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Threaded Connection Partially In A Self-Locking Engagement - EP3473798

The patent EP3473798 was granted to Nippon Steel on Jun 18, 2025. The application was originally filed on Oct 20, 2017 under application number EP17306444A. The patent is currently recorded with a legal status of "Patent Maintained As Amended".

EP3473798

NIPPON STEEL

Application Number: EP17306444A
Filing Date: Oct 20, 2017
Status: Patent Maintained As Amended; May 16, 2025
Grant Date: Jun 18, 2025
External Links: Slate, Register, Google Patents

Patent Summary

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Patent Oppositions

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
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HYDRIL	Dec 11, 2020	BOULT WADE TENNANT	ADMISSIBLE

Patent Citations (26) New

Patent citations refer to prior patents cited during different phases such as opposition or international search.

Citation Phase	Publication Number	Publication Link
DESCRIPTION	US2011278838
DESCRIPTION	US7661728
DESCRIPTION	USRE30647E
DESCRIPTION	USRE34467E
OPPOSITION	DE4345119
OPPOSITION	US2006145477
OPPOSITION	US2006145480
OPPOSITION	US2006261595
OPPOSITION	US2008054633
OPPOSITION	US2011278838
OPPOSITION	US2014203556
OPPOSITION	US2016186899
OPPOSITION	US2016208962
OPPOSITION	US5338074
OPPOSITION	US6158785
OPPOSITION	US6206436
OPPOSITION	US7475917
OPPOSITION	US7828337
OPPOSITION	US7850211
OPPOSITION	WO2007149673
OPPOSITION	WO2008116891
OPPOSITION	WO2011060894
OPPOSITION	WO2017024208
SEARCH	US2011278838
SEARCH	US2016186899
SEARCH	US2016208962

