Method For Preparation Of An Oil-In-Water Emulsion

Patent No. EP3131421 (titled "Method For Preparation Of An Oil-In-Water Emulsion") was filed by Unilever on Nov 3, 2014. The application was issued on Oct 1, 2025.

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
RUPP	Dec 20, 2018	RUPP

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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Sep 4, 2025
Decision to maintain the European patent in amended form
Sep 4, 2025
Decision to maintain the European patent in amended form
Aug 26, 2025
Communication of the registration of a transfer or change of name and/or address
Aug 15, 2025
(Electronic) Receipt
Aug 15, 2025
French translation of claims
Aug 15, 2025
German translation of the claims
Aug 15, 2025
Letter accompanying subsequently filed items
Aug 6, 2025
Annexes in respect of a client data request
Aug 6, 2025
Letter accompanying subsequently filed items
Aug 6, 2025
Submission concerning change of applicant's address
Jun 10, 2025
Communication of bibliographic data
Jun 10, 2025
Communication to opponent concerning maintenance
Jun 10, 2025
Communication with request to file translations
May 28, 2025
Maintenance of the patent with the documents specified in the final decision
Feb 27, 2025
Annex to the communication - opposition
Feb 27, 2025
Brief communication - Opposition proceedings
Feb 27, 2025
Brief communication - Opposition proceedings
Feb 27, 2025
Decision of the Opposition Division and instruction
Feb 27, 2025
Druckexemplar in opposition procedure
Feb 27, 2025
Grounds for the decision (Annex) - opposition
Feb 27, 2025
Interlocutory decision in opposition proceedings
Feb 27, 2025
Interlocutory decision in opposition proceedings
Feb 27, 2025
Means of redress
Feb 27, 2025
Minutes of the oral proceedings (Opposition Division) - conclusion of the proceedings
Feb 27, 2025
Minutes of the oral proceedings (Opposition Division) - introduction of the parties
Feb 27, 2025
Provision of a copy of the minutes - opposition procedure
Feb 27, 2025
Provision of a copy of the minutes - opposition procedure
Feb 27, 2025
Scanned annex to a communication - opposition procedure
Feb 27, 2025
Scanned annex to a communication - opposition procedure
Feb 11, 2025
Information about the result of oral proceedings
Jan 15, 2025
Brief communication - Opposition proceedings
Jan 10, 2025
(Electronic) Receipt
Jan 10, 2025
Letter accompanying subsequently filed items
Jan 10, 2025
Written submission in preparation to/during oral proceedings
Dec 16, 2024
Brief communication - Opposition proceedings
Dec 11, 2024
(Electronic) Receipt
Dec 11, 2024
Auxiliary request during Opposition procedure
Dec 11, 2024
Auxiliary request during Opposition procedure - 15
Dec 11, 2024
Letter accompanying subsequently filed items
Dec 11, 2024
Written submission in preparation to/during oral proceedings
Nov 12, 2024
Brief communication - Opposition proceedings
Nov 8, 2024
Brief communication - Opposition proceedings
Nov 7, 2024
(Electronic) Receipt
Nov 7, 2024
Letter accompanying subsequently filed items
Nov 7, 2024
Written submission in preparation to/during oral proceedings
Nov 5, 2024
(Electronic) Receipt
Nov 5, 2024
Letter accompanying subsequently filed items
Nov 5, 2024
Written submission in preparation to/during oral proceedings
Mar 7, 2024
Annex to the communication - opposition
Mar 7, 2024
Brief communication - Opposition proceedings
Mar 7, 2024
Brief communication - Opposition proceedings
Mar 7, 2024
Information concerning oral proceedings
Mar 7, 2024
Scanned annex to a communication - opposition procedure
Mar 7, 2024
Summons to attend oral proceedings
Mar 7, 2024
Summons to attend oral proceedings
