Corrosion Resistant Equipment For Oil And/Or Gas Applications

Patent No. EP2794771 (titled "Corrosion Resistant Equipment For Oil And/Or Gas Applications") was filed by Tenaris Connections on Dec 21, 2011. The application was issued on May 21, 2025.

Patent Family

Statuses, jurisdictions and citation links are shared on request.

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
VALLOUREC OIL AND GAS FRANCE	Aug 23, 2017	CASALONGA

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

Apr 25, 2025
Decision to maintain the European patent in amended form
Apr 25, 2025
Decision to maintain the European patent in amended form
Apr 11, 2025
(Electronic) Receipt
Apr 11, 2025
Filing of the translation of the amended claims
Apr 11, 2025
French translation of claims
Apr 11, 2025
German translation of the claims
Apr 11, 2025
Letter accompanying subsequently filed items
Jan 23, 2025
Communication of bibliographic data
Jan 23, 2025
Communication to opponent concerning maintenance
Jan 23, 2025
Communication with request to file translations
Jan 16, 2025
Maintenance of the patent with the documents specified in the final decision
Oct 1, 2024
Brief communication - Opposition proceedings
Oct 1, 2024
Brief communication - Opposition proceedings
Oct 1, 2024
Decision of the Opposition Division and instruction
Oct 1, 2024
Druckexemplar in opposition procedure
Oct 1, 2024
Grounds for the decision (Annex) - opposition
Oct 1, 2024
Interlocutory decision in opposition proceedings
Oct 1, 2024
Interlocutory decision in opposition proceedings
Oct 1, 2024
Means of redress
Mar 26, 2024
Annex to the communication - opposition
Mar 26, 2024
Brief communication - Opposition proceedings
Mar 26, 2024
Brief communication - Opposition proceedings
Mar 26, 2024
Communication inviting the parties to file observations
Mar 26, 2024
Communication inviting the parties to file observations
Jan 23, 2024
Brief communication - Opposition proceedings
Jan 18, 2024
(Electronic) Receipt
Jan 18, 2024
Amended description with annotations
Jan 18, 2024
Description
Jan 18, 2024
Letter accompanying subsequently filed items
Jan 18, 2024
Reply to an examination report in opposition proceedings
Nov 22, 2023
Annex to the communication - opposition
Nov 22, 2023
Brief communication - Opposition proceedings
Nov 22, 2023
Brief communication - Opposition proceedings
Nov 22, 2023
Communication inviting the parties to file observations
Nov 22, 2023
Communication inviting the parties to file observations
Oct 4, 2023
F3936 Acknowledgement of receipt Board of Appeal
Sep 29, 2023
Decision of the Board of Appeal
Sep 29, 2023
F3032 Notification(s) of the decision
Sep 29, 2023
F3032 Notification(s) of the decision
Jul 5, 2023
F3013 Oral Proceedings: Forwarding minutes
Jul 5, 2023
F3013 Oral Proceedings: Forwarding minutes
Jul 5, 2023
F3317 Oral Proceedings: Minutes (Appellant: Proprietor + Opponent)
May 25, 2023
F3305 Communication of the Board of Appeal (ex parte/ inter partes)
May 25, 2023
F3305 Communication of the Board of Appeal (ex parte/ inter partes)
May 3, 2023
F3345 Forwarding of submissions to parties
May 1, 2023
(Electronic) Receipt
May 1, 2023
Letter accompanying subsequently filed items
May 1, 2023
Request for interpreters during oral proceedings
Apr 26, 2023
F3345 Forwarding of submissions to parties
Apr 21, 2023
(Electronic) Receipt
Apr 21, 2023
(Electronic) Receipt
Apr 21, 2023
Letter accompanying subsequently filed items
Apr 21, 2023
Request for interpreters during oral proceedings
Mar 27, 2023
F3936 Acknowledgement of receipt Board of Appeal
Mar 24, 2023
Oral proceedings: change of venue
Mar 24, 2023
Oral proceedings: change of venue
Mar 22, 2023
F3345 Forwarding of submissions to parties
Mar 21, 2023
(Electronic) Receipt
Mar 21, 2023
Letter accompanying subsequently filed items
Mar 21, 2023
Letter dealing with oral proceedings during the appeal procedure
Mar 9, 2023
F3345 Forwarding of submissions to parties
Mar 7, 2023
(Electronic) Receipt
Mar 7, 2023
Letter accompanying subsequently filed items
Mar 7, 2023
Letter dealing with oral proceedings during the appeal procedure
Feb 22, 2023
