A Method Of Controlling A Wastewater Treatment Plant

Patent No. EP3645469 (titled "A Method Of Controlling A Wastewater Treatment Plant") was filed by Danmarks Tekniske Universitet on Jun 29, 2018. The application was issued on Dec 20, 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
SUEZ	Sep 19, 2024	LAVOIX

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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Dec 10, 2025
Annex to the communication - opposition
Dec 10, 2025
Brief communication - Opposition proceedings
Dec 10, 2025
Brief communication - Opposition proceedings
Dec 10, 2025
Decision revoking the European patent
Dec 10, 2025
Decision revoking the European patent
Dec 10, 2025
Grounds for the decision (Annex) - opposition
Dec 10, 2025
Means of redress
Dec 10, 2025
Minutes of the oral proceedings (Opposition Division) - conclusion of the proceedings
Dec 10, 2025
Minutes of the oral proceedings (Opposition Division) - introduction of the parties
Dec 10, 2025
Provision of a copy of the minutes - opposition procedure
Dec 10, 2025
Provision of a copy of the minutes - opposition procedure
Dec 8, 2025
Decision of the Opposition Division and instruction
Nov 25, 2025
Information about the result of oral proceedings
Nov 7, 2025
Brief communication - Opposition proceedings
Nov 4, 2025
(Electronic) Receipt
Nov 4, 2025
Letter accompanying subsequently filed items
Nov 4, 2025
Written submission in preparation to/during oral proceedings
Oct 31, 2025
Brief communication - Opposition proceedings
Oct 27, 2025
(Electronic) Receipt
Oct 27, 2025
Citation in opposition procedure - 015
Oct 27, 2025
Consolidated list of cited opposition documents
Oct 27, 2025
Letter accompanying subsequently filed items
Oct 27, 2025
Written submission in preparation to/during oral proceedings
Sep 30, 2025
Brief communication - Opposition proceedings
Sep 25, 2025
(Electronic) Receipt
Sep 25, 2025
Auxiliary request during Opposition procedure
Sep 25, 2025
Auxiliary request during Opposition procedure
Sep 25, 2025
Auxiliary request during Opposition procedure
Sep 25, 2025
Auxiliary request during Opposition procedure
Sep 25, 2025
Auxiliary request during Opposition procedure
Sep 25, 2025
Auxiliary request during Opposition procedure
Sep 25, 2025
Auxiliary request during Opposition procedure
Sep 25, 2025
Auxiliary request during Opposition procedure
Sep 25, 2025
Auxiliary request during Opposition procedure
Sep 25, 2025
Auxiliary request during Opposition procedure
Sep 25, 2025
Auxiliary request during Opposition procedure
Sep 25, 2025
Auxiliary request during Opposition procedure - 01
Sep 25, 2025
Auxiliary request during Opposition procedure - 02
Sep 25, 2025
Auxiliary request during Opposition procedure - 03
Sep 25, 2025
Auxiliary request during Opposition procedure - 04
Sep 25, 2025
Auxiliary request during Opposition procedure - 05
Sep 25, 2025
Auxiliary request during Opposition procedure - 06
Sep 25, 2025
Auxiliary request during Opposition procedure - 07
Sep 25, 2025
Auxiliary request during Opposition procedure - 08
Sep 25, 2025
Auxiliary request during Opposition procedure - 09
Sep 25, 2025
Auxiliary request during Opposition procedure - 10
Sep 25, 2025
Auxiliary request during Opposition procedure - 11
Sep 25, 2025
Brief communication - Opposition proceedings
Sep 25, 2025
Letter accompanying subsequently filed items
Sep 25, 2025
Written submission in preparation to/during oral proceedings
Sep 23, 2025
(Electronic) Receipt
Sep 23, 2025
Letter accompanying subsequently filed items
Sep 23, 2025
Written submission in preparation to/during oral proceedings
Apr 10, 2025
Annex to the communication - opposition
Apr 10, 2025
Information concerning oral proceedings
Apr 10, 2025
Scanned annex to a communication - opposition procedure
Apr 10, 2025
Summons to attend oral proceedings
Apr 10, 2025
Summons to attend oral proceedings
Mar 17, 2025
Brief communication - Opposition proceedings
Mar 13, 2025
Communication of amended entries
Mar 6, 2025
(Electronic) Receipt
Mar 6, 2025
Any annexes (other than citation) to an opposition letter
Mar 6, 2025
Letter accompanying subsequently filed items
Mar 6, 2025
Request for a change of address - opponent
Feb 14, 2025
Brief communication - Opposition proceedings
Feb 7, 2025
(Electronic) Receipt
