Antibacterial Wound Dressing

Patent No. EP2262545 (titled "Antibacterial Wound Dressing") was filed by Convatec on Mar 18, 2009. The application was issued on Jul 16, 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
KCI MANUFACTURING UNLIMITED	Jul 9, 2020	SIMMONS & SIMMONS

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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Jun 20, 2025
Decision to maintain the European patent in amended form
Jun 20, 2025
Decision to maintain the European patent in amended form
Jun 10, 2025
(Electronic) Receipt
Jun 10, 2025
Filing of the translation of the amended claims
Jun 10, 2025
French translation of claims
Jun 10, 2025
German translation of the claims
Jun 10, 2025
Letter accompanying subsequently filed items
Mar 18, 2025
Communication of bibliographic data
Mar 18, 2025
Communication to opponent concerning maintenance
Mar 18, 2025
Communication with request to file translations
Mar 11, 2025
Maintenance of the patent with the documents specified in the final decision
Mar 3, 2025
Refund of fees
Feