Method Of Reducing The Viscosity Of Hydrocarbon Fluids

Patent No. EP2454339 (titled "Method Of Reducing The Viscosity Of Hydrocarbon Fluids") was filed by Nalco on Jul 9, 2010. The application was issued on Sep 27, 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
CLARIANT PRODUKTE DEUTSCHLAND	Jun 22, 2018	MIKULECKY

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 31, 2023
Termination of the opposition proceedings with revocation of patent
Aug 30, 2023
Refund of fees
Aug 29, 2023
Decision of the Board of Appeal
Aug 29, 2023
F3032 Notification(s) of the decision
Aug 29, 2023
F3032 Notification(s) of the decision
Aug 24, 2023
F3345 Forwarding of submissions to parties
Aug 18, 2023
(Electronic) Receipt
Aug 18, 2023
Letter accompanying subsequently filed items
Aug 18, 2023
Letter dealing with oral proceedings during the appeal procedure
May 4, 2023
F3345 Forwarding of submissions to parties
Apr 28, 2023
(Electronic) Receipt
Apr 28, 2023
Letter accompanying subsequently filed items
Apr 28, 2023
Letter relating to Appeal Procedure
Apr 25, 2023
F3326 Communication with time limit (inter partes)
Apr 25, 2023
F3326 Communication with time limit (inter partes)
Jun 23, 2022
F3345 Forwarding of submissions to parties
Jun 20, 2022
(Electronic) Receipt
Jun 20, 2022
Letter accompanying subsequently filed items
Jun 20, 2022
Letter relating to Appeal Procedure
May 23, 2022
F3004 Communication of the Registry
May 23, 2022
F3004 Communication of the Registry
Jan 24, 2022
F3303.16 Change of composition of the Board (T)
Nov 10, 2021
Document concerning representation
Nov 10, 2021
Letter accompanying subsequently filed items
Oct 2, 2020
F3345 Forwarding of submissions to parties
Oct 1, 2020
F3345 Forwarding of submissions to parties
Sep 16, 2020
(Electronic) Receipt
Sep 16, 2020
Letter accompanying subsequently filed items
Sep 16, 2020
Non-Patent Literature cited during the appeal procedure
Sep 16, 2020
Non-Patent Literature cited during the appeal procedure
Sep 16, 2020
Non-Patent Literature cited during the appeal procedure
Sep 16, 2020
Non-Patent Literature cited during the appeal procedure
Sep 16, 2020
Reply to appeal
Sep 16, 2020
Withdrawal of an appeal
Jun 4, 2020
Communication of amended entries concerning the representative
May 29, 2020
Submission concerning change of applicant's representative
May 25, 2020
F3344 Setting time limit for reply/ file observations to appeal (inter partes)
May 25, 2020
F3344 Setting time limit for reply/ file observations to appeal (inter partes)
May 16, 2020
(Electronic) Receipt
May 16, 2020
Amended claims with annotations
May 16, 2020
Amended claims with annotations
May 16, 2020
Amended claims with annotations
May 16, 2020
Amended claims with annotations
May 16, 2020
Amended claims with annotations
May 16, 2020
Amended claims with annotations
May 16, 2020
Amended claims with annotations
May 16, 2020
Amended claims with annotations
May 16, 2020
Amended claims with annotations
May 16, 2020
Amended claims with annotations
May 16, 2020
Amended claims with annotations
May 16, 2020
Amended claims with annotations
May 16, 2020
Amended claims with annotations
May 16, 2020
Amended claims with annotations
May 16, 2020
Amended claims with annotations
May 16, 2020
Amended claims with annotations
May 16, 2020
Claims
May 16, 2020
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May 16, 2020
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May 16, 2020
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May 16, 2020
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May 16, 2020
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May 16, 2020
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May 16, 2020
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May 16, 2020
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May 16, 2020
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May 16, 2020
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May 16, 2020
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May 16, 2020
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May 16, 2020
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May 16, 2020
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May 16, 2020
Claims
May 16, 2020
Claims
May 16, 2020
Claims
May 16, 2020
Letter regarding the opposition procedure (no time limit)
May 16, 2020
Statement of grounds of appeal
May 14, 2020
Composition of the board (T)
May 4, 2020
Statement of grounds of appeal
Mar 19, 2020
F3204 Communication of the file number to the parties
Mar 13, 2020
(Electronic) Receipt
Mar 13, 2020
F3204 Communication of the file number to the parties
Mar 13, 2020
Letter accompanying subsequently filed items
Mar 13, 2020
Notice of appeal
Mar 9, 2020
(Electronic) Receipt
Mar 9, 2020
Letter accompanying subsequently filed items
Mar 9, 2020
Notice of appeal
Jan 17, 2020
Advice of delivery
Jan 13, 2020
Advice of delivery