F3004 Communication of the Registry
Feb 22, 2023
F3004 Communication of the Registry
Jun 13, 2022
Advice of delivery
Jun 9, 2022
F3011.1 Oral Proceedings: summons
Jun 9, 2022
F3011.1 Oral Proceedings: summons
Jun 3, 2022
F3010 Oral proceedings: order for summons
Jun 2, 2022
F3303.16 Change of composition of the Board (T)
May 11, 2022
F3057 Communication: Change of responsibility of a Board of Appeal
May 11, 2022
F3057 Communication: Change of responsibility of a Board of Appeal
Mar 30, 2021
Document concerning representation
Mar 30, 2021
Letter accompanying subsequently filed items
Mar 26, 2021
F3345 Forwarding of submissions to parties
Mar 22, 2021
(Electronic) Receipt
Mar 22, 2021
Letter accompanying subsequently filed items
Mar 22, 2021
Letter relating to Appeal Procedure
Dec 2, 2020
F3345 Forwarding of submissions to parties
Nov 27, 2020
(Electronic) Receipt
Nov 27, 2020
Letter accompanying subsequently filed items
Nov 27, 2020
Letter relating to Appeal Procedure
Jan 20, 2020
Composition of the board (T)
Jan 15, 2020
F3345 Forwarding of submissions to parties
Jan 9, 2020
(Electronic) Receipt
Jan 9, 2020
F3345 Forwarding of submissions to parties
Jan 9, 2020
Letter accompanying subsequently filed items
Jan 9, 2020
Reply to appeal
Dec 31, 2019
(Electronic) Receipt
Dec 31, 2019
Amended claims with annotations
Dec 31, 2019
Amended claims with annotations
Dec 31, 2019
Amended claims with annotations
Dec 31, 2019
Amended claims with annotations
Dec 31, 2019
Amended claims with annotations
Dec 31, 2019
Amended claims with annotations
Dec 31, 2019
Amended claims with annotations
Dec 31, 2019
Amended claims with annotations
Dec 31, 2019
Amended claims with annotations
Dec 31, 2019
Amended claims with annotations
Dec 31, 2019
Amended claims with annotations
Dec 31, 2019
Amended claims with annotations
Dec 31, 2019
Amended claims with annotations
Dec 31, 2019
Amended claims with annotations
Dec 31, 2019
Amended claims with annotations
Dec 31, 2019
Cited document during appeal procedure
Dec 31, 2019
Cited document during appeal procedure
Dec 31, 2019
Cited document during appeal procedure
Dec 31, 2019
Claims
Dec 31, 2019
Claims
Dec 31, 2019
Claims
Dec 31, 2019
Claims
Dec 31, 2019
Claims
Dec 31, 2019
Claims
Dec 31, 2019
Claims
Dec 31, 2019
Claims
Dec 31, 2019
Claims
Dec 31, 2019
Claims
Dec 31, 2019
Claims
Dec 31, 2019
Claims
Dec 31, 2019
Claims
Dec 31, 2019
Claims
Dec 31, 2019
Claims
Dec 31, 2019
Letter accompanying subsequently filed items
Dec 31, 2019
Reply to appeal
Aug 30, 2019
F3344 Setting time limit for reply/ file observations to appeal (inter partes)
Aug 30, 2019
F3344 Setting time limit for reply/ file observations to appeal (inter partes)
Aug 27, 2019
(Electronic) Receipt
Aug 27, 2019
(Electronic) Receipt
Aug 27, 2019
Amended claims with annotations
Aug 27, 2019
Amended claims with annotations
Aug 27, 2019
Amended claims with annotations
Aug 27, 2019
Amended claims with annotations
Aug 27, 2019
Amended claims with annotations
Aug 27, 2019
Amended claims with annotations
Aug 27, 2019
Amended claims with annotations
Aug 27, 2019
Amended claims with annotations
Aug 27, 2019
Amended claims with annotations
Aug 27, 2019
Amended claims with annotations
Aug 27, 2019
Amended claims with annotations
Aug 27, 2019
Amended claims with annotations
Aug 27, 2019
Amended claims with annotations
Aug 27, 2019
Amended claims with annotations
Aug 27, 2019
Auxiliary request during appeals procedure - 01
Aug 27, 2019
Auxiliary request during appeals procedure - 02
Aug 27, 2019
Auxiliary request during appeals procedure - 03
Aug 27, 2019
Auxiliary request during appeals procedure - 04
Aug 27, 2019
Auxiliary request during appeals procedure - 05
Aug 27, 2019
Auxiliary request during appeals procedure - 06
Aug 27, 2019
Auxiliary request during appeals procedure - 07
Aug 27, 2019
Auxiliary request during appeals procedure - 08
Aug 27, 2019
Auxiliary request during appeals procedure - 09
Aug 27, 2019
Auxiliary request during appeals procedure - 10
Aug 27, 2019
Auxiliary request during appeals procedure - 11
Aug 27, 2019
Auxiliary request during appeals procedure - 12
