Turbomachinery Transition Duct For Wide Bypass Ratio Ranges

Patent No. EP3604741 (titled "Turbomachinery Transition Duct For Wide Bypass Ratio Ranges") was filed by Raytheon on May 30, 2019. The application was issued on Oct 20, 2021.

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
SAFRAN AIRCRAFT ENGINES	Jul 18, 2022	CABINET BEAU DE LOMENIE

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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Jul 15, 2025
Refund of fees
Jul 11, 2025
F3324 Closure of the appeal proceedings: withdrawal of the appeal/ application/ opposition
Jul 11, 2025
F3324 Closure of the appeal proceedings: withdrawal of the appeal/ application/ opposition
Jul 4, 2025
(Electronic) Receipt
Jul 4, 2025
Letter accompanying subsequently filed items
Jul 4, 2025
Withdrawal of an appeal
Jul 3, 2025
Composition of the board (T)
Jun 2, 2025
F3345 Forwarding of submissions to parties
May 28, 2025
F3204 Communication of the file number to the parties
May 28, 2025
F3204 Communication of the file number to the parties
May 6, 2025
(Electronic) Receipt
May 6, 2025
Letter accompanying subsequently filed items
May 6, 2025
Notice of appeal
Mar 4, 2025
Annex to the communication - opposition
Mar 4, 2025
Brief communication - Opposition proceedings
Mar 4, 2025
Brief communication - Opposition proceedings
Mar 4, 2025
Decision revoking the European patent
Mar 4, 2025
Decision revoking the European patent
Mar 4, 2025
Grounds for the decision (Annex) - opposition
Mar 4, 2025
Means of redress
Mar 4, 2025
Minutes of the oral proceedings (Opposition Division) - conclusion of the proceedings
Mar 4, 2025
Minutes of the oral proceedings (Opposition Division) - introduction of the parties
Mar 4, 2025
Provision of a copy of the minutes - opposition procedure
Mar 4, 2025
Provision of a copy of the minutes - opposition procedure
Mar 4, 2025
Scanned annex to a communication - opposition procedure
Mar 4, 2025
Scanned annex to a communication - opposition procedure
Feb 28, 2025
Decision of the Opposition Division and instruction
Feb 5, 2025
Information about the result of oral proceedings
Dec 13, 2024
Brief communication - Opposition proceedings
Dec 13, 2024
Brief communication - Opposition proceedings
Dec 5, 2024
(Electronic) Receipt
Dec 5, 2024
(Electronic) Receipt
Dec 5, 2024
(Electronic) Receipt
Dec 5, 2024
Auxiliary request during Opposition procedure
Dec 5, 2024
Auxiliary request during Opposition procedure
Dec 5, 2024
Auxiliary request during Opposition procedure - 03
Dec 5, 2024
Auxiliary request during Opposition procedure - 04
Dec 5, 2024
Citation in opposition procedure - 010
Dec 5, 2024
Citation in opposition procedure - 011
Dec 5, 2024
Consolidated list of cited opposition documents
Dec 5, 2024
Letter accompanying subsequently filed items
Dec 5, 2024
Letter accompanying subsequently filed items
Dec 5, 2024
Letter accompanying subsequently filed items
Dec 5, 2024
Written submission in preparation to/during oral proceedings
Dec 5, 2024
Written submission in preparation to/during oral proceedings
Apr 18, 2024
Annex to the communication - opposition
Apr 18, 2024
Brief communication - Opposition proceedings
Apr 18, 2024
Brief communication - Opposition proceedings
Apr 18, 2024
Brief communication - Opposition proceedings
Apr 18, 2024
Information concerning oral proceedings
Apr 18, 2024
Scanned annex to a communication - opposition procedure
Apr 18, 2024
Summons to attend oral proceedings
Apr 18, 2024
Summons to attend oral proceedings
Oct 4, 2023
Communication of the registration of a transfer or change of name and/or address
Sep 27, 2023
Annexes in respect of a client data request
Sep 27, 2023
Letter accompanying subsequently filed items
Sep 27, 2023
Submission concerning change of applicant's name
Mar 17, 2023
Brief communication - Opposition proceedings
Mar 10, 2023
(Electronic) Receipt
Mar 10, 2023
Citation in opposition procedure - 004
Mar 10, 2023
Citation in opposition procedure - 005
Mar 10, 2023
Citation in opposition procedure - 006
Mar 10, 2023
Citation in opposition procedure - 007
Mar 10, 2023
Citation in opposition procedure - 008
Mar 10, 2023
Citation in opposition procedure - 009
Mar 10, 2023
Letter accompanying subsequently filed items
Mar 10, 2023
Reply from the opponent to submission of proprietor
Dec 21, 2022
Brief communication - Opposition proceedings
Dec 13, 2022
(Electronic) Receipt
Dec 13, 2022
Auxiliary request during Opposition procedure
Dec 13, 2022