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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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May 22, 2025
Decision to maintain the European patent in amended form
OPPO
May 22, 2025
Decision to maintain the European patent in amended form
OPPO
May 6, 2025
(Electronic) Receipt
OPPO
May 6, 2025
Description
OPPO
May 6, 2025
French translation of claims
OPPO
May 6, 2025
German translation of the claims
OPPO
May 6, 2025
Letter accompanying subsequently filed items
OPPO
Mar 6, 2025
Communication of bibliographic data
OPPO
Mar 6, 2025
Communication to opponent concerning maintenance
OPPO
Mar 6, 2025
Communication with request to file translations
OPPO
Mar 5, 2025
Refund of fees
Appeal
Mar 3, 2025
Maintenance of the patent with the documents specified in the final decision
OPPO
Feb 26, 2025
(Electronic) Receipt
Appeal
Feb 26, 2025
F3014 Oral Proceedings: Order cancelling/postponing
Appeal
Feb 26, 2025
F3017 Oral Proceedings: Notification of cancellation/postponing
Appeal
Feb 26, 2025
F3017 Oral Proceedings: Notification of cancellation/postponing
Appeal
Feb 26, 2025
F3324 Closure of the appeal proceedings: withdrawal of the appeal/ application/ opposition
Appeal
Feb 26, 2025
F3324 Closure of the appeal proceedings: withdrawal of the appeal/ application/ opposition
Appeal
Feb 26, 2025
F3345 Forwarding of submissions to parties
Appeal
Feb 26, 2025
Letter accompanying subsequently filed items
Appeal
Feb 26, 2025
Withdrawal of an appeal
Appeal
Feb 25, 2025
(Electronic) Receipt
Appeal
Feb 25, 2025
Letter accompanying subsequently filed items
Appeal
Feb 25, 2025
Letter dealing with oral proceedings during the appeal procedure
Appeal
Jan 30, 2025
Oral proceedings: change of venue
Appeal
Jan 30, 2025
Oral proceedings: change of venue
Appeal
Nov 15, 2024
F3305 Communication of the Board of Appeal (ex parte/ inter partes)
Appeal
Nov 15, 2024
F3305 Communication of the Board of Appeal (ex parte/ inter partes)
Appeal
Nov 15, 2024
F3350 Communication regarding oral proceedings (art. 15 Rules of Procedure of the Boards of Appeal)
Appeal
Aug 29, 2024
F3011.1 Oral Proceedings: summons
Appeal
Jul 11, 2024
F3011.1 Oral Proceedings: summons
Appeal
Jul 11, 2024
F3011.1 Oral Proceedings: summons
Appeal
Jul 8, 2024
Composition of the board (T)
Appeal
Jul 8, 2024
F3010 Oral proceedings: order for summons
Appeal
Jun 12, 2024
F3056 Communication: Change of Board due to the technical nature of the appeal
Appeal
Jun 12, 2024
F3056 Communication: Change of Board due to the technical nature of the appeal
Appeal
Jun 7, 2024
F3313 Order: change of Board due to the technical aspects of the appeal
Appeal
Mar 6, 2024
F3345 Forwarding of submissions to parties
Appeal
Mar 1, 2024
(Electronic) Receipt
Appeal
Mar 1, 2024
Letter accompanying subsequently filed items
Appeal
Mar 1, 2024
Letter relating to Appeal Procedure
Appeal
Oct 17, 2023
F3345 Forwarding of submissions to parties
Appeal
Oct 12, 2023
(Electronic) Receipt
Appeal
Oct 12, 2023
Letter accompanying subsequently filed items
Appeal
Oct 12, 2023
Letter relating to Appeal Procedure
Appeal
Oct 12, 2023
Reply to appeal
Appeal
Jun 2, 2023
F3344 Setting time limit for reply/ file observations to appeal (inter partes)
Appeal
May 26, 2023
(Electronic) Receipt
Appeal
May 26, 2023
(Electronic) Receipt
Appeal
May 26, 2023
Amended claims with annotations
Appeal
May 26, 2023
Amended claims with annotations
Appeal
May 26, 2023
Amended claims with annotations
Appeal
May 26, 2023
Auxiliary request during appeals procedure - 02
Appeal
May 26, 2023
Auxiliary request during appeals procedure - 03
Appeal
May 26, 2023
Auxiliary request during appeals procedure - 04
