Air Cleaner Assemblies And Cartridge

Patent No. EP3471856 (titled "Air Cleaner Assemblies And Cartridge") was filed by Donaldson on Jun 16, 2017. The application was issued on Jul 27, 2022.

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
MANN HUMMEL	Apr 27, 2023	MAIWALD

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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Aug 4, 2025
Communication to the parties concerning the termination of the opposition proceedings (opponent)
Aug 4, 2025
Communication to the parties concerning the termination of the opposition proceedings (proprietor)
Apr 28, 2025
Brief communication - Opposition proceedings
Apr 28, 2025
Brief communication - Opposition proceedings
Apr 28, 2025
Decision of the Opposition Division and instruction
Apr 28, 2025
Decision revoking the European patent
Apr 28, 2025
Decision revoking the European patent
Apr 28, 2025
Grounds for the decision (Annex) - opposition
Apr 28, 2025
Means of redress
Apr 28, 2025
Scanned annex to a communication - opposition procedure
Mar 11, 2025
Brief communication - Opposition proceedings
Mar 11, 2025
Notification concerning the date of oral proceedings
Mar 11, 2025
Notification concerning the date of oral proceedings
Mar 6, 2025
(Electronic) Receipt
Mar 6, 2025
Letter accompanying subsequently filed items
Mar 6, 2025
Written submission in preparation to/during oral proceedings
Jan 23, 2025
Brief communication - Opposition proceedings
Jan 20, 2025
Request for interpreters during oral proceedings
Jun 25, 2024
Annex to the communication - opposition
Jun 25, 2024
Brief communication - Opposition proceedings
Jun 25, 2024
Brief communication - Opposition proceedings
Jun 25, 2024
Information concerning oral proceedings
Jun 25, 2024
Scanned annex to a communication - opposition procedure
Jun 25, 2024
Summons to attend oral proceedings
Jun 25, 2024
Summons to attend oral proceedings
Jun 17, 2024
Notification concerning the date of oral proceedings
Jun 17, 2024
Notification concerning the date of oral proceedings
Jun 13, 2024
Brief communication - Opposition proceedings
Jun 10, 2024
(Electronic) Receipt
Jun 10, 2024
Any annexes (other than citation) to an opposition letter
Jun 10, 2024
Letter accompanying subsequently filed items
Jun 10, 2024
Oral proceedings: Request for postponement
May 31, 2024
Annex to the communication - opposition
May 31, 2024
Brief communication - Opposition proceedings
May 31, 2024
Brief communication - Opposition proceedings
May 31, 2024
Information concerning oral proceedings
May 31, 2024
Scanned annex to a communication - opposition procedure
May 31, 2024
Summons to attend oral proceedings
May 31, 2024
Summons to attend oral proceedings
Mar 15, 2024
Brief communication - Opposition proceedings
Mar 11, 2024
(Electronic) Receipt
Mar 11, 2024
Letter accompanying subsequently filed items
Mar 11, 2024
Reply from the opponent to submission of proprietor
Sep 28, 2023
Brief communication - Opposition proceedings
Sep 25, 2023
(Electronic) Receipt
Sep 25, 2023
Auxiliary request during Opposition procedure
Sep 25, 2023
Auxiliary request during Opposition procedure
Sep 25, 2023
Auxiliary request during Opposition procedure
Sep 25, 2023
Auxiliary request during Opposition procedure
Sep 25, 2023
Auxiliary request during Opposition procedure
Sep 25, 2023
Auxiliary request during Opposition procedure
Sep 25, 2023
Auxiliary request during Opposition procedure
Sep 25, 2023
Auxiliary request during Opposition procedure
Sep 25, 2023
Auxiliary request during Opposition procedure
Sep 25, 2023
Auxiliary request during Opposition procedure
Sep 25, 2023
Auxiliary request during Opposition procedure
Sep 25, 2023
Auxiliary request during Opposition procedure
Sep 25, 2023
Auxiliary request during Opposition procedure
Sep 25, 2023
Auxiliary request during Opposition procedure
Sep 25, 2023
Auxiliary request during Opposition procedure - 01
Sep 25, 2023
Auxiliary request during Opposition procedure - 02
Sep 25, 2023
Auxiliary request during Opposition procedure - 03
Sep 25, 2023
Auxiliary request during Opposition procedure - 04
Sep 25, 2023
Auxiliary request during Opposition procedure - 05
Sep 25, 2023
Auxiliary request during Opposition procedure - 06
Sep 25, 2023
Auxiliary request during Opposition procedure - 07
Sep 25, 2023
Auxiliary request during Opposition procedure - 08
Sep 25, 2023
Auxiliary request during Opposition procedure - 09
Sep 25, 2023
Auxiliary request during Opposition procedure - 10
Sep 25, 2023
Auxiliary request during Opposition procedure - 11
Sep 25, 2023
Auxiliary request during Opposition procedure - 12
Sep 25, 2023
Auxiliary request during Opposition procedure - 13
Sep 25, 2023
Auxiliary request during Opposition procedure - 14
Sep 25, 2023
Letter accompanying subsequently filed items
Sep 25, 2023
Reply of the patent proprietor to the notice(s) of opposition
May 16, 2023
Communication of a notice of opposition and request to file observations
May 16, 2023
Notice of further oppositions to opponent(s)
May 4, 2023
