Air Filter Unit

Patent No. EP3396269 (titled "Air Filter Unit") was filed by Blueair on Apr 10, 2018. The application was issued on Apr 19, 2023.

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
ALTHOFF	Oct 28, 2020	SCHNEIDERS & BEHRENDT BOCHUM

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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Mar 23, 2023
Decision to maintain the European patent in amended form
Mar 23, 2023
Decision to maintain the European patent in amended form
Mar 17, 2023
Termination of the opposition proceedings with maintenance of patent
Mar 8, 2023
(Electronic) Receipt
Mar 8, 2023
Filing of the translation of the amended claims
Mar 8, 2023
French translation of claims
Mar 8, 2023
German translation of the claims
Feb 8, 2023
Brief communication - Opposition proceedings
Feb 8, 2023
Communication confirming withdrawal from representation
Feb 8, 2023
Communication of amended entries concerning the representative
Feb 2, 2023
(Electronic) Receipt
Feb 2, 2023
Letter accompanying subsequently filed items
Feb 2, 2023
Submission concerning change of proprietor's representative
Jan 12, 2023
Communication of bibliographic data
Jan 12, 2023
Communication to opponent concerning maintenance
Jan 12, 2023
Communication with request to file translations
Oct 17, 2022
Maintenance of the patent with the documents specified in the final decision
Jul 29, 2022
Brief communication - Opposition proceedings
Jul 29, 2022
Communication of amended entries
Jul 25, 2022
(Electronic) Receipt
Jul 25, 2022
Letter accompanying subsequently filed items
Jul 25, 2022
Request concerning representative opponent
Jul 11, 2022
Advice of delivery
Jul 5, 2022
(Electronic) Receipt
Jul 5, 2022
Advice of delivery
Jul 5, 2022
Annex to the communication - opposition
Jul 5, 2022
Decision of the Opposition Division and instruction
Jul 5, 2022
Druckexemplar in opposition procedure
Jul 5, 2022
Grounds for the decision (Annex) - opposition
Jul 5, 2022
Interlocutory decision in opposition proceedings
Jul 5, 2022
Interlocutory decision in opposition proceedings
Jul 5, 2022
Letter accompanying subsequently filed items
Jul 5, 2022
Means of redress
Jul 5, 2022
Minutes of the oral proceedings (Opposition Division) - conclusion of the proceedings
Jul 5, 2022
Minutes of the oral proceedings (Opposition Division) - conclusion of the proceedings
Jul 5, 2022
Minutes of the oral proceedings (Opposition Division) - introduction of the parties
Jul 5, 2022
Provision of a copy of the minutes - opposition procedure
Jul 5, 2022
Provision of a copy of the minutes - opposition procedure
Jul 5, 2022
Scanned annex to a communication - opposition procedure
Jul 5, 2022
Scanned annex to a communication - opposition procedure
Jul 5, 2022
Transmittal of decision / summons - opposition
Jul 5, 2022
Transmittal of decision / summons - opposition
May 20, 2022
Brief communication - Opposition proceedings
May 19, 2022
Information about the result of oral proceedings
May 17, 2022
(Electronic) Receipt
May 17, 2022
Letter accompanying subsequently filed items
May 17, 2022
Notification concerning the date of oral proceedings
May 17, 2022
Written submission in preparation to/during oral proceedings
May 16, 2022
Brief communication - Opposition proceedings
May 12, 2022
Brief communication - Opposition proceedings
May 10, 2022
(Electronic) Receipt
May 10, 2022
Letter accompanying subsequently filed items
May 10, 2022
Written submission in preparation to/during oral proceedings
May 9, 2022
(Electronic) Receipt
May 9, 2022
Citation in opposition procedure - 003
May 9, 2022
Citation in opposition procedure - 003
May 9, 2022
Citation in opposition procedure - 004
May 9, 2022
Citation in opposition procedure - 004
May 9, 2022
Citation in opposition procedure - 005
