Steel Production From Iron Smelt

Patent No. EP4237587 (titled "Steel Production From Iron Smelt") was filed by Primetals Austria on Oct 28, 2021. The application was issued on Aug 28, 2024.

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
THYSSENKRUPP STEEL EUROPE	May 23, 2025	THYSSENKRUPP STEEL EUROPE
ARCELORMITTAL	May 13, 2025	LAVOIX
TATA STEEL IJMUIDEN	Apr 15, 2025	GROUP SERVICES

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

Get instant alerts for new documents

Feb 5, 2026
(Electronic) Receipt
Feb 5, 2026
Letter accompanying subsequently filed items
Feb 5, 2026
Reply from the opponent to submission of proprietor
Jan 26, 2026
Brief communication - Opposition proceedings
Jan 26, 2026
Brief communication - Opposition proceedings
Jan 26, 2026
Brief communication - Opposition proceedings
Jan 26, 2026
Communication of amended entries concerning the representative
Jan 22, 2026
Communication concerning the filing of a power of attorney
Jan 20, 2026
(Electronic) Receipt
Jan 20, 2026
Authorisation
Jan 20, 2026
Letter accompanying subsequently filed items
Jan 20, 2026
Submission concerning change of proprietor's representative
Dec 18, 2025
Invitation to file an authorisation
Dec 15, 2025
(Electronic) Receipt
Dec 15, 2025
(Electronic) Receipt
Dec 15, 2025
Authorisation
Dec 15, 2025
Auxiliary request during Opposition procedure
Dec 15, 2025
Auxiliary request during Opposition procedure
Dec 15, 2025
Auxiliary request during Opposition procedure
Dec 15, 2025
Auxiliary request during Opposition procedure
Dec 15, 2025
Auxiliary request during Opposition procedure
Dec 15, 2025
Auxiliary request during Opposition procedure - 01
Dec 15, 2025
Auxiliary request during Opposition procedure - 02
Dec 15, 2025
Auxiliary request during Opposition procedure - 03
Dec 15, 2025
Auxiliary request during Opposition procedure - 04
Dec 15, 2025
Auxiliary request during Opposition procedure - 05
Dec 15, 2025
Letter accompanying subsequently filed items
Dec 15, 2025
Letter accompanying subsequently filed items
Dec 15, 2025
Main request during Opposition procedure
Dec 15, 2025
Main request during Opposition procedure
Dec 15, 2025
Reply of the patent proprietor to the notice(s) of opposition
Dec 15, 2025
Submission concerning change of proprietor's representative
Sep 3, 2025
Brief communication - Opposition proceedings
Sep 3, 2025
Brief communication - Opposition proceedings
Sep 3, 2025
Brief communication - Opposition proceedings
Sep 3, 2025
Grant of extension of time limit (opposition procedure)
Aug 27, 2025
(Electronic) Receipt
Aug 27, 2025
Letter accompanying subsequently filed items
Aug 27, 2025
Request for extension of time limit
Jun 13, 2025
Communication of a notice of opposition and request to file observations
Jun 13, 2025
Notice of further oppositions to opponent(s)
Jun 13, 2025
Notice of further oppositions to opponent(s)
Jun 13, 2025
Notice of further oppositions to opponent(s)
May 27, 2025
Communication of a notice of opposition - first information to patent proprietor
May 23, 2025
(Electronic) Receipt
May 23, 2025
Citation in opposition procedure
May 23, 2025
Citation in opposition procedure
May 23, 2025
Citation in opposition procedure - 020
May 23, 2025
Citation in opposition procedure - 021
May 23, 2025
Citation in opposition procedure - 022
May 23, 2025
Citation in opposition procedure - 022
May 23, 2025
Citation in opposition procedure - 023
May 23, 2025
Citation in opposition procedure - 024
May 23, 2025
Citation in opposition procedure - 025
May 23, 2025
Citation in opposition procedure - 026
May 23, 2025
Citation in opposition procedure - 027
May 23, 2025
Citation in opposition procedure - 028
May 23, 2025
Citation in opposition procedure - 029
May 23, 2025
Citation in opposition procedure - 030
May 23, 2025
Citation in opposition procedure - 031
May 23, 2025
Consolidated list of cited opposition documents
May 23, 2025
Notice of opposition
May 23, 2025
Notice of opposition
May 15, 2025
Communication of a notice of opposition - first information to patent proprietor
May 13, 2025
(Electronic) Receipt
May 13, 2025
Citation in opposition procedure
May 13, 2025
Citation in opposition procedure
May 13, 2025
Citation in opposition procedure - 010
May 13, 2025
Citation in opposition procedure - 011
May 13, 2025
Citation in opposition procedure - 011
May 13, 2025
Citation in opposition procedure - 012
May 13, 2025
Citation in opposition procedure - 013
May 13, 2025
Citation in opposition procedure - 014
May 13, 2025
Citation in opposition procedure - 015
May 13, 2025
Citation in opposition procedure - 015
May 13, 2025
Citation in opposition procedure - 016
May 13, 2025
Citation in opposition procedure - 017
May 13, 2025
Citation in opposition procedure - 018
May 13, 2025
Citation in opposition procedure - 018
May 13, 2025
Citation in opposition procedure - 019
May 13, 2025
Notice of opposition
May 13, 2025
Notice of opposition
Apr 16, 2025
Communication of a notice of opposition - first information to patent proprietor
Apr 15, 2025
(Electronic) Receipt
Apr 15, 2025
Citation in opposition procedure - 001
Apr 15, 2025
