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A Method And A System For Extending The Load Range Of A Power Plant Comprising A Boiler Supplying Steam To A Steam Turbine

Patent No. EP3415816 (titled "A Method And A System For Extending The Load Range Of A Power Plant Comprising A Boiler Supplying Steam To A Steam Turbine") was filed by Valmet on Apr 24, 2018. The application was issued on Sep 24, 2025.

Patent Summary

Patent Family

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
SUMITOMO SHI FW ENERGIA	Jun 29, 2021	GENIP

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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Aug 28, 2025
Decision to maintain the European patent in amended form
Aug 28, 2025
Decision to maintain the European patent in amended form
Aug 20, 2025
(Electronic) Receipt
Aug 20, 2025
Amended description with annotations
Aug 20, 2025
Description
Aug 20, 2025
Filing of the translation of the amended claims
Aug 20, 2025
French translation of claims
Aug 20, 2025
German translation of the claims
Aug 20, 2025
Letter accompanying subsequently filed items
Jun 11, 2025
Communication of bibliographic data
Jun 11, 2025
Communication to opponent concerning maintenance
Jun 11, 2025
Communication with request to file translations
Jun 2, 2025
Maintenance of the patent with the documents specified in the final decision
Apr 23, 2025
Decision of the Board of Appeal
Apr 23, 2025
F3032 Notification(s) of the decision
Apr 23, 2025
F3032 Notification(s) of the decision
Mar 24, 2025
F3013 Oral Proceedings: Forwarding minutes
Mar 24, 2025
F3013 Oral Proceedings: Forwarding minutes
Mar 24, 2025
F3316 Oral Proceedings: Minutes (Appellant: Opponent)
Mar 10, 2025
(Electronic) Receipt
Mar 10, 2025
Letter accompanying subsequently filed items
Mar 10, 2025
Oral proceedings: reply to date proposed
Feb 24, 2025
F3345 Forwarding of submissions to parties
Feb 21, 2025
F3345 Forwarding of submissions to parties
Feb 19, 2025
(Electronic) Receipt
Feb 19, 2025
Letter accompanying subsequently filed items
Feb 19, 2025
Letter dealing with oral proceedings during the appeal procedure
Feb 17, 2025
(Electronic) Receipt
Feb 17, 2025
Letter accompanying subsequently filed items
Feb 17, 2025
Letter dealing with oral proceedings during the appeal procedure
Feb 5, 2025
F3305 Communication of the Board of Appeal (ex parte/ inter partes)
Feb 5, 2025
F3305 Communication of the Board of Appeal (ex parte/ inter partes)
Jan 28, 2025
F3345 Forwarding of submissions to parties
Jan 28, 2025
Oral proceedings: reply to date proposed
Nov 21, 2024
Oral proceedings: change of venue
Nov 21, 2024
Oral proceedings: change of venue
Nov 18, 2024
(Electronic) Receipt
Nov 18, 2024
F3345 Forwarding of submissions to parties
Nov 18, 2024
Letter accompanying subsequently filed items
Nov 18, 2024
Letter dealing with oral proceedings during the appeal procedure
Nov 12, 2024
F3345 Forwarding of submissions to parties
Nov 6, 2024
(Electronic) Receipt
Nov 6, 2024
Letter accompanying subsequently filed items
Nov 6, 2024
Letter dealing with oral proceedings during the appeal procedure
Oct 16, 2024
F3011.1 Oral Proceedings: summons
Oct 16, 2024
F3011.1 Oral Proceedings: summons
Oct 11, 2024
F3010 Oral proceedings: order for summons
Mar 3, 2024
Composition of the board (T)
Jan 5, 2024
F3345 Forwarding of submissions to parties
Dec 28, 2023
(Electronic) Receipt
Dec 28, 2023
Letter accompanying subsequently filed items
Dec 28, 2023
Reply to appeal
Sep 12, 2023
F3344 Setting time limit for reply/ file observations to appeal (inter partes)
Sep 7, 2023
(Electronic) Receipt
Sep 7, 2023
Letter accompanying subsequently filed items
Sep 7, 2023
Statement of grounds of appeal
Jul 4, 2023
F3204 Communication of the file number to the parties