May 9, 2022
Citation in opposition procedure - 006
May 9, 2022
Citation in opposition procedure - 007
May 9, 2022
Citation in opposition procedure - 008
May 9, 2022
Citation in opposition procedure - 009
May 9, 2022
Citation in opposition procedure - 010
May 9, 2022
Consolidated list of cited opposition documents
May 9, 2022
Letter accompanying subsequently filed items
May 9, 2022
Notice of opposition
Mar 25, 2022
(Electronic) Receipt
Mar 25, 2022
Letter accompanying subsequently filed items
Mar 24, 2022
Brief communication - Opposition proceedings
Mar 23, 2022
Brief communication - Opposition proceedings
Mar 23, 2022
Brief communication - Opposition proceedings
Mar 23, 2022
Communication concerning the filing of a power of attorney
Mar 23, 2022
Communication of amended entries concerning the representative
Mar 22, 2022
Brief communication - Opposition proceedings
Mar 18, 2022
(Electronic) Receipt
Mar 18, 2022
(Electronic) Receipt
Mar 18, 2022
Auxiliary request during Opposition procedure
Mar 18, 2022
Auxiliary request during Opposition procedure
Mar 18, 2022
Auxiliary request during Opposition procedure
Mar 18, 2022
Auxiliary request during Opposition procedure
Mar 18, 2022
Auxiliary request during Opposition procedure - 01
Mar 18, 2022
Auxiliary request during Opposition procedure - 02
Mar 18, 2022
Auxiliary request during Opposition procedure - 03
Mar 18, 2022
Auxiliary request during Opposition procedure - 04
Mar 18, 2022
Citation in opposition procedure - 001
Mar 18, 2022
Letter accompanying subsequently filed items
Mar 18, 2022
Letter accompanying subsequently filed items
Mar 18, 2022
Main request during Opposition procedure
Mar 18, 2022
Main request during Opposition procedure
Mar 18, 2022
Written submission in preparation to/during oral proceedings
Mar 18, 2022
Written submission in preparation to/during oral proceedings
Mar 17, 2022
(Electronic) Receipt
Mar 17, 2022
Authorisation
Mar 17, 2022
Brief communication to applicant/representative
Mar 17, 2022
Letter accompanying subsequently filed items
Mar 17, 2022
Miscellaneous requests concerning client data
Mar 16, 2022
(Electronic) Receipt
Mar 16, 2022
Letter accompanying subsequently filed items
Mar 16, 2022
Request for interpreters during oral proceedings
Mar 10, 2022
(Electronic) Receipt
Mar 10, 2022
Authorisation
Mar 10, 2022
Letter accompanying subsequently filed items
Mar 10, 2022
Request for change of opponent's representative
Aug 11, 2021
Advice of delivery
Aug 6, 2021
(Electronic) Receipt
Aug 6, 2021
Advice of delivery
Aug 6, 2021
Annex to the communication - opposition
Aug 6, 2021
Information concerning oral proceedings
Aug 6, 2021
Letter accompanying subsequently filed items
Aug 6, 2021
Summons to attend oral proceedings
Aug 6, 2021
Summons to attend oral proceedings
Aug 6, 2021
Transmittal of decision / summons - opposition
Aug 6, 2021
Transmittal of decision / summons - opposition
May 20, 2021
Brief communication - Opposition proceedings
May 14, 2021
(Electronic) Receipt
May 14, 2021
Auxiliary request during Opposition procedure - 01
May 14, 2021
Auxiliary request during Opposition procedure - 02
May 14, 2021
Auxiliary request during Opposition procedure - 03
May 14, 2021
Letter accompanying subsequently filed items
May 14, 2021
Main request during Opposition procedure
May 14, 2021
Reply of the patent proprietor to the notice(s) of opposition
Jan 27, 2021
Refund of fees
Jan 20, 2021
Communication of a notice of opposition and request to file observations
Jan 20, 2021
Notice of further oppositions to opponent(s)
Jan 18, 2021
Brief communication - Opposition proceedings
Jan 8, 2021
(Electronic) Receipt
Jan 8, 2021
Letter accompanying subsequently filed items
Jan 8, 2021
Letter regarding the opposition procedure (no time limit)