Communication of a notice of opposition - first information to patent proprietor
Apr 27, 2023
(Electronic) Receipt
Apr 27, 2023
Citation in opposition procedure - 001
Apr 27, 2023
Citation in opposition procedure - 001
Apr 27, 2023
Citation in opposition procedure - 002
Apr 27, 2023
Citation in opposition procedure - 003
Apr 27, 2023
Citation in opposition procedure - 004
Apr 27, 2023
Citation in opposition procedure - 005
Apr 27, 2023
Citation in opposition procedure - 006
Apr 27, 2023
Citation in opposition procedure - 007
Apr 27, 2023
Citation in opposition procedure - 008
Apr 27, 2023
Citation in opposition procedure - 009
Apr 27, 2023
Citation in opposition procedure - 010
Apr 27, 2023
Consolidated list of cited opposition documents
Apr 27, 2023
Notice of opposition
Apr 27, 2023
Notice of opposition
Nov 7, 2022
Communication of the registration of a transfer or change of name and/or address
Nov 1, 2022
General authorisation
Nov 1, 2022
Letter accompanying subsequently filed items
Nov 1, 2022
Submission concerning change of applicant's address
Aug 9, 2022
Transmission of the certificate for a European patent pursuant to Rule 74 EPC
Jun 30, 2022
Decision to grant a European patent
May 25, 2022
Communication regarding the forthcoming grant
May 19, 2022
(Electronic) Receipt
May 19, 2022
Filing of the translations of the claims
May 19, 2022
French translation of claims
May 19, 2022
German translation of the claims
May 19, 2022
Letter accompanying subsequently filed items
Jan 27, 2022
Bibliographic data of the European patent application
Jan 27, 2022
Communication about intention to grant a European patent
Jan 27, 2022
Intention to grant (signatures)
Jan 27, 2022
Text intended for grant (clean copy)
Jan 27, 2022
Text intended for grant (version for approval)
Aug 31, 2021
(Electronic) Receipt
Aug 31, 2021
Amended claims with annotations
Aug 31, 2021
Claims
Aug 31, 2021
Letter accompanying subsequently filed items
Aug 31, 2021
Reply to communication from the Examining Division
Jul 2, 2021
Confirmation of revocation of automatic debit order
Jul 2, 2021
Letter relating to the automatic debiting procedure
Jun 29, 2021
Letter relating to the automatic debiting procedure
May 17, 2021
Annex to the communication
May 17, 2021
Communication from the Examining Division
Mar 15, 2021
(Electronic) Receipt
Mar 15, 2021
Amended claims with annotations
Mar 15, 2021
Claims
Mar 15, 2021
Letter accompanying subsequently filed items
Mar 15, 2021
Reply to communication from the Examining Division
Nov 3, 2020
Annex to the communication
Nov 3, 2020
Communication from the Examining Division
Aug 27, 2020
(Electronic) Receipt
Aug 27, 2020
Amended claims with annotations
Aug 27, 2020
Claims
Aug 27, 2020
Letter accompanying subsequently filed items
Aug 27, 2020
Reply to communication from the Examining Division
Jul 2, 2020
Confirmation of revocation of automatic debit order
Jul 1, 2020
Letter relating to the automatic debiting procedure
Jun 29, 2020
Letter relating to the automatic debiting procedure
Apr 30, 2020
Annex to the communication
Apr 30, 2020
Communication from the Examining Division
Apr 24, 2020
Examination started
Aug 15, 2019
(Electronic) Receipt
Aug 15, 2019
Amended claims filed after receipt of (European) search report
Aug 15, 2019
Amended claims with annotations
Aug 15, 2019
Amended description filed after receipt of (European) search report
Aug 15, 2019
Amended description with annotations
Aug 15, 2019
Amendments received before examination
Aug 15, 2019
Letter accompanying subsequently filed items
Jul 3, 2019
Confirmation of revocation of automatic debit order
Jul 2, 2019
Letter relating to the automatic debiting procedure
Jun 28, 2019
Letter relating to the automatic debiting procedure
Mar 27, 2019
Notification on forthcoming publication of bibliographic data
Feb 5, 2019
Communication concerning correction of deficiencies in written opinion/amendment of application/payment of claims fee
Jan 29, 2019
Communication to designated inventor
Jan 29, 2019
Communication to designated inventor
Jan 29, 2019
Communication to designated inventor
Jan 9, 2019
(Electronic) Receipt
Jan 9, 2019
Request for entry into the European phase
Jan 3, 2019
Copy of the international preliminary report on patentability
Oct 26, 2018
Information on entry into European phase
Jan 8, 2018
Priority document (electronically transmitted)
Dec 21, 2017
Copy of the international search report
Dec 21, 2017
Published international application - A1
Sep 15, 2017
Written opinion of the ISA, boxes No. I to VIII
Sep 15, 2017
Written opinion of the ISA, cover sheet
Sep 15, 2017
Written opinion of the ISA, supplemental box

EP3471856

DONALDSON

Application Number: EP17732723A
Filing Date: Jun 16, 2017
Status: Revoked; Aug 1, 2025
Publication Date: Jul 27, 2022
External Links: Slate, Register , Google Patents

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Air Cleaner Assemblies And Cartridge

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Dossier Documents

EP3471856