The patent has been granted
The patent has been granted, Grant of patent is intended, Examination is in progress, Request for examination was made, The international publication has been made, unknown
EP Register Verified
COATED STEEL SHEET AND HIGH STRENGTH PRESS HARDENED STEEL PART AND METHOD OF MANUFACTURING THE SAME
Publication No.
EP4263882
•
App No.
EP21819985
•
Filed by
ArcelorMittal
•
Filed on
2021-12-03
•
Issued/Published on
2025-10-01
Publication No.
EP4263882
A1
Application No.
EP21819985
Filed: 2021-12-03
Grant Date
2025-10-01
Mention of grant
Active Oppositions
1 Active
EPO Oppositions
Patent Abstract / Summary
Patent abstract is being processed or was not provided in English by the publishing office.
IPC Classifications
C21D1/673, C21D6/00, C21D8/02, C21D9/40, C21D9/46, C22C38/02, C22C38/04, C22C38/12, C22C38/38, C23C2/02, C23C2/12, C23C2/26, C23C2/28, C23C2/40
Priority Claims
WO 2020IB62045
Date: 2020-12-16
Designated Contracting States (38 EPC States)
AL
AT
BE
BG
CH
CY
CZ
DE
DK
EE
ES
FI
FR
GB
GR
HR
HU
IE
IS
IT
LI
LT
LU
LV
MC
MK
MT
NL
NO
PL
PT
RO
RS
SE
SI
SK
SM
TR
Parties & Representation
Applicants
ArcelorMittal
24-26 Boulevard d'Avranches, 1160 Luxembourg
LUInventors (4)
PHILIPPOT, Clément
57365 Ennery
FRLE GUILLARD, Sandra
54800 Mars La Tour
FRDUSSAUSSOIS, David
54310 Homécourt
FRSALIB, Matthieu
57283 Maizières-lès-Metz Cedex
FRRepresentatives / Agents
Lavoix
2, place d'Estienne d'Orves, 75441 Paris Cedex 09
FRPlaisant, Sophie Marie
ArcelorMittal, Research & Development Intellectual Property
FRBird & Bird LLP
Maximiliansplatz 22, 80333 München
DEKey Procedural Dates
Request-For-Examination
2023-07-17
Mention Of Grant Published
2025-10-01
First-Examination-Report-Despatched
2024-09-27
Patent Oppositions
Official opposition proceedings filed against European Patent EP4263882 under EPC Article 99.
#1
Opponent
Company
POSCO Co., Ltd
6261, Donghaean-ro, KR
Representative
Bird & Bird LLP
Filing
Date
Opposition in Progress
2026-07-01
Legal Status & Event History
Official European Patent Office legal and procedural status changes recorded for this file.
| Date | Code | Event Description | Auth |
|---|---|---|---|
| 2021-12-16 | STAA | INFORMATION ON THE STATUS OF AN EP PATENT APPLICATION OR GRANTED EP PATENT | EP |
| 2022-06-25 | STAA | INFORMATION ON THE STATUS OF AN EP PATENT APPLICATION OR GRANTED EP PATENT | EP |
| 2023-09-22 | PUAI | PUBLIC REFERENCE MADE UNDER ARTICLE 153(3) EPC TO A PUBLISHED INTERNATIONAL APPLICATION THAT HAS ENTERED THE EUROPEAN PHASE | EP |
| 2023-09-22 | STAA | INFORMATION ON THE STATUS OF AN EP PATENT APPLICATION OR GRANTED EP PATENT | EP |
| 2023-10-25 | 17P | REQUEST FOR EXAMINATION FILED | EP |
| 2023-10-25 | AK | DESIGNATED CONTRACTING STATES | EP |