Jan 8, 2021
Translation of the evidence during Opposition procedure
Dec 7, 2020
Communication of amended entries
Nov 30, 2020
Request for change of opponent's representative
Nov 5, 2020
Communication of a notice of opposition - first information to patent proprietor
Nov 5, 2020
Request for documents
Oct 29, 2020
(Electronic) Receipt
Oct 29, 2020
(Electronic) Receipt
Oct 29, 2020
Any annexes (other than citation) to an opposition letter
Oct 29, 2020
Authorisation
Oct 29, 2020
Citation in opposition procedure
Oct 29, 2020
Citation in opposition procedure
Oct 29, 2020
Citation in opposition procedure - 001
Oct 29, 2020
Citation in opposition procedure - 002
Oct 29, 2020
Letter accompanying subsequently filed items
Oct 29, 2020
Letter regarding the opposition procedure (no time limit)
Oct 29, 2020
Notice of opposition
Oct 29, 2020
Notice of opposition
Oct 28, 2020
Consolidated list of cited opposition documents
Oct 28, 2020
Notice of opposition
Oct 28, 2020
Notice of opposition
Oct 28, 2020
Patent document cited during the opposition procedure
Oct 28, 2020
Patent document cited during the opposition procedure
Oct 1, 2020
Document concerning representation
Feb 10, 2020
Transmission of the certificate for a European patent pursuant to Rule 74 EPC
Jan 8, 2020
Decision to grant a European patent
Dec 16, 2019
(Electronic) Receipt
Dec 16, 2019
Filing of the translations of the claims
Dec 16, 2019
French translation of claims
Dec 16, 2019
German translation of the claims
Sep 2, 2019
Bibliographic data of the European patent application
Sep 2, 2019
Communication about intention to grant a European patent
Sep 2, 2019
Intention to grant (signatures)
Sep 2, 2019
Text intended for grant (clean copy)
Sep 2, 2019
Text intended for grant (version for approval)
Jul 22, 2019
Examination started
Apr 4, 2019
(Electronic) Receipt
Apr 4, 2019
Letter concerning fees and payments
Feb 20, 2019
(Electronic) Receipt
Feb 20, 2019
Letter accompanying subsequently filed items
Feb 20, 2019
Letter concerning the inventor
Dec 13, 2018
Communication concerning the filing of a power of attorney
Dec 13, 2018
Communication of amended entries concerning the representative
Dec 6, 2018
(Electronic) Receipt
Dec 6, 2018
Letter accompanying subsequently filed items
Dec 6, 2018
Submission concerning change of applicant's representative
Nov 6, 2018
Reminder period for payment of examination fee/designation fee and correction of deficiencies in Written Opinion/amendment
Oct 4, 2018
Notification of forthcoming publication
Sep 21, 2018
Communication regarding the transmission of the European search report
Sep 21, 2018
European search opinion
Sep 21, 2018
European search report
Sep 21, 2018
Information on Search Strategy
Sep 4, 2018
Search started
Jun 4, 2018
Communication to designated inventor
Jun 4, 2018
Communication to designated inventor
May 17, 2018
Submission concerning representation
Apr 13, 2018
Letter concerning the priority
Apr 13, 2018
Priority document
Apr 13, 2018
Priority document
Apr 10, 2018
Abstract
Apr 10, 2018
Acknowledgement of receipt of electronic submission of the request for grant of a European patent
Apr 10, 2018
Claims
Apr 10, 2018
Description
Apr 10, 2018
Designation of inventor
Apr 10, 2018
Drawings
Apr 10, 2018
Priority search results
Apr 10, 2018
Priority search results
Apr 10, 2018
Request for grant of a European patent

EP3396269

BLUEAIR

Application Number: EP18166439A
Filing Date: Apr 10, 2018
Status: Patent Maintained As Amended; Mar 17, 2023
Publication Date: Apr 19, 2023
External Links: Slate, Register , Google Patents

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Air Filter Unit

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Dossier Documents

EP3396269