Aug 27, 2019
Auxiliary request during appeals procedure - 13
Aug 27, 2019
Auxiliary request during appeals procedure - 14
Aug 27, 2019
Letter accompanying subsequently filed items
Aug 27, 2019
Letter accompanying subsequently filed items
Aug 27, 2019
Statement of grounds of appeal
Aug 27, 2019
Statement of grounds of appeal
Jul 4, 2019
F3204 Communication of the file number to the parties
Jul 4, 2019
F3204 Communication of the file number to the parties
Jul 4, 2019
F3204 Communication of the file number to the parties
Jul 4, 2019
F3204 Communication of the file number to the parties
Jun 27, 2019
(Electronic) Receipt
Jun 27, 2019
Letter accompanying subsequently filed items
Jun 27, 2019
Notice of appeal
Jun 27, 2019
Processing of an appeal
Jun 26, 2019
(Electronic) Receipt
Jun 26, 2019
Letter accompanying subsequently filed items
Jun 26, 2019
Notice of appeal
May 2, 2019
Advice of delivery
Apr 24, 2019
Advice of delivery
Apr 23, 2019
Advice of delivery
Apr 18, 2019
Advice of delivery
Apr 17, 2019
Acknowledgement of a document
Apr 17, 2019
Acknowledgement of a document
Apr 17, 2019
Annex to the communication - opposition
Apr 17, 2019
Decision of the Opposition Division and instruction
Apr 17, 2019
Druckexemplar in opposition procedure
Apr 17, 2019
Grounds for the decision (Annex) - opposition
Apr 17, 2019
Interlocutory decision in opposition proceedings
Apr 17, 2019
Internal form - Opposition/addressees
Apr 17, 2019
Internal form - Opposition/addressees
Apr 17, 2019
Means of redress
Apr 17, 2019
Minutes of the oral proceedings (Opposition Division) - conclusion of the proceedings
Apr 17, 2019
Minutes of the oral proceedings (Opposition Division) - conclusion of the proceedings
Apr 17, 2019
Minutes of the oral proceedings (Opposition Division) - introduction of the parties
Apr 17, 2019
Provision of a copy of the minutes - opposition procedure
Apr 17, 2019
Scanned annex to a communication - opposition procedure
Apr 17, 2019
Scanned annex to a communication - opposition procedure
Mar 13, 2019
Information about the result of oral proceedings
Feb 25, 2019
Brief communication - Opposition proceedings
Feb 20, 2019
(Electronic) Receipt
Feb 20, 2019
Citation in opposition procedure - 020
Feb 20, 2019
Citation in opposition procedure - 021
Feb 20, 2019
Citation in opposition procedure - 022
Feb 20, 2019
Citation in opposition procedure - 023
Feb 20, 2019
Consolidated list of cited opposition documents
Feb 20, 2019
Letter accompanying subsequently filed items
Feb 20, 2019
Non-patent literature cited during the opposition procedure
Feb 20, 2019
Non-patent literature cited during the opposition procedure
Feb 20, 2019
Non-patent literature cited during the opposition procedure
Feb 20, 2019
Non-patent literature cited during the opposition procedure
Feb 20, 2019
Written submission in preparation to/during oral proceedings
Feb 1, 2019
Brief communication - Opposition proceedings
Jan 29, 2019
(Electronic) Receipt
Jan 29, 2019
Amended claims with annotations
Jan 29, 2019
Amended claims with annotations
Jan 29, 2019
Amended claims with annotations
Jan 29, 2019
Amended claims with annotations
Jan 29, 2019
Amended claims with annotations
Jan 29, 2019
Amended claims with annotations
Jan 29, 2019
Claims
Jan 29, 2019
Claims
Jan 29, 2019
Claims
Jan 29, 2019
Claims
Jan 29, 2019
Claims
Jan 29, 2019
Claims
Jan 29, 2019
Letter accompanying subsequently filed items
Jan 29, 2019
Written submission in preparation to/during oral proceedings
Jan 17, 2019
Brief communication - Opposition proceedings
Jan 17, 2019
Brief communication - Opposition proceedings
Jan 11, 2019
(Electronic) Receipt
Jan 11, 2019
(Electronic) Receipt
Jan 11, 2019
Amended claims with annotations
Jan 11, 2019
Amended claims with annotations
Jan 11, 2019
Amended claims with annotations
Jan 11, 2019
Amended claims with annotations
Jan 11, 2019
Amended claims with annotations
Jan 11, 2019
Brief communication - Opposition proceedings
Jan 11, 2019
Claims
Jan 11, 2019
Claims
Jan 11, 2019
Claims
Jan 11, 2019
Claims
Jan 11, 2019
Claims
Jan 11, 2019
Letter accompanying subsequently filed items
Jan 11, 2019
