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Cr-Mn-N Austenitic Heat-Resistant Steel And A Method For Manufacturing The Same

Patent No. EP3287540 (titled "Cr-Mn-N Austenitic Heat-Resistant Steel And A Method For Manufacturing The Same") was filed by Tianjin NEW WEI SAN Industrial on Aug 25, 2017. The application was issued on Mar 17, 2021.

Patent Summary

Patent Family

Patent Oppositions (2)

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
LKGLOBAL UK	Aug 3, 2020	INGRASSIA
LKGLOBAL UK	Aug 3, 2020	LKGLOBAL UK

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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Nov 20, 2025
Decision to maintain the European patent in amended form
Nov 20, 2025
Decision to maintain the European patent in amended form
Nov 12, 2025
(Electronic) Receipt
Nov 12, 2025
Filing of the translation of the amended claims
Nov 12, 2025
French translation of claims
Nov 12, 2025
German translation of the claims
Nov 12, 2025
Letter accompanying subsequently filed items
Nov 5, 2025
Communication of bibliographic data
Nov 5, 2025
Communication to opponent concerning maintenance
Nov 5, 2025
Communication with request to file translations
Oct 31, 2025
Maintenance of the patent with the documents specified in the final decision
Jul 25, 2025
Brief communication - Opposition proceedings
Jul 25, 2025
Brief communication - Opposition proceedings
Jul 25, 2025
Decision of the Opposition Division and instruction
Jul 25, 2025
Druckexemplar in opposition procedure
Jul 25, 2025
Grounds for the decision (Annex) - opposition
Jul 25, 2025
Interlocutory decision in opposition proceedings
Jul 25, 2025
Interlocutory decision in opposition proceedings
Jul 25, 2025
Means of redress
Feb 21, 2025
Brief communication - Opposition proceedings
Feb 21, 2025
Brief communication - Opposition proceedings
Feb 21, 2025
Communication inviting the parties to file observations
Feb 21, 2025
Communication inviting the parties to file observations
Dec 9, 2024
Brief communication - Opposition proceedings
Dec 4, 2024
(Electronic) Receipt
Dec 4, 2024
Amended description with annotations
Dec 4, 2024
Clean copy of description pages in the opposition procedure
Dec 4, 2024
Letter accompanying subsequently filed items
Dec 4, 2024
Reply to an examination report in opposition proceedings
Nov 26, 2024
Annex to the communication - opposition
Nov 26, 2024
Brief communication - Opposition proceedings
Nov 26, 2024
Brief communication - Opposition proceedings
Nov 26, 2024
Communication inviting the parties to file observations
Nov 26, 2024
Communication inviting the parties to file observations
Sep 9, 2024
Decision of the Board of Appeal
Sep 9, 2024
Decision of the Board of Appeal
Sep 9, 2024
F3032 Notification(s) of the decision
Sep 9, 2024
F3032 Notification(s) of the decision
Jul 23, 2024
F3013 Oral Proceedings: Forwarding minutes
Jul 23, 2024
F3013 Oral Proceedings: Forwarding minutes
Jul 23, 2024
F3316 Oral Proceedings: Minutes (Appellant: Opponent)
Jul 23, 2024
F3316 Oral Proceedings: Minutes (Appellant: Opponent)
May 8, 2024
(Electronic) Receipt
May 8, 2024
Letter accompanying subsequently filed items
Mar 7, 2024
F3305 Communication of the Board of Appeal (ex parte/ inter partes)
Mar 7, 2024
F3305 Communication of the Board of Appeal (ex parte/ inter partes)
Feb 19, 2024
F3345 Forwarding of submissions to parties
Feb 14, 2024
(Electronic) Receipt
Feb 14, 2024
Letter accompanying subsequently filed items
Jan 15, 2024
F3011.2 Oral Proceedings: Summons VICO
Jan 15, 2024
F3011.2 Oral Proceedings: Summons VICO
Jan 10, 2024
F3010 Oral proceedings: order for summons
Sep 28, 2023
F3345 Forwarding of submissions to parties
