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Method And Device For Regulating The Mixing Ratio Of Combustion Air And Combustion Gas In A Combustion Process

Patent No. EP3663648 (titled "Method And Device For Regulating The Mixing Ratio Of Combustion Air And Combustion Gas In A Combustion Process") was filed by Vaillant on Nov 26, 2019. The application was issued on Aug 31, 2022.

Patent Summary

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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
ROBERT BOSCH	May 31, 2023	-

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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May 19, 2025
Refund of fees
May 15, 2025
F3324 Closure of the appeal proceedings: withdrawal of the appeal/ application/ opposition
May 9, 2025
(Electronic) Receipt
May 9, 2025
Letter regarding the opposition procedure (no time limit)
May 9, 2025
Withdrawal of an appeal
May 8, 2025
(Electronic) Receipt
May 8, 2025
Withdrawal of an appeal
May 8, 2025
Written submission in preparation to/during oral proceedings
Mar 26, 2025
F3204 Communication of the file number to the parties
Mar 26, 2025
F3204 Communication of the file number to the parties
Mar 20, 2025
(Electronic) Receipt
Mar 20, 2025
Letter accompanying subsequently filed items
Mar 20, 2025
Notice of appeal
Jan 20, 2025
Annex to the communication - opposition
Jan 20, 2025
Brief communication - Opposition proceedings
Jan 20, 2025
Decision of the Opposition Division and instruction
Jan 20, 2025
Decision rejecting the opposition
Jan 20, 2025
Decision rejecting the opposition
Jan 20, 2025
Grounds for the decision (Annex) - opposition
Jan 20, 2025
Means of redress
Jan 20, 2025
Minutes of the oral proceedings (Opposition Division) - conclusion of the proceedings
Jan 20, 2025
Minutes of the oral proceedings (Opposition Division) - introduction of the parties
Jan 20, 2025
Provision of a copy of the minutes - opposition procedure
Jan 20, 2025
Provision of a copy of the minutes - opposition procedure
Dec 10, 2024
Information about the result of oral proceedings
Dec 6, 2024
Brief communication - Opposition proceedings
Dec 5, 2024
(Electronic) Receipt
Dec 5, 2024
Authorisation
Dec 5, 2024
Authorisation
Dec 5, 2024
Brief communication - Opposition proceedings
Dec 5, 2024
Written submission in preparation to/during oral proceedings
Dec 4, 2024
(Electronic) Receipt
Dec 4, 2024
Letter accompanying subsequently filed items
Dec 4, 2024
Written submission in preparation to/during oral proceedings
Nov 11, 2024
Brief communication - Opposition proceedings
Nov 7, 2024
Brief communication - Opposition proceedings
Nov 6, 2024
(Electronic) Receipt
Nov 6, 2024
Letter accompanying subsequently filed items
Nov 6, 2024
Request for interpreters during oral proceedings
Nov 4, 2024
(Electronic) Receipt
Nov 4, 2024
Letter accompanying subsequently filed items
Nov 4, 2024
Written submission in preparation to/during oral proceedings
Oct 23, 2024
Brief communication - Opposition proceedings
Oct 18, 2024
(Electronic) Receipt
Oct 18, 2024
Brief communication - Opposition proceedings
Oct 18, 2024
Brief communication - Opposition proceedings
Oct 18, 2024
Letter accompanying subsequently filed items
Oct 18, 2024
Request for interpreters during oral proceedings
Oct 14, 2024
Brief communication - Opposition proceedings
Oct 9, 2024
(Electronic) Receipt
Oct 9, 2024
(Electronic) Receipt
Oct 9, 2024
Brief communication - Opposition proceedings
Oct 9, 2024
Citation in opposition procedure - 009
Oct 9, 2024
Citation in opposition procedure - 010
Oct 9, 2024
Citation in opposition procedure - 011
Oct 9, 2024
Citation in opposition procedure - 012
Oct 9, 2024
Citation in opposition procedure - 012
Oct 9, 2024
Citation in opposition procedure - 013
Oct 9, 2024
Citation in opposition procedure - 013
Oct 9, 2024
Consolidated list of cited opposition documents
Oct 9, 2024
Letter accompanying subsequently filed items
Oct 9, 2024
Written submission in preparation to/during oral proceedings
Feb 15, 2024
Annex to the communication - opposition
Feb 15, 2024
Brief communication - Opposition proceedings
Feb 15, 2024
Brief communication - Opposition proceedings
Feb 15, 2024
Information concerning oral proceedings
Feb 15, 2024
Scanned annex to a communication - opposition procedure
Feb 15, 2024
Summons to attend oral proceedings
Feb 15, 2024
Summons to attend oral proceedings
Oct 18, 2023
Brief communication - Opposition proceedings
Oct 13, 2023
(Electronic) Receipt
Oct 13, 2023
Letter accompanying subsequently filed items
Oct 13, 2023
Reply of the patent proprietor to the notice(s) of opposition
Aug 10, 2023
Brief communication - Opposition proceedings
Aug 10, 2023
Communication of amended entries concerning the representative
Aug 3, 2023
(Electronic) Receipt
Aug 3, 2023
Letter accompanying subsequently filed items