Citation in opposition procedure - 002
Apr 15, 2025
Citation in opposition procedure - 003
Apr 15, 2025
Citation in opposition procedure - 004
Apr 15, 2025
Citation in opposition procedure - 005
Apr 15, 2025
Citation in opposition procedure - 006
Apr 15, 2025
Citation in opposition procedure - 007
Apr 15, 2025
Citation in opposition procedure - 008
Apr 15, 2025
Citation in opposition procedure - 009
Apr 15, 2025
Notice of opposition
Apr 15, 2025
Notice of opposition
Sep 10, 2024
Transmission of the certificate for a European patent pursuant to Rule 74 EPC
Aug 1, 2024
Decision to grant a European patent
Jul 18, 2024
(Electronic) Receipt
Jul 18, 2024
English translation of the claims
Jul 18, 2024
Filing of the translations of the claims
Jul 18, 2024
French translation of claims
Jul 18, 2024
Letter accompanying subsequently filed items
May 8, 2024
Annex to the communication about intention to grant a European patent
May 8, 2024
Bibliographic data of the European patent application
May 8, 2024
Communication about intention to grant a European patent
May 8, 2024
Intention to grant (signatures)
May 8, 2024
Text intended for grant (clean copy)
May 8, 2024
Text intended for grant (version for approval)
Mar 22, 2024
(Electronic) Receipt
Mar 22, 2024
Letter accompanying subsequently filed items
Mar 22, 2024
Request for correction/amendment of the text proposed for grant sent from 01.04.2012
Mar 19, 2024
Annex to the communication about intention to grant a European patent
Mar 19, 2024
Bibliographic data of the European patent application
Mar 19, 2024
Communication about intention to grant a European patent
Mar 19, 2024
Intention to grant (signatures)
Mar 19, 2024
Text intended for grant (clean copy)
Mar 19, 2024
Text intended for grant (version for approval)
Feb 28, 2024
Examination started
Aug 25, 2023
Acknowledgement of receipt of third party observations
Aug 25, 2023
Transmittal of third party observations to applicant
Aug 23, 2023
(Electronic) Receipt
Aug 23, 2023
Letter accompanying subsequently filed items
Aug 23, 2023
Non-patent literature filed by a third party
Aug 23, 2023
Non-patent literature filed by a third party
Aug 23, 2023
Non-patent literature filed by a third party
Aug 23, 2023
Non-patent literature filed by a third party
Aug 23, 2023
Observations by third parties
Aug 23, 2023
Patent document filed by a Third party
Aug 9, 2023
Notification on forthcoming publication of bibliographic data
Jun 9, 2023
Communication regarding comments on written opinion/amendment of application/payment of claims fee
Jun 1, 2023
Priority search results copy provided by EPO
Mar 28, 2023
Information regarding early processing
Mar 22, 2023
(Electronic) Receipt
Mar 22, 2023
Request for entry into the European phase
Mar 13, 2023
Information on entry into European phase
Oct 26, 2022
Annex to International preliminary examination report
Oct 26, 2022
Annexes to the international preliminary examination report
Oct 26, 2022
Copy of the international preliminary examination report
Oct 26, 2022
International preliminary examination report
Oct 26, 2022
International preliminary examination report - free text sheet
Oct 26, 2022
International preliminary examination report - points I-VIII
Oct 26, 2022
Transmittal of International Preliminary Examination Report
Sep 22, 2022
Notification of election of EPO
Sep 13, 2022
Amendments of documents (Article 19 PCT) (without attachments)
Sep 7, 2022
Notification of receipt of demand
Aug 30, 2022
(Electronic) Receipt
Aug 30, 2022
PCT demand form
Aug 30, 2022
PCT(IPEA): Amended sheet - claims
Aug 30, 2022
PCT(IPEA): Amended sheet - claims
Aug 30, 2022
Payment of fees and costs
Aug 30, 2022
Reply to International Search Opinion
May 23, 2022
Priority document (electronically transmitted)
May 5, 2022
Copy of the international search report
May 5, 2022
Copy of the international search report
May 5, 2022
Published international application - A1
Dec 6, 2021
Notification of refund of search fee
Nov 26, 2021
ISR: cited documents
Nov 26, 2021
International Search Report - copy in English for the IB
Nov 26, 2021
Written opinion of the ISA, boxes No. I to VIII
Nov 26, 2021
Written opinion of the ISA, cover sheet
Nov 26, 2021
Written opinion of the ISA, supplemental box
Nov 16, 2021
Notification of receipt of Search copy
Nov 15, 2021
Notification of the international application number and of the international filing date
Nov 10, 2021
Request form for international application (copy for ISA/EP)
Oct 28, 2021
(Electronic) Receipt
Oct 28, 2021
Abstract
Oct 28, 2021
Claims
Oct 28, 2021
Description
Oct 28, 2021
Document concerning fees and payments
Oct 28, 2021
Drawings
Oct 28, 2021
Electronic request for grant of an International application
Oct 28, 2021
Incoming communication concerning PCT Direct

EP4237587

PRIMETALS AUSTRIA

Application Number: EP21799055A
Filing Date: Oct 28, 2021
Status: Granted And Under Opposition; Jul 26, 2024
Publication Date: Aug 28, 2024
External Links: Slate, Register , Google Patents

IP Verse

Steel Production From Iron Smelt

Patent Summary

Patent Family

Patent Oppositions (3)

Dossier Documents

EP4237587