Method For Operating A Burner Arrangement Of A Gas Turbine

Patent No. EP3698031 (titled "Method For Operating A Burner Arrangement Of A Gas Turbine") was filed by Siemens on Jan 22, 2019. The application was issued on Oct 15, 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
ANSALDO ENERGIA SWITZERLAND	Apr 7, 2022	STUDIO TORTA

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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Sep 18, 2025
Decision to maintain the European patent in amended form
Sep 18, 2025
Decision to maintain the European patent in amended form
Sep 4, 2025
(Electronic) Receipt
Sep 4, 2025
English translation of the claims
Sep 4, 2025
Filing of the translation of the amended claims
Sep 4, 2025
French translation of claims
Jul 2, 2025
Communication of bibliographic data
Jul 2, 2025
Communication to opponent concerning maintenance
Jul 2, 2025
Communication with request to file translations
Jun 26, 2025
Maintenance of the patent with the documents specified in the final decision
Jun 24, 2025
Refund of fees
Jun 18, 2025
F3017 Oral Proceedings: Notification of cancellation/postponing
Jun 18, 2025
F3017 Oral Proceedings: Notification of cancellation/postponing
Jun 18, 2025
F3324 Closure of the appeal proceedings: withdrawal of the appeal/ application/ opposition
Jun 18, 2025
F3324 Closure of the appeal proceedings: withdrawal of the appeal/ application/ opposition
Jun 17, 2025
(Electronic) Receipt
Jun 17, 2025
F3014 Oral Proceedings: Order cancelling/postponing
Jun 17, 2025
Letter accompanying subsequently filed items
Jun 17, 2025
Withdrawal of an appeal
May 22, 2025
F3305 Communication of the Board of Appeal (ex parte/ inter partes)
May 22, 2025
F3305 Communication of the Board of Appeal (ex parte/ inter partes)
Dec 11, 2024
F3011.2 Oral Proceedings: Summons VICO
Dec 11, 2024
F3011.2 Oral Proceedings: Summons VICO
Dec 10, 2024
F3056 Communication: Change of Board due to the technical nature of the appeal
Dec 10, 2024
F3056 Communication: Change of Board due to the technical nature of the appeal
Dec 6, 2024
Composition of the board (T)
Dec 6, 2024
F3010 Oral proceedings: order for summons
Dec 5, 2024
F3313 Order: change of Board due to the technical aspects of the appeal
Apr 8, 2024
F3345 Forwarding of submissions to parties
Apr 3, 2024
(Electronic) Receipt
Apr 3, 2024
Amended claims with annotations
Apr 3, 2024
Amended claims with annotations
Apr 3, 2024
Amended claims with annotations
Apr 3, 2024
Amended claims with annotations
Apr 3, 2024
Amended claims with annotations
Apr 3, 2024
Amended claims with annotations
Apr 3, 2024
Auxiliary request during appeals procedure - 01
Apr 3, 2024
Auxiliary request during appeals procedure - 02
Apr 3, 2024
Auxiliary request during appeals procedure - 03
Apr 3, 2024
Auxiliary request during appeals procedure - 04
Apr 3, 2024
Auxiliary request during appeals procedure - 05
Apr 3, 2024
Letter accompanying subsequently filed items
Apr 3, 2024
Main request during appeals procedure
Apr 3, 2024
Reply to appeal
Dec 15, 2023
F3344 Setting time limit for reply/ file observations to appeal (inter partes)
Dec 12, 2023
(Electronic) Receipt
Dec 12, 2023
Letter accompanying subsequently filed items
Dec 12, 2023
Statement of grounds of appeal
Oct 24, 2023
F3204 Communication of the file number to the parties
Oct 24, 2023
F3204 Communication of the file number to the parties
Oct 17, 2023
(Electronic) Receipt
Oct 17, 2023
Letter accompanying subsequently filed items
Oct 17, 2023
Notice of appeal
Aug 7, 2023
(Electronic) Receipt
Aug 7, 2023
(Electronic) Receipt
Aug 7, 2023
Advice of delivery
Aug 7, 2023
Advice of delivery
Aug 7, 2023
Annex to the communication - opposition
Aug 7, 2023
Decision of the Opposition Division and instruction
Aug 7, 2023
Decision of the Opposition Division and instruction
Aug 7, 2023
Druckexemplar in opposition procedure
Aug 7, 2023
Grounds for the decision (Annex) - opposition
Aug 7, 2023
Interlocutory decision in opposition proceedings
Aug 7, 2023
Interlocutory decision in opposition proceedings
Aug 7, 2023
Letter accompanying subsequently filed items
Aug 7, 2023
Letter accompanying subsequently filed items
