IP Verse

Wound Care System For Negative Pressure Therapy - EP3781223

The patent EP3781223 was granted to Convatec on Jun 11, 2025. The application was originally filed on Oct 18, 2018 under application number EP18786352A. The patent is currently recorded with a legal status of "Patent Maintained As Amended".

EP3781223

CONVATEC

Application Number: EP18786352A
Filing Date: Oct 18, 2018
Status: Patent Maintained As Amended; May 9, 2025
Grant Date: Jun 11, 2025
External Links: Slate, Register, Google Patents

Patent Summary

Patent Family

Patent Oppositions

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	Opposition Status
Get instant alerts for new oppositions and patent status changes
CONVATEC	Apr 27, 2023	D YOUNG	ADMISSIBLE

Patent Citations (19) New

Patent citations refer to prior patents cited during different phases such as opposition or international search.

Citation Phase	Publication Number	Publication Link
DESCRIPTION	CN201325638Y
DESCRIPTION	DE102004002843
DESCRIPTION	EP2822613
DESCRIPTION	WO2016040029
INTERNATIONAL-SEARCH-REPORT	FR1163907
INTERNATIONAL-SEARCH-REPORT	GB2525658
INTERNATIONAL-SEARCH-REPORT	US2010137775
INTERNATIONAL-SEARCH-REPORT	US2012316538
INTERNATIONAL-SEARCH-REPORT	WO2015123340
OPPOSITION	CN201325638Y
OPPOSITION	DE102004002843
OPPOSITION	US2003199828
OPPOSITION	US2009254066
OPPOSITION	US2010137775
OPPOSITION	US2012316538
OPPOSITION	WO2009124125
OPPOSITION	WO2012151359
OPPOSITION	WO2015123340
OPPOSITION	WO2016040029

Download Citation Report

Get a free citation report including examiner, opposition, and international search citations.

