Method For Treatment Of Industrial Water Circuits Using Biocides

Patent No. EP3087035 (titled "Method For Treatment Of Industrial Water Circuits Using Biocides") was filed by Kurita Water Industries on Dec 15, 2014. The application was issued on Nov 15, 2017.

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
API ADDITIVES FOR PAPER INDUSTRY	Aug 13, 2018	GRAPE & SCHWARZENSTEINER

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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Nov 4, 2025
Letter relating to the revocation of the automatic debiting procedure
Jan 23, 2023
Refund of fees
Jan 19, 2023
Termination of the opposition proceedings with maintenance of patent
Jan 18, 2023
F3324 Closure of the appeal proceedings: withdrawal of the appeal/ application/ opposition
Jan 18, 2023
F3324 Closure of the appeal proceedings: withdrawal of the appeal/ application/ opposition
Jan 16, 2023
Withdrawal of an appeal
Jan 13, 2023
Withdrawal of an appeal
Nov 24, 2022
F3345 Forwarding of submissions to parties
Nov 24, 2022
Reply to a deficiency communication regarding an appeal
Nov 21, 2022
Advice of delivery
Nov 21, 2022
Composition of the board (T)
Nov 21, 2022
Reply to a deficiency communication regarding an appeal
Nov 17, 2022
F3045 Inadmissibility of the appeal: missing address / missing name
Nov 17, 2022
F3204 Communication of the file number to the parties
Nov 17, 2022
F3204 Communication of the file number to the parties
Nov 17, 2022
F3345 Forwarding of submissions to parties
Nov 16, 2022
Letter relating to Appeal Procedure
Nov 11, 2022
Notice of appeal
Sep 16, 2022
(Electronic) Receipt
Sep 16, 2022
Advice of delivery
Sep 16, 2022
Letter accompanying subsequently filed items
Sep 15, 2022
Advice of delivery
Sep 14, 2022
Annex to the communication - opposition
Sep 14, 2022
Decision of the Opposition Division and instruction
Sep 14, 2022
Decision rejecting the opposition
Sep 14, 2022
Decision rejecting the opposition
Sep 14, 2022
Grounds for the decision (Annex) - opposition
Sep 14, 2022
Means of redress
Sep 14, 2022
Minutes of the oral proceedings (Opposition Division) - conclusion of the proceedings
Sep 14, 2022
Minutes of the oral proceedings (Opposition Division) - conclusion of the proceedings
Sep 14, 2022
Minutes of the oral proceedings (Opposition Division) - introduction of the parties
Sep 14, 2022
Provision of a copy of the minutes - opposition procedure
Sep 14, 2022
Provision of a copy of the minutes - opposition procedure
Sep 14, 2022
Scanned annex to a communication - opposition procedure
Sep 14, 2022
Transmittal of decision / summons - opposition
Sep 14, 2022
Transmittal of decision / summons - opposition
Aug 17, 2022
Brief communication - Opposition proceedings
Aug 10, 2022
(Electronic) Receipt
Aug 10, 2022
General enquiry
Aug 10, 2022
Letter accompanying subsequently filed items
Mar 9, 2022
Information about the result of oral proceedings
Feb 11, 2022
Brief communication - Opposition proceedings
Feb 8, 2022
(Electronic) Receipt
Feb 8, 2022
Letter accompanying subsequently filed items
Feb 8, 2022
Written submission in preparation to/during oral proceedings
Jan 31, 2022
(Electronic) Receipt
Jan 13, 2022
Brief communication - Opposition proceedings
Jan 10, 2022
Brief communication - Opposition proceedings
Jan 10, 2022
Request for interpreters during oral proceedings
Jan 7, 2022
(Electronic) Receipt
Jan 7, 2022
Citation in opposition procedure - 011
Jan 7, 2022
Citation in opposition procedure - 018
Jan 7, 2022
Citation in opposition procedure - 019
Jan 7, 2022
Citation in opposition procedure - 019
Jan 7, 2022
Citation in opposition procedure - 020
Jan 7, 2022
Citation in opposition procedure - 020
Jan 7, 2022
Citation in opposition procedure - 020
Jan 7, 2022
Consolidated list of cited opposition documents
Jan 7, 2022
Letter accompanying subsequently filed items
Jan 7, 2022
Written submission in preparation to/during oral proceedings
Dec 30, 2021
(Electronic) Receipt
Dec 30, 2021
Letter accompanying subsequently filed items
Dec 30, 2021
Written submission in preparation to/during oral proceedings
Dec 20, 2021
Brief communication - Opposition proceedings
Dec 14, 2021
Authorisation
Dec 14, 2021
Authorisation
Dec 14, 2021
Written submission in preparation to/during oral proceedings
Dec 14, 2021
