Particle Entrained Air-Permeable Structures

Patent No. EP3236909 (titled "Particle Entrained Air-Permeable Structures") was filed by Optimum Technology Intellectual on Sep 23, 2015. The application was issued on Dec 11, 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
TWE MEULEBEKE	Sep 9, 2025	KIRKPATRICK

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

Jan 29, 2026
Brief communication - Opposition proceedings
Jan 23, 2026
(Electronic) Receipt
Jan 23, 2026
Auxiliary request during Opposition procedure
Jan 23, 2026
Auxiliary request during Opposition procedure
Jan 23, 2026
Auxiliary request during Opposition procedure
Jan 23, 2026
Auxiliary request during Opposition procedure
Jan 23, 2026
Auxiliary request during Opposition procedure
Jan 23, 2026
Auxiliary request during Opposition procedure - 01
Jan 23, 2026
Auxiliary request during Opposition procedure - 02
Jan 23, 2026
Auxiliary request during Opposition procedure - 03
Jan 23, 2026
Auxiliary request during Opposition procedure - 04
Jan 23, 2026
Auxiliary request during Opposition procedure - 05
Jan 23, 2026
Citation in opposition procedure - 012
Jan 23, 2026
Citation in opposition procedure - 013
Jan 23, 2026
Consolidated list of cited opposition documents
Jan 23, 2026
Letter accompanying subsequently filed items
Jan 23, 2026
Main request during Opposition procedure
Jan 23, 2026
Reply of the patent proprietor to the notice(s) of opposition
Sep 25, 2025
Communication of a notice of opposition and request to file observations
Sep 25, 2025
Notice of further oppositions to opponent(s)
Sep 12, 2025
Communication of a notice of opposition - first information to patent proprietor
Sep 9, 2025
(Electronic) Receipt
Sep 9, 2025
Citation in opposition procedure - 001
Sep 9, 2025
Citation in opposition procedure - 002
Sep 9, 2025
Citation in opposition procedure - 003
Sep 9, 2025
Citation in opposition procedure - 004
Sep 9, 2025
Citation in opposition procedure - 005
Sep 9, 2025
Citation in opposition procedure - 006
Sep 9, 2025
Citation in opposition procedure - 007
Sep 9, 2025
Citation in opposition procedure - 008
Sep 9, 2025
Citation in opposition procedure - 009
Sep 9, 2025
Citation in opposition procedure - 010
Sep 9, 2025
Citation in opposition procedure - 011
Sep 9, 2025
Notice of opposition
Sep 9, 2025
Notice of opposition
Jan 2, 2025
Transmission of the certificate for a European patent pursuant to Rule 74 EPC
Nov 14, 2024
Decision to grant a European patent
Nov 8, 2024
Decision to allow further processing
Oct 30, 2024
(Electronic) Receipt
Oct 30, 2024
French translation of claims
Oct 30, 2024
German translation of the claims
Oct 30, 2024
Letter accompanying subsequently filed items
Oct 30, 2024
Request for further processing
Sep 4, 2024
Application deemed to be withdrawn ( translations of claims/payment missing)
Apr 8, 2024
Annex to the communication about intention to grant a European patent
Apr 8, 2024
Bibliographic data of the European patent application
Apr 8, 2024
Communication about intention to grant a European patent
Apr 8, 2024
Intention to grant (signatures)
Apr 8, 2024
Text intended for grant (clean copy)
Apr 8, 2024
Text intended for grant (version for approval)
Mar 20, 2024
Notification concerning the date of oral proceedings
Mar 13, 2024
(Electronic) Receipt
Mar 13, 2024
Claims
Mar 13, 2024
Description
Mar 13, 2024
Drawings
Mar 13, 2024
Letter accompanying subsequently filed items
Mar 13, 2024
Written submission in preparation to/during oral proceedings
Jan 24, 2024
Acknowledgement of a document
Jan 24, 2024
Annex to the communication
Jan 24, 2024
Summons to attend oral proceedings
Jan 10, 2024
Decision to allow further processing
Jan 2, 2024
(Electronic) Receipt
Jan 2, 2024
Claims
Jan 2, 2024
Description
Jan 2, 2024
Drawings
Jan 2, 2024
Letter accompanying subsequently filed items
Jan 2, 2024
Request for correction/amendment of the text proposed for grant sent from 01.04.2012
Nov 3, 2023
Application deemed to be withdrawn ( translations of claims/payment missing)