Nov 15, 2023
Decision of the Board of Appeal
Nov 15, 2023
F3032 Notification(s) of the decision
Nov 15, 2023
F3032 Notification(s) of the decision
Oct 5, 2023
F3013 Oral Proceedings: Forwarding minutes
Oct 5, 2023
F3013 Oral Proceedings: Forwarding minutes
Oct 5, 2023
F3315 Oral Proceedings: Minutes (Appellant : Proprietor)
Sep 20, 2023
F3345 Forwarding of submissions to parties
Sep 14, 2023
(Electronic) Receipt
Sep 14, 2023
Letter accompanying subsequently filed items
Sep 14, 2023
Letter dealing with oral proceedings during the appeal procedure
Aug 28, 2023
F3345 Forwarding of submissions to parties
Aug 23, 2023
(Electronic) Receipt
Aug 23, 2023
Letter accompanying subsequently filed items
Aug 23, 2023
Letter dealing with oral proceedings during the appeal procedure
Aug 22, 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
Jul 4, 2023
Letter accompanying subsequently filed items
Jul 4, 2023
Letter accompanying subsequently filed items
Jul 4, 2023
Submission concerning change of applicant's address
May 25, 2023
Miscellaneous requests concerning client data
Apr 19, 2023
F3345 Forwarding of submissions to parties
Apr 14, 2023
(Electronic) Receipt
Apr 14, 2023
Letter accompanying subsequently filed items
Apr 14, 2023
Letter dealing with oral proceedings during the appeal procedure
Apr 13, 2023
F3345 Forwarding of submissions to parties
Apr 6, 2023
(Electronic) Receipt
Apr 6, 2023
Letter dealing with oral proceedings during the appeal procedure
Mar 28, 2023
Oral proceedings: change of venue
Mar 28, 2023
Oral proceedings: change of venue
Feb 16, 2023
F3305 Communication of the Board of Appeal (ex parte/ inter partes)
Feb 16, 2023
F3305 Communication of the Board of Appeal (ex parte/ inter partes)
Feb 6, 2023
Communication of amended entries in the Register of European Patents
Feb 6, 2023
Communication of amended entries in the Register of European Patents
Feb 6, 2023
F3004 Communication of the Registry
Feb 6, 2023
F3004 Communication of the Registry
Jan 9, 2023
Document concerning representation
Jan 9, 2023
General authorisation
Jan 9, 2023
Letter accompanying subsequently filed items
May 30, 2022
F3011.1 Oral Proceedings: summons
May 30, 2022
F3011.1 Oral Proceedings: summons
May 24, 2022
F3010 Oral proceedings: order for summons
May 4, 2022
F3303.16 Change of composition of the Board (T)
Nov 19, 2021
F3345 Forwarding of submissions to parties
Nov 15, 2021
(Electronic) Receipt
Nov 15, 2021
Letter accompanying subsequently filed items
Nov 15, 2021
Reply to appeal
Oct 22, 2021
Composition of the board (T)
Aug 17, 2021
F3345 Forwarding of submissions to parties
Aug 12, 2021
(Electronic) Receipt
Aug 12, 2021
Letter accompanying subsequently filed items
Aug 12, 2021
Letter relating to Appeal Procedure
Aug 5, 2021
F3344 Setting time limit for reply/ file observations to appeal (inter partes)
Jul 30, 2021
(Electronic) Receipt
Jul 30, 2021
Amended claims with annotations
Jul 30, 2021
Amended claims with annotations
Jul 30, 2021
Amended claims with annotations
Jul 30, 2021
Amended claims with annotations
Jul 30, 2021
Amended claims with annotations
Jul 30, 2021
Amended claims with annotations
Jul 30, 2021
Amended claims with annotations
Jul 30, 2021
Amended claims with annotations
Jul 30, 2021
Amended claims with annotations
Jul 30, 2021
Amended claims with annotations
Jul 30, 2021
Amended claims with annotations
Jul 30, 2021
Amended claims with annotations
Jul 30, 2021
Amended claims with annotations
Jul 30, 2021
Amended claims with annotations
Jul 30, 2021
Auxiliary request during appeals procedure - 01
Jul 30, 2021
Auxiliary request during appeals procedure - 02
Jul 30, 2021
Auxiliary request during appeals procedure - 03