Feb 7, 2025
Auxiliary request during Opposition procedure - 01
Feb 7, 2025
Auxiliary request during Opposition procedure - 02
Feb 7, 2025
Auxiliary request during Opposition procedure - 03
Feb 7, 2025
Auxiliary request during Opposition procedure - 04
Feb 7, 2025
Auxiliary request during Opposition procedure - 05
Feb 7, 2025
Auxiliary request during Opposition procedure - 06
Feb 7, 2025
Auxiliary request during Opposition procedure - 07
Feb 7, 2025
Auxiliary request during Opposition procedure - 08
Feb 7, 2025
Letter accompanying subsequently filed items
Feb 7, 2025
Reply of the patent proprietor to the notice(s) of opposition
Oct 7, 2024
Communication of a notice of opposition and request to file observations
Oct 7, 2024
Notice of further oppositions to opponent(s)
Sep 24, 2024
Communication of a notice of opposition - first information to patent proprietor
Sep 18, 2024
(Electronic) Receipt
Sep 18, 2024
Citation in opposition procedure - 001
Sep 18, 2024
Citation in opposition procedure - 002
Sep 18, 2024
Citation in opposition procedure - 003
Sep 18, 2024
Citation in opposition procedure - 004
Sep 18, 2024
Citation in opposition procedure - 005
Sep 18, 2024
Citation in opposition procedure - 006
Sep 18, 2024
Citation in opposition procedure - 007
Sep 18, 2024
Citation in opposition procedure - 008
Sep 18, 2024
Citation in opposition procedure - 009
Sep 18, 2024
Citation in opposition procedure - 010
Sep 18, 2024
Citation in opposition procedure - 011
Sep 18, 2024
Citation in opposition procedure - 012
Sep 18, 2024
Citation in opposition procedure - 013
Sep 18, 2024
Citation in opposition procedure - 014
Sep 18, 2024
Notice of opposition
Sep 18, 2024
Notice of opposition
Jan 9, 2024
Transmission of the certificate for a European patent pursuant to Rule 74 EPC
Nov 23, 2023
Decision to grant a European patent
Nov 14, 2023
(Electronic) Receipt
Nov 14, 2023
Filing of the translations of the claims
Nov 14, 2023
French translation of claims
Nov 14, 2023
German translation of the claims
Sep 7, 2023
Communication of the registration of a transfer or change of name and/or address
Sep 1, 2023
(Electronic) Receipt
Sep 1, 2023
Annexes in respect of a client data request
Sep 1, 2023
Letter accompanying subsequently filed items
Sep 1, 2023
Submission concerning a transfer of rights (applicant)
Jul 19, 2023
Annex to the communication about intention to grant a European patent
Jul 19, 2023
Bibliographic data of the European patent application
Jul 19, 2023
Communication about intention to grant a European patent
Jul 19, 2023
Intention to grant (signatures)
Jul 19, 2023
Text intended for grant (clean copy)
Jul 19, 2023
Text intended for grant (version for approval)
Jul 4, 2023
Indication of deficiencies in a request for registering a transfer of rights and invitation to correct them
Jun 15, 2023
(Electronic) Receipt
Jun 15, 2023
Annexes in respect of a client data request
Jun 15, 2023
Letter accompanying subsequently filed items
Jun 15, 2023
Submission concerning a transfer of rights (applicant)
Apr 5, 2023
Indication of deficiencies in a request for registering a transfer of rights and invitation to correct them
Mar 24, 2023
(Electronic) Receipt
Mar 24, 2023
Amended description with annotations
Mar 24, 2023
Claims
Mar 24, 2023
Description
Mar 24, 2023
Letter accompanying subsequently filed items
Mar 24, 2023
Request for correction/amendment of the text proposed for grant sent from 01.04.2012
Mar 15, 2023
(Electronic) Receipt
Mar 15, 2023
Annexes in respect of a client data request
Mar 15, 2023
Letter accompanying subsequently filed items
Mar 15, 2023
Submission concerning a transfer of rights (applicant)
Nov 15, 2022
Annex to the communication about intention to grant a European patent
Nov 15, 2022
Bibliographic data of the European patent application
Nov 15, 2022
Communication about intention to grant a European patent
Nov 15, 2022
Intention to grant (signatures)
Nov 15, 2022
Text intended for grant (clean copy)
Nov 15, 2022
Text intended for grant (version for approval)
Mar 28, 2022
Document concerning representation
Mar 4, 2022
Communication of the registration of a transfer or change of name and/or address
Feb 24, 2022
Submission concerning change of applicant's name
Oct 25, 2021
(Electronic) Receipt
