) Receipt
Search/Exam
Mar 2, 2016
Letter accompanying subsequently filed items
Search/Exam
Mar 2, 2016
Observations by third parties
Search/Exam
Feb 29, 2016
(Electronic) Receipt
Search/Exam
Feb 29, 2016
Letter accompanying subsequently filed items
Search/Exam
Feb 29, 2016
Feb 5, 2016
Annex to the communication
Search/Exam
Feb 5, 2016
Communication from the Examining Division
Search/Exam
Nov 18, 2015
Nov 18, 2015
Nov 12, 2015
(Electronic) Receipt
Search/Exam
Nov 12, 2015
Letter accompanying subsequently filed items
Search/Exam
Nov 12, 2015
Non-patent literature filed by a third party
Search/Exam
Nov 12, 2015
Observations by third parties
Search/Exam
Nov 3, 2015
(Electronic) Receipt
Search/Exam
Nov 3, 2015
Annex
Search/Exam
Nov 3, 2015
Annex
Search/Exam
Nov 3, 2015
Annex
Search/Exam
Nov 3, 2015
Letter accompanying subsequently filed items
Search/Exam
Nov 3, 2015
Oct 30, 2015
Annex to the communication
Search/Exam
Oct 30, 2015
Communication from the Examining Division
Search/Exam
Jul 29, 2015
(Electronic) Receipt
Search/Exam
Jul 29, 2015
Amended claims with annotations
Search/Exam
Jul 29, 2015
Amended description with annotations
Search/Exam
Jul 29, 2015
Annex
Search/Exam
Jul 29, 2015
Annex
Search/Exam
Jul 29, 2015
Claims
Search/Exam
Jul 29, 2015
Description
Search/Exam
Jul 29, 2015
Letter accompanying subsequently filed items
Search/Exam
Jul 29, 2015
Jun 17, 2015
Annex to the communication
Search/Exam
Jun 17, 2015
Communication from the Examining Division
Search/Exam
Apr 20, 2015
Apr 20, 2015
Apr 14, 2015
(Electronic) Receipt
Search/Exam
Apr 14, 2015
Citation filed by a third party
Search/Exam
Apr 14, 2015
Citation filed by a third party
Search/Exam
Apr 14, 2015
Citation filed by a third party
Search/Exam
Apr 14, 2015
Letter accompanying subsequently filed items
Search/Exam
Apr 14, 2015
Observations by third parties
Search/Exam
Apr 14, 2015
Patent document filed by a Third party
Search/Exam
Apr 14, 2015
Patent document filed by a Third party
Search/Exam
Mar 23, 2015
(Electronic) Receipt
Search/Exam
Mar 23, 2015
Letter accompanying subsequently filed items
Search/Exam
Mar 23, 2015
Feb 11, 2015
Annex to the communication
Search/Exam
Feb 11, 2015
Communication from the Examining Division
Search/Exam
Dec 3, 2014
Dec 3, 2014
Nov 26, 2014
(Electronic) Receipt
Search/Exam
Nov 26, 2014
Letter accompanying subsequently filed items
Search/Exam
Nov 26, 2014
Non-patent literature filed by a third party
Search/Exam
Nov 26, 2014
Observations by third parties
Search/Exam
Oct 29, 2014
(Electronic) Receipt
Search/Exam
Oct 29, 2014
Oct 29, 2014
Amended claims with annotations
Search/Exam
Oct 29, 2014
Amendments received before examination
Search/Exam
Oct 29, 2014
Letter accompanying subsequently filed items
Search/Exam
Sep 29, 2014
Sep 3, 2014
Refund of fees
Search/Exam
Aug 27, 2014
Aug 27, 2014
European search opinion
Search/Exam
Aug 27, 2014
European search report
Search/Exam
May 8, 2014
Notification of forthcoming publication
Search/Exam
Apr 28, 2014
Communication to designated inventor
Search/Exam
Apr 28, 2014
Communication to designated inventor
Search/Exam
Apr 28, 2014
Communication to designated inventor
Search/Exam
Feb 12, 2014
Abstract
Search/Exam
Feb 12, 2014
Feb 12, 2014
Amended claims with annotations
Search/Exam
Feb 12, 2014
Claims
Search/Exam
Feb 12, 2014
Converted Sequence Listing
Search/Exam
Feb 12, 2014
Description
Search/Exam
Feb 12, 2014
Designation of inventor
Search/Exam
Feb 12, 2014
Designation of inventor
Search/Exam
Feb 12, 2014
Designation of inventor
Search/Exam
Feb 12, 2014
Drawings
Search/Exam
Feb 12, 2014
Letter concerning search matters
Search/Exam
Feb 12, 2014
Request for grant of a European patent
Search/Exam
Oct 18, 2012
Priority document
Search/Exam
Oct 18, 2012
Priority document
Search/Exam
Oct 18, 2012
Priority document
Search/Exam