Once-Through Evaporator Systems

Patent No. EP3495730 (titled "Once-Through Evaporator Systems") was filed by General Electric Technology on Dec 8, 2017. The application was issued on Jan 24, 2024.

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
SIEMENS ENERGY	Oct 24, 2024	-

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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Jan 13, 2026
Notification concerning the date of oral proceedings
Jan 13, 2026
Notification concerning the date of oral proceedings
Nov 18, 2025
Brief communication - Opposition proceedings
Nov 13, 2025
(Electronic) Receipt
Nov 13, 2025
Letter accompanying subsequently filed items
Nov 13, 2025
Written submission in preparation to/during oral proceedings
Aug 20, 2025
Brief communication - Opposition proceedings
Aug 20, 2025
Communication of the registration of a transfer or change of name and/or address
Aug 4, 2025
Annexes in respect of a client data request
Aug 4, 2025
Submission concerning change of applicant's name
Jul 25, 2025
Annex to the communication - opposition
Jul 25, 2025
Information concerning oral proceedings
Jul 25, 2025
Scanned annex to a communication - opposition procedure
Jul 25, 2025
Summons to attend oral proceedings
Jul 25, 2025
Summons to attend oral proceedings
Jun 5, 2025
Miscellaneous requests concerning client data
Mar 13, 2025
Brief communication - Opposition proceedings
Mar 7, 2025
(Electronic) Receipt
Mar 7, 2025
Auxiliary request during Opposition procedure
Mar 7, 2025
Auxiliary request during Opposition procedure - 01
Mar 7, 2025
Letter accompanying subsequently filed items
Mar 7, 2025
Reply of the patent proprietor to the notice(s) of opposition
Dec 16, 2024
Brief communication - Opposition proceedings
Dec 16, 2024
Communication confirming withdrawal from representation
Dec 16, 2024
Communication of amended entries concerning the representative
Dec 10, 2024
(Electronic) Receipt
Dec 10, 2024
Letter accompanying subsequently filed items
Dec 10, 2024
Submission concerning change of proprietor's representative
Nov 7, 2024
Communication of a notice of opposition and request to file observations
Nov 7, 2024
Notice of further oppositions to opponent(s)
Oct 29, 2024
Communication of a notice of opposition - first information to patent proprietor
Oct 24, 2024
(Electronic) Receipt
Oct 24, 2024
Citation in opposition procedure
Oct 24, 2024
Citation in opposition procedure - 001
Oct 24, 2024
Citation in opposition procedure - 002
Oct 24, 2024
Citation in opposition procedure - 003
Oct 24, 2024
Citation in opposition procedure - 004
Oct 24, 2024
Citation in opposition procedure - 005
Oct 24, 2024
Citation in opposition procedure - 006
Oct 24, 2024
Citation in opposition procedure - 007
Oct 24, 2024
Citation in opposition procedure - 008
Oct 24, 2024
Citation in opposition procedure - 009
Oct 24, 2024
Citation in opposition procedure - 010
Oct 24, 2024
Citation in opposition procedure - 011
Oct 24, 2024
Citation in opposition procedure - 012
Oct 24, 2024
Citation in opposition procedure - 013
Oct 24, 2024
Citation in opposition procedure - 014
Oct 24, 2024
Citation in opposition procedure - 015
Oct 24, 2024
Citation in opposition procedure - 016
Oct 24, 2024
Citation in opposition procedure - 017
Oct 24, 2024
Citation in opposition procedure - 018
Oct 24, 2024
Consolidated list of cited opposition documents
Oct 24, 2024
Notice of opposition
Oct 24, 2024
Notice of opposition
Feb 6, 2024
Transmission of the certificate for a European patent pursuant to Rule 74 EPC
Jan 5, 2024
Decision to grant a European patent
Nov 23, 2023
(Electronic) Receipt
Nov 23, 2023
Filing of the translations of the claims
Nov 23, 2023
French translation of claims
Nov 23, 2023
German translation of the claims
Nov 23, 2023
Submission concerning change of applicant's representative
Nov 3, 2023
Communication confirming withdrawal from representation
Nov 3, 2023