Jan 7, 2020
Acknowledgement of a document
Jan 7, 2020
Acknowledgement of a document
Jan 7, 2020
Annex to the communication - opposition
Jan 7, 2020
Decision of the Opposition Division and instruction
Jan 7, 2020
Druckexemplar in opposition procedure
Jan 7, 2020
Grounds for the decision (Annex) - opposition
Jan 7, 2020
Interlocutory decision in opposition proceedings
Jan 7, 2020
Internal form - Opposition/addressees
Jan 7, 2020
Internal form - Opposition/addressees
Jan 7, 2020
Means of redress
Jan 7, 2020
Minutes of the oral proceedings (Opposition Division) - conclusion of the proceedings
Jan 7, 2020
Minutes of the oral proceedings (Opposition Division) - conclusion of the proceedings
Jan 7, 2020
Minutes of the oral proceedings (Opposition Division) - introduction of the parties
Jan 7, 2020
Provision of a copy of the minutes - opposition procedure
Jan 7, 2020
Scanned annex to a communication - opposition procedure
Jan 7, 2020
Scanned annex to a communication - opposition procedure
Dec 10, 2019
Information about the result of oral proceedings
Dec 5, 2019
Brief communication - Opposition proceedings
Dec 2, 2019
(Electronic) Receipt
Dec 2, 2019
Citation in opposition procedure
Dec 2, 2019
Letter accompanying subsequently filed items
Dec 2, 2019
Written submission in preparation to/during oral proceedings
Nov 28, 2019
Brief communication - Opposition proceedings
Nov 28, 2019
Brief communication - Opposition proceedings
Nov 22, 2019
(Electronic) Receipt
Nov 22, 2019
Letter accompanying subsequently filed items
Nov 22, 2019
Written submission in preparation to/during oral proceedings
Nov 18, 2019
Letter regarding the opposition procedure (no time limit)
Nov 5, 2019
Brief communication - Opposition proceedings
Oct 29, 2019
(Electronic) Receipt
Oct 29, 2019
Letter accompanying subsequently filed items
Oct 29, 2019
Written submission in preparation to/during oral proceedings
Oct 15, 2019
Brief communication - Opposition proceedings
Oct 10, 2019
(Electronic) Receipt
Oct 10, 2019
Amended claims with annotations
Oct 10, 2019
Amended claims with annotations
Oct 10, 2019
Amended claims with annotations
Oct 10, 2019
Amended claims with annotations
Oct 10, 2019
Amended claims with annotations
Oct 10, 2019
Amended claims with annotations
Oct 10, 2019
Amended claims with annotations
Oct 10, 2019
Amended claims with annotations
Oct 10, 2019
Amended claims with annotations
Oct 10, 2019
Amended claims with annotations
Oct 10, 2019
Amended claims with annotations
Oct 10, 2019
Amended claims with annotations
Oct 10, 2019
Amended claims with annotations
Oct 10, 2019
Amended claims with annotations
Oct 10, 2019
Amended claims with annotations
Oct 10, 2019
Amended claims with annotations
Oct 10, 2019
Amended claims with annotations
Oct 10, 2019
Claims
Oct 10, 2019
Claims
Oct 10, 2019
Claims
Oct 10, 2019
Claims
Oct 10, 2019
Claims
Oct 10, 2019
Claims
Oct 10, 2019
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Oct 10, 2019
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Oct 10, 2019
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Oct 10, 2019
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Oct 10, 2019
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Oct 10, 2019
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Oct 10, 2019
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Oct 10, 2019
Claims
Oct 10, 2019
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Oct 10, 2019
Claims
Oct 10, 2019
Claims
Oct 10, 2019
Letter accompanying subsequently filed items
Oct 10, 2019
Non-patent literature cited during the opposition procedure
Oct 10, 2019
Non-patent literature cited during the opposition procedure
Oct 10, 2019
Written submission in preparation to/during oral proceedings
Aug 29, 2019
Brief communication - Opposition proceedings
Aug 20, 2019
Citation in opposition procedure
Aug 20, 2019
Non-patent literature cited during the opposition procedure
Aug 20, 2019
Written submission in preparation to/during oral proceedings
Jun 26, 2019
Advice of delivery
Jun 4, 2019
Brief communication - Opposition proceedings
May 24, 2019
(Electronic) Receipt
May 24, 2019
Letter accompanying subsequently filed items
May 24, 2019
Request for interpreters during oral proceedings
Apr 15, 2019
Brief communication - Opposition proceedings
Apr 9, 2019
Advice of delivery
Apr 9, 2019
Advice of delivery
Apr 9, 2019
Authorisation
Apr 9, 2019
Request for interpreters during oral proceedings
Apr 8, 2019
Advice of delivery
Apr 3, 2019
Acknowledgement of a document
Apr 3, 2019
Acknowledgement of a document
Apr 3, 2019
Annex to the communication - opposition
Apr 3, 2019
Information concerning oral proceedings
Apr 3, 2019
Summons to attend oral proceedings
Apr 3, 2019
Summons to attend oral proceedings
Feb 27, 2019
Miscellaneous requests concerning client data
Feb 12, 2019
Brief communication - Opposition proceedings
Feb 1, 2019