Jul 30, 2021
Auxiliary request during appeals procedure - 04
Jul 30, 2021
Auxiliary request during appeals procedure - 05
Jul 30, 2021
Auxiliary request during appeals procedure - 06
Jul 30, 2021
Auxiliary request during appeals procedure - 07
Jul 30, 2021
Auxiliary request during appeals procedure - 08
Jul 30, 2021
Auxiliary request during appeals procedure - 09
Jul 30, 2021
Auxiliary request during appeals procedure - 10
Jul 30, 2021
Auxiliary request during appeals procedure - 11
Jul 30, 2021
Auxiliary request during appeals procedure - 12
Jul 30, 2021
Auxiliary request during appeals procedure - 13
Jul 30, 2021
Auxiliary request during appeals procedure - 14
Jul 30, 2021
Letter accompanying subsequently filed items
Jul 30, 2021
Non-Patent Literature cited during the appeal procedure
Jul 30, 2021
Non-Patent Literature cited during the appeal procedure
Jul 30, 2021
Non-Patent Literature cited during the appeal procedure
Jul 30, 2021
Non-Patent Literature cited during the appeal procedure
Jul 30, 2021
Non-Patent Literature cited during the appeal procedure
Jul 30, 2021
Non-Patent Literature cited during the appeal procedure
Jul 30, 2021
Non-Patent Literature cited during the appeal procedure
Jul 30, 2021
Non-Patent Literature cited during the appeal procedure
Jul 30, 2021
Non-Patent Literature cited during the appeal procedure
Jul 30, 2021
Non-Patent Literature cited during the appeal procedure
Jul 30, 2021
Patent Document cited during the appeal procedure
Jul 30, 2021
Patent Document cited during the appeal procedure
Jul 30, 2021
Patent Document cited during the appeal procedure
Jul 30, 2021
Patent Document cited during the appeal procedure
Jul 30, 2021
Patent Document cited during the appeal procedure
Jul 30, 2021
Patent Document cited during the appeal procedure
Jul 30, 2021
Patent Document cited during the appeal procedure
Jul 30, 2021
Patent Document cited during the appeal procedure
Jul 30, 2021
Patent Document cited during the appeal procedure
Jul 30, 2021
Patent Document cited during the appeal procedure
Jul 30, 2021
Patent Document cited during the appeal procedure
Jul 30, 2021
Statement of grounds of appeal
May 28, 2021
F3204 Communication of the file number to the parties
May 28, 2021
F3204 Communication of the file number to the parties
May 20, 2021
(Electronic) Receipt
May 20, 2021
Letter accompanying subsequently filed items
May 20, 2021
Notice of appeal
Mar 22, 2021
(Electronic) Receipt
Mar 22, 2021
(Electronic) Receipt
Mar 22, 2021
Advice of delivery
Mar 22, 2021
Advice of delivery
Mar 22, 2021
Annex to the communication - opposition
Mar 22, 2021
Decision of the Opposition Division and instruction
Mar 22, 2021
Decision revoking the European patent
Mar 22, 2021
Grounds for the decision (Annex) - opposition
Mar 22, 2021
Internal form - Opposition/addressees
Mar 22, 2021
Internal form - Opposition/addressees
Mar 22, 2021
Letter accompanying subsequently filed items
Mar 22, 2021
Letter accompanying subsequently filed items
Mar 22, 2021
Means of redress
Mar 22, 2021
Minutes of the oral proceedings (Opposition Division) - conclusion of the proceedings
Mar 22, 2021
Minutes of the oral proceedings (Opposition Division) - conclusion of the proceedings
Mar 22, 2021
Minutes of the oral proceedings (Opposition Division) - introduction of the parties
Mar 22, 2021
Provision of a copy of the minutes - opposition procedure
Mar 22, 2021
Scanned annex to a communication - opposition procedure
Mar 22, 2021
Scanned annex to a communication - opposition procedure
Mar 22, 2021
Scanned annex to a communication - opposition procedure
Mar 22, 2021
Transmittal of decision / summons - opposition