| 2024-03-27 | DAX | REQUEST FOR EXTENSION OF THE EUROPEAN PATENT (DELETED) | EP |
| 2024-03-27 | RAV | REQUESTED VALIDATION STATE OF THE EUROPEAN PATENT: FEE PAID | EP |
| 2024-06-11 | TPAC | OBSERVATIONS FILED BY THIRD PARTIES | EP |
| 2024-09-27 | STAA | INFORMATION ON THE STATUS OF AN EP PATENT APPLICATION OR GRANTED EP PATENT | EP |
| 2024-10-30 | 17Q | FIRST EXAMINATION REPORT DESPATCHED | EP |
| 2025-05-22 | GRAP | DESPATCH OF COMMUNICATION OF INTENTION TO GRANT A PATENT | EP |
| 2025-05-22 | STAA | INFORMATION ON THE STATUS OF AN EP PATENT APPLICATION OR GRANTED EP PATENT | EP |
| 2025-06-25 | INTG | INTENTION TO GRANT ANNOUNCED | EP |
| 2025-08-29 | GRAA | (EXPECTED) GRANT | EP |
| 2025-08-27 | GRAS | GRANT FEE PAID | EP |
| 2025-08-29 | STAA | INFORMATION ON THE STATUS OF AN EP PATENT APPLICATION OR GRANTED EP PATENT | EP |
| 2025-09-17 | P01 | OPT-OUT OF THE COMPETENCE OF THE UNIFIED PATENT COURT (UPC) REGISTERED | EP |
| 2025-10-01 | AK | DESIGNATED CONTRACTING STATES | EP |
| 2025-10-01 | REG | REFERENCE TO A NATIONAL CODE | EP |
| 2025-10-16 | REG | REFERENCE TO A NATIONAL CODE | EP |
| 2025-10-31 | REG | REFERENCE TO A NATIONAL CODE | EP |
| 2025-11-13 | REG | REFERENCE TO A NATIONAL CODE | EP |
| 2025-12-15 | PGFP | ANNUAL FEE PAID TO NATIONAL OFFICE [ANNOUNCED VIA POSTGRANT INFORMATION FROM NATIONAL OFFICE TO EPO] | EP |
| 2025-12-23 | REG | REFERENCE TO A NATIONAL CODE | EP |
| 2025-12-24 | REG | REFERENCE TO A NATIONAL CODE | EP |
| 2025-10-22 | REG | REFERENCE TO A NATIONAL CODE | EP |
| 2026-01-08 | PGFP | ANNUAL FEE PAID TO NATIONAL OFFICE [ANNOUNCED VIA POSTGRANT INFORMATION FROM NATIONAL OFFICE TO EPO] | EP |
| 2026-01-09 | PGFP | ANNUAL FEE PAID TO NATIONAL OFFICE [ANNOUNCED VIA POSTGRANT INFORMATION FROM NATIONAL OFFICE TO EPO] | EP |
| 2026-01-13 | PGFP | ANNUAL FEE PAID TO NATIONAL OFFICE [ANNOUNCED VIA POSTGRANT INFORMATION FROM NATIONAL OFFICE TO EPO] | EP |
| 2026-01-14 | PGFP | ANNUAL FEE PAID TO NATIONAL OFFICE [ANNOUNCED VIA POSTGRANT INFORMATION FROM NATIONAL OFFICE TO EPO] | EP |
| 2026-01-15 | PGFP | ANNUAL FEE PAID TO NATIONAL OFFICE [ANNOUNCED VIA POSTGRANT INFORMATION FROM NATIONAL OFFICE TO EPO] | EP |
| 2026-01-16 | PGFP | ANNUAL FEE PAID TO NATIONAL OFFICE [ANNOUNCED VIA POSTGRANT INFORMATION FROM NATIONAL OFFICE TO EPO] | EP |
| 2026-01-19 | PGFP | ANNUAL FEE PAID TO NATIONAL OFFICE [ANNOUNCED VIA POSTGRANT INFORMATION FROM NATIONAL OFFICE TO EPO] | EP |
| 2026-01-20 | PGFP | ANNUAL FEE PAID TO NATIONAL OFFICE [ANNOUNCED VIA POSTGRANT INFORMATION FROM NATIONAL OFFICE TO EPO] | EP |
| 2026-01-23 | PGFP | ANNUAL FEE PAID TO NATIONAL OFFICE [ANNOUNCED VIA POSTGRANT INFORMATION FROM NATIONAL OFFICE TO EPO] | EP |
| 2026-01-27 | PGFP | ANNUAL FEE PAID TO NATIONAL OFFICE [ANNOUNCED VIA POSTGRANT INFORMATION FROM NATIONAL OFFICE TO EPO] | EP |