Jun 2, 2023
Annex to the communication about intention to grant a European patent
Jun 2, 2023
Bibliographic data of the European patent application
Jun 2, 2023
Communication about intention to grant a European patent
Jun 2, 2023
Intention to grant (signatures)
Jun 2, 2023
Text intended for grant (clean copy)
Jun 2, 2023
Text intended for grant (version for approval)
May 17, 2023
Decision to allow further processing
Apr 5, 2023
(Electronic) Receipt
Apr 5, 2023
Claims
Apr 5, 2023
Description
Apr 5, 2023
Drawings
Apr 5, 2023
Letter accompanying subsequently filed items
Apr 5, 2023
Request for correction/amendment of the text proposed for grant sent from 01.04.2012
Jan 27, 2023
Application deemed to be withdrawn ( translations of claims/payment missing)
Aug 26, 2022
Bibliographic data of the European patent application
Aug 26, 2022
Communication about intention to grant a European patent
Aug 26, 2022
Intention to grant (signatures)
Aug 26, 2022
Text intended for grant (clean copy)
Aug 26, 2022
Text intended for grant (version for approval)
Aug 1, 2022
Decision to allow further processing
Jul 21, 2022
(Electronic) Receipt
Jul 21, 2022
Description
Jul 21, 2022
Letter accompanying subsequently filed items
Jul 21, 2022
Request for correction/amendment of the text proposed for grant sent from 01.04.2012
May 12, 2022
Application deemed to be withdrawn ( translations of claims/payment missing)
Dec 6, 2021
Bibliographic data of the European patent application
Dec 6, 2021
Communication about intention to grant a European patent
Dec 6, 2021
Intention to grant (signatures)
Dec 6, 2021
Text intended for grant (clean copy)
Dec 6, 2021
Text intended for grant (version for approval)
Oct 21, 2021
Decision to allow further processing
Oct 5, 2021
(Electronic) Receipt
Oct 5, 2021
Claims
Oct 5, 2021
Description
Oct 5, 2021
Drawings
Oct 5, 2021
Letter accompanying subsequently filed items
Oct 5, 2021
Request for further processing
Jul 27, 2021
Application deemed to be withdrawn ( translations of claims/payment missing)
Feb 22, 2021
Bibliographic data of the European patent application
Feb 22, 2021
Communication about intention to grant a European patent
Feb 22, 2021
Intention to grant (signatures)
Feb 22, 2021
Text intended for grant (clean copy)
Feb 22, 2021
Text intended for grant (version for approval)
Jan 21, 2021
Decision to allow further processing
Jan 8, 2021
(Electronic) Receipt
Jan 8, 2021
Description
Jan 8, 2021
Letter accompanying subsequently filed items
Jan 8, 2021
Request for further processing
Oct 21, 2020
Communication of the registration of a transfer or change of name and/or address
Oct 19, 2020
Application deemed to be withdrawn ( translations of claims/payment missing)
Sep 21, 2020
(Electronic) Receipt
Sep 21, 2020
Annexes in respect of a client data request
Sep 21, 2020
Letter accompanying subsequently filed items
Sep 21, 2020
Submission concerning a transfer of rights (applicant)
Aug 31, 2020
Indication of deficiencies in a request for registering a transfer of rights and invitation to correct them
Aug 3, 2020
(Electronic) Receipt
Aug 3, 2020
Annexes in respect of a client data request
Aug 3, 2020
Letter accompanying subsequently filed items
Aug 3, 2020
Submission concerning a transfer of rights (applicant)
May 15, 2020
Bibliographic data of the European patent application
May 15, 2020
Communication about intention to grant a European patent
May 15, 2020
Intention to grant (signatures)
May 15, 2020
Text intended for grant (clean copy)
May 15, 2020
Text intended for grant (version for approval)
Mar 19, 2020
Document concerning representation
Nov 6, 2019
(Electronic) Receipt
Nov 6, 2019
Amended description with annotations
Nov 6, 2019
Description
Nov 6, 2019
Letter accompanying subsequently filed items
Nov 6, 2019
Reply to communication from the Examining Division
Oct 14, 2019
Annex to the communication
Oct 14, 2019
Consultation by telephone/in person (with time limit)
Oct 14, 2019