Aug 7, 2023
Means of redress
Aug 7, 2023
Minutes of the oral proceedings (Opposition Division) - conclusion of the proceedings
Aug 7, 2023
Minutes of the oral proceedings (Opposition Division) - introduction of the parties
Aug 7, 2023
Provision of a copy of the minutes - opposition procedure
Aug 7, 2023
Provision of a copy of the minutes - opposition procedure
Aug 7, 2023
Scanned annex to a communication - opposition procedure
Aug 7, 2023
Scanned annex to a communication - opposition procedure
Aug 7, 2023
Scanned annex to a communication - opposition procedure
Aug 7, 2023
Transmittal of decision / summons - opposition
Aug 7, 2023
Transmittal of decision / summons - opposition
May 11, 2023
Information about the result of oral proceedings
Mar 17, 2023
Brief communication - Opposition proceedings
Mar 10, 2023
(Electronic) Receipt
Mar 10, 2023
Letter accompanying subsequently filed items
Mar 10, 2023
Request for interpreters during oral proceedings
Mar 10, 2023
Written submission in preparation to/during oral proceedings
Feb 1, 2023
Letter accompanying subsequently filed items
Feb 1, 2023
Submission concerning change of applicant's address
Jan 11, 2023
Brief communication - Opposition proceedings
Jan 4, 2023
(Electronic) Receipt
Jan 4, 2023
Letter accompanying subsequently filed items
Jan 4, 2023
Written submission in preparation to/during oral proceedings
Jan 2, 2023
Brief communication - Opposition proceedings
Dec 15, 2022
(Electronic) Receipt
Dec 15, 2022
Letter accompanying subsequently filed items
Dec 15, 2022
Request for interpreters during oral proceedings
Dec 6, 2022
Notification concerning the date of oral proceedings
Dec 6, 2022
Notification concerning the date of oral proceedings
Nov 17, 2022
(Electronic) Receipt
Nov 17, 2022
Advice of delivery
Nov 17, 2022
Letter accompanying subsequently filed items
Nov 16, 2022
Annex to the communication - opposition
Nov 16, 2022
Information concerning oral proceedings
Nov 16, 2022
Scanned annex to a communication - opposition procedure
Nov 16, 2022
Summons to attend oral proceedings
Nov 16, 2022
Summons to attend oral proceedings
Nov 16, 2022
Transmittal of decision / summons - opposition
Nov 16, 2022
Transmittal of decision / summons - opposition
Jun 7, 2022
Brief communication - Opposition proceedings
May 30, 2022
(Electronic) Receipt
May 30, 2022
Auxiliary request during Opposition procedure
May 30, 2022
Auxiliary request during Opposition procedure
May 30, 2022
Auxiliary request during Opposition procedure
May 30, 2022
Auxiliary request during Opposition procedure
May 30, 2022
Auxiliary request during Opposition procedure
May 30, 2022
Auxiliary request during Opposition procedure
May 30, 2022
Auxiliary request during Opposition procedure
May 30, 2022
Auxiliary request during Opposition procedure
May 30, 2022
Auxiliary request during Opposition procedure
May 30, 2022
Auxiliary request during Opposition procedure - 01
May 30, 2022
Auxiliary request during Opposition procedure - 02
May 30, 2022
Auxiliary request during Opposition procedure - 03
May 30, 2022
Auxiliary request during Opposition procedure - 04
May 30, 2022
Auxiliary request during Opposition procedure - 05
May 30, 2022
Auxiliary request during Opposition procedure - 06
May 30, 2022
Auxiliary request during Opposition procedure - 07
May 30, 2022
Auxiliary request during Opposition procedure - 08
May 30, 2022
Auxiliary request during Opposition procedure - 09
May 30, 2022
Letter accompanying subsequently filed items
May 30, 2022
Reply of the patent proprietor to the notice(s) of opposition
Apr 25, 2022
Communication of a notice of opposition and request to file observations
Apr 25, 2022
Notice of further oppositions to opponent(s)
Apr 19, 2022
Communication of a notice of opposition - first information to patent proprietor
Apr 7, 2022
Citation in opposition procedure - 001
Apr 7, 2022
Citation in opposition procedure - 002
Apr 7, 2022
Citation in opposition procedure - 003
Apr 7, 2022
Citation in opposition procedure - 004
Apr 7, 2022
Citation in opposition procedure - 005
Apr 7, 2022
Citation in opposition procedure - 006
Apr 7, 2022
Citation in opposition procedure - 007
