IP Verse

Metal Carboxylate Salts As H2S Scavengers In Mixed Production Or Dry Gas Systems

Patent No. EP2792732 (titled "Metal Carboxylate Salts As H2S Scavengers In Mixed Production Or Dry Gas Systems") was filed by Baker Hughes Incorporated on Mar 27, 2014. The application was issued on Nov 26, 2025.

Patent Summary

Patent Family

Statuses, jurisdictions and citation links are shared on request.

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
CLARIANT PRODUKTE DEUTSCHLAND	Jul 17, 2017	CLARIANT PRODUKTE DEUTSCHLAND

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

Oct 30, 2025
Decision to maintain the European patent in amended form
Oct 30, 2025
Decision to maintain the European patent in amended form
Oct 28, 2025
Brief communication - Opposition proceedings
Oct 21, 2025
(Electronic) Receipt
Oct 21, 2025
Filing of the translation of the amended claims
Oct 21, 2025
French translation of claims
Oct 21, 2025
German translation of the claims
Oct 21, 2025
Letter accompanying subsequently filed items
Sep 12, 2025
Communication of bibliographic data
Sep 12, 2025
Communication to opponent concerning maintenance
Sep 12, 2025
Communication with request to file translations
Sep 8, 2025
Maintenance of the patent with the documents specified in the final decision
Apr 10, 2025
Brief communication - Opposition proceedings
Apr 10, 2025
Brief communication - Opposition proceedings
Apr 10, 2025
Druckexemplar in opposition procedure
Apr 10, 2025
Grounds for the decision (Annex) - opposition
Apr 10, 2025
Interlocutory decision in opposition proceedings
Apr 10, 2025
Interlocutory decision in opposition proceedings
Apr 10, 2025
Means of redress
Apr 8, 2025
Decision of the Opposition Division and instruction
Dec 2, 2024
Brief communication - Opposition proceedings
Dec 2, 2024
Brief communication - Opposition proceedings
Dec 2, 2024
Communication inviting the parties to file observations
Dec 2, 2024
Communication inviting the parties to file observations
Jul 19, 2024
Brief communication - Opposition proceedings
Jul 11, 2024
(Electronic) Receipt
Jul 11, 2024
Amended description with annotations
Jul 11, 2024
Description
Jul 11, 2024
Letter accompanying subsequently filed items
Jul 11, 2024
Reply to an examination report in opposition proceedings
Apr 22, 2024
Annex to the communication - opposition
Apr 22, 2024
Brief communication - Opposition proceedings
Apr 22, 2024
Brief communication - Opposition proceedings
Apr 22, 2024
Communication inviting the parties to file observations
Apr 22, 2024
Communication inviting the parties to file observations
Jan 22, 2024
Brief communication - Opposition proceedings
Jan 22, 2024
Communication of amended entries
Jan 16, 2024
Request for change of opponent's representative
Dec 21, 2023
Decision of the Board of Appeal
Dec 21, 2023
F3032 Notification(s) of the decision
Dec 21, 2023
F3032 Notification(s) of the decision
Nov 7, 2023
F3013 Oral Proceedings: Forwarding minutes
Nov 7, 2023
F3013 Oral Proceedings: Forwarding minutes
Nov 7, 2023
F3315 Oral Proceedings: Minutes (Appellant : Proprietor)
Oct 13, 2023
F3345 Forwarding of submissions to parties
Oct 12, 2023
(Electronic) Receipt
Oct 12, 2023
Annexes (other than cited documents) regarding appeal procedure
Oct 12, 2023
Annexes (other than cited documents) regarding appeal procedure
Oct 12, 2023
Letter accompanying subsequently filed items
Oct 12, 2023
Letter dealing with oral proceedings during the appeal procedure
Sep 12, 2023
F3345 Forwarding of submissions to parties
Sep 6, 2023
(Electronic) Receipt
Sep 6, 2023
Authorisation
Sep 6, 2023
Letter accompanying subsequently filed items
Sep 6, 2023
Request for interpreters during oral proceedings
Sep 4, 2023
F3004 Communication of the Registry
Sep 4, 2023
F3004 Communication of the Registry
Sep 4, 2023
F3018 Oral proceedings: Confirmation interpreters
Sep 4, 2023