Written submission in preparation to/during oral proceedings
Dec 13, 2021
Notification concerning the date of oral proceedings
Dec 13, 2021
Notification concerning the date of oral proceedings
Aug 27, 2021
Advice of delivery
Aug 20, 2021
Advice of delivery
Aug 18, 2021
Advice of delivery
Aug 18, 2021
Advice of delivery
Aug 16, 2021
Advice of delivery
Aug 16, 2021
Advice of delivery
Aug 13, 2021
Annex to the communication - opposition
Aug 13, 2021
Summons to attend oral proceedings
Aug 13, 2021
Summons to attend oral proceedings
Aug 13, 2021
Transmittal of decision / summons - opposition
Aug 13, 2021
Transmittal of decision / summons - opposition
Aug 13, 2021
Transmittal of decision / summons - opposition
Aug 13, 2021
Transmittal of decision / summons - opposition
Aug 13, 2021
Transmittal of decision / summons - opposition
May 20, 2021
Notification concerning the date of oral proceedings
May 20, 2021
Notification concerning the date of oral proceedings
May 14, 2021
Brief communication - Opposition proceedings
May 8, 2021
Oral proceedings: Request for postponement
May 3, 2021
Brief communication - Opposition proceedings
Apr 28, 2021
Oral proceedings: Request for postponement
Apr 27, 2021
Oral proceedings: Request for postponement
Apr 13, 2021
(Electronic) Receipt
Apr 13, 2021
Brief communication - Opposition proceedings
Apr 13, 2021
Letter accompanying subsequently filed items
Apr 7, 2021
(Electronic) Receipt
Apr 7, 2021
Letter accompanying subsequently filed items
Apr 7, 2021
Written submission in preparation to/during oral proceedings
Apr 6, 2021
Brief communication - Opposition proceedings
Apr 6, 2021
Brief communication - Opposition proceedings
Mar 26, 2021
(Electronic) Receipt
Mar 26, 2021
Citation in opposition procedure - 011
Mar 26, 2021
Citation in opposition procedure - 011
Mar 26, 2021
Letter accompanying subsequently filed items
Mar 26, 2021
Written submission in preparation to/during oral proceedings
Mar 26, 2021
Written submission in preparation to/during oral proceedings
Mar 25, 2021
(Electronic) Receipt
Mar 25, 2021
Letter accompanying subsequently filed items
Mar 25, 2021
Request for interpreters during oral proceedings
Mar 10, 2021
Advice of delivery
Mar 10, 2021
Advice of delivery
Mar 10, 2021
Advice of delivery
Mar 8, 2021
(Electronic) Receipt
Mar 8, 2021
Advice of delivery
Mar 8, 2021
Advice of delivery
Mar 8, 2021
Letter accompanying subsequently filed items
Mar 8, 2021
Notification concerning the date of oral proceedings
Mar 8, 2021
Notification concerning the date of oral proceedings
Mar 4, 2021
Acknowledgement of a document
Mar 4, 2021
Annex to a communication
Mar 4, 2021
Notification concerning the date of oral proceedings
Mar 4, 2021
Notification concerning the date of oral proceedings
Mar 4, 2021
Settlement of expenses for witnesses and experts
Mar 4, 2021
Settlement of expenses for witnesses and experts
Mar 4, 2021
Settlement of expenses for witnesses and experts
Mar 1, 2021
(Electronic) Receipt
Mar 1, 2021
Advice of delivery
Mar 1, 2021
Letter accompanying subsequently filed items
Nov 20, 2020
Advice of delivery
Nov 18, 2020
Advice of delivery
Nov 18, 2020
Advice of delivery
Nov 18, 2020
Advice of delivery
Nov 13, 2020
Advice of delivery
Nov 12, 2020
Acknowledgement of a document
Nov 12, 2020
Acknowledgement of a document
Nov 12, 2020
Acknowledgement of a document
Nov 12, 2020
Acknowledgement of a document
Nov 12, 2020
Acknowledgement of a document
Nov 12, 2020
Annex to the communication - opposition
Nov 12, 2020
Decision on the taking of evidence
Nov 12, 2020
Decision on the taking of evidence
Nov 12, 2020
Information concerning oral proceedings
Nov 12, 2020
Summons to attend oral proceedings
Nov 12, 2020
Summons to attend oral proceedings
Nov 12, 2020
Summons to give evidence
Nov 12, 2020
Summons to give evidence
Nov 12, 2020
Summons to give evidence
Aug 25, 2020
Brief communication - Opposition proceedings
Aug 19, 2020
(Electronic) Receipt
Aug 19, 2020
Letter accompanying subsequently filed items
Aug 19, 2020
Written submission in preparation to/during oral proceedings
Aug 17, 2020
Advice of delivery
Aug 14, 2020
Notification concerning the date of oral proceedings
Aug 14, 2020
Notification concerning the date of oral proceedings
Jul 31, 2020
(Electronic) Receipt
Jul 31, 2020
Brief communication - Opposition proceedings
Jul 31, 2020