Jul 4, 2023
F3204 Communication of the file number to the parties
Jun 28, 2023
(Electronic) Receipt
Jun 28, 2023
Letter accompanying subsequently filed items
Jun 28, 2023
Notice of appeal
May 11, 2023
Advice of delivery
May 10, 2023
Advice of delivery
May 10, 2023
Annex to the communication - opposition
May 10, 2023
Decision of the Opposition Division and instruction
May 10, 2023
Grounds for the decision (Annex) - opposition
May 10, 2023
Interlocutory decision in opposition proceedings
May 10, 2023
Interlocutory decision in opposition proceedings
May 10, 2023
Means of redress
May 10, 2023
Minutes of the oral proceedings (Opposition Division) - conclusion of the proceedings
May 10, 2023
Minutes of the oral proceedings (Opposition Division) - conclusion of the proceedings
May 10, 2023
Minutes of the oral proceedings (Opposition Division) - introduction of the parties
May 10, 2023
OPPODREX with handwritten amendments
May 10, 2023
Provision of a copy of the minutes - opposition procedure
May 10, 2023
Provision of a copy of the minutes - opposition procedure
May 10, 2023
Scanned annex to a communication - opposition procedure
May 10, 2023
Scanned annex to a communication - opposition procedure
May 10, 2023
Scanned annex to a communication - opposition procedure
May 10, 2023
Scanned annex to a communication - opposition procedure
May 10, 2023
Scanned annex to a communication - opposition procedure
May 10, 2023
Scanned annex to a communication - opposition procedure
May 10, 2023
Transmittal of decision / summons - opposition
May 10, 2023
Transmittal of decision / summons - opposition
May 8, 2023
Transmittal of decision / summons - opposition
May 8, 2023
Transmittal of decision / summons - opposition
Oct 11, 2022
Information about the result of oral proceedings
Aug 17, 2022
Brief communication - Opposition proceedings
Aug 11, 2022
(Electronic) Receipt
Aug 11, 2022
Auxiliary request during Opposition procedure
Aug 11, 2022
Auxiliary request during Opposition procedure - 01
Aug 11, 2022
Brief communication - Opposition proceedings
Aug 11, 2022
Letter accompanying subsequently filed items
Aug 11, 2022
Request for interpreters during oral proceedings
Aug 11, 2022
Written submission in preparation to/during oral proceedings
Aug 8, 2022
(Electronic) Receipt
Aug 8, 2022
Letter accompanying subsequently filed items
Aug 8, 2022
Written submission in preparation to/during oral proceedings
Aug 5, 2022
Brief communication - Opposition proceedings
Aug 2, 2022
(Electronic) Receipt
Aug 2, 2022
Letter accompanying subsequently filed items
Aug 2, 2022
Request for interpreters during oral proceedings
May 17, 2022
Advice of delivery
May 4, 2022
(Electronic) Receipt
May 4, 2022
Letter accompanying subsequently filed items
May 2, 2022
Advice of delivery
May 2, 2022
Annex to the communication - opposition
May 2, 2022
Information concerning oral proceedings
May 2, 2022
Summons to attend oral proceedings
May 2, 2022
Summons to attend oral proceedings
May 2, 2022
Transmittal of decision / summons - opposition
May 2, 2022
Transmittal of decision / summons - opposition
Apr 11, 2022
Brief communication - Opposition proceedings
Apr 6, 2022
(Electronic) Receipt
Apr 6, 2022
Letter accompanying subsequently filed items
Apr 6, 2022
Letter regarding the opposition procedure (no time limit)
Feb 11, 2022
Brief communication - Opposition proceedings
Feb 8, 2022
(Electronic) Receipt
Feb 8, 2022
Letter accompanying subsequently filed items
Feb 8, 2022
Letter regarding the opposition procedure (no time limit)
Dec 16, 2021
Brief communication - Opposition proceedings
Dec 10, 2021
(Electronic) Receipt
Dec 10, 2021
Letter accompanying subsequently filed items
Dec 10, 2021
Reply of the patent proprietor to the notice(s) of opposition