F3018 Oral proceedings: Confirmation interpreters
Aug 29, 2023
F3345 Forwarding of submissions to parties
Aug 25, 2023
(Electronic) Receipt
Aug 25, 2023
Letter accompanying subsequently filed items
Aug 25, 2023
Letter dealing with oral proceedings during the appeal procedure
Aug 17, 2023
F3345 Forwarding of submissions to parties
Aug 15, 2023
(Electronic) Receipt
Aug 15, 2023
Letter accompanying subsequently filed items
Aug 15, 2023
Letter dealing with oral proceedings during the appeal procedure
Mar 20, 2023
F3011.1 Oral Proceedings: summons
Mar 20, 2023
F3011.1 Oral Proceedings: summons
Mar 15, 2023
F3010 Oral proceedings: order for summons
Jan 28, 2022
F3345 Forwarding of submissions to parties
Jan 26, 2022
F3017 Oral Proceedings: Notification of cancellation/postponing
Jan 26, 2022
F3017 Oral Proceedings: Notification of cancellation/postponing
Jan 26, 2022
F3305 Communication of the Board of Appeal (ex parte/ inter partes)
Jan 26, 2022
F3305 Communication of the Board of Appeal (ex parte/ inter partes)
Jan 24, 2022
(Electronic) Receipt
Jan 24, 2022
Letter accompanying subsequently filed items
Jan 24, 2022
Letter dealing with oral proceedings during the appeal procedure
Jan 21, 2022
F3014 Oral Proceedings: Order cancelling/postponing
Jan 17, 2022
F3345 Forwarding of submissions to parties
Jan 13, 2022
(Electronic) Receipt
Jan 13, 2022
Letter accompanying subsequently filed items
Jan 13, 2022
Letter dealing with oral proceedings during the appeal procedure
Jan 11, 2022
F3345 Forwarding of submissions to parties
Jan 7, 2022
(Electronic) Receipt
Jan 7, 2022
Letter accompanying subsequently filed items
Jan 7, 2022
Letter dealing with oral proceedings during the appeal procedure
Dec 23, 2021
F3305 Communication of the Board of Appeal (ex parte/ inter partes)
Dec 23, 2021
F3305 Communication of the Board of Appeal (ex parte/ inter partes)
Dec 21, 2021
F3345 Forwarding of submissions to parties
Dec 16, 2021
(Electronic) Receipt
Dec 16, 2021
Letter accompanying subsequently filed items
Dec 16, 2021
Letter dealing with oral proceedings during the appeal procedure
Nov 25, 2021
F3305 Communication of the Board of Appeal (ex parte/ inter partes)
Nov 25, 2021
F3305 Communication of the Board of Appeal (ex parte/ inter partes)
Mar 26, 2021
F3345 Forwarding of submissions to parties
Mar 25, 2021
F3936 Acknowledgement of receipt Board of Appeal
Mar 23, 2021
(Electronic) Receipt
Mar 23, 2021
(Electronic) Receipt
Mar 23, 2021
Authorisation
Mar 23, 2021
F3936 Acknowledgement of receipt Board of Appeal
Mar 23, 2021
Letter accompanying subsequently filed items
Mar 23, 2021
Letter accompanying subsequently filed items
Mar 23, 2021
Letter dealing with oral proceedings during the appeal procedure
Mar 16, 2021
F3011.1 Oral Proceedings: summons
Mar 16, 2021
F3011.1 Oral Proceedings: summons
Mar 11, 2021
F3010 Oral proceedings: order for summons
Mar 11, 2021
F3303.16 Change of composition of the Board (T)
Jan 14, 2020
F3057 Communication: Change of responsibility of a Board of Appeal
Jan 14, 2020
F3057 Communication: Change of responsibility of a Board of Appeal
Dec 16, 2019
F3345 Forwarding of submissions to parties
Dec 10, 2019
(Electronic) Receipt
Dec 10, 2019
Letter accompanying subsequently filed items
Dec 10, 2019
Letter relating to Appeal Procedure
Nov 14, 2019
Composition of the board (T)
Aug 28, 2019
F3345 Forwarding of submissions to parties
Aug 21, 2019
Non-Patent Literature cited during the appeal procedure
Aug 20, 2019
Non-scannable object
Aug 20, 2019
Reply to appeal
Apr 15, 2019
F3344 Setting time limit for reply/ file observations to appeal (inter partes)
Apr 9, 2019
(Electronic) Receipt
Apr 9, 2019
Amended claims with annotations
Apr 9, 2019
Amended claims with annotations
Apr 9, 2019
Amended claims with annotations
Apr 9, 2019
Amended claims with annotations
Apr 9, 2019
Amended claims with annotations
Apr 9, 2019