Mar 22, 2021
Transmittal of decision / summons - opposition
Feb 9, 2021
Information about the result of oral proceedings
Feb 8, 2021
Brief communication - Opposition proceedings
Feb 3, 2021
Brief communication - Opposition proceedings
Feb 1, 2021
(Electronic) Receipt
Feb 1, 2021
Citation in opposition procedure - 019
Feb 1, 2021
Citation in opposition procedure - 020
Feb 1, 2021
Citation in opposition procedure - 021
Feb 1, 2021
Consolidated list of cited opposition documents
Feb 1, 2021
Letter accompanying subsequently filed items
Feb 1, 2021
Written submission in preparation to/during oral proceedings
Jan 20, 2021
Communication of the registration of a transfer or change of name and/or address
Jan 14, 2021
Brief communication - Opposition proceedings
Jan 7, 2021
(Electronic) Receipt
Jan 7, 2021
Auxiliary request during Opposition procedure
Jan 7, 2021
Auxiliary request during Opposition procedure
Jan 7, 2021
Auxiliary request during Opposition procedure
Jan 7, 2021
Auxiliary request during Opposition procedure
Jan 7, 2021
Auxiliary request during Opposition procedure
Jan 7, 2021
Auxiliary request during Opposition procedure
Jan 7, 2021
Auxiliary request during Opposition procedure
Jan 7, 2021
Auxiliary request during Opposition procedure
Jan 7, 2021
Auxiliary request during Opposition procedure
Jan 7, 2021
Auxiliary request during Opposition procedure
Jan 7, 2021
Auxiliary request during Opposition procedure
Jan 7, 2021
Auxiliary request during Opposition procedure
Jan 7, 2021
Auxiliary request during Opposition procedure - 01
Jan 7, 2021
Auxiliary request during Opposition procedure - 02
Jan 7, 2021
Auxiliary request during Opposition procedure - 03
Jan 7, 2021
Auxiliary request during Opposition procedure - 04
Jan 7, 2021
Auxiliary request during Opposition procedure - 05
Jan 7, 2021
Auxiliary request during Opposition procedure - 06
Jan 7, 2021
Auxiliary request during Opposition procedure - 07
Jan 7, 2021
Auxiliary request during Opposition procedure - 08
Jan 7, 2021
Auxiliary request during Opposition procedure - 09
Jan 7, 2021
Auxiliary request during Opposition procedure - 10
Jan 7, 2021
Auxiliary request during Opposition procedure - 11
Jan 7, 2021
Auxiliary request during Opposition procedure - 12
Jan 7, 2021
Citation in opposition procedure - 018
Jan 7, 2021
Letter accompanying subsequently filed items
Jan 7, 2021
Written submission in preparation to/during oral proceedings
Dec 10, 2020
Annexes in respect of a client data request
Dec 10, 2020
Annexes in respect of a client data request
Dec 10, 2020
Submission concerning a transfer of rights (applicant)
Dec 3, 2020
(Electronic) Receipt
Dec 3, 2020
Letter accompanying subsequently filed items
Nov 30, 2020
Notification concerning the date of oral proceedings
Nov 30, 2020
Notification concerning the date of oral proceedings
Oct 30, 2020
Brief communication - Opposition proceedings
Oct 27, 2020
(Electronic) Receipt
Oct 27, 2020
Letter accompanying subsequently filed items
Oct 27, 2020
Written submission in preparation to/during oral proceedings
Oct 1, 2020
Document concerning representation
Sep 29, 2020
(Electronic) Receipt
Sep 29, 2020
Advice of delivery
Sep 29, 2020
Letter accompanying subsequently filed items
Sep 24, 2020
Advice of delivery
Sep 21, 2020
Acknowledgement of a document
Sep 21, 2020
Acknowledgement of a document
Sep 21, 2020
Annex to the communication - opposition
Sep 21, 2020
Summons to attend oral proceedings
Sep 21, 2020
Summons to attend oral proceedings
Jun 23, 2020
Brief communication - Opposition proceedings
Jun 18, 2020
(Electronic) Receipt
Jun 18, 2020
Letter accompanying subsequently filed items
Jun 18, 2020