Letter accompanying subsequently filed items
Jul 29, 2020
Brief communication - Opposition proceedings
Jul 23, 2020
Brief communication - Opposition proceedings
Jul 15, 2020
Brief communication - Opposition proceedings
Jul 14, 2020
Citation in opposition procedure - 010
Jul 14, 2020
Citation in opposition procedure - 010
Jul 14, 2020
Citation in opposition procedure - 012
Jul 14, 2020
Letter regarding the opposition procedure (no time limit)
Jul 14, 2020
Non-scannable object
Jul 14, 2020
Oral proceedings: reply to date proposed
Jul 13, 2020
Notification concerning the date of oral proceedings
Jul 13, 2020
Notification concerning the date of oral proceedings
Jul 10, 2020
(Electronic) Receipt
Jul 10, 2020
Brief communication - Opposition proceedings
Jul 10, 2020
Letter accompanying subsequently filed items
Jul 10, 2020
Oral proceedings: reply to date proposed
Jul 6, 2020
(Electronic) Receipt
Jul 6, 2020
Letter accompanying subsequently filed items
Jul 6, 2020
Request for interpreters during oral proceedings
Jul 3, 2020
Brief communication - Opposition proceedings
Jun 30, 2020
(Electronic) Receipt
Jun 30, 2020
Letter accompanying subsequently filed items
Jun 30, 2020
Written submission in preparation to/during oral proceedings
Jan 20, 2020
Advice of delivery
Jan 20, 2020
Brief communication - Opposition proceedings
Jan 16, 2020
Advice of delivery
Jan 15, 2020
Letter regarding the opposition procedure (no time limit)
Jan 8, 2020
Brief communication - Opposition proceedings
Dec 31, 2019
Letter regarding the opposition procedure (no time limit)
Dec 30, 2019
Advice of delivery
Dec 20, 2019
Advice of delivery
Dec 16, 2019
Advice of delivery
Dec 16, 2019
Letter regarding the opposition procedure (no time limit)
Dec 12, 2019
Acknowledgement of a document
Dec 12, 2019
Acknowledgement of a document
Dec 12, 2019
Acknowledgement of a document
Dec 12, 2019
Acknowledgement of a document
Dec 12, 2019
Information concerning oral proceedings
Dec 12, 2019
Summons to attend oral proceedings
Dec 12, 2019
Summons to attend oral proceedings
Dec 10, 2019
Brief communication - Opposition proceedings
Dec 10, 2019
Brief communication - Opposition proceedings
Dec 10, 2019
Notification concerning the date of oral proceedings
Dec 10, 2019
Notification concerning the date of oral proceedings
Nov 26, 2019
Brief communication - Opposition proceedings
Nov 21, 2019
Oral proceedings: Request for postponement
Nov 20, 2019
Advice of delivery
Nov 19, 2019
(Electronic) Receipt
Nov 19, 2019
Letter accompanying subsequently filed items
Nov 19, 2019
Written submission in preparation to/during oral proceedings
Nov 14, 2019
Advice of delivery
Nov 13, 2019
Advice of delivery
Nov 13, 2019
Advice of delivery
Nov 8, 2019
Acknowledgement of a document
Nov 8, 2019
Acknowledgement of a document
Nov 8, 2019
Acknowledgement of a document
Nov 8, 2019
Acknowledgement of a document
Nov 8, 2019
Annex to the communication - opposition
Nov 8, 2019
Decision on the taking of evidence
Nov 8, 2019
Information concerning oral proceedings
Nov 8, 2019
Settlement of expenses for witnesses and experts
Nov 8, 2019
Settlement of expenses for witnesses and experts
Nov 8, 2019
Summons to attend oral proceedings
Nov 8, 2019
Summons to attend oral proceedings
Nov 8, 2019
Summons to give evidence
May 22, 2019
Enlargement of the examining/opposition division
Jan 11, 2019
Brief communication - Opposition proceedings
Jan 7, 2019
(Electronic) Receipt
Jan 7, 2019
Citation in opposition procedure - 016
Jan 7, 2019
Citation in opposition procedure - 017
Jan 7, 2019
Letter accompanying subsequently filed items
Jan 7, 2019
Reply of the patent proprietor to the notice(s) of opposition
Sep 13, 2018
Brief communication - Opposition proceedings
Sep 6, 2018
Citation in opposition procedure - 007
Sep 6, 2018
Citation in opposition procedure - 009
Sep 6, 2018
Letter regarding the opposition procedure (no time limit)
Aug 30, 2018
Communication of a notice of opposition and request to file observations
Aug 30, 2018
Notice of further oppositions to opponent(s)
Aug 20, 2018
Communication of a notice of opposition - first information to patent proprietor
Aug 13, 2018
Citation in opposition procedure - 001
Aug 13, 2018
Citation in opposition procedure - 002
Aug 13, 2018
Citation in opposition procedure - 002
Aug 13, 2018