Amended claims with annotations
Apr 9, 2019
Amended claims with annotations
Apr 9, 2019
Amended claims with annotations
Apr 9, 2019
Claims
Apr 9, 2019
Claims
Apr 9, 2019
Claims
Apr 9, 2019
Claims
Apr 9, 2019
Claims
Apr 9, 2019
Claims
Apr 9, 2019
Claims
Apr 9, 2019
Claims
Apr 9, 2019
Letter accompanying subsequently filed items
Apr 9, 2019
Letter relating to Appeal Procedure
Apr 9, 2019
Non-Patent Literature cited during the appeal procedure
Apr 9, 2019
Statement of grounds of appeal
Feb 19, 2019
F3204 Communication of the file number to the parties
Feb 19, 2019
F3204 Communication of the file number to the parties
Feb 12, 2019
Processing of an appeal
Feb 11, 2019
Advice of delivery
Feb 8, 2019
(Electronic) Receipt
Feb 8, 2019
Letter accompanying subsequently filed items
Feb 8, 2019
Notice of appeal
Dec 12, 2018
Advice of delivery
Dec 5, 2018
Advice of delivery
Nov 29, 2018
Acknowledgement of a document
Nov 29, 2018
Acknowledgement of a document
Nov 29, 2018
Decision of the Opposition Division and instruction
Nov 29, 2018
Decision revoking the European patent
Nov 29, 2018
Grounds for the decision (Annex) - opposition
Nov 29, 2018
Internal form - Opposition/addressees
Nov 27, 2018
Annex to the communication - opposition
Nov 27, 2018
Internal form - Opposition/addressees
Nov 27, 2018
Minutes of the oral proceedings (Opposition Division) - conclusion of the proceedings
Nov 27, 2018
Minutes of the oral proceedings (Opposition Division) - conclusion of the proceedings
Nov 27, 2018
Minutes of the oral proceedings (Opposition Division) - introduction of the parties
Nov 27, 2018
Provision of a copy of the minutes - opposition procedure
Nov 27, 2018
Scanned annex to a communication - opposition procedure
Nov 5, 2018
Information about the result of oral proceedings
Oct 31, 2018
(Electronic) Receipt
Oct 31, 2018
Claims
Oct 31, 2018
Claims
Oct 31, 2018
Claims
Oct 31, 2018
Claims
Oct 31, 2018
Claims
Oct 31, 2018
Claims
Oct 31, 2018
Letter accompanying subsequently filed items
Oct 31, 2018
Letter regarding the opposition procedure (no time limit)
Oct 30, 2018
Authorisation
Oct 30, 2018
Letter regarding the opposition procedure (no time limit)
Oct 24, 2018
Advice of delivery
Oct 22, 2018
Advice of delivery
Oct 18, 2018
Notification concerning the date of oral proceedings
Oct 18, 2018
Notification concerning the date of oral proceedings
Oct 15, 2018
Brief communication - Opposition proceedings
Oct 9, 2018
Request for interpreters during oral proceedings
Oct 5, 2018
Brief communication - Opposition proceedings
Oct 1, 2018
Brief communication - Opposition proceedings
Sep 21, 2018
Letter regarding the opposition procedure (no time limit)
Sep 11, 2018
Brief communication - Opposition proceedings
Sep 10, 2018
Brief communication - Opposition proceedings
Sep 5, 2018
(Electronic) Receipt
Sep 5, 2018
Any annexes (other than citation) to an opposition letter
Sep 5, 2018
Claims
Sep 5, 2018
Claims
Sep 5, 2018
Claims
Sep 5, 2018
Claims
Sep 5, 2018
Claims
Sep 5, 2018
Claims
Sep 5, 2018
Claims
Sep 5, 2018
Claims
Sep 5, 2018
Claims
Sep 5, 2018
Claims
Sep 5, 2018
Claims
Sep 5, 2018
Claims
Sep 5, 2018
Letter accompanying subsequently filed items
Sep 5, 2018
Letter regarding the opposition procedure (no time limit)
Aug 31, 2018
(Electronic) Receipt
Aug 31, 2018
Letter accompanying subsequently filed items
Aug 31, 2018
Request for interpreters during oral proceedings
Jun 14, 2018
Brief communication - Opposition proceedings
Jun 6, 2018
Any annexes (other than citation) to an opposition letter
Jun 6, 2018
Letter regarding the opposition procedure (no time limit)
May 29, 2018
Advice of delivery
May 28, 2018
Communication of amended entries concerning the representative
May 22, 2018
Communication about missing advice of delivery
May 17, 2018
Submission concerning change of applicant's representative
May 14, 2018
Advice of delivery
May 8, 2018