Letter regarding the opposition procedure (no time limit)
Jun 12, 2020
(Electronic) Receipt
Jun 12, 2020
Advice of delivery
Jun 12, 2020
Letter accompanying subsequently filed items
Jun 9, 2020
Advice of delivery
Jun 4, 2020
Notification concerning the date of oral proceedings
Jun 4, 2020
Notification concerning the date of oral proceedings
May 29, 2020
Oral proceedings: reply to date proposed
May 29, 2020
Oral proceedings: reply to date proposed
Apr 29, 2020
Brief communication - Opposition proceedings
Apr 23, 2020
(Electronic) Receipt
Apr 23, 2020
Auxiliary request during Opposition procedure - 06
Apr 23, 2020
Auxiliary request during Opposition procedure - 07
Apr 23, 2020
Auxiliary request during Opposition procedure - 08
Apr 23, 2020
Auxiliary request during Opposition procedure - 09
Apr 23, 2020
Auxiliary request during Opposition procedure - 10
Apr 23, 2020
Letter accompanying subsequently filed items
Apr 23, 2020
Written submission in preparation to/during oral proceedings
Mar 12, 2020
Brief communication - Opposition proceedings
Mar 11, 2020
Brief communication - Opposition proceedings
Mar 9, 2020
(Electronic) Receipt
Mar 9, 2020
Letter accompanying subsequently filed items
Mar 9, 2020
Request for interpreters during oral proceedings
Mar 6, 2020
(Electronic) Receipt
Mar 6, 2020
Citation in opposition procedure - 015
Mar 6, 2020
Letter accompanying subsequently filed items
Mar 6, 2020
Written submission in preparation to/during oral proceedings
Oct 21, 2019
Advice of delivery
Oct 17, 2019
Brief communication - Opposition proceedings
Oct 14, 2019
(Electronic) Receipt
Oct 14, 2019
Citation in opposition procedure - 016
Oct 14, 2019
Citation in opposition procedure - 017
Oct 14, 2019
Letter accompanying subsequently filed items
Oct 14, 2019
Written submission in preparation to/during oral proceedings
Oct 10, 2019
Advice of delivery
Oct 3, 2019
Advice of delivery
Oct 2, 2019
Advice of delivery
Sep 27, 2019
Acknowledgement of a document
Sep 27, 2019
Acknowledgement of a document
Sep 27, 2019
Annex to the communication - opposition
Sep 27, 2019
Information concerning oral proceedings
Sep 27, 2019
Summons to attend oral proceedings
Sep 27, 2019
Summons to attend oral proceedings
Jul 31, 2019
Brief communication - Opposition proceedings
Jul 26, 2019
(Electronic) Receipt
Jul 26, 2019
Letter accompanying subsequently filed items
Jul 26, 2019
Reply from the opponent to submission of proprietor
May 31, 2019
Brief communication - Opposition proceedings
May 24, 2019
(Electronic) Receipt
May 24, 2019
Auxiliary request during Opposition procedure - 01
May 24, 2019
Auxiliary request during Opposition procedure - 02
May 24, 2019
Auxiliary request during Opposition procedure - 03
May 24, 2019
Auxiliary request during Opposition procedure - 04
May 24, 2019
Auxiliary request during Opposition procedure - 05
May 24, 2019
Letter accompanying subsequently filed items
May 24, 2019
Reply of the patent proprietor to the notice(s) of opposition
Jan 15, 2019
Communication of a notice of opposition and request to file observations
Jan 15, 2019
Notice of further oppositions to opponent(s)
Jan 3, 2019
Communication of a notice of opposition - first information to patent proprietor
Dec 20, 2018
(Electronic) Receipt
Dec 20, 2018
Citation in opposition procedure - 001
Dec 20, 2018
Citation in opposition procedure - 002
Dec 20, 2018
Citation in opposition procedure - 003
Dec 20, 2018
Citation in opposition procedure - 004
Dec 20, 2018
Citation in opposition procedure - 005
Dec 20, 2018
Citation in opposition procedure - 006
Dec 20, 2018
Citation in opposition procedure - 007
Dec 20, 2018
Citation in opposition procedure - 008
Dec 20, 2018