| 2026-01-28 | REG | REFERENCE TO A NATIONAL CODE | EP |
| 2026-02-13 | VSFP | ANNUAL FEE PAID TO VALIDATION STATE [ANNOUNCED VIA POSTGRANT INFORMATION FROM NATIONAL OFFICE TO EPO] | EP |
| 2026-02-16 | REG | REFERENCE TO A NATIONAL CODE | EP |
| 2026-04-10 | REG | REFERENCE TO A NATIONAL CODE | EP |
| 2026-04-10 | PGFP | ANNUAL FEE PAID TO NATIONAL OFFICE [ANNOUNCED VIA POSTGRANT INFORMATION FROM NATIONAL OFFICE TO EPO] | EP |
| 2026-04-13 | PG25 | LAPSED IN A CONTRACTING STATE [ANNOUNCED VIA POSTGRANT INFORMATION FROM NATIONAL OFFICE TO EPO] | EP |
| 2026-04-14 | PG25 | LAPSED IN A CONTRACTING STATE [ANNOUNCED VIA POSTGRANT INFORMATION FROM NATIONAL OFFICE TO EPO] | EP |
| 2026-04-17 | PG25 | LAPSED IN A CONTRACTING STATE [ANNOUNCED VIA POSTGRANT INFORMATION FROM NATIONAL OFFICE TO EPO] | EP |
| 2026-04-20 | PG25 | LAPSED IN A CONTRACTING STATE [ANNOUNCED VIA POSTGRANT INFORMATION FROM NATIONAL OFFICE TO EPO] | EP |
| 2026-04-23 | PG25 | LAPSED IN A CONTRACTING STATE [ANNOUNCED VIA POSTGRANT INFORMATION FROM NATIONAL OFFICE TO EPO] | EP |
| 2026-04-28 | PG25 | LAPSED IN A CONTRACTING STATE [ANNOUNCED VIA POSTGRANT INFORMATION FROM NATIONAL OFFICE TO EPO] | EP |
| 2026-04-30 | PG25 | LAPSED IN A CONTRACTING STATE [ANNOUNCED VIA POSTGRANT INFORMATION FROM NATIONAL OFFICE TO EPO] | EP |
| 2026-06-29 | PG25 | LAPSED IN A CONTRACTING STATE [ANNOUNCED VIA POSTGRANT INFORMATION FROM NATIONAL OFFICE TO EPO] | EP |
| 2026-07-03 | PG25 | LAPSED IN A CONTRACTING STATE [ANNOUNCED VIA POSTGRANT INFORMATION FROM NATIONAL OFFICE TO EPO] | EP |
| 2026-07-03 | PLBI | OPPOSITION FILED | EP |
| 2026-07-08 | REG | REFERENCE TO A NATIONAL CODE | EP |
| 2026-07-09 | PG25 | LAPSED IN A CONTRACTING STATE [ANNOUNCED VIA POSTGRANT INFORMATION FROM NATIONAL OFFICE TO EPO] | EP |
| 2026-07-04 | PG25 | LAPSED IN A CONTRACTING STATE [ANNOUNCED VIA POSTGRANT INFORMATION FROM NATIONAL OFFICE TO EPO] | EP |
| 2026-07-01 | REG | REFERENCE TO A NATIONAL CODE | EP |
| 2026-07-15 | PLAX | NOTICE OF OPPOSITION AND REQUEST TO FILE OBSERVATION + TIME LIMIT SENT | EP |
| 2026-07-17 | PG25 | LAPSED IN A CONTRACTING STATE [ANNOUNCED VIA POSTGRANT INFORMATION FROM NATIONAL OFFICE TO EPO] | EP |
| 2026-07-23 | REG | REFERENCE TO A NATIONAL CODE | EP |
| 2026-08-05 | 26 | OPPOSITION FILED | EP |
| 2026-08-15 | REG | REFERENCE TO A NATIONAL CODE | EP |
| 2026-08-18 | PG25 | LAPSED IN A CONTRACTING STATE [ANNOUNCED VIA POSTGRANT INFORMATION FROM NATIONAL OFFICE TO EPO] | EP |
| 2026-10-09 | PG25 | LAPSED IN A CONTRACTING STATE [ANNOUNCED VIA POSTGRANT INFORMATION FROM NATIONAL OFFICE TO EPO] | EP |
Patent & Non-Patent Citations
Cited documents and prior art referenced in search and examination reports.