Brief communication - Opposition proceedings
May 2, 2018
(Electronic) Receipt
May 2, 2018
Auxiliary request during Opposition procedure
May 2, 2018
Auxiliary request during Opposition procedure
May 2, 2018
Auxiliary request during Opposition procedure
May 2, 2018
Auxiliary request during Opposition procedure
May 2, 2018
Auxiliary request during Opposition procedure
May 2, 2018
Auxiliary request during Opposition procedure
May 2, 2018
Letter accompanying subsequently filed items
May 2, 2018
Letter regarding the opposition procedure (no time limit)
Apr 30, 2018
Advice of delivery
Apr 23, 2018
Acknowledgement of a document
Apr 23, 2018
Acknowledgement of a document
Apr 23, 2018
Annex to the communication - opposition
Apr 23, 2018
Information concerning oral proceedings
Apr 23, 2018
Preparation for oral proceedings
Apr 23, 2018
Summons to attend oral proceedings
Apr 23, 2018
Summons to attend oral proceedings
Feb 26, 2018
Brief communication - Opposition proceedings
Feb 21, 2018
(Electronic) Receipt
Feb 21, 2018
Amended claims with annotations
Feb 21, 2018
Amended claims with annotations
Feb 21, 2018
Amended claims with annotations
Feb 21, 2018
Amended claims with annotations
Feb 21, 2018
Amended claims with annotations
Feb 21, 2018
Amended claims with annotations
Feb 21, 2018
Amended claims with annotations
Feb 21, 2018
Amended claims with annotations
Feb 21, 2018
Amended claims with annotations
Feb 21, 2018
Amended claims with annotations
Feb 21, 2018
Amended claims with annotations
Feb 21, 2018
Amended claims with annotations
Feb 21, 2018
Any annexes (other than citation) to an opposition letter
Feb 21, 2018
Claims
Feb 21, 2018
Claims
Feb 21, 2018
Claims
Feb 21, 2018
Claims
Feb 21, 2018
Claims
Feb 21, 2018
Claims
Feb 21, 2018
Claims
Feb 21, 2018
Claims
Feb 21, 2018
Claims
Feb 21, 2018
Claims
Feb 21, 2018
Claims
Feb 21, 2018
Claims
Feb 21, 2018
Letter accompanying subsequently filed items
Feb 21, 2018
Reply of the patent proprietor to the notice(s) of opposition
Jan 31, 2018
Brief communication - Opposition proceedings
Jan 31, 2018
Rejection of request for extension of time limit
Jan 25, 2018
Brief communication - Opposition proceedings
Jan 22, 2018
Result of consultation by telephone/in person
Jan 18, 2018
(Electronic) Receipt
Jan 18, 2018
Letter accompanying subsequently filed items
Jan 18, 2018
Request for extension of time limit
Sep 12, 2017
Communication of a notice of opposition and request to file observations
Sep 12, 2017
Notice of further oppositions to opponent(s)
Jul 26, 2017
Communication of a notice of opposition - first information to patent proprietor
Jul 17, 2017
Non-patent literature cited during the opposition procedure
Jul 17, 2017
Non-patent literature cited during the opposition procedure
Jul 17, 2017
Non-patent literature cited during the opposition procedure
Jul 17, 2017
Non-patent literature cited during the opposition procedure
Jul 17, 2017
Non-patent literature cited during the opposition procedure
Jul 17, 2017
Non-scannable object
Jul 17, 2017
Non-scannable object
Jul 17, 2017
Non-scannable object
Jul 17, 2017
Notice of opposition
Jul 17, 2017
Patent document cited during the opposition procedure
Jul 17, 2017
Patent document cited during the opposition procedure
Jul 17, 2017
Patent document cited during the opposition procedure
Jul 17, 2017
Patent document cited during the opposition procedure
Jul 17, 2017
Patent document cited during the opposition procedure
Jul 17, 2017
Patent document cited during the opposition procedure
Jul 17, 2017
Patent document cited during the opposition procedure
Jul 17, 2017
Patent document cited during the opposition procedure
Jul 17, 2017
Patent document cited during the opposition procedure
Jul 17, 2017
Payment of fees and costs
Jul 17, 2017
Translation of the evidence during Opposition procedure
Nov 3, 2016
Transmission of the certificate for a European patent pursuant to Rule 74 EPC
