Steroids And Protein-Conjugates Thereof

Patent No. EP3538539 (titled "Steroids And Protein-Conjugates Thereof") was filed by Regeneron Pharmaceuticals on Nov 7, 2017. The application was issued on Aug 27, 2025.

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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Sep 9, 2025
Transmission of the certificate for a European patent pursuant to Rule 74 EPC
Jul 31, 2025
Decision to grant a European patent
Jul 23, 2025
(Electronic) Receipt
Jul 23, 2025
Filing of the translations of the claims
Jul 23, 2025
French translation of claims
Jul 23, 2025
German translation of the claims
Jul 23, 2025
Letter accompanying subsequently filed items
Mar 25, 2025
Bibliographic data of the European patent application
Mar 25, 2025
Communication about intention to grant a European patent
Mar 25, 2025
Intention to grant (signatures)
Mar 25, 2025
Text intended for grant (clean copy)
Mar 25, 2025
Text intended for grant (version for approval)
Sep 26, 2024
(Electronic) Receipt
Sep 26, 2024
Amended description with annotations
Sep 26, 2024
Description
Sep 26, 2024
Letter accompanying subsequently filed items
Sep 26, 2024
Reply to communication from the Examining Division
May 28, 2024
Annex to the communication
May 28, 2024
Communication from the Examining Division
Mar 18, 2024
(Electronic) Receipt
Mar 18, 2024
Amended description with annotations
Mar 18, 2024
Description
Mar 18, 2024
Letter accompanying subsequently filed items
Mar 18, 2024
Request for correction/amendment of the text proposed for grant sent from 01.04.2012
Dec 13, 2023
Annex to the communication about intention to grant a European patent
Dec 13, 2023
Bibliographic data of the European patent application
Dec 13, 2023
Communication about intention to grant a European patent
Dec 13, 2023
Intention to grant (signatures)
Dec 13, 2023
Text intended for grant (clean copy)
Dec 13, 2023
Text intended for grant (version for approval)
Apr 24, 2023
(Electronic) Receipt
Apr 24, 2023
Amended claims with annotations
Apr 24, 2023
Amended description with annotations
Apr 24, 2023
Claims
Apr 24, 2023
Description
Apr 24, 2023
Drawings
Apr 24, 2023
Letter accompanying subsequently filed items
Apr 24, 2023
Reply to communication from the Examining Division
Mar 24, 2023
Grant of extension of time limit (examination procedure)
Mar 20, 2023
(Electronic) Receipt
Mar 20, 2023
Request for extension of time limit to communication from the Examining Division
Nov 10, 2022
Annex to the communication
Nov 10, 2022
Communication from the Examining Division
Sep 20, 2021
(Electronic) Receipt
Sep 20, 2021
Amended claims with annotations
Sep 20, 2021
Claims
Sep 20, 2021
Letter accompanying subsequently filed items
Sep 20, 2021
Reply to communication from the Examining Division
Jul 21, 2021
Grant of extension of time limit (examination procedure)
Jul 16, 2021
(Electronic) Receipt
Jul 16, 2021
Letter accompanying subsequently filed items
Jul 16, 2021
Request for extension of time limit to communication from the Examining Division
Mar 11, 2021
Annex to the communication
Mar 11, 2021
Communication from Examining division including search results r.164(2)(b) EPC
Mar 11, 2021
Information on Search Strategy
Mar 11, 2021
Search results under rule 164(2)(b) EPC
Jan 26, 2021
(Electronic) Receipt
Jan 26, 2021
Letter accompanying subsequently filed items
Jan 26, 2021
Matter concerning the application
Nov 26, 2020
Annex to the communication
Nov 26, 2020
Communication from the examining division with an Invitation to pay a search fee(s)
Nov 20, 2020
Examination started
Jan 2, 2020
(Electronic) Receipt
Jan 2, 2020
Amended claims filed after receipt of (European) search report
Jan 2, 2020
Amended claims with annotations
Jan 2, 2020
Amended description filed after receipt of (European) search report
Jan 2, 2020
Amended description with annotations
Jan 2, 2020
Amended drawings filed after receipt of (European) search report
Jan 2, 2020
Amended drawings with annotations
Jan 2, 2020
Amendments received before examination
Jan 2, 2020
Letter accompanying subsequently filed items
Oct 14, 2019
Submission concerning representation
Aug 21, 2019
Notification on forthcoming publication of bibliographic data
Jun 17, 2019
Communication concerning correction of deficiencies in written opinion/amendment of application/payment of claims fee
Jun 14, 2019
Communication to designated inventor
Jun 14, 2019
Communication to designated inventor
Jun 14, 2019
Communication to designated inventor
Jun 5, 2019
Copy of the international preliminary report on patentability
May 20, 2019
(Electronic) Receipt
May 20, 2019
Request for entry into the European phase
May 20, 2019
Submission concerning representation
Mar 22, 2019
Information on entry into European phase
Jul 12, 2018
Copy of the international search report
Jul 12, 2018
Published international application - A9
Jun 21, 2018
Copy of the international search report
Jun 21, 2018
International publication of the international search report
Jun 4, 2018
Priority document (electronically transmitted)
Jun 4, 2018
Priority document (electronically transmitted)
May 25, 2018
Communication in cases for which no other form is applicable
May 25, 2018
Notification of decision concerning request for rectification
May 18, 2018
ISR: cited documents
May 17, 2018
Published international application - A2
May 17, 2018
Written opinion of the ISA, boxes No. I to VIII
May 17, 2018
Written opinion of the ISA, cover sheet
May 17, 2018
Written opinion of the ISA, supplemental box
Apr 13, 2018
Annex
Apr 13, 2018
Incoming letter related to ISA procedure
Apr 13, 2018
Substitute sheet (Rule 26) - drawings for ISA/EP
Mar 27, 2018
Communication in cases for which no other form is applicable
Mar 15, 2018
Notification of decision concerning request for rectification
Mar 6, 2018
Reply to invitation to pay additional fees
Feb 14, 2018
Rectified description sheet(s) produced by ISA/EP under Rule 91 PCT
Feb 14, 2018
Request for correction of obvious error
Feb 13, 2018
Disclaimer regarding the provisional opinion accompanying the partial search results
Feb 13, 2018
Partial International Search Report
Feb 13, 2018
Provisional opinion accompanying the partial search results
Dec 4, 2017
Notification of receipt of Search copy
Nov 20, 2017
Abstract
Nov 20, 2017
Annex
Nov 20, 2017
Claims
Nov 20, 2017
Description
Nov 20, 2017
Drawings
Nov 20, 2017
Fee calculation sheet for an international application
Nov 20, 2017
Invitation to Correct Defects in the International Application (copy for ISA/EP)
Nov 20, 2017
Notification Concerning Payment of Prescribed Fees (copy for ISA/EP)
Nov 20, 2017
Notification of the International Application Number and of the International Filing Date (copy for ISA/EP)
Nov 20, 2017
Request form for international application (copy for ISA/EP)

EP3538539

REGENERON PHARMACEUTICALS

Application Number: EP17801239A
Filing Date: Nov 7, 2017
Status: Granted And Under Opposition; Jul 25, 2025
Publication Date: Aug 27, 2025
External Links: Slate, Register , Google Patents

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Steroids And Protein-Conjugates Thereof

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Dossier Documents

EP3538539