Oil Tank Comprising A Device For Checking The Oil Level

Patent No. EP3327260 (titled "Oil Tank Comprising A Device For Checking The Oil Level") was filed by Safran Aircraft Engines on Nov 24, 2017. The application was issued on Jun 11, 2025.

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
RTX	Apr 8, 2021	DEHNS

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

May 15, 2025
Decision to maintain the European patent in amended form
May 15, 2025
Decision to maintain the European patent in amended form
May 5, 2025
(Electronic) Receipt
May 5, 2025
English translation of the claims
May 5, 2025
German translation of the claims
May 5, 2025
Letter accompanying subsequently filed items
Apr 29, 2025
Miscellaneous requests concerning client data
Mar 17, 2025
Communication of bibliographic data
Mar 17, 2025
Communication to opponent concerning maintenance
Mar 17, 2025
Communication with request to file translations
Jan 20, 2025
Maintenance of the patent with the documents specified in the final decision
Jan 16, 2025
Decision of the Board of Appeal
Jan 16, 2025
F3032 Notification(s) of the decision
Jan 16, 2025
F3032 Notification(s) of the decision
Dec 20, 2024
F3013 Oral Proceedings: Forwarding minutes
Dec 20, 2024
F3013 Oral Proceedings: Forwarding minutes
Dec 20, 2024
F3315 Oral Proceedings: Minutes (Appellant : Proprietor)
Dec 10, 2024
F3345 Forwarding of submissions to parties
Dec 5, 2024
(Electronic) Receipt
Dec 5, 2024
Letter accompanying subsequently filed items
Dec 5, 2024
Submission concerning change of applicant's representative
Nov 11, 2024
F3018 Oral proceedings: Confirmation interpreters
Nov 11, 2024
F3018 Oral proceedings: Confirmation interpreters
Jul 5, 2024
Letter accompanying subsequently filed items
Jul 2, 2024
F3345 Forwarding of submissions to parties
Jun 24, 2024
(Electronic) Receipt
Jun 24, 2024
Annexes in respect of a client data request
Jun 24, 2024
Letter accompanying subsequently filed items
May 3, 2024
F3017 Oral Proceedings: Notification of cancellation/postponing
May 3, 2024
F3017 Oral Proceedings: Notification of cancellation/postponing
Apr 29, 2024
F3014 Oral Proceedings: Order cancelling/postponing
Apr 22, 2024
F3022 Oral proceedings: change of board composition
Apr 22, 2024
F3022 Oral proceedings: change of board composition
Apr 17, 2024
F3303.16 Change of composition of the Board (T)
Feb 14, 2024
F3305 Communication of the Board of Appeal (ex parte/ inter partes)
Feb 14, 2024
F3305 Communication of the Board of Appeal (ex parte/ inter partes)
Nov 10, 2023
F3345 Forwarding of submissions to parties
Nov 7, 2023
(Electronic) Receipt
Nov 7, 2023
Letter accompanying subsequently filed items
Nov 7, 2023
Letter dealing with oral proceedings during the appeal procedure
Oct 27, 2023
Advice of delivery
Oct 24, 2023
F3011.1 Oral Proceedings: summons
Oct 24, 2023
F3011.1 Oral Proceedings: summons
Oct 24, 2023
F3305 Communication of the Board of Appeal (ex parte/ inter partes)
Oct 24, 2023
F3305 Communication of the Board of Appeal (ex parte/ inter partes)
Oct 19, 2023
F3010 Oral proceedings: order for summons
Oct 6, 2023
Composition of the board (T)
Jul 27, 2023
F3056 Communication: Change of Board due to the technical nature of the appeal
Jul 27, 2023
F3056 Communication: Change of Board due to the technical nature of the appeal
Jul 27, 2023
F3313 Order: change of Board due to the technical aspects of the appeal
Apr 12, 2023
F3345 Forwarding of submissions to parties
Apr 4, 2023
(Electronic) Receipt
Apr 4, 2023
Letter accompanying subsequently filed items
Apr 4, 2023
Reply to appeal
Nov 24, 2022
F3344 Setting time limit for reply/ file observations to appeal (inter partes)
Nov 18, 2022
(Electronic) Receipt
Nov 18, 2022
Amended claims with annotations
Nov 18, 2022