Letter accompanying subsequently filed items
Jan 11, 2019
Non-patent literature cited during the opposition procedure
Jan 11, 2019
Non-patent literature cited during the opposition procedure
Jan 11, 2019
Non-patent literature cited during the opposition procedure
Jan 11, 2019
Written submission in preparation to/during oral proceedings
Jan 11, 2019
Written submission in preparation to/during oral proceedings
Jan 7, 2019
(Electronic) Receipt
Jan 7, 2019
Request for interpreters during oral proceedings
Nov 28, 2018
Brief communication - Opposition proceedings
Nov 28, 2018
Brief communication - Opposition proceedings
Aug 27, 2018
Advice of delivery
Aug 20, 2018
Advice of delivery
Aug 20, 2018
Advice of delivery
Aug 17, 2018
Advice of delivery
Aug 16, 2018
Acknowledgement of a document
Aug 16, 2018
Acknowledgement of a document
Aug 16, 2018
Annex to a communication
Aug 16, 2018
Annex to the communication - opposition
Aug 16, 2018
Preparation for oral proceedings
Aug 10, 2018
Citation in opposition procedure - 002
Feb 23, 2018
Submission concerning representation
Feb 14, 2018
Brief communication - Opposition proceedings
Feb 9, 2018
(Electronic) Receipt
Feb 9, 2018
Amended claims with annotations
Feb 9, 2018
Amended claims with annotations
Feb 9, 2018
Amended claims with annotations
Feb 9, 2018
Claims
Feb 9, 2018
Claims
Feb 9, 2018
Claims
Feb 9, 2018
Letter accompanying subsequently filed items
Feb 9, 2018
Reply of the patent proprietor to the notice(s) of opposition
Sep 29, 2017
Communication of a notice of opposition and request to file observations
Sep 29, 2017
Notice of further oppositions to opponent(s)
Sep 26, 2017
Brief communication - Opposition proceedings
Sep 26, 2017
Communication confirming withdrawal from representation
Sep 26, 2017
Communication of amended entries concerning the representative
Sep 15, 2017
Miscellaneous requests concerning client data
Sep 15, 2017
Submission concerning change of applicant's representative
Aug 31, 2017
Communication of a notice of opposition - first information to patent proprietor
Aug 23, 2017
(Electronic) Receipt
Aug 23, 2017
Citation in opposition procedure
Aug 23, 2017
Non-patent literature cited during the opposition procedure
Aug 23, 2017
Non-patent literature cited during the opposition procedure
Aug 23, 2017
Non-patent literature cited during the opposition procedure
Aug 23, 2017
Notice of opposition
Aug 23, 2017
Notice of opposition
Aug 23, 2017
Patent document cited during the opposition procedure
Aug 23, 2017
Patent document cited during the opposition procedure
Aug 23, 2017
Patent document cited during the opposition procedure
Aug 23, 2017
Patent document cited during the opposition procedure
Aug 23, 2017
Patent document cited during the opposition procedure
Aug 23, 2017
Patent document cited during the opposition procedure
Aug 23, 2017
Patent document cited during the opposition procedure
Aug 23, 2017
Patent document cited during the opposition procedure
Aug 23, 2017
Patent document cited during the opposition procedure
Aug 23, 2017
Patent document cited during the opposition procedure
Aug 23, 2017
Patent document cited during the opposition procedure
Jan 4, 2017
Refund of fees
Nov 24, 2016
Transmission of the certificate for a European patent pursuant to Rule 74 EPC
Oct 27, 2016
Decision to grant a European patent
Oct 4, 2016
Filing of the translations of the claims
Oct 4, 2016
French translation of claims
Oct 4, 2016
German translation of the claims
Sep 30, 2016
Filing of the translations of the claims
Sep 30, 2016
French translation of claims
Sep 30, 2016
German translation of the claims
Sep 30, 2016
Matter concerning the application
Sep 28, 2016
Brief communication to applicant/representative
Sep 28, 2016
Communication of the registration of a transfer or change of name and/or address
Aug 19, 2016
(Electronic) Receipt
Aug 19, 2016
Annexes in respect of a client data request
Aug 19, 2016
Authorisation
Aug 19, 2016
Letter accompanying subsequently filed items
Aug 19, 2016
Submission concerning a transfer of rights (applicant)
Aug 10, 2016
Bibliographic data of the European patent application