Letter regarding the opposition procedure (no time limit)
Nov 20, 2018
Brief communication - Opposition proceedings
Nov 8, 2018
(Electronic) Receipt
Nov 8, 2018
Amended claims with annotations
Nov 8, 2018
Amended claims with annotations
Nov 8, 2018
Amended claims with annotations
Nov 8, 2018
Claims
Nov 8, 2018
Claims
Nov 8, 2018
Claims
Nov 8, 2018
Letter accompanying subsequently filed items
Nov 8, 2018
Reply of the patent proprietor to the notice(s) of opposition
Jul 11, 2018
Communication of a notice of opposition and request to file observations
Jul 11, 2018
Notice of further oppositions to opponent(s)
Jul 2, 2018
Communication of a notice of opposition - first information to patent proprietor
Jun 22, 2018
(Electronic) Receipt
Jun 22, 2018
Non-patent literature cited during the opposition procedure
Jun 22, 2018
Non-patent literature cited during the opposition procedure
Jun 22, 2018
Non-patent literature cited during the opposition procedure
Jun 22, 2018
Notice of opposition
Jun 22, 2018
Notice of opposition
Jun 22, 2018
Patent document cited during the opposition procedure
Jun 22, 2018
Patent document cited during the opposition procedure
Oct 5, 2017
Transmission of the certificate for a European patent pursuant to Rule 74 EPC
Aug 31, 2017
Decision to grant a European patent
Aug 14, 2017
(Electronic) Receipt
Aug 14, 2017
Filing of the translations of the claims
Aug 14, 2017
French translation of claims
Aug 14, 2017
German translation of the claims
Aug 14, 2017
Letter accompanying subsequently filed items
Apr 13, 2017
Bibliographic data of the European patent application
Apr 13, 2017
Communication about intention to grant a European patent
Apr 13, 2017
Intention to grant (signatures)
Apr 13, 2017
Text intended for grant (clean copy)
Apr 13, 2017
Text intended for grant (version for approval)
Apr 5, 2017
Processing of request for correction of text proposed for grant or third party observations (from 01-04-2012)
Mar 23, 2017
(Electronic) Receipt
Mar 23, 2017
Amended claims with annotations
Mar 23, 2017
Claims
Mar 23, 2017
Letter accompanying subsequently filed items
Mar 23, 2017
Request for correction/amendment of the text proposed for grant sent from 01.04.2012
Mar 2, 2017
Communication of amended entries concerning the representative
Feb 24, 2017
Bibliographic data of the European patent application
Feb 24, 2017
Communication about intention to grant a European patent
Feb 24, 2017
Intention to grant (signatures)
Feb 24, 2017
Text intended for grant (clean copy)
Feb 24, 2017
Text intended for grant (version for approval)
Feb 22, 2017
Submission concerning change of applicant's representative
Aug 22, 2016
(Electronic) Receipt
Aug 22, 2016
Amended claims with annotations
Aug 22, 2016
Amended description with annotations
Aug 22, 2016
Claims
Aug 22, 2016
Description
Aug 22, 2016
Letter accompanying subsequently filed items
Aug 22, 2016
Reply to communication from the Examining Division
Aug 8, 2016
Communication of amended entries concerning the representative
Jul 8, 2016
Annex to the communication
Jul 8, 2016
Communication from the Examining Division
Jun 29, 2016
Annexes in respect of a client data request
Jun 29, 2016
Submission concerning change of applicant's representative
May 12, 2016
Examination started
Jul 5, 2013
Communication of amended entries concerning the representative
Jul 1, 2013
Submission concerning change of applicant's representative
Jun 13, 2013
(Electronic) Receipt
Jun 13, 2013
Letter accompanying subsequently filed items
Jun 13, 2013
Reply to Written Opinion prepared by the EPO
May 3, 2013
Submission concerning representation
Dec 20, 2012
Invitation to declare maintenance of the application and to correct deficiencies in the Written Opinion/amend application
Dec 3, 2012
Communication regarding the transmission of the European search report
Dec 3, 2012
European search opinion
Dec 3, 2012
Supplementary European search report
Apr 25, 2012
Notification on forthcoming publication of bibliographic data
Mar 16, 2012
Communication regarding possible amendment of the application/payment of claims fee
Feb 10, 2012
(Electronic) Receipt
Feb 10, 2012
Request for entry into the European phase
Jan 27, 2012
Copy of the international preliminary report on patentability
Nov 18, 2011
Information on entry into European phase
Apr 21, 2011
Copy of the international search report
Apr 21, 2011
International publication of the international search report
Feb 4, 2011
Priority document (electronically transmitted)
Jan 13, 2011
Published international application - A2

EP2454339

NALCO

Application Number: EP10797885A
Filing Date: Jul 9, 2010
Status: Revoked; Sep 1, 2023
Publication Date: Sep 27, 2017
External Links: Slate, Register , Google Patents

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Method Of Reducing The Viscosity Of Hydrocarbon Fluids

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Dossier Documents

EP2454339