Amended claims with annotations
Nov 18, 2022
Amended claims with annotations
Nov 18, 2022
Amended claims with annotations
Nov 18, 2022
Amended claims with annotations
Nov 18, 2022
Auxiliary request during appeals procedure - 01
Nov 18, 2022
Auxiliary request during appeals procedure - 02
Nov 18, 2022
Claims
Nov 18, 2022
Claims
Nov 18, 2022
Claims
Nov 18, 2022
Claims
Nov 18, 2022
Letter accompanying subsequently filed items
Nov 18, 2022
Statement of grounds of appeal
Sep 20, 2022
F3204 Communication of the file number to the parties
Sep 20, 2022
F3204 Communication of the file number to the parties
Sep 13, 2022
(Electronic) Receipt
Sep 13, 2022
Letter accompanying subsequently filed items
Sep 13, 2022
Notice of appeal
Jul 25, 2022
(Electronic) Receipt
Jul 25, 2022
Advice of delivery
Jul 25, 2022
Letter accompanying subsequently filed items
Jul 21, 2022
(Electronic) Receipt
Jul 21, 2022
Advice of delivery
Jul 21, 2022
Letter accompanying subsequently filed items
Jul 13, 2022
Druckexemplar in opposition procedure
Jul 13, 2022
Interlocutory decision in opposition proceedings
Jul 13, 2022
Provision of a copy of the minutes - opposition procedure
Jul 13, 2022
Transmittal of decision / summons - opposition
Jul 13, 2022
Transmittal of decision / summons - opposition
May 11, 2022
Information about the result of oral proceedings
Apr 21, 2022
Brief communication - Opposition proceedings
Apr 11, 2022
(Electronic) Receipt
Apr 11, 2022
Letter accompanying subsequently filed items
Apr 11, 2022
Written submission in preparation to/during oral proceedings
Apr 7, 2022
Brief communication - Opposition proceedings
Mar 30, 2022
Brief communication - Opposition proceedings
Mar 24, 2022
(Electronic) Receipt
Mar 24, 2022
Letter accompanying subsequently filed items
Mar 24, 2022
Request for interpreters during oral proceedings
Mar 23, 2022
Brief communication - Opposition proceedings
Mar 17, 2022
Brief communication - Opposition proceedings
Mar 16, 2022
Brief communication - Opposition proceedings
Mar 15, 2022
(Electronic) Receipt
Mar 15, 2022
Letter accompanying subsequently filed items
Mar 15, 2022
Written submission in preparation to/during oral proceedings
Mar 11, 2022
(Electronic) Receipt
Mar 11, 2022
Request for interpreters during oral proceedings
Mar 10, 2022
(Electronic) Receipt
Mar 10, 2022
Auxiliary request during Opposition procedure
Mar 10, 2022
Auxiliary request during Opposition procedure
Mar 10, 2022
Auxiliary request during Opposition procedure - 02
Mar 10, 2022
Auxiliary request during Opposition procedure - 03
Mar 10, 2022
Letter accompanying subsequently filed items
Mar 10, 2022
Written submission in preparation to/during oral proceedings
Dec 20, 2021
Notification concerning the date of oral proceedings
Dec 20, 2021
Notification concerning the date of oral proceedings
Nov 16, 2021
(Electronic) Receipt
Nov 16, 2021
Advice of delivery
Nov 16, 2021
Letter accompanying subsequently filed items
Nov 15, 2021
(Electronic) Receipt
Nov 15, 2021
Advice of delivery
Nov 15, 2021
Letter accompanying subsequently filed items
Oct 26, 2021
Annex to the communication - opposition
Oct 26, 2021
Information concerning oral proceedings
Oct 26, 2021
Summons to attend oral proceedings
Oct 26, 2021
Summons to attend oral proceedings
Oct 26, 2021
Transmittal of decision / summons - opposition
Oct 26, 2021
Transmittal of decision / summons - opposition
Aug 11, 2021
Brief communication - Opposition proceedings
Aug 5, 2021
(Electronic) Receipt
Aug 5, 2021
Auxiliary request during Opposition procedure
Aug 5, 2021
Auxiliary request during Opposition procedure - 01
Aug 5, 2021
Letter accompanying subsequently filed items
Aug 5, 2021
Main request during Opposition procedure
Aug 5, 2021