Oct 25, 2021
Amended claims with annotations
Oct 25, 2021
Claims
Oct 25, 2021
Letter accompanying subsequently filed items
Oct 25, 2021
Reply to communication from the Examining Division
Jul 8, 2021
Letter relating to the automatic debiting procedure
Jun 18, 2021
Grant of extension of time limit (examination procedure)
Jun 15, 2021
(Electronic) Receipt
Jun 15, 2021
Letter accompanying subsequently filed items
Jun 15, 2021
Request for extension of time limit to communication from the Examining Division
Jun 10, 2021
Confirmation of revocation of automatic debit order
Jun 7, 2021
Letter relating to the automatic debiting procedure
Apr 14, 2021
Annex to the communication
Apr 14, 2021
Communication from the Examining Division
Apr 7, 2021
Examination started
Aug 17, 2020
(Electronic) Receipt
Aug 17, 2020
Amended claims filed after receipt of (European) search report
Aug 17, 2020
Amended claims with annotations
Aug 17, 2020
Amendments received before examination
Aug 17, 2020
Letter accompanying subsequently filed items
Apr 24, 2020
Invitation to indicate correct address of inventor
Apr 17, 2020
Letter which had not been notified
Apr 8, 2020
Notification on forthcoming publication of bibliographic data
Feb 7, 2020
Communication concerning correction of deficiencies in written opinion/amendment of application/payment of claims fee
Feb 5, 2020
Communication to designated inventor
Feb 5, 2020
Communication to designated inventor
Feb 5, 2020
Communication to designated inventor
Feb 5, 2020
Communication to designated inventor
Feb 1, 2020
Priority search results copy provided by EPO
Jan 21, 2020
(Electronic) Receipt
Jan 21, 2020
Request for entry into the European phase
Jan 10, 2020
Copy of the international preliminary examination report
Nov 19, 2019
Notification of the recording of a change
Nov 19, 2019
Notification of the recording of a change
Nov 19, 2019
Notification of the recording of a change
Nov 8, 2019
Information on entry into European phase
Sep 5, 2019
Annex to International preliminary examination report
Sep 5, 2019
International preliminary examination report
Sep 5, 2019
International preliminary examination report - free text sheet
Sep 5, 2019
International preliminary examination report - points I-VIII
Sep 5, 2019
Transmittal of International Preliminary Examination Report
Aug 30, 2019
Despatch of copy of consultation
Aug 30, 2019
Result of consultation
Aug 30, 2019
Separate sheet with IPEA428
Jul 5, 2019
(Electronic) Receipt
Jul 5, 2019
Letter regarding PCTII procedure
Jul 5, 2019
PCT(IPEA): Amended sheet - claims
Jul 5, 2019
PCT(IPEA): Amended sheet - claims
Jul 5, 2019
Reply to communication PCT/IPEA/408
Jun 4, 2019
Notification of election of EPO
May 27, 2019
Written opinion
May 27, 2019
Written opinion - free text sheet
May 27, 2019
Written opinion - points I-VIII
May 21, 2019
Notification of defects in the demand
May 10, 2019
Notification of receipt of demand
Apr 29, 2019
(Electronic) Receipt
Apr 29, 2019
Letter regarding PCTII procedure
Apr 29, 2019
Letter regarding PCTII procedure
Apr 29, 2019
PCT demand form
Apr 29, 2019
Reply to International Search Opinion
Feb 5, 2019
Priority document (electronically transmitted)
Jan 3, 2019
Copy of the international search report
Jan 3, 2019
Published international application - A1
Jul 20, 2018
Written opinion of the ISA, boxes No. I to VIII
Jul 20, 2018
Written opinion of the ISA, cover sheet
Jul 20, 2018
Written opinion of the ISA, supplemental box
Jul 5, 2018
Notification of the international application number and of the international filing date
Jul 2, 2018
Electronic request for grant of an International application
Jul 2, 2018
Priority document (RO-procedure)
Jun 29, 2018
(Electronic) Receipt
Jun 29, 2018
Abstract
Jun 29, 2018
Claims
Jun 29, 2018
Description
Jun 29, 2018
Document concerning fees and payments
Jun 29, 2018
Drawings

EP3645469

DANMARKS TEKNISKE UNIVERSITET

Application Number: EP18732831A
Filing Date: Jun 29, 2018
Status: Granted And Under Opposition; Nov 17, 2023
Publication Date: Dec 20, 2023
External Links: Slate, Register , Google Patents

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A Method Of Controlling A Wastewater Treatment Plant

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Dossier Documents

EP3645469