Aug 3, 2023
Submission concerning change of applicant's representative
Jun 15, 2023
Communication of a notice of opposition and request to file observations
Jun 15, 2023
Notice of further oppositions to opponent(s)
Jun 5, 2023
Communication of a notice of opposition - first information to patent proprietor
May 31, 2023
(Electronic) Receipt
May 31, 2023
Citation in opposition procedure - 001
May 31, 2023
Citation in opposition procedure - 002
May 31, 2023
Citation in opposition procedure - 003
May 31, 2023
Citation in opposition procedure - 004
May 31, 2023
Citation in opposition procedure - 005
May 31, 2023
Citation in opposition procedure - 006
May 31, 2023
Citation in opposition procedure - 006
May 31, 2023
Citation in opposition procedure - 007
May 31, 2023
Citation in opposition procedure - 008
May 31, 2023
Notice of opposition
May 31, 2023
Notice of opposition
Sep 13, 2022
Transmission of the certificate for a European patent pursuant to Rule 74 EPC
Aug 4, 2022
Decision to grant a European patent
May 19, 2022
(Electronic) Receipt
May 19, 2022
English translation of the claims
May 19, 2022
Filing of the translations of the claims
May 19, 2022
French translation of claims
Apr 28, 2022
(Electronic) Receipt
Apr 28, 2022
Letter accompanying subsequently filed items
Apr 28, 2022
Reply from applicant/patentee regarding third party observations
Mar 15, 2022
Transmittal of third party observations to applicant
Mar 9, 2022
Citation filed by a third party
Mar 9, 2022
Citation filed by a third party
Mar 9, 2022
Observations by third parties
Feb 11, 2022
Bibliographic data of the European patent application
Feb 11, 2022
Communication about intention to grant a European patent
Feb 11, 2022
Intention to grant (signatures)
Feb 11, 2022
Text intended for grant (clean copy)
Feb 11, 2022
Text intended for grant (version for approval)
Jul 26, 2021
(Electronic) Receipt
Jul 26, 2021
Amended claims with annotations
Jul 26, 2021
Amended description with annotations
Jul 26, 2021
Claims
Jul 26, 2021
Description
Jul 26, 2021
Letter accompanying subsequently filed items
Jul 26, 2021
Reply to communication from the Examining Division
Mar 18, 2021
Annex to the communication
Mar 18, 2021
Communication from the Examining Division
Mar 12, 2021
Examination started
Jan 12, 2021
(Electronic) Receipt
Jan 12, 2021
Letter accompanying subsequently filed items
Jan 12, 2021
Reply to invitation to file a copy of priority search results
Dec 21, 2020
Brief communication to applicant/representative
Dec 16, 2020
(Electronic) Receipt
Dec 16, 2020
(Electronic) Receipt
Dec 16, 2020
Cover letter for submission of priority search results
Dec 16, 2020
Letter accompanying subsequently filed items
Dec 16, 2020
Reply to invitation to file a copy of priority search results
Dec 16, 2020
Statement of non-availability of priority search results
Dec 9, 2020
Invitation to file a copy of search results(priority)
Nov 27, 2020
(Electronic) Receipt
Nov 27, 2020
Amended claims filed after receipt of (European) search report
Nov 27, 2020
Amended claims with annotations
Nov 27, 2020
Amended description filed after receipt of (European) search report
Nov 27, 2020
Amended description with annotations
Nov 27, 2020
Amendments received before examination
Nov 27, 2020
Letter accompanying subsequently filed items
Nov 27, 2020
Priority search results
Jun 16, 2020
Reminder period for payment of examination fee/designation fee and correction of deficiencies in Written Opinion/amendment
May 13, 2020
Notification of forthcoming publication
Apr 21, 2020
Communication regarding the transmission of the European search report
Apr 21, 2020
European search opinion
Apr 21, 2020
European search report
Apr 21, 2020
Information on Search Strategy
Apr 8, 2020
Search started
Feb 25, 2020
(Electronic) Receipt
Feb 25, 2020
Letter accompanying subsequently filed items
Feb 25, 2020
Letter concerning the priority
Feb 21, 2020
Brief communication to applicant/representative
Feb 10, 2020
Letter concerning the priority
Feb 10, 2020
Priority document
Jan 17, 2020
Communication to designated inventor
Jan 17, 2020
Communication to designated inventor
Jan 17, 2020
Communication to designated inventor
Jan 17, 2020
Communication to designated inventor
Dec 17, 2019
Letter concerning the priority
Dec 17, 2019
Priority document
Nov 26, 2019
Abstract
Nov 26, 2019
Acknowledgement of receipt of electronic submission of the request for grant of a European patent
Nov 26, 2019
Claims
Nov 26, 2019
Description
Nov 26, 2019
Designation of inventor
Nov 26, 2019
Drawings
Nov 26, 2019
Request for grant of a European patent

EP3663648

VAILLANT

Application Number: EP19211461A
Filing Date: Nov 26, 2019
Status: Opposition Rejected; May 16, 2025
Publication Date: Aug 31, 2022
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