Citation in opposition procedure - 009
Dec 20, 2018
Citation in opposition procedure - 010
Dec 20, 2018
Citation in opposition procedure - 011
Dec 20, 2018
Citation in opposition procedure - 012
Dec 20, 2018
Citation in opposition procedure - 013
Dec 20, 2018
Citation in opposition procedure - 014
Dec 20, 2018
International publication (Pamphlet)
Dec 20, 2018
Notice of opposition
Dec 20, 2018
Notice of opposition
Apr 3, 2018
Transmission of the certificate for a European patent pursuant to Rule 74 EPC
Feb 22, 2018
Decision to grant a European patent
Feb 5, 2018
(Electronic) Receipt
Feb 5, 2018
French translation of claims
Feb 5, 2018
German translation of the claims
Feb 5, 2018
Letter accompanying subsequently filed items
Nov 2, 2017
Bibliographic data of the European patent application
Nov 2, 2017
Communication about intention to grant a European patent
Nov 2, 2017
Intention to grant (signatures)
Nov 2, 2017
Text intended for grant (clean copy)
Nov 2, 2017
Text intended for grant (version for approval)
Oct 2, 2017
Examination started
Sep 5, 2017
Request for change of applicant's representative
Jan 25, 2017
Notification on forthcoming publication of bibliographic data
Jul 15, 2016
Communication to designated inventor
Jul 15, 2016
Communication to designated inventor
Jul 15, 2016
Communication to designated inventor
Jul 12, 2016
Priority search results copy provided by EPO
Jun 21, 2016
Annexes to the international preliminary examination report
Jun 21, 2016
Copy of the international preliminary examination report
Jun 8, 2016
Refund of fees
May 3, 2016
(Electronic) Receipt
May 3, 2016
Request for entry into the European phase
Apr 22, 2016
Information on entry into European phase
Dec 1, 2015
Annex to International preliminary examination report
Dec 1, 2015
International preliminary examination report
Dec 1, 2015
International preliminary examination report - free text sheet
Dec 1, 2015
International preliminary examination report - points I-VIII
Dec 1, 2015
Transmittal of International Preliminary Examination Report
Nov 3, 2015
Notification of election of EPO
Oct 16, 2015
Notification of receipt of demand
Oct 12, 2015
Document concerning fees and payments
Oct 12, 2015
PCT demand form
Oct 12, 2015
PCT(IPEA): Amended sheet - claims
Oct 12, 2015
PCT(IPEA): Amended sheet - claims
Oct 12, 2015
Reply to International Search Opinion
Oct 8, 2015
Document concerning fees and payments
Oct 8, 2015
PCT demand form
Oct 8, 2015
PCT(IPEA): Amended sheet - claims
Oct 8, 2015
PCT(IPEA): Amended sheet - claims
Oct 8, 2015
Payment of fees and costs
Oct 8, 2015
Reply to International Search Opinion
Jul 7, 2015
Priority document (electronically transmitted)
Jun 18, 2015
Copy of the international search report
Jun 18, 2015
Published international application - A1
May 13, 2015
Notification relating to declaration under Rule 4.17 PCT (copy for ISA/EP)
Jan 23, 2015
Written opinion of the ISA, boxes No. I to VIII
Jan 23, 2015
Written opinion of the ISA, cover sheet
Jan 23, 2015
Written opinion of the ISA, supplemental box
Nov 3, 2014
(Electronic) Receipt
Nov 3, 2014
Abstract
Nov 3, 2014
Claims
Nov 3, 2014
Description
Nov 3, 2014
Drawings
Nov 3, 2014
Incoming communication concerning PCT Direct
Nov 3, 2014
Incoming communication concerning PCT Direct
Nov 3, 2014
Priority document (RO-procedure)

EP3131421

UNILEVER

Application Number: EP14793093A
Filing Date: Nov 3, 2014
Status: Patent Maintained As Amended; Aug 29, 2025
Publication Date: Oct 1, 2025
External Links: Slate, Register , Google Patents

IP Verse

Method For Preparation Of An Oil-In-Water Emulsion

Patent Summary

Patent Family

Patent Oppositions

Dossier Documents

EP3131421