Cited Patent Documents
Non-Patent Scientific Literature (NPL)
- "ISO Standard", 1 July 2017, ISO, CH, article ANONYMOUS: "ISO 3877:2017 Steels - Determination of the depth of decarburization", pages: 1 - 9, XP009567636
- "The Making, Shaping, and Treating of Steel, 11th ed.", 1 January 1998, THE MAKING, SHAPING, AND TREATING OF STEEL, 11TH ED., ISBN: 978-0-930767-02-0, article DRNEVICH R. F., C.J. MESSINA, R.J. SELINES: "Chapter 5 Production and Use of Industrial Gases for Iron and Steelmaking", pages: 291 - 310, XP093414474
* page 296 *
- WANG Z.; CAO Z.H.; WANG J.F.; HUANG M.X.: "Improving the bending toughness of Al-Si coated press-hardened steel by tailoring coating thickness", SCRIPTA MATERIALIA, ELSEVIER, AMSTERDAM., NL, vol. 192, 10 October 2020 (2020-10-10), NL , pages 19 - 25, XP086329448, ISSN: 1359-6462, DOI: 10.1016/j.scriptamat.2020.10.008
- RICHARDS, R. W.; JONES, R. D.; CLEMENTS, P. D.; CLARKE, H.: "Metallurgy of continuous hot dip aluminizing.", INTERNATIONAL MATERIALS REVIEWS, ASM INTERNATIONAL, MATERIALS PARK, US, vol. 39, no. 5, 1 January 1994 (1994-01-01), US , pages 191 - 212, XP008156586, ISSN: 0950-6608, DOI: 10.1179/imr.1994.39.5.191
- VAISSIERE L., J.P. LAURENT, A. REINHARDT: "Development of Pre-Coated Boron Steel for Applications on PSA Peugeot Citroen and RENAULT Bodies in White", SAE TECHNICAL PAPER SERIES, SAE, no. 2002-01-2048, 9 July 2002 (2002-07-09), XP093196792, ISSN: 0148-7191, DOI: 10.4271/2002-01-2048
- D11a - Preliminary opinion of the Board of Appeal in case T 1538/22
- D11b - Minutes of the Board of Appeal hearing in case T 1538/22
- YOO JISUNG; JO MIN CHUL; JO MIN CHEOL; KIM SEONGWOO; OH JINKEUN; BIAN JIAN; SOHN SEOK SU; LEE SUNGHAK: "Effects of Ti alloying on resistance to hydrogen embrittlement in (Nb+Mo)-alloyed ultra-high-strength hot-stamping steels", MATERIALS SCIENCE, ELSEVIER, AMSTERDAM, NL, vol. 791, 20 June 2020 (2020-06-20), AMSTERDAM, NL, XP086215191, ISSN: 0921-5093, DOI: 10.1016/j.msea.2020.139763
- CHO LAWRENCE, SULISTIYO DIMAS H., SEO EUN JUNG, JO KYOUNG RAE, KIM SEONG WOO, OH JIN KEUN, CHO YEOL RAE, DE COOMAN BRUNO C.: "Hydrogen absorption and embrittlement of ultra-high strength aluminized press hardening steel", MATERIALS SCIENCE, ELSEVIER, AMSTERDAM, NL, vol. 734, 1 September 2018 (2018-09-01), AMSTERDAM, NL, pages 416 - 426, XP093410152, ISSN: 0921-5093, DOI: 10.1016/j.msea.2018.08.003
- JO KYOUNG RAE; CHO LAWRENCE; SULISTIYO DIMAS H.; SEO EUN JUNG; KIM SEONG WOO; DE COOMAN BRUNO C.: "Effects of Al-Si coating and Zn coating on the hydrogen uptake and embrittlement of ultra-high strength press-hardened steel", SURFACE AND COATINGS TECHNOLOGY, ELSEVIER, NL, vol. 374, 18 June 2019 (2019-06-18), NL , pages 1108 - 1119, XP085792434, ISSN: 0257-8972, DOI: 10.1016/j.surfcoat.2019.06.047
Worldwide Patent Family
Related applications and patents in the same INPADOC worldwide family.