Apr 7, 2022
Citation in opposition procedure - 008
Apr 7, 2022
Citation in opposition procedure - 009
Apr 7, 2022
Consolidated list of cited opposition documents
Apr 7, 2022
Letter accompanying subsequently filed items
Apr 7, 2022
Notice of opposition
Apr 7, 2022
Notice of opposition
Jul 20, 2021
Transmission of the certificate for a European patent pursuant to Rule 74 EPC
Jul 12, 2021
Communication confirming withdrawal from representation
Jun 10, 2021
Decision to grant a European patent
Jun 9, 2021
Annexes in respect of a client data request
Jun 9, 2021
Submission concerning change of applicant's representative
May 27, 2021
(Electronic) Receipt
May 27, 2021
English translation of the claims
May 27, 2021
Filing of the translations of the claims
May 27, 2021
French translation of claims
Mar 10, 2021
Bibliographic data of the European patent application
Mar 10, 2021
Communication about intention to grant a European patent
Mar 10, 2021
Text intended for grant (clean copy)
Mar 10, 2021
Text intended for grant (version for approval)
Mar 9, 2021
Intention to grant (signatures)
Mar 1, 2021
Bibliographic data of the European patent application
Jan 21, 2021
(Electronic) Receipt
Jan 21, 2021
Invitation to file a copy of search results(priority)
Jan 21, 2021
Letter accompanying subsequently filed items
Jan 21, 2021
Statement of non-availability of priority search results
Dec 23, 2020
Communication of the registration of a transfer or change of name and/or address
Aug 31, 2020
Copy of the international preliminary report on patentability
Jul 29, 2020
Notification on forthcoming publication of bibliographic data
Jun 16, 2020
(Electronic) Receipt
Jun 16, 2020
Amended claims filed after receipt of (European) search report
Jun 16, 2020
Amended claims with annotations
Jun 16, 2020
Amendments received before examination
Jun 16, 2020
Letter accompanying subsequently filed items
Jun 5, 2020
Communication concerning correction of deficiencies in written opinion/amendment of application/payment of claims fee
Jun 2, 2020
Communication to designated inventor
Jun 2, 2020
Communication to designated inventor
Jun 2, 2020
Communication to designated inventor
Jun 2, 2020
Confirmation of effective date of early entry
May 28, 2020
Notification of the recording of a change
May 28, 2020
Notification of the recording of a change
May 28, 2020
Notification of the recording of a change
May 28, 2020
Priority search results copy provided by EPO
May 19, 2020
(Electronic) Receipt
May 19, 2020
Request for entry into the European phase
Sep 10, 2019
Priority document (electronically transmitted)
Sep 10, 2019
Priority document (electronically transmitted)
Aug 22, 2019
Copy of the international search report
Aug 22, 2019
Copy of the international search report
Aug 22, 2019
Published international application - A1
May 14, 2019
ISR: cited documents
May 14, 2019
International Search Report - copy in English for the IB
May 14, 2019
Written opinion of the ISA, boxes No. I to VIII
May 14, 2019
Written opinion of the ISA, cover sheet
May 14, 2019
Written opinion of the ISA, supplemental box
Feb 26, 2019
Notification of receipt of Search copy
Feb 20, 2019
Request form for international application (copy for ISA/EP)
Feb 6, 2019
Notification of the international application number and of the international filing date
Jan 28, 2019
Incoming letter related to PCT RO
Jan 22, 2019
(Electronic) Receipt
Jan 22, 2019
Abstract
Jan 22, 2019
Claims
Jan 22, 2019
Description
Jan 22, 2019
Document concerning fees and payments
Jan 22, 2019
Drawings
Jan 22, 2019
Electronic request for grant of an International application
Jan 22, 2019
Incoming communication concerning PCT Direct
Jan 22, 2019
Priority document (RO-procedure)

EP3698031

SIEMENS

Application Number: EP19704203A
Filing Date: Jan 22, 2019
Status: Patent Maintained As Amended; Sep 12, 2025
Publication Date: Oct 15, 2025
External Links: Slate, Register , Google Patents

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Method For Operating A Burner Arrangement Of A Gas Turbine

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Dossier Documents

EP3698031