Aug 10, 2021
Communication of a notice of opposition and request to file observations
Aug 10, 2021
Notice of further oppositions to opponent(s)
Jul 2, 2021
Communication of a notice of opposition - first information to patent proprietor
Jun 29, 2021
(Electronic) Receipt
Jun 29, 2021
Citation in opposition procedure - 001
Jun 29, 2021
Citation in opposition procedure - 001
Jun 29, 2021
Citation in opposition procedure - 002
Jun 29, 2021
Citation in opposition procedure - 002
Jun 29, 2021
Citation in opposition procedure - 003
Jun 29, 2021
Citation in opposition procedure - 004
Jun 29, 2021
Citation in opposition procedure - 005
Jun 29, 2021
Citation in opposition procedure - 006
Jun 29, 2021
Citation in opposition procedure - 007
Jun 29, 2021
Citation in opposition procedure - 008
Jun 29, 2021
Citation in opposition procedure - 009
Jun 29, 2021
Citation in opposition procedure - 009
Jun 29, 2021
Citation in opposition procedure - 010
Jun 29, 2021
Citation in opposition procedure - 011
Jun 29, 2021
Citation in opposition procedure - 011
Jun 29, 2021
Citation in opposition procedure - 012
Jun 29, 2021
Citation in opposition procedure - 013
Jun 29, 2021
Citation in opposition procedure - 013
Jun 29, 2021
Citation in opposition procedure - 014
Jun 29, 2021
Citation in opposition procedure - 015
Jun 29, 2021
Citation in opposition procedure - 016
Jun 29, 2021
Consolidated list of cited opposition documents
Jun 29, 2021
Notice of opposition
Jun 29, 2021
Notice of opposition
Feb 23, 2021
Document concerning representation
Nov 9, 2020
Transmission of the certificate for a European patent pursuant to Rule 74 EPC
Oct 1, 2020
Decision to grant a European patent
Sep 17, 2020
(Electronic) Receipt
Sep 17, 2020
Filing of the translations of the claims
Sep 17, 2020
French translation of claims
Sep 17, 2020
German translation of the claims
Jul 28, 2020
Bibliographic data of the European patent application
Jul 28, 2020
Communication about intention to grant a European patent
Jul 28, 2020
Intention to grant (signatures)
Jul 28, 2020
Text intended for grant (clean copy)
Jul 28, 2020
Text intended for grant (version for approval)
Jun 23, 2020
Examination started
Jun 17, 2019
(Electronic) Receipt
Jun 17, 2019
Amended claims filed after receipt of (European) search report
Jun 17, 2019
Amended claims with annotations
Jun 17, 2019
Amended description filed after receipt of (European) search report
Jun 17, 2019
Amended description with annotations
Jun 17, 2019
Amendments received before examination
Jun 17, 2019
Letter accompanying subsequently filed items
Jan 2, 2019
Reminder period for payment of examination fee/designation fee and correction of deficiencies in Written Opinion/amendment
Nov 21, 2018
Notification of forthcoming publication
Nov 19, 2018
Communication regarding the transmission of the European search report
Nov 19, 2018
European search opinion
Nov 19, 2018
European search report
Nov 19, 2018
Information on Search Strategy
Jun 15, 2018
Communication to designated inventor
Jun 15, 2018
Communication to designated inventor
May 17, 2018
Acknowledgement of receipt from National Office - R35(4)
Apr 27, 2018
Letter concerning the priority
Apr 27, 2018
Priority document
Apr 24, 2018
Abstract
Apr 24, 2018
Acknowledgement of receipt of electronic submission of the request for grant of a European patent
Apr 24, 2018
Claims
Apr 24, 2018
Description
Apr 24, 2018
Designation of inventor
Apr 24, 2018
Drawings
Apr 24, 2018
Priority search results
Apr 24, 2018
Request for grant of a European patent

EP3415816

VALMET

Application Number: EP18397514A
Filing Date: Apr 24, 2018
Status: Patent Maintained As Amended; Aug 22, 2025
Publication Date: Sep 24, 2025
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