Get Citation Report

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

May 15, 2025
Decision to maintain the European patent in amended form
OPPO
May 15, 2025
Decision to maintain the European patent in amended form
OPPO
May 2, 2025
(Electronic) Receipt
OPPO
May 2, 2025
Filing of the translation of the amended claims
OPPO
May 2, 2025
French translation of claims
OPPO
May 2, 2025
German translation of the claims
OPPO
May 2, 2025
Letter accompanying subsequently filed items
OPPO
Feb 6, 2025
Communication to opponent concerning maintenance
OPPO
Feb 6, 2025
Communication with request to file translations
OPPO
Feb 3, 2025
Maintenance of the patent with the documents specified in the final decision
OPPO
Oct 28, 2024
Brief communication - Opposition proceedings
OPPO
Oct 28, 2024
Decision of the Opposition Division and instruction
OPPO
Oct 28, 2024
Druckexemplar in opposition procedure
OPPO
Oct 28, 2024
Grounds for the decision (Annex) - opposition
OPPO
Oct 28, 2024
Interlocutory decision in opposition proceedings
OPPO
Oct 28, 2024
Means of redress
OPPO
Oct 28, 2024
Scanned annex to a communication - opposition procedure
OPPO
Oct 28, 2024
Scanned annex to a communication - opposition procedure
OPPO
Oct 3, 2024
(Electronic) Receipt
OPPO
Oct 3, 2024
Letter accompanying subsequently filed items
OPPO
Oct 3, 2024
Main request during Opposition procedure
OPPO
Oct 3, 2024
Main request during Opposition procedure
OPPO
Oct 3, 2024
Reply to an examination report in opposition proceedings
OPPO
Jul 23, 2024
(Electronic) Receipt
OPPO
Jul 23, 2024
Amended description with annotations
OPPO
Jul 23, 2024
Description
OPPO
Jul 23, 2024
Letter accompanying subsequently filed items
OPPO
Jul 23, 2024
Main request during Opposition procedure
OPPO
Jul 23, 2024
Main request during Opposition procedure
OPPO
Jul 23, 2024
Reply to an examination report in opposition proceedings
OPPO
May 28, 2024
Annex to the communication - opposition
OPPO
May 28, 2024
Brief communication - Opposition proceedings
OPPO
May 28, 2024
Communication inviting the parties to file observations
OPPO
May 10, 2024
Notification concerning the date of oral proceedings
OPPO
May 8, 2024
(Electronic) Receipt
OPPO
May 8, 2024
Communication confirming withdrawal from representation
OPPO
May 8, 2024
Communication of amended entries concerning the representative
OPPO
May 8, 2024
Letter accompanying subsequently filed items
OPPO
May 8, 2024
Letter regarding the opposition procedure (no time limit)
OPPO
May 3, 2024
(Electronic) Receipt
OPPO
May 3, 2024
Letter accompanying subsequently filed items
OPPO
May 3, 2024
Submission concerning change of proprietor's representative
OPPO
Apr 29, 2024
Communication of the registration of a transfer or change of name and/or address
OPPO
Apr 23, 2024
(Electronic) Receipt
OPPO
Apr 23, 2024
Auxiliary request during Opposition procedure
OPPO
Apr 23, 2024
Auxiliary request during Opposition procedure - 01
OPPO
Apr 23, 2024
General enquiry
OPPO
Apr 23, 2024
Letter accompanying subsequently filed items
OPPO
Apr 23, 2024
Main request during Opposition procedure
OPPO
Apr 23, 2024
Main request during Opposition procedure
OPPO
Apr 23, 2024
Submission concerning a transfer of rights (applicant)
OPPO
Mar 13, 2024
Letter accompanying subsequently filed items
Search/Exam
Jan 2, 2024
Advice of delivery
OPPO
Dec 14, 2023
Annex to the communication - opposition
OPPO
Dec 14, 2023
Information concerning oral proceedings
OPPO
Dec 14, 2023
Scanned annex to a communication - opposition procedure
OPPO
Dec 14, 2023
Summons to attend oral proceedings
OPPO
Dec 14, 2023
Summons to attend oral proceedings
OPPO
Dec 14, 2023
Transmittal of decision / summons - opposition
OPPO
Dec 14, 2023
Transmittal of decision / summons - opposition
OPPO
Sep 22, 2023
Brief communication - Opposition proceedings
OPPO
Sep 22, 2023
Rejection of request for extension of time limit
OPPO
Sep 19, 2023
(Electronic) Receipt
OPPO
Sep 19, 2023
Letter accompanying subsequently filed items
OPPO
Sep 19, 2023
Reply of the patent proprietor to the notice(s) of opposition
OPPO
May 16, 2023
Communication of a notice of opposition and request to file observations
OPPO
May 16, 2023
Notice of further oppositions to opponent(s)
OPPO
May 4, 2023
Communication of a notice of opposition - first information to patent proprietor
OPPO
Apr 27, 2023
(Electronic) Receipt
OPPO
Apr 27, 2023
Citation in opposition procedure - 001
OPPO
Apr 27, 2023
Citation in opposition procedure - 002
OPPO
Apr 27, 2023
Citation in opposition procedure - 003
OPPO
Apr 27, 2023
Citation in opposition procedure - 004
OPPO
Apr 27, 2023
Citation in opposition procedure - 005
OPPO
Apr 27, 2023
Citation in opposition procedure - 005
OPPO
Apr 27, 2023
Citation in opposition procedure - 006
OPPO
Apr 27, 2023
Citation in opposition procedure - 007
OPPO
Apr 27, 2023
Citation in opposition procedure - 007
OPPO
Apr 27, 2023
Citation in opposition procedure - 008
OPPO
Apr 27, 2023
Citation in opposition procedure - 009
OPPO
Apr 27, 2023