Aug 10, 2016
Communication about intention to grant a European patent
Aug 10, 2016
Intention to grant (signatures)
Aug 10, 2016
Text intended for grant
Jul 26, 2016
Processing of request for correction of text proposed for grant or third party observations (from 01-04-2012)
Jun 24, 2016
Amended claims with annotations
Jun 24, 2016
Claims
Jun 24, 2016
French translation of claims
Jun 24, 2016
German translation of the claims
Jun 24, 2016
Request for correction/amendment of the text proposed for grant sent from 01.04.2012
Jun 23, 2016
Amended claims with annotations
Jun 23, 2016
Claims
Jun 23, 2016
Letter accompanying subsequently filed items
Jun 23, 2016
Payment of fees and costs
Jun 23, 2016
Payment of fees and costs
Jun 23, 2016
Request for correction/amendment of the text proposed for grant sent from 01.04.2012
Jun 23, 2016
Translation of the claims
Jun 23, 2016
Translation of the claims
Apr 22, 2016
Bibliographic data of the European patent application
Apr 22, 2016
Communication about intention to grant a European patent
Apr 22, 2016
Intention to grant (signatures)
Apr 22, 2016
Text intended for grant
Mar 14, 2016
Amended claims with annotations
Mar 14, 2016
Amended description with annotations
Mar 14, 2016
Claims
Mar 14, 2016
Description
Mar 14, 2016
Matter concerning the application
Mar 14, 2016
Reply to communication from the Examining Division
Nov 4, 2015
Annex to the communication
Nov 4, 2015
Communication from the Examining Division
Oct 20, 2015
Amended claims with annotations
Oct 20, 2015
Claims
Oct 20, 2015
Letter accompanying subsequently filed items
Oct 20, 2015
Reply to communication from the Examining Division
Jul 2, 2015
Submission concerning change of applicant's representative
Jun 10, 2015
Annex to the communication
Jun 10, 2015
Communication from the Examining Division
Dec 23, 2014
Payment of fees and costs
Dec 23, 2014
Payment of fees and costs
Oct 1, 2014
Notification on forthcoming publication of bibliographic data
Sep 17, 2014
Communication regarding comments on written opinion/amendment of application/payment of claims fee
Sep 4, 2014
Letter concerning fees and payments
Sep 4, 2014
Matter concerning the application
Sep 4, 2014
Payment of fees and costs
Sep 4, 2014
Payment of fees and costs
Aug 25, 2014
Notice drawing attention to the payment of the renewal fee and additional fee
Aug 18, 2014
Communication to designated inventor
Aug 18, 2014
Communication to designated inventor
Aug 18, 2014
Communication to designated inventor
Aug 18, 2014
Communication to designated inventor
Aug 18, 2014
Communication to designated inventor
Aug 18, 2014
Communication to designated inventor
Aug 18, 2014
Communication to designated inventor
Aug 18, 2014
Communication to designated inventor
Aug 18, 2014
Communication to designated inventor
Jul 21, 2014
(Electronic) Receipt
Jul 21, 2014
Amended claims filed after receipt of (European) search report
Jul 21, 2014
Request for entry into the European phase
Jul 7, 2014
Copy of the international preliminary report on patentability
May 6, 2014
Information on entry into European phase
Jun 27, 2013
Copy of the international search report
Jun 27, 2013
Published international application - A1
Jul 26, 2012
Notification relating to declaration under Rule 4.17 PCT (copy for ISA/EP)
Apr 3, 2012
Notification of the recording of a change
Apr 3, 2012
Notification of the recording of a change
Apr 3, 2012
Notification of the recording of a change
Apr 3, 2012
Written opinion of the ISA, boxes No. I to VIII
Apr 3, 2012
Written opinion of the ISA, cover sheet
Apr 3, 2012
Written opinion of the ISA, supplemental box
Dec 21, 2011
(Electronic) Receipt
Dec 21, 2011
Abstract
Dec 21, 2011
Claims
Dec 21, 2011
Description
Dec 21, 2011
Drawings

EP2794771

TENARIS CONNECTIONS

Application Number: EP11805016A
Filing Date: Dec 21, 2011
Status: Patent Maintained As Amended; Apr 18, 2025
Publication Date: May 21, 2025
External Links: Slate, Register , Google Patents

IP Verse

Corrosion Resistant Equipment For Oil And/Or Gas Applications

Patent Summary

Patent Family

Patent Oppositions

Dossier Documents

EP2794771