Citation in opposition procedure - 003
Aug 13, 2018
Citation in opposition procedure - 003
Aug 13, 2018
Citation in opposition procedure - 004
Aug 13, 2018
Citation in opposition procedure - 004
Aug 13, 2018
Citation in opposition procedure - 005
Aug 13, 2018
Citation in opposition procedure - 006
Aug 13, 2018
Citation in opposition procedure - 007
Aug 13, 2018
Citation in opposition procedure - 008
Aug 13, 2018
Citation in opposition procedure - 009
Aug 13, 2018
Citation in opposition procedure - 010
Aug 13, 2018
Citation in opposition procedure - 011
Aug 13, 2018
Citation in opposition procedure - 013
Aug 13, 2018
Citation in opposition procedure - 014
Aug 13, 2018
Citation in opposition procedure - 015
Aug 13, 2018
Notice of opposition
Nov 22, 2017
Transmission of the certificate for a European patent pursuant to Rule 74 EPC
Oct 19, 2017
Decision to grant a European patent
Oct 5, 2017
(Electronic) Receipt
Oct 5, 2017
English translation of the claims
Oct 5, 2017
Filing of the translations of the claims
Oct 5, 2017
French translation of claims
Oct 5, 2017
Letter accompanying subsequently filed items
Jul 25, 2017
Bibliographic data of the European patent application
Jul 25, 2017
Communication about intention to grant a European patent
Jul 25, 2017
Intention to grant (signatures)
Jul 25, 2017
Text intended for grant (clean copy)
Jul 25, 2017
Text intended for grant (version for approval)
May 29, 2017
Examination started
May 17, 2017
(Electronic) Receipt
May 17, 2017
Amended claims filed after receipt of (European) search report
May 17, 2017
Amended claims with annotations
May 17, 2017
Amended description filed after receipt of (European) search report
May 17, 2017
Amended description with annotations
May 17, 2017
Amendments received before examination
May 17, 2017
Letter accompanying subsequently filed items
Apr 5, 2017
(Electronic) Receipt
Apr 5, 2017
Letter accompanying subsequently filed items
Apr 5, 2017
Reply to invitation to file a copy of priority search results
Mar 30, 2017
Invitation to file a copy of search results(priority)
Jan 31, 2017
(Electronic) Receipt
Jan 31, 2017
Amended claims filed after receipt of (European) search report
Jan 31, 2017
Amended claims with annotations
Jan 31, 2017
Amendments received before examination
Jan 31, 2017
Letter accompanying subsequently filed items
Jan 27, 2017
Communication of amended entries concerning the representative
Jan 23, 2017
Submission concerning change of applicant's representative
Dec 19, 2016
Submission concerning representation
Oct 6, 2016
Notification on forthcoming publication of bibliographic data
Aug 11, 2016
Communication concerning correction of deficiencies in written opinion/amendment of application/payment of claims fee
Aug 2, 2016
Communication to designated inventor
Aug 2, 2016
Communication to designated inventor
Aug 2, 2016
Communication to designated inventor
Jul 12, 2016
Copy of the international preliminary report on patentability
Jul 8, 2016
Copy of the international preliminary report on patentability
Jul 7, 2016
(Electronic) Receipt
Jul 7, 2016
Request for entry into the European phase
Jul 7, 2016
Submission concerning representation
May 9, 2016
Information on entry into European phase
Jul 23, 2015
Priority document (electronically transmitted)
Jul 8, 2015
Notification of the recording of a change
Jul 8, 2015
Notification of the recording of a change
Jul 2, 2015
Copy of the international search report
Jul 2, 2015
Copy of the international search report
Jul 2, 2015
Published international application - A1
Mar 10, 2015
Written opinion of the ISA, boxes No. I to VIII
Mar 10, 2015
Written opinion of the ISA, cover sheet
Mar 10, 2015
Written opinion of the ISA, supplemental box
Dec 15, 2014
Abstract
Dec 15, 2014
Claims
Dec 15, 2014
Description
Dec 15, 2014
Drawings
Dec 15, 2014
Payment of fees and costs
Dec 15, 2014
Submission concerning representation

EP3087035

KURITA WATER INDUSTRIES

Application Number: EP14820748A
Filing Date: Dec 15, 2014
Status: Opposition Rejected; Jan 20, 2023
Publication Date: Nov 15, 2017
External Links: Slate, Register , Google Patents

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Method For Treatment Of Industrial Water Circuits Using Biocides

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Dossier Documents

EP3087035