| Country | Publication Number | Kind | Publication Date | Action |
|---|---|---|---|---|
| EP | EP4263882A1 | A1 | 2023-10-25 | Espacenet |
| EP | EP4263882B1 | B1 | 2025-10-01 | Espacenet |
| BR | BR112023008984A2 | A2 | 2024-02-06 | Espacenet |
| CA | CA3200721A1 | A1 | 2022-06-23 | Espacenet |
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| CN | CN116568828A | A | 2023-08-08 | Espacenet |
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| EP | EP4628621A3 | A3 | 2025-12-03 | Espacenet |
| ES | ES3055855T3 | T3 | 2026-02-16 | Espacenet |
| FI | FI4263882T3 | T3 | 2025-11-13 | Espacenet |
| HU | HUE073352T2 | T2 | 2026-01-28 | Espacenet |
| JP | JP2023553672A | A | 2023-12-25 | Espacenet |
| JP | JP7665755B2 | B2 | 2025-04-21 | Espacenet |
| JP | JP2025108506A | A | 2025-07-23 | Espacenet |
| KR | KR20230100737A | A | 2023-07-05 | Espacenet |
| MA | MA62604B1 | B1 | 2025-10-31 | Espacenet |
| MX | MX2023007039A | A | 2023-06-23 | Espacenet |
| PL | PL4263882T3 | T3 | 2025-12-22 | Espacenet |
| UA | UA130032C2 | C2 | 2025-10-15 | Espacenet |
| US | US20240102138A1 | A1 | 2024-03-28 | Espacenet |
| WO | WO2022129995A1 | A1 | 2022-06-23 | Espacenet |
| WO | WO2022130101A1 | A1 | 2022-06-23 | Espacenet |
| ZA | ZA202305067B | B | 2024-06-26 | Espacenet |
Official File Inspection
EPC Art. 128 Public Dossier
Complete European Patent Register Dossier (148 Total Documents)
The full inspection file for Application EP21819985 contains 148 total documents, including all notices of opposition, proprietor counter-statements, examination communications, third-party observations, and procedural forms. Below are all major recorded procedural filings and publication specifications.
Recorded Filings & Patent Specifications
Official publication specifications, opposition filings, proprietor replies, and procedural submissions.
European Patent Specification - Granted Patent (B1)
Publication Specification
Date: 2025-10-01
Procedure: Grant
EP4263882B1
Official European Patent Register Full Dossier
Publication Specification
Date: 2025-10-01
Procedure: All Proceedings (Examination & Opposition)
EP21819985
European Patent Application with Search Report (A1)
Publication Specification
Date: 2022-06-23
Procedure: Publication
EP4263882A1
Lapse of the patent in a contracting state
Dossier Filing
Date: 2026-08-21
Procedure: Examination
0009250
Lapse of the patent in a contracting state
Dossier Filing
Date: 2026-07-24
Procedure: Examination
0009250
New entry: Communication of a notice of opposition and request to file observations + time limit
Dossier Filing
Date: 2026-07-15
Procedure: Opposition
EPIDOSNOBS2
Invitation to proprietor to file observations on the notice of opposition
Procedural Step
Date: 2026-07-15
Procedure: Opposition
OBSO
Lapse of the patent in a contracting state
Dossier Filing
Date: 2026-07-10
Procedure: Examination
0009250
Lapse of the patent in a contracting state
Dossier Filing
Date: 2026-07-03
Procedure: Examination
0009250
Opposition filed
Dossier Filing
Date: 2026-07-03
Procedure: Opposition
0009260
Lapse of the patent in a contracting state
Dossier Filing
Date: 2026-05-01
Procedure: Examination
0009250
Lapse of the patent in a contracting state
Dossier Filing
Date: 2026-04-24
Procedure: Examination
0009250
Lapse of the patent in a contracting state
Dossier Filing
Date: 2026-04-17
Procedure: Examination
0009250
Change - divisional application(s)
Dossier Filing
Date: 2025-08-29
Procedure: Examination
0008199DANR
(Expected) grant
Dossier Filing
Date: 2025-08-29
Procedure: Grant
0009210
New entry: Payment of fee for grant
Dossier Filing
Date: 2025-08-27
Procedure: Grant
EPIDOSNIGR3
New entry: Payment of fee for publishing/printing
Dossier Filing
Date: 2025-08-27
Procedure: Examination
EPIDOSNIGR5
New entry: Receipt of the translation of the claim(s)
Dossier Filing
Date: 2025-08-27
Procedure: Examination
EPIDOSNIGR7
Change - representative
Dossier Filing
Date: 2025-06-21
Procedure: Examination
EPIDOS FREP
Intention to grant the patent
Procedural Step
Date: 2025-05-23
Procedure: Grant
IGRA
New entry: Communication of intention to grant a patent
Dossier Filing
Date: 2025-05-22