Auxiliary request during Opposition procedure
Dec 13, 2022
Auxiliary request during Opposition procedure - 01
Dec 13, 2022
Auxiliary request during Opposition procedure - 02
Dec 13, 2022
Letter accompanying subsequently filed items
Dec 13, 2022
Main request during Opposition procedure
Dec 13, 2022
Main request during Opposition procedure
Dec 13, 2022
Reply of the patent proprietor to the notice(s) of opposition
Aug 3, 2022
Communication of a notice of opposition and request to file observations
Aug 3, 2022
Notice of further oppositions to opponent(s)
Jul 27, 2022
Communication of a notice of opposition - first information to patent proprietor
Jul 18, 2022
(Electronic) Receipt
Jul 18, 2022
Citation in opposition procedure - 001
Jul 18, 2022
Citation in opposition procedure - 002
Jul 18, 2022
Citation in opposition procedure - 002
Jul 18, 2022
Citation in opposition procedure - 003
Jul 18, 2022
Citation in opposition procedure - 003
Jul 18, 2022
Notice of opposition
Jul 18, 2022
Notice of opposition
Nov 3, 2021
Transmission of the certificate for a European patent pursuant to Rule 74 EPC
Sep 23, 2021
Decision to grant a European patent
Sep 13, 2021
(Electronic) Receipt
Sep 13, 2021
Filing of the translations of the claims
Sep 13, 2021
French translation of claims
Sep 13, 2021
German translation of the claims
Sep 13, 2021
Letter accompanying subsequently filed items
May 27, 2021
Bibliographic data of the European patent application
May 27, 2021
Communication about intention to grant a European patent
May 27, 2021
Intention to grant (signatures)
May 27, 2021
Text intended for grant (clean copy)
May 27, 2021
Text intended for grant (version for approval)
Apr 14, 2021
(Electronic) Receipt
Apr 14, 2021
Amended claims with annotations
Apr 14, 2021
Amended description with annotations
Apr 14, 2021
Claims
Apr 14, 2021
Description
Apr 14, 2021
Letter accompanying subsequently filed items
Apr 14, 2021
Request for correction/amendment of the text proposed for grant sent from 01.04.2012
Feb 19, 2021
Communication of the registration of a transfer or change of name and/or address
Feb 8, 2021
Authorisation
Feb 8, 2021
Submission concerning change of applicant's name
Jan 18, 2021
Indication of deficiencies in a request for entry of a change in personal particulars and invitation to correct them
Dec 18, 2020
Annexes in respect of a client data request
Dec 18, 2020
Annexes in respect of a client data request
Dec 18, 2020
Submission concerning change of applicant's name
Dec 10, 2020
Bibliographic data of the European patent application
Dec 10, 2020
Communication about intention to grant a European patent
Dec 10, 2020
Intention to grant (signatures)
Dec 10, 2020
Text intended for grant (clean copy)
Dec 10, 2020
Text intended for grant (version for approval)
Nov 9, 2020
Examination started
Aug 3, 2020
(Electronic) Receipt
Aug 3, 2020
Amended claims filed after receipt of (European) search report
Aug 3, 2020
Amended claims with annotations
Aug 3, 2020
Amended description filed after receipt of (European) search report
Aug 3, 2020
Amended description with annotations
Aug 3, 2020
Amendments received before examination
Aug 3, 2020
Letter accompanying subsequently filed items
Feb 10, 2020
Reminder period for payment of examination fee/designation fee and correction of deficiencies in Written Opinion/amendment
Jan 9, 2020
Notification of forthcoming publication
Nov 28, 2019
Communication regarding the transmission of the European search report
Nov 28, 2019
European search opinion
Nov 28, 2019
European search report
Nov 28, 2019
Information on Search Strategy
Nov 15, 2019
Search started
Jul 23, 2019
Communication to designated inventor
Jun 14, 2019
Confirmation of receipt of (electronically) transmitted priority document
Jun 4, 2019
Priority document (electronically transmitted)
May 30, 2019
Abstract
May 30, 2019
Acknowledgement of receipt of electronic submission of the request for grant of a European patent
May 30, 2019
Claims
May 30, 2019
Description
May 30, 2019
Designation of inventor
May 30, 2019
Drawings
May 30, 2019
Request for grant of a European patent

EP3604741

RAYTHEON

Application Number: EP19177522A
Filing Date: May 30, 2019
Status: Revoked; Jul 25, 2025
Publication Date: Oct 20, 2021
External Links: Slate, Register , Google Patents

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Turbomachinery Transition Duct For Wide Bypass Ratio Ranges

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Dossier Documents

EP3604741