Appeal
May 26, 2023
Letter accompanying subsequently filed items
Appeal
May 26, 2023
Letter accompanying subsequently filed items
Appeal
May 26, 2023
Main request during appeals procedure
Appeal
May 26, 2023
Statement of grounds of appeal
Appeal
Mar 30, 2023
F3204 Communication of the file number to the parties
Appeal
Mar 30, 2023
F3204 Communication of the file number to the parties
Appeal
Mar 27, 2023
(Electronic) Receipt
Appeal
Mar 27, 2023
Letter accompanying subsequently filed items
Appeal
Mar 27, 2023
Notice of appeal
Appeal
Jan 17, 2023
Annex to the communication - opposition
OPPO
Jan 17, 2023
Decision of the Opposition Division
OPPO
Jan 17, 2023
Druckexemplar in opposition procedure
OPPO
Jan 17, 2023
Grounds for the decision (Annex) - opposition
OPPO
Jan 17, 2023
Interlocutory decision in opposition proceedings
OPPO
Jan 17, 2023
Interlocutory decision in opposition proceedings
OPPO
Jan 17, 2023
Means of redress
OPPO
Jan 17, 2023
Minutes of the oral proceedings (Opposition Division) - conclusion of the proceedings
OPPO
Jan 17, 2023
Minutes of the oral proceedings (Opposition Division) - conclusion of the proceedings
OPPO
Jan 17, 2023
Minutes of the oral proceedings (Opposition Division) - introduction of the parties
OPPO
Jan 17, 2023
Provision of a copy of the minutes - opposition procedure
OPPO
Jan 17, 2023
Provision of a copy of the minutes - opposition procedure
OPPO
Jan 17, 2023
Scanned annex to a communication - opposition procedure
OPPO
Jan 17, 2023
Transmittal of decision / summons - opposition
OPPO
Jan 17, 2023
Transmittal of decision / summons - opposition
OPPO
Dec 6, 2022
Information about the result of oral proceedings
OPPO
Nov 15, 2022
Brief communication - Opposition proceedings
OPPO
Nov 9, 2022
(Electronic) Receipt
OPPO
Nov 9, 2022
Letter accompanying subsequently filed items
OPPO
Nov 9, 2022
Notification concerning the date of oral proceedings
OPPO
Nov 9, 2022
Request for interpreters during oral proceedings
OPPO
Oct 28, 2022
Brief communication - Opposition proceedings
OPPO
Oct 28, 2022
Communication concerning the filing of a power of attorney
OPPO
Oct 28, 2022
Communication of amended entries concerning the representative
OPPO
Oct 21, 2022
(Electronic) Receipt
OPPO
Oct 21, 2022
Annexes in respect of a client data request
OPPO
Oct 21, 2022
Letter accompanying subsequently filed items
OPPO
Oct 21, 2022
Miscellaneous requests concerning client data
OPPO
Oct 17, 2022
Brief communication to applicant/representative (Legal Division)
OPPO
Oct 12, 2022
Brief communication - Opposition proceedings
OPPO
Oct 11, 2022
Brief communication - Opposition proceedings
OPPO
Oct 6, 2022
(Electronic) Receipt
OPPO
Oct 6, 2022
(Electronic) Receipt
OPPO
Oct 6, 2022
Authorisation
OPPO
Oct 6, 2022
Auxiliary request during Opposition procedure
OPPO
Oct 6, 2022
Auxiliary request during Opposition procedure - 13
OPPO
Oct 6, 2022
Citation in opposition procedure - 004
OPPO
Oct 6, 2022
Consolidated list of cited opposition documents
OPPO
Oct 6, 2022
Consolidated list of cited opposition documents
OPPO
Oct 6, 2022
Letter accompanying subsequently filed items
OPPO
Oct 6, 2022
Letter accompanying subsequently filed items
OPPO
Oct 6, 2022
Written submission in preparation to/during oral proceedings
OPPO
Oct 6, 2022
Written submission in preparation to/during oral proceedings
OPPO
Apr 28, 2022
Notification concerning the date of oral proceedings
OPPO
Apr 28, 2022
Notification concerning the date of oral proceedings
OPPO
Dec 15, 2021
Document concerning representation
Search/Exam
Dec 2, 2021
Advice of delivery
OPPO
Nov 5, 2021
Brief communication - Opposition proceedings
OPPO
Oct 29, 2021
(Electronic) Receipt
OPPO