Communication of amended entries concerning the representative
Oct 27, 2023
Submission concerning change of applicant's representative
Oct 6, 2023
Annex to the communication about intention to grant a European patent
Oct 6, 2023
Bibliographic data of the European patent application
Oct 6, 2023
Communication about intention to grant a European patent
Oct 6, 2023
Intention to grant (signatures)
Oct 6, 2023
Text intended for grant (clean copy)
Oct 6, 2023
Text intended for grant (version for approval)
Sep 5, 2023
(Electronic) Receipt
Sep 5, 2023
Amended claims with annotations
Sep 5, 2023
Claims
Sep 5, 2023
Letter accompanying subsequently filed items
Sep 5, 2023
Request for correction/amendment of the text proposed for grant sent from 01.04.2012
May 10, 2023
Annex to the communication about intention to grant a European patent
May 10, 2023
Bibliographic data of the European patent application
May 10, 2023
Communication about intention to grant a European patent
May 10, 2023
Intention to grant (signatures)
May 10, 2023
Text intended for grant (clean copy)
May 10, 2023
Text intended for grant (version for approval)
Sep 12, 2022
(Electronic) Receipt
Sep 12, 2022
Amended claims with annotations
Sep 12, 2022
Amended description with annotations
Sep 12, 2022
Claims
Sep 12, 2022
Description
Sep 12, 2022
Letter accompanying subsequently filed items
Sep 12, 2022
Reply to communication from the Examining Division
Jul 1, 2022
Grant of extension of time limit (examination procedure)
Jun 28, 2022
Letter accompanying subsequently filed items
Jun 28, 2022
Request for extension of time limit to communication from the Examining Division
Mar 2, 2022
Annex to the communication
Mar 2, 2022
Communication from the Examining Division
Feb 25, 2022
Examination started
Apr 7, 2021
Communication of the registration of a transfer or change of name and/or address
Mar 26, 2021
Submission concerning change of applicant's address
Dec 9, 2019
(Electronic) Receipt
Dec 9, 2019
Amended claims filed after receipt of (European) search report
Dec 9, 2019
Amended claims with annotations
Dec 9, 2019
Amended description filed after receipt of (European) search report
Dec 9, 2019
Amended description with annotations
Dec 9, 2019
Amended drawings filed after receipt of (European) search report
Dec 9, 2019
Amendments received before examination
Dec 9, 2019
Letter accompanying subsequently filed items
Jun 17, 2019
Reminder period for payment of examination fee/designation fee and correction of deficiencies in Written Opinion/amendment
May 21, 2019
Confirmation of revocation of automatic debit order
May 16, 2019
Communication of amended entries concerning the representative
May 16, 2019
Letter relating to the automatic debiting procedure
May 15, 2019
Notification of forthcoming publication
May 9, 2019
Submission concerning change of applicant's representative
Feb 13, 2019
Request concerning the applicant/representative
May 28, 2018
Communication regarding the transmission of the European search report
May 28, 2018
European search opinion
May 28, 2018
European search report
May 28, 2018
Information on Search Strategy
May 8, 2018
Search started
Mar 2, 2018
Communication to designated inventor
Mar 2, 2018
Communication to designated inventor
Dec 8, 2017
Abstract
Dec 8, 2017
Acknowledgement of receipt of electronic submission of the request for grant of a European patent
Dec 8, 2017
Claims
Dec 8, 2017
Description
Dec 8, 2017
Designation of inventor
Dec 8, 2017
Drawings
Dec 8, 2017
Request for grant of a European patent

EP3495730

GENERAL ELECTRIC TECHNOLOGY

Application Number: EP17206082A
Filing Date: Dec 8, 2017
Status: Granted And Under Opposition; Dec 22, 2023
Publication Date: Jan 24, 2024
External Links: Slate, Register , Google Patents

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Once-Through Evaporator Systems

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EP3495730