Air-Oil Heat Exchangers With Minimum Bypass Flow Pressure Loss

Patent No. EP2971664 (titled "Air-Oil Heat Exchangers With Minimum Bypass Flow Pressure Loss") was filed by Raytheon on Dec 18, 2013. The application was issued on Jan 10, 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
SAFRAN AIRCRAFT ENGINES	Dec 13, 2021	REGIMBEAU

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

Get instant alerts for new documents

Dec 14, 2023
Decision to maintain the European patent in amended form
Dec 14, 2023
Decision to maintain the European patent in amended form
Dec 4, 2023
(Electronic) Receipt
Dec 4, 2023
Filing of the translation of the amended claims
Dec 4, 2023
French translation of claims
Dec 4, 2023
German translation of the claims
Dec 4, 2023
Letter accompanying subsequently filed items
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
Sep 15, 2023
Communication of bibliographic data
Sep 15, 2023
Communication to opponent concerning maintenance
Sep 15, 2023
Communication with request to file translations
Sep 12, 2023
Refund of fees
Sep 8, 2023
Maintenance of the patent with the documents specified in the final decision
Sep 7, 2023
F3324 Closure of the appeal proceedings: withdrawal of the appeal/ application/ opposition
Sep 7, 2023
F3324 Closure of the appeal proceedings: withdrawal of the appeal/ application/ opposition
Sep 4, 2023
Composition of the board (T)
Aug 29, 2023
(Electronic) Receipt
Aug 29, 2023
Withdrawal of an appeal
Jul 27, 2023
F3204 Communication of the file number to the parties
Jul 27, 2023
F3204 Communication of the file number to the parties
Jul 21, 2023
(Electronic) Receipt
Jul 21, 2023
Letter accompanying subsequently filed items
Jul 21, 2023
Notice of appeal
May 22, 2023
Annex to the communication - opposition
May 22, 2023
Decision of the Opposition Division and instruction
May 22, 2023
Druckexemplar in opposition procedure
May 22, 2023
Grounds for the decision (Annex) - opposition
May 22, 2023
Interlocutory decision in opposition proceedings
May 22, 2023
Interlocutory decision in opposition proceedings
May 22, 2023
Means of redress
May 22, 2023
Minutes of the oral proceedings (Opposition Division) - conclusion of the proceedings
May 22, 2023
Minutes of the oral proceedings (Opposition Division) - introduction of the parties
May 22, 2023
Provision of a copy of the minutes - opposition procedure
May 22, 2023
Provision of a copy of the minutes - opposition procedure
May 22, 2023
Transmittal of decision / summons - opposition
May 22, 2023
Transmittal of decision / summons - opposition
Mar 30, 2023
Information about the result of oral proceedings
Mar 29, 2023
(Electronic) Receipt
Mar 29, 2023
Letter accompanying subsequently filed items
Mar 29, 2023
Written submission in preparation to/during oral proceedings
Mar 20, 2023
Brief communication - Opposition proceedings
Mar 17, 2023
(Electronic) Receipt
Mar 17, 2023
Letter accompanying subsequently filed items
Mar 17, 2023
Written submission in preparation to/during oral proceedings
Feb 9, 2023
Brief communication - Opposition proceedings
Feb 6, 2023
Brief communication - Opposition proceedings
Feb 2, 2023
(Electronic) Receipt
Feb 2, 2023
Brief communication - Opposition proceedings
Feb 2, 2023
Letter accompanying subsequently filed items
Feb 2, 2023
Request for interpreters during oral proceedings
Jan 30, 2023
(Electronic) Receipt
Jan 30, 2023
Any annexes (other than citation) to an opposition letter
Jan 30, 2023
Any annexes (other than citation) to an opposition letter
Jan 30, 2023
Letter accompanying subsequently filed items
Jan 30, 2023
Written submission in preparation to/during oral proceedings
Jan 25, 2023
(Electronic) Receipt
Jan 25, 2023
Letter accompanying subsequently filed items
Jan 25, 2023
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 22, 2022
Brief communication - Opposition proceedings
Nov 14, 2022
(Electronic) Receipt
Nov 14, 2022
Auxiliary request during Opposition procedure
Nov 14, 2022
Auxiliary request during Opposition procedure - 03
Nov 14, 2022
Letter accompanying subsequently filed items
Nov 14, 2022
Written submission in preparation to/during oral proceedings
Sep 2, 2022
Advice of delivery
Sep 1, 2022
(Electronic) Receipt
Sep 1, 2022
Advice of delivery
Sep 1, 2022
Letter accompanying subsequently filed items
Aug 31, 2022
Annex to the communication - opposition
Aug 31, 2022
Information concerning oral proceedings
Aug 31, 2022
Scanned annex to a communication - opposition procedure
Aug 31, 2022
Summons to attend oral proceedings
Aug 31, 2022
Summons to attend oral proceedings
Aug 31, 2022
Transmittal of decision / summons - opposition
Aug 31, 2022
Transmittal of decision / summons - opposition
Jul 14, 2022
Brief communication - Opposition proceedings
Jul 8, 2022
(Electronic) Receipt
Jul 8, 2022
Letter accompanying subsequently filed items
Jul 8, 2022
Reply from the opponent to submission of proprietor
May 27, 2022
Brief communication - Opposition proceedings
May 19, 2022
(Electronic) Receipt
May 19, 2022
Auxiliary request during Opposition procedure
May 19, 2022
Auxiliary request during Opposition procedure
May 19, 2022
Auxiliary request during Opposition procedure - 01
May 19, 2022
Auxiliary request during Opposition procedure - 02
May 19, 2022
Letter accompanying subsequently filed items
May 19, 2022