Oct 29, 2021
Advice of delivery
OPPO
Oct 29, 2021
Request for interpreters during oral proceedings
OPPO
Oct 27, 2021
Annex to the communication - opposition
OPPO
Oct 27, 2021
Information concerning oral proceedings
OPPO
Oct 27, 2021
Summons to attend oral proceedings
OPPO
Oct 27, 2021
Summons to attend oral proceedings
OPPO
Oct 27, 2021
Transmittal of decision / summons - opposition
OPPO
Oct 27, 2021
Transmittal of decision / summons - opposition
OPPO
Jul 28, 2021
Brief communication - Opposition proceedings
OPPO
Jul 21, 2021
(Electronic) Receipt
OPPO
Jul 21, 2021
Auxiliary request during Opposition procedure
OPPO
Jul 21, 2021
Auxiliary request during Opposition procedure
OPPO
Jul 21, 2021
Auxiliary request during Opposition procedure
OPPO
Jul 21, 2021
Auxiliary request during Opposition procedure
OPPO
Jul 21, 2021
Auxiliary request during Opposition procedure
OPPO
Jul 21, 2021
Auxiliary request during Opposition procedure
OPPO
Jul 21, 2021
Auxiliary request during Opposition procedure
OPPO
Jul 21, 2021
Auxiliary request during Opposition procedure
OPPO
Jul 21, 2021
Auxiliary request during Opposition procedure
OPPO
Jul 21, 2021
Auxiliary request during Opposition procedure
OPPO
Jul 21, 2021
Auxiliary request during Opposition procedure
OPPO
Jul 21, 2021
Auxiliary request during Opposition procedure
OPPO
Jul 21, 2021
Auxiliary request during Opposition procedure - 01
OPPO
Jul 21, 2021
Auxiliary request during Opposition procedure - 02
OPPO
Jul 21, 2021
Auxiliary request during Opposition procedure - 03
OPPO
Jul 21, 2021
Auxiliary request during Opposition procedure - 04
OPPO
Jul 21, 2021
Auxiliary request during Opposition procedure - 05
OPPO
Jul 21, 2021
Auxiliary request during Opposition procedure - 06
OPPO
Jul 21, 2021
Auxiliary request during Opposition procedure - 07
OPPO
Jul 21, 2021
Auxiliary request during Opposition procedure - 08
OPPO
Jul 21, 2021
Auxiliary request during Opposition procedure - 09
OPPO
Jul 21, 2021
Auxiliary request during Opposition procedure - 10
OPPO
Jul 21, 2021
Auxiliary request during Opposition procedure - 11
OPPO
Jul 21, 2021
Auxiliary request during Opposition procedure - 12
OPPO
Jul 21, 2021
Letter accompanying subsequently filed items
OPPO
Jul 21, 2021
Reply of the patent proprietor to the notice(s) of opposition
OPPO
May 7, 2021
Brief communication - Opposition proceedings
OPPO
May 7, 2021
Grant of extension of time limit (opposition procedure)
OPPO
May 4, 2021
Communication concerning the filing of a power of attorney
OPPO
May 4, 2021
Communication of amended entries concerning the representative
OPPO
Apr 27, 2021
(Electronic) Receipt
OPPO
Apr 27, 2021
Letter accompanying subsequently filed items
OPPO
Apr 27, 2021
Request for extension of time limit
OPPO
Feb 12, 2021
Brief communication - Opposition proceedings
OPPO
Feb 8, 2021
(Electronic) Receipt
OPPO
Feb 8, 2021
Citation in opposition procedure - 020
OPPO
Feb 8, 2021
Citation in opposition procedure - 021
OPPO
Feb 8, 2021
Letter accompanying subsequently filed items
OPPO
Feb 8, 2021
Letter regarding the opposition procedure (no time limit)
OPPO
Jan 26, 2021
Brief communication - Opposition proceedings
OPPO
Jan 26, 2021
Communication of amended entries
OPPO
Jan 20, 2021
(Electronic) Receipt
OPPO
Jan 20, 2021
Letter accompanying subsequently filed items
OPPO
Jan 20, 2021
Request for correction of client data
OPPO
Jan 12, 2021
Communication of a notice of opposition and request to file observations
OPPO
Jan 12, 2021
Notice of further oppositions to opponent(s)
OPPO
Dec 17, 2020
Communication of a notice of opposition - first information to patent proprietor
OPPO
Dec 11, 2020
(Electronic) Receipt
OPPO
Dec 11, 2020