Citation in opposition procedure - 010
OPPO
Apr 27, 2023
Consolidated list of cited opposition documents
OPPO
Apr 27, 2023
Notice of opposition
OPPO
Apr 27, 2023
Notice of opposition
OPPO
Aug 9, 2022
Transmission of the certificate for a European patent pursuant to Rule 74 EPC
Search/Exam
Jun 30, 2022
Decision to grant a European patent
Search/Exam
Jun 14, 2022
(Electronic) Receipt
Search/Exam
Jun 14, 2022
Filing of the translations of the claims
Search/Exam
Jun 14, 2022
French translation of claims
Search/Exam
Jun 14, 2022
German translation of the claims
Search/Exam
Jun 14, 2022
Letter accompanying subsequently filed items
Search/Exam
Apr 13, 2022
Bibliographic data of the European patent application
Search/Exam
Apr 13, 2022
Communication about intention to grant a European patent
Search/Exam
Apr 13, 2022
Intention to grant (signatures)
Search/Exam
Apr 13, 2022
Text intended for grant (clean copy)
Search/Exam
Apr 13, 2022
Text intended for grant (version for approval)
Search/Exam
Feb 28, 2022
Examination started
Search/Exam
Jul 1, 2021
Claim deemed abandoned
Search/Exam
May 18, 2021
(Electronic) Receipt
Search/Exam
May 18, 2021
Letter accompanying subsequently filed items
Search/Exam
May 18, 2021
Reply to Written Opinion prepared by the EPO
Search/Exam
Jan 27, 2021
Notification on forthcoming publication of bibliographic data
Search/Exam
Nov 27, 2020
Priority document (electronically transmitted)
Search/Exam
Nov 25, 2020
Communication regarding comments on written opinion/amendment of application/payment of claims fee
Search/Exam
Nov 23, 2020
Communication to designated inventor
Search/Exam
Nov 23, 2020
Communication to designated inventor
Search/Exam
Nov 23, 2020
Communication to designated inventor
Search/Exam
Nov 23, 2020
Communication to designated inventor
Search/Exam
Nov 18, 2020
Priority search results copy provided by EPO
Search/Exam
Oct 29, 2020
(Electronic) Receipt
Search/Exam
Oct 29, 2020
Letter concerning fees and payments
Search/Exam
Oct 27, 2020
(Electronic) Receipt
Search/Exam
Oct 27, 2020
Request for entry into the European phase
Search/Exam
Oct 26, 2020
Annexes to the international preliminary examination report
Search/Exam
Oct 26, 2020
Copy of the international preliminary examination report
Search/Exam
Aug 28, 2020
Information on entry into European phase
Search/Exam
Mar 10, 2020
Notification of receipt of demand
PCT2
Mar 4, 2020
Annex to International preliminary examination report
PCT2
Mar 4, 2020
International preliminary examination report
PCT2
Mar 4, 2020
International preliminary examination report - free text sheet
PCT2
Mar 4, 2020
International preliminary examination report - points I-VIII
PCT2
Mar 4, 2020
Transmittal of International Preliminary Examination Report
PCT2
Feb 17, 2020
Notification of election of EPO
Search/Exam
Feb 6, 2020
Amendments of documents (Article 19 PCT) (without attachments)
PCT2
Jan 23, 2020
Notification of receipt of demand
PCT2
Jan 16, 2020
(Electronic) Receipt
PCT2
Jan 16, 2020
PCT demand form
PCT2
Jan 16, 2020
PCT(IPEA): Amended sheet - claims
PCT2
Jan 16, 2020
PCT(IPEA): Amended sheet - claims
PCT2
Jan 16, 2020
PCT(IPEA): Amended sheet - description
PCT2
Jan 16, 2020
PCT(IPEA): Amended sheet - description
PCT2
Jan 16, 2020
Payment of fees and costs
PCT2
Jan 16, 2020
Reply to International Search Opinion
PCT2
Oct 24, 2019
Copy of the international search report
Search/Exam
Oct 24, 2019
Published international application - A1
Search/Exam
Feb 4, 2019
Communication in cases for which no other form is applicable
PCTISA
Feb 4, 2019
ISR: cover sheet
PCTISA
Jan 29, 2019
ISR: cited documents
PCTISA
Jan 28, 2019
Written opinion of the ISA, boxes No. I to VIII
PCTISA
Jan 28, 2019
Written opinion of the ISA, cover sheet
PCTISA
Jan 28, 2019
Written opinion of the ISA, supplemental box
PCTISA
Jan 9, 2019
(Electronic) Receipt
PCTRO
Jan 9, 2019
Incoming letter related to PCT RO
PCTRO
Jan 9, 2019
Incoming letter related to PCT RO
PCTRO
Jan 9, 2019
Substitute sheet (R26) - Description
PCTRO
Dec 13, 2018
(Electronic) Receipt
PCTRO
Dec 13, 2018
Incoming letter related to PCT RO
PCTRO
Dec 13, 2018
Incoming letter related to PCT RO
PCTRO
Dec 13, 2018
Substitute sheet (R26) - Drawings
PCTRO
Dec 6, 2018
Notification relating to priority claim
PCTRO
Dec 6, 2018
Notification relating to priority claim
PCTISA
Nov 16, 2018
Invitation to correct priority claim
PCTRO
Oct 30, 2018
Notification of receipt of Search copy
PCTISA
Oct 29, 2018
Invitation to correct defects in the international application
PCTRO
Oct 29, 2018
Notification of the international application number and of the international filing date
PCTRO
Oct 24, 2018
Request form for international application (copy for ISA/EP)
PCTISA
Oct 18, 2018
(Electronic) Receipt
PCTRO
Oct 18, 2018
Abstract
PCTRO
Oct 18, 2018
Claims
PCTRO
Oct 18, 2018
Description
PCTRO
Oct 18, 2018
Document concerning fees and payments
PCTRO
Oct 18, 2018
Drawings
PCTRO
Oct 18, 2018
Electronic request for grant of an International application
PCTRO