Procedure: Grant
EPIDOSNIGR1
New entry: Reply to examination report
Dossier Filing
Date: 2025-02-01
Procedure: Examination
EPIDOSNEXR3
Change: Despatch of examination report + time limit
Dossier Filing
Date: 2025-01-17
Procedure: Examination
EPIDOSCEXR2
New entry: Renewal fee paid
Dossier Filing
Date: 2024-12-20
Procedure: Examination
EPIDOSNRFE2
Renewal fee payment
Procedural Step
Date: 2024-12-19
Procedure: Examination
RFEE
New entry: Despatch of examination report + time limit
Dossier Filing
Date: 2024-09-28
Procedure: Examination
EPIDOSNEXR2
First examination report
Dossier Filing
Date: 2024-09-27
Procedure: Examination
0009185
Communication from the examining division
Procedural Step
Date: 2024-09-27
Procedure: Examination
EXRE
New entry: Observations by third parties
Dossier Filing
Date: 2024-06-11
Procedure: Examination
EPIDOSNTIPA
Observations by a third party
Procedural Step
Date: 2024-06-07
Procedure: Examination
TIPA
Change - extension states
Dossier Filing
Date: 2024-02-23
Procedure: Examination
0009199EXPT
Change: Validation states
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Date: 2024-02-23
Procedure: Examination
0009199VAPT
Amendment by applicant
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Date: 2024-02-06
Procedure: Examination
EPIDOS ABEX
Amendments
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Date: 2024-02-06
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ABEX
New entry: Renewal fee paid
Dossier Filing
Date: 2023-12-19
Procedure: Examination
EPIDOSNRFE2
Renewal fee payment
Procedural Step
Date: 2023-12-19
Procedure: Examination
RFEE
The date on which the examining division becomes responsible, has been established
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Date: 2023-09-22
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EPIDOSNEXAM52
Publication in section I.1 EP Bulletin
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Date: 2023-09-22
Procedure: Examination
0009012
Request for examination filed
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Date: 2023-09-22
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0009171
PCT data prior to European publication
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Date: 2023-08-28
Procedure: Examination
EPIDOS PCT
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Date: 2023-08-02
Procedure: Examination
EPIDOS FREP
PCT data prior to European publication
Dossier Filing
Date: 2023-07-18
Procedure: Examination
EPIDOS PCT
New entry: Fee payment for validation state
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Date: 2023-07-18
Procedure: Examination
EPIDOSNVAP2
Payment of national basic fee
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Date: 2023-07-17
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FFEE
Payment of the first designation fee
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Date: 2023-07-17
Procedure: Examination
DEST
Payment of the fee for examination
Procedural Step
Date: 2023-07-17
Procedure: Examination
EXAM_PCT
Validation of the patent
Procedural Step
Date: 2023-07-17
Procedure: Examination
VAPT
Date on which the examining division has become responsible
Procedural Step
Date: 2023-07-17
Procedure: Examination
EXAM52
PCT data prior to European publication
Dossier Filing
Date: 2023-05-08
Procedure: Examination
EPIDOS PCT
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Date: 2023-05-05
Procedure: Examination
EPIDOS FREP
PCT data prior to European publication
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Date: 2023-05-05
Procedure: Examination
EPIDOS PCT
PCT data prior to European publication
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Date: 2022-06-25
Procedure: Examination
EPIDOS PCT
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Date: 2022-06-25
Procedure: Examination
EPIDOSNWIAI
PCT data prior to European publication
Dossier Filing
Date: 2021-12-16
Procedure: Examination
EPIDOS PCT
Extension of the patent
Procedural Step
Procedure: Examination
EXPT
Language of the procedure
Procedural Step
Procedure: Examination
PROL
International searching authority
Procedural Step
Procedure: Examination
ISAT