Citation in opposition procedure - 001
OPPO
Dec 11, 2020
Citation in opposition procedure - 002
OPPO
Dec 11, 2020
Citation in opposition procedure - 003
OPPO
Dec 11, 2020
Citation in opposition procedure - 004
OPPO
Dec 11, 2020
Citation in opposition procedure - 005
OPPO
Dec 11, 2020
Citation in opposition procedure - 006
OPPO
Dec 11, 2020
Citation in opposition procedure - 007
OPPO
Dec 11, 2020
Citation in opposition procedure - 008
OPPO
Dec 11, 2020
Citation in opposition procedure - 009
OPPO
Dec 11, 2020
Citation in opposition procedure - 010
OPPO
Dec 11, 2020
Citation in opposition procedure - 011
OPPO
Dec 11, 2020
Citation in opposition procedure - 012
OPPO
Dec 11, 2020
Citation in opposition procedure - 013
OPPO
Dec 11, 2020
Citation in opposition procedure - 014
OPPO
Dec 11, 2020
Citation in opposition procedure - 015
OPPO
Dec 11, 2020
Citation in opposition procedure - 016
OPPO
Dec 11, 2020
Citation in opposition procedure - 017
OPPO
Dec 11, 2020
Citation in opposition procedure - 018
OPPO
Dec 11, 2020
Citation in opposition procedure - 019
OPPO
Dec 11, 2020
Notice of opposition
OPPO
Dec 11, 2020
Notice of opposition
OPPO
Dec 11, 2020
Notice of opposition
OPPO
Mar 23, 2020
Transmission of the certificate for a European patent pursuant to Rule 74 EPC
Search/Exam
Feb 13, 2020
Decision to grant a European patent
Search/Exam
Jan 30, 2020
(Electronic) Receipt
Search/Exam
Jan 30, 2020
Filing of the translations of the claims
Search/Exam
Jan 30, 2020
French translation of claims
Search/Exam
Jan 30, 2020
German translation of the claims
Search/Exam
Jan 30, 2020
Letter accompanying subsequently filed items
Search/Exam
Jan 9, 2020
Bibliographic data of the European patent application
Search/Exam
Jan 9, 2020
Communication about intention to grant a European patent
Search/Exam
Jan 9, 2020
Intention to grant (signatures)
Search/Exam
Jan 9, 2020
Text intended for grant (clean copy)
Search/Exam
Jan 9, 2020
Text intended for grant (version for approval)
Search/Exam
Nov 14, 2019
Examination started
Search/Exam
Aug 28, 2019
(Electronic) Receipt
Search/Exam
Aug 28, 2019
Letter accompanying subsequently filed items
Search/Exam
Aug 28, 2019
Reply to Written Opinion prepared by the EPO
Search/Exam
Aug 26, 2019
(Electronic) Receipt
Search/Exam
Aug 26, 2019
Letter accompanying subsequently filed items
Search/Exam
May 17, 2019
Communication of the registration of a transfer or change of name and/or address
Search/Exam
Apr 29, 2019
Reminder period for payment of examination fee/designation fee and correction of deficiencies in Written Opinion/amendment
Search/Exam
Mar 27, 2019
Notification of forthcoming publication
Search/Exam
Aug 27, 2018
Communication to designated inventor
Search/Exam
Aug 27, 2018
Communication to designated inventor
Search/Exam
Aug 20, 2018
(Electronic) Receipt
Search/Exam
Aug 20, 2018
Designation of inventor
Search/Exam
Aug 20, 2018
Letter accompanying subsequently filed items
Search/Exam
Apr 11, 2018
Communication regarding the transmission of the European search report
Search/Exam
Apr 11, 2018
European search opinion
Search/Exam
Apr 11, 2018
European search report
Search/Exam
Apr 11, 2018
Information on Search Strategy
Search/Exam
Mar 27, 2018
Search started
Search/Exam
Nov 24, 2017
Deficiency in designation of inventor
Search/Exam
Nov 2, 2017
Acknowledgement of receipt from National Office - R35(4)
Search/Exam
Oct 20, 2017
Abstract
Search/Exam
Oct 20, 2017
Acknowledgement of receipt of electronic submission of the request for grant of a European patent
Search/Exam
Oct 20, 2017
Claims
Search/Exam
Oct 20, 2017
Description
Search/Exam
Oct 20, 2017
Drawings
Search/Exam
Oct 20, 2017
Request for grant of a European patent
Search/Exam