Reply of the patent proprietor to the notice(s) of opposition
Jan 12, 2022
Communication of a notice of opposition and request to file observations
Jan 12, 2022
Notice of further oppositions to opponent(s)
Dec 20, 2021
Communication of a notice of opposition - first information to patent proprietor
Dec 13, 2021
(Electronic) Receipt
Dec 13, 2021
Citation in opposition procedure - 001
Dec 13, 2021
Citation in opposition procedure - 002
Dec 13, 2021
Citation in opposition procedure - 003
Dec 13, 2021
Citation in opposition procedure - 004
Dec 13, 2021
Citation in opposition procedure - 005
Dec 13, 2021
Citation in opposition procedure - 006
Dec 13, 2021
Citation in opposition procedure - 007
Dec 13, 2021
Citation in opposition procedure - 008
Dec 13, 2021
Citation in opposition procedure - 009
Dec 13, 2021
Consolidated list of cited opposition documents
Dec 13, 2021
Notice of opposition
Dec 13, 2021
Notice of opposition
Mar 29, 2021
Transmission of the certificate for a European patent pursuant to Rule 74 EPC
Mar 4, 2021
Communication concerning a request to change bibliographic data after the decision to grant/decision to maintain the patent in a
Feb 19, 2021
Communication of the registration of a transfer or change of name and/or address
Feb 18, 2021
Decision to grant a European patent
Feb 9, 2021
(Electronic) Receipt
Feb 9, 2021
Filing of the translations of the claims
Feb 9, 2021
French translation of claims
Feb 9, 2021
German translation of the claims
Feb 9, 2021
Letter accompanying subsequently filed items
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
Oct 23, 2020
Annex to the communication about intention to grant a European patent
Oct 23, 2020
Bibliographic data of the European patent application
Oct 23, 2020
Communication about intention to grant a European patent
Oct 23, 2020
Intention to grant (signatures)
Oct 23, 2020
Text intended for grant (clean copy)
Oct 23, 2020
Text intended for grant (version for approval)
Aug 26, 2020
(Electronic) Receipt
Aug 26, 2020
Amended claims with annotations
Aug 26, 2020
Amended claims with annotations
Aug 26, 2020
Amended description with annotations
Aug 26, 2020
Amended description with annotations
Aug 26, 2020
Claims
Aug 26, 2020
Claims
Aug 26, 2020
Description
Aug 26, 2020
Description
Aug 26, 2020
Letter accompanying subsequently filed items
Aug 26, 2020
Reply to communication from the Examining Division
Apr 17, 2020
Annex to the communication
Apr 17, 2020
Communication from the Examining Division
Apr 8, 2020
Examination started
Jan 24, 2020
Notification regarding date of start of examination with possibility to withdraw
May 28, 2018
Communication of amended entries concerning the representative
May 17, 2018
Submission concerning change of applicant's representative
May 15, 2017
(Electronic) Receipt
May 15, 2017
Amended claims filed after receipt of (European) search report
May 15, 2017
Amended claims filed after receipt of (European) search report
May 15, 2017
Amended claims with annotations
May 15, 2017
Amended claims with annotations
May 15, 2017
Amended description filed after receipt of (European) search report
May 15, 2017
Amended description filed after receipt of (European) search report
May 15, 2017
Amended description with annotations
May 15, 2017
Amended description with annotations
May 15, 2017
Amendments received before examination
May 15, 2017
Letter accompanying subsequently filed items
Nov 4, 2016
Invitation to declare maintenance of the application and to correct deficiencies in the Written Opinion/amend application
Oct 17, 2016
Communication regarding the transmission of the European search report
Oct 17, 2016
European search opinion
Oct 17, 2016
Information on Search Strategy
Oct 17, 2016
Supplementary European search report
Oct 10, 2016
Search started
Sep 21, 2016
Communication of the registration of a transfer or change of name and/or address
Sep 16, 2016
Submission concerning change of applicant's address
Sep 15, 2016
Submission concerning change of applicant's address
Apr 29, 2016
(Electronic) Receipt
Apr 29, 2016
Amended claims filed after receipt of (European) search report
Apr 29, 2016
Amended claims with annotations
Apr 29, 2016
Amendments received before examination
Apr 29, 2016
Letter accompanying subsequently filed items
Dec 23, 2015
Notification on forthcoming publication of bibliographic data
Oct 23, 2015
Communication regarding possible amendment of the application/payment of claims fee
Oct 20, 2015
Communication to designated inventor
Oct 20, 2015
Communication to designated inventor
Oct 2, 2015
Copy of the international preliminary report on patentability
Sep 24, 2015
(Electronic) Receipt
Sep 24, 2015
Request for entry into the European phase
Jul 22, 2015
Information on entry into European phase
Oct 7, 2014
Priority document (electronically transmitted)
Sep 18, 2014
Copy of the international search report
Sep 18, 2014
Published international application - A1

EP2971664

RAYTHEON

Application Number: EP13878400A
Filing Date: Dec 18, 2013
Status: Patent Maintained As Amended; Dec 8, 2023
Publication Date: Jan 10, 2024
External Links: Slate, Register , Google Patents

IP Verse

Air-Oil Heat Exchangers With Minimum Bypass Flow Pressure Loss

Patent Summary

Patent Family

Patent Oppositions

Dossier Documents

EP2971664