Sep 25, 2023
(Electronic) Receipt
Sep 25, 2023
Amended claims with annotations
Sep 25, 2023
Amended claims with annotations
Sep 25, 2023
Amended claims with annotations
Sep 25, 2023
Amended claims with annotations
Sep 25, 2023
Amended claims with annotations
Sep 25, 2023
Amended claims with annotations
Sep 25, 2023
Auxiliary request during appeals procedure - 06
Sep 25, 2023
Auxiliary request during appeals procedure - 07
Sep 25, 2023
Auxiliary request during appeals procedure - 08
Sep 25, 2023
Auxiliary request during appeals procedure - 09
Sep 25, 2023
Auxiliary request during appeals procedure - 10
Sep 25, 2023
Auxiliary request during appeals procedure - 11
Sep 25, 2023
Letter accompanying subsequently filed items
Sep 25, 2023
Reply to appeal
May 24, 2023
F3344 Setting time limit for reply/ file observations to appeal (inter partes)
May 19, 2023
(Electronic) Receipt
May 19, 2023
Letter accompanying subsequently filed items
May 19, 2023
Statement of grounds of appeal
Mar 21, 2023
Composition of the board (T)
Mar 13, 2023
F3204 Communication of the file number to the parties
Mar 13, 2023
F3204 Communication of the file number to the parties
Mar 7, 2023
(Electronic) Receipt
Mar 7, 2023
Letter accompanying subsequently filed items
Mar 7, 2023
Notice of appeal
Jan 23, 2023
Annex to the communication - opposition
Jan 23, 2023
Decision of the Opposition Division and instruction
Jan 23, 2023
Decision rejecting the opposition
Jan 23, 2023
Decision rejecting the opposition
Jan 23, 2023
Grounds for the decision (Annex) - opposition
Jan 23, 2023
Means of redress
Jan 23, 2023
Minutes of the oral proceedings (Opposition Division) - conclusion of the proceedings
Jan 23, 2023
Minutes of the oral proceedings (Opposition Division) - conclusion of the proceedings
Jan 23, 2023
Minutes of the oral proceedings (Opposition Division) - introduction of the parties
Jan 23, 2023
Provision of a copy of the minutes - opposition procedure
Jan 23, 2023
Provision of a copy of the minutes - opposition procedure
Jan 23, 2023
Transmittal of decision / summons - opposition
Jan 23, 2023
Transmittal of decision / summons - opposition
Oct 18, 2022
Information about the result of oral proceedings
Oct 11, 2022
Brief communication - Opposition proceedings
Oct 6, 2022
(Electronic) Receipt
Oct 6, 2022
Citation in opposition procedure - 012
Oct 6, 2022
Citation in opposition procedure - 013
Oct 6, 2022
Consolidated list of cited opposition documents
Oct 6, 2022
Letter accompanying subsequently filed items
Oct 6, 2022
Written submission in preparation to/during oral proceedings
Aug 26, 2022
Brief communication - Opposition proceedings
Aug 18, 2022
(Electronic) Receipt
Aug 18, 2022
Auxiliary request during Opposition procedure - 04
Aug 18, 2022
Auxiliary request during Opposition procedure - 05
Aug 18, 2022
Citation in opposition procedure - 008
Aug 18, 2022
Citation in opposition procedure - 009
Aug 18, 2022
Citation in opposition procedure - 010
Aug 18, 2022
Citation in opposition procedure - 011
Aug 18, 2022
Letter accompanying subsequently filed items
Aug 18, 2022
Written submission in preparation to/during oral proceedings
Jul 11, 2022
Brief communication - Opposition proceedings
Jul 6, 2022
Communication concerning the filing of a power of attorney
Jul 6, 2022
Communication of amended entries concerning the representative
Jun 28, 2022
(Electronic) Receipt
Jun 28, 2022
Authorisation
Jun 28, 2022
Letter accompanying subsequently filed items
Jun 28, 2022
Submission concerning change of proprietor's representative
Jun 15, 2022
Communication concerning signing of documents
Jun 7, 2022
(Electronic) Receipt
Jun 7, 2022