Oct 7, 2016
Decision to grant a European patent
Sep 22, 2016
Bibliographic data of the European patent application
Sep 22, 2016
Information about intention to grant a patent
Sep 22, 2016
Intention to grant (signatures)
Sep 22, 2016
Text intended for grant (clean copy)
Sep 22, 2016
Text intended for grant (version for approval)
Sep 20, 2016
Processing of request for correction of text proposed for grant or third party observations (from 01-04-2012)
Sep 16, 2016
(Electronic) Receipt
Sep 16, 2016
Amended description with annotations
Sep 16, 2016
Description
Sep 16, 2016
French translation of claims
Sep 16, 2016
German translation of the claims
Sep 16, 2016
Letter accompanying subsequently filed items
Sep 16, 2016
Request for correction/amendment of the text proposed for grant sent from 01.04.2012
Jun 2, 2016
Bibliographic data of the European patent application
Jun 2, 2016
Communication about intention to grant a European patent
Jun 2, 2016
Intention to grant (signatures)
Jun 2, 2016
Text intended for grant (clean copy)
Jun 2, 2016
Text intended for grant (version for approval)
Jan 28, 2016
(Electronic) Receipt
Jan 28, 2016
Letter accompanying subsequently filed items
Jan 28, 2016
Reply to communication from the Examining Division
Sep 24, 2015
Annex to the communication
Sep 24, 2015
Communication from the Examining Division
Aug 13, 2015
Communication of amended entries concerning the representative
Jul 31, 2015
Submission concerning change of applicant's representative
Jul 15, 2015
(Electronic) Receipt
Jul 15, 2015
Amended claims with annotations
Jul 15, 2015
Claims
Jul 15, 2015
Letter accompanying subsequently filed items
Jul 15, 2015
Reply to communication from the Examining Division
Apr 20, 2015
(Electronic) Receipt
Apr 20, 2015
Letter accompanying subsequently filed items
Apr 20, 2015
Letter concerning fees and payments
Mar 10, 2015
Annex to the communication
Mar 10, 2015
Communication from the Examining Division
Nov 14, 2014
(Electronic) Receipt
Nov 14, 2014
Amended claims with annotations
Nov 14, 2014
Amended description with annotations
Nov 14, 2014
Claims
Nov 14, 2014
Description
Nov 14, 2014
Letter accompanying subsequently filed items
Nov 14, 2014
Reply to communication from the Examining Division
Nov 10, 2014
Letter concerning the priority
Nov 10, 2014
Priority document
Oct 27, 2014
Information about publication, reminder payment of designation fee, response to extended European search report, if applicable
Sep 29, 2014
Invitation to file priority document
Sep 24, 2014
Notification of forthcoming publication
Jul 21, 2014
Letter concerning the priority
Jul 21, 2014
Priority document
Jul 7, 2014
Annex to the communication
Jul 7, 2014
Communication from the Examining Division
Jul 2, 2014
Enquiry as to when a communication from the Examining Division can be expected
Jun 25, 2014
Communication regarding the transmission of the European search report
Jun 25, 2014
European search report
Jun 12, 2014
Search started
Jun 2, 2014
Confirmation of receipt of (electronically) transmitted priority document
May 27, 2014
Priority document (electronically transmitted)
May 20, 2014
Communication to designated inventor
May 20, 2014
Communication to designated inventor
May 20, 2014
Communication to designated inventor
Mar 27, 2014
Abstract
Mar 27, 2014
Acknowledgement of receipt of electronic submission of the request for grant of a European patent
Mar 27, 2014
Claims
Mar 27, 2014
Description
Mar 27, 2014
Designation of inventor
Mar 27, 2014
Designation of inventor
Mar 27, 2014
Designation of inventor
Mar 27, 2014
Drawings
Mar 27, 2014
Request for grant of a European patent

EP2792732

BAKER HUGHES INCORPORATED

Application Number: EP14162121A
Filing Date: Mar 27, 2014
Status: Patent Maintained As Amended; Oct 24, 2025
Publication Date: Nov 26, 2025
External Links: Slate, Register , Google Patents