Result of consultation by telephone/in person
Sep 30, 2019
Transmittal of third party observations to applicant
Sep 13, 2019
Observations by third parties
Sep 13, 2019
Patent document filed by a Third party
Sep 13, 2019
Patent document filed by a Third party
Jul 1, 2019
(Electronic) Receipt
Jul 1, 2019
Amended claims with annotations
Jul 1, 2019
Claims
Jul 1, 2019
Description
Jul 1, 2019
Letter accompanying subsequently filed items
Jul 1, 2019
Reply to communication from the Examining Division
Feb 22, 2019
Annex to the communication
Feb 22, 2019
Consultation by telephone/in person (with time limit)
Feb 22, 2019
Result of consultation by telephone/in person
Feb 11, 2019
Examination started
Dec 20, 2018
Communication of amended entries concerning the representative
Dec 14, 2018
Submission concerning change of applicant's representative
Dec 13, 2018
Submission concerning change of applicant's representative
Mar 23, 2018
(Electronic) Receipt
Mar 23, 2018
Letter accompanying subsequently filed items
Mar 23, 2018
Reply to Written Opinion prepared by the EPO
Oct 5, 2017
Notification on forthcoming publication of bibliographic data
Sep 27, 2017
Refund of fees
Sep 18, 2017
(Electronic) Receipt
Sep 18, 2017
(Electronic) Receipt
Sep 18, 2017
Annexes in respect of a client data request
Sep 18, 2017
Letter accompanying subsequently filed items
Sep 18, 2017
Letter accompanying subsequently filed items
Sep 18, 2017
Letter concerning fees and payments
Sep 18, 2017
Notification of the recording of a change
Sep 18, 2017
Submission concerning a transfer of rights (applicant)
Sep 14, 2017
Communication regarding comments on written opinion/amendment of application/payment of claims fee
Sep 1, 2017
Notice on debiting of fees
Aug 2, 2017
Communication to designated inventor
Jul 18, 2017
Copy of the international preliminary report on patentability
Jun 26, 2017
Notification of the recording of a change
Jun 26, 2017
Notification of the recording of a change
Jun 19, 2017
(Electronic) Receipt
Jun 19, 2017
Annex
Jun 13, 2017
(Electronic) Receipt
Jun 13, 2017
Amended claims filed after receipt of (European) search report
Jun 13, 2017
Amended claims with annotations
Jun 13, 2017
Amendments received before examination
Jun 13, 2017
Request for entry into the European phase
Jun 13, 2017
Submission concerning representation
May 12, 2017
Information on entry into European phase
Jan 16, 2017
Notification of the recording of a change
Jan 16, 2017
Notification of the recording of a change
Dec 2, 2016
(Electronic) Receipt
Dec 2, 2016
Incoming letter related to ISA procedure
Dec 2, 2016
Incoming letter related to ISA procedure
Dec 2, 2016
Submission concerning representation
Jul 26, 2016
Priority document (electronically transmitted)
Jul 7, 2016
Copy of the international search report
Jul 7, 2016
Published international application - A1
Dec 15, 2015
ISR: cited documents
Dec 14, 2015
Written opinion of the ISA, boxes No. I to VIII
Dec 14, 2015
Written opinion of the ISA, cover sheet
Dec 14, 2015
Written opinion of the ISA, supplemental box
Nov 12, 2015
Notification of receipt of Search copy
Oct 16, 2015
Abstract
Oct 16, 2015
Claims
Oct 16, 2015
Description
Oct 16, 2015
Drawings
Oct 16, 2015
Fee calculation sheet for an international application
Oct 16, 2015
Notification Concerning Documents Transmitted (copy for ISA/EP)
Oct 16, 2015
Notification Concerning Payment of Prescribed Fees (copy for ISA/EP)
Oct 16, 2015
Notification of the International Application Number and of the International Filing Date (copy for ISA/EP)
Oct 16, 2015
Request form for international application (copy for ISA/EP)

EP3236909

OPTIMUM TECHNOLOGY INTELLECTUAL

Application Number: EP15787270A
Filing Date: Sep 23, 2015
Status: Granted And Under Opposition; Nov 8, 2024
Publication Date: Dec 11, 2024
External Links: Slate, Register , Google Patents

IP Verse

Particle Entrained Air-Permeable Structures

Patent Summary

Patent Family

Patent Oppositions

Dossier Documents

EP3236909