Threaded Connection Partially In A Self-Locking Engagement

Patent No. EP3473798 (titled "Threaded Connection Partially In A Self-Locking Engagement") was filed by Nippon Steel on Oct 20, 2017. The application was issued on Jun 18, 2025.

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
HYDRIL	Dec 11, 2020	BOULT WADE TENNANT

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

EP3473798

NIPPON STEEL

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

IP Verse

Threaded Connection Partially In A Self-Locking Engagement

Patent Summary

Patent Family

Patent Oppositions

Dossier Documents

EP3473798