Authorisation
Jun 7, 2022
Letter accompanying subsequently filed items
Jun 7, 2022
Submission concerning change of proprietor's representative
Apr 21, 2022
Notification concerning the date of oral proceedings
Apr 21, 2022
Notification concerning the date of oral proceedings
Apr 20, 2022
Brief communication - Opposition proceedings
Apr 13, 2022
(Electronic) Receipt
Apr 13, 2022
Citation in opposition procedure - 006
Apr 13, 2022
Citation in opposition procedure - 007
Apr 13, 2022
Letter accompanying subsequently filed items
Apr 13, 2022
Written submission in preparation to/during oral proceedings
Mar 21, 2022
Advice of delivery
Mar 17, 2022
(Electronic) Receipt
Mar 17, 2022
Advice of delivery
Mar 17, 2022
Letter accompanying subsequently filed items
Mar 16, 2022
Advice of delivery
Mar 15, 2022
Annex to the communication - opposition
Mar 15, 2022
Information concerning oral proceedings
Mar 15, 2022
Summons to attend oral proceedings
Mar 15, 2022
Summons to attend oral proceedings
Mar 15, 2022
Transmittal of decision / summons - opposition
Mar 15, 2022
Transmittal of decision / summons - opposition
Aug 24, 2021
Brief communication - Opposition proceedings
Aug 19, 2021
(Electronic) Receipt
Aug 19, 2021
Auxiliary request during Opposition procedure
Aug 19, 2021
Auxiliary request during Opposition procedure
Aug 19, 2021
Auxiliary request during Opposition procedure
Aug 19, 2021
Auxiliary request during Opposition procedure - 01
Aug 19, 2021
Auxiliary request during Opposition procedure - 02
Aug 19, 2021
Auxiliary request during Opposition procedure - 03
Aug 19, 2021
Citation in opposition procedure - 002
Aug 19, 2021
Citation in opposition procedure - 003
Aug 19, 2021
Citation in opposition procedure - 004
Aug 19, 2021
Citation in opposition procedure - 005
Aug 19, 2021
Letter accompanying subsequently filed items
Aug 19, 2021
Reply of the patent proprietor to the notice(s) of opposition
Apr 9, 2021
Communication of a notice of opposition and request to file observations
Apr 9, 2021
Notice of further oppositions to opponent(s)
Jan 12, 2021
Rectification of designation of inventor (Legal Division)
Dec 9, 2020
(Electronic) Receipt
Dec 9, 2020
Letter accompanying subsequently filed items
Dec 9, 2020
Letter concerning the inventor
Sep 8, 2020
Rectification of designation of inventor (Legal Division)
Aug 6, 2020
Communication of a notice of opposition - first information to patent proprietor
Aug 3, 2020
(Electronic) Receipt
Aug 3, 2020
Citation in opposition procedure - 001
Aug 3, 2020
Citation in opposition procedure - 002
Aug 3, 2020
Citation in opposition procedure - 002
Aug 3, 2020
Letter accompanying subsequently filed items
Aug 3, 2020
Notice of opposition
Aug 3, 2020
Notice of opposition
Jul 27, 2020
(Electronic) Receipt
Jul 27, 2020
Letter accompanying subsequently filed items
Jul 27, 2020
Letter concerning the inventor
Jul 23, 2020
Payment submission rejected
Jul 6, 2020
Transmission of the certificate for a European patent pursuant to Rule 74 EPC
May 28, 2020
Decision to grant a European patent
May 12, 2020
(Electronic) Receipt
May 12, 2020
Filing of the translations of the claims
May 12, 2020
French translation of claims
May 12, 2020
German translation of the claims
May 12, 2020
Letter accompanying subsequently filed items
Feb 19, 2020
Annex to the communication about intention to grant a European patent
Feb 19, 2020
Bibliographic data of the European patent application
Feb 19, 2020
Communication about intention to grant a European patent
Feb 19, 2020
Intention to grant (signatures)
Feb 19, 2020
Text intended for grant (clean copy)
Feb 19, 2020
Text intended for grant (version for approval)