Reply of the patent proprietor to the notice(s) of opposition
May 14, 2021
Communication of amended entries concerning the representative
May 6, 2021
Submission concerning change of applicant's representative
Apr 22, 2021
Communication of a notice of opposition and request to file observations
Apr 22, 2021
Notice of further oppositions to opponent(s)
Apr 14, 2021
Communication of a notice of opposition - first information to patent proprietor
Apr 8, 2021
(Electronic) Receipt
Apr 8, 2021
Citation in opposition procedure - 001
Apr 8, 2021
Citation in opposition procedure - 002
Apr 8, 2021
Citation in opposition procedure - 003
Apr 8, 2021
Citation in opposition procedure - 004
Apr 8, 2021
Consolidated list of cited opposition documents
Apr 8, 2021
Notice of opposition
Apr 8, 2021
Notice of opposition
Jul 20, 2020
Transmission of the certificate for a European patent pursuant to Rule 74 EPC
Jun 12, 2020
Decision to grant a European patent
May 29, 2020
(Electronic) Receipt
May 29, 2020
English translation of the claims
May 29, 2020
Filing of the translations of the claims
May 29, 2020
German translation of the claims
May 29, 2020
Letter accompanying subsequently filed items
May 6, 2020
Bibliographic data of the European patent application
May 6, 2020
Communication about intention to grant a European patent
May 6, 2020
Intention to grant (signatures)
May 6, 2020
Text intended for grant (clean copy)
May 6, 2020
Text intended for grant (version for approval)
Apr 8, 2020
Communication of amended entries concerning the representative
Apr 6, 2020
(Electronic) Receipt
Apr 6, 2020
Amended claims with annotations
Apr 6, 2020
Claims
Apr 6, 2020
Letter accompanying subsequently filed items
Apr 6, 2020
Reply to communication from the Examining Division
Apr 2, 2020
Annex to the communication
Apr 2, 2020
Communication from the Examining Division
Apr 2, 2020
Letter accompanying subsequently filed items
Apr 2, 2020
Submission concerning change of applicant's representative
Mar 26, 2020
Examination started
Mar 25, 2019
Submission concerning change of applicant's representative
Nov 19, 2018
(Electronic) Receipt
Nov 19, 2018
Letter accompanying subsequently filed items
Oct 31, 2018
(Electronic) Receipt
Oct 31, 2018
Letter accompanying subsequently filed items
Oct 31, 2018
Reply to Written Opinion prepared by the EPO
Jun 5, 2018
Reminder period for payment of examination fee/designation fee and correction of deficiencies in Written Opinion/amendment
May 30, 2018
Refund of fees
May 3, 2018
Notification of forthcoming publication
Apr 16, 2018
Communication regarding the transmission of the European search report
Apr 16, 2018
European search opinion
Apr 16, 2018
European search report
Apr 16, 2018
Information on Search Strategy
Apr 5, 2018
Search started
Jan 17, 2018
Communication to designated inventor
Jan 17, 2018
Communication to designated inventor
Jan 17, 2018
Communication to designated inventor
Dec 20, 2017
Letter accompanying subsequently filed items
Dec 20, 2017
Priority document
Dec 11, 2017
Priority search results copy provided by EPO
Nov 24, 2017
Abstract
Nov 24, 2017
Acknowledgement of receipt of electronic submission of the request for grant of a European patent
Nov 24, 2017
Claims
Nov 24, 2017
Description
Nov 24, 2017
Designation of inventor
Nov 24, 2017
Drawings
Nov 24, 2017
Priority search results
Nov 24, 2017
Request for grant of a European patent

EP3327260

SAFRAN AIRCRAFT ENGINES

Application Number: EP17203505A
Filing Date: Nov 24, 2017
Status: Patent Maintained As Amended; May 9, 2025
Publication Date: Jun 11, 2025
External Links: Slate, Register , Google Patents

IP Verse

Oil Tank Comprising A Device For Checking The Oil Level

Patent Summary

Patent Family

Patent Oppositions

Dossier Documents

EP3327260