Jan 23, 2020
(Electronic) Receipt
Jan 23, 2020
Claims
Jan 23, 2020
Letter accompanying subsequently filed items
Jan 23, 2020
Matter concerning the application
Sep 17, 2019
(Electronic) Receipt
Sep 17, 2019
Amended claims with annotations
Sep 17, 2019
Amended claims with annotations
Sep 17, 2019
Amended description with annotations
Sep 17, 2019
Claims
Sep 17, 2019
Claims
Sep 17, 2019
Description
Sep 17, 2019
Description
Sep 17, 2019
Description
Sep 17, 2019
Letter accompanying subsequently filed items
Sep 17, 2019
Reply to communication from the Examining Division
Jun 6, 2019
Annex to the communication
Jun 6, 2019
Communication from the Examining Division
May 16, 2019
(Electronic) Receipt
May 16, 2019
Amended claims with annotations
May 16, 2019
Claims
May 16, 2019
Letter accompanying subsequently filed items
May 16, 2019
Reply to communication from the Examining Division
Jan 17, 2019
Annex to the communication
Jan 17, 2019
Communication from the Examining Division
Dec 14, 2018
Examination started
Nov 16, 2018
(Electronic) Receipt
Nov 16, 2018
Letter accompanying subsequently filed items
Nov 16, 2018
Priority search results
Nov 16, 2018
Reply to invitation to file a copy of priority search results
Oct 25, 2018
Invitation to file a copy of search results(priority)
Oct 24, 2018
Refund of fees
Oct 19, 2018
Decision to allow further processing
Oct 8, 2018
(Electronic) Receipt
Oct 8, 2018
Letter accompanying subsequently filed items
Oct 5, 2018
Application deemed to be withdrawn (non-payment of examination fee/designation fee/non-reply to Written Opinion)
Aug 28, 2018
(Electronic) Receipt
Aug 28, 2018
Amended claims filed after receipt of (European) search report
Aug 28, 2018
Amended claims filed after receipt of (European) search report
Aug 28, 2018
Amended claims with annotations
Aug 28, 2018
Amended claims with annotations
Aug 28, 2018
Amendments received before examination
Aug 28, 2018
Letter accompanying subsequently filed items
Mar 5, 2018
Invitation to confirm maintenance of the application and to correct deficiencies in the Written Opinion/amend application
Jan 31, 2018
Notification of forthcoming publication
Dec 19, 2017
Communication regarding the transmission of the European search report
Dec 19, 2017
European search opinion
Dec 19, 2017
European search report
Dec 19, 2017
Information on Search Strategy
Dec 18, 2017
Communication to designated inventor
Dec 1, 2017
(Electronic) Receipt
Dec 1, 2017
Letter accompanying subsequently filed items
Dec 1, 2017
Letter concerning the inventor
Oct 18, 2017
Communication to designated inventor
Oct 18, 2017
Communication to designated inventor
Oct 18, 2017
Communication to designated inventor
Oct 18, 2017
Communication to designated inventor
Oct 18, 2017
Communication to designated inventor
Oct 18, 2017
Communication to designated inventor
Oct 18, 2017
Communication to designated inventor
Oct 18, 2017
Communication to designated inventor
Oct 18, 2017
Communication to designated inventor
Oct 18, 2017
Communication to designated inventor
Oct 18, 2017
Communication to designated inventor
Sep 6, 2017
Letter concerning the priority
Sep 6, 2017
Priority document
Aug 25, 2017
Abstract
Aug 25, 2017
Acknowledgement of receipt of electronic submission of the request for grant of a European patent
Aug 25, 2017
Claims
Aug 25, 2017
Description
Aug 25, 2017
Designation of inventor
Aug 25, 2017
Request for grant of a European patent

EP3287540

TIANJIN NEW WEI SAN INDUSTRIAL

Application Number: EP17187909A
Filing Date: Aug 25, 2017
Status: Granted And Under Opposition; May 22, 2020
Publication Date: Mar 17, 2021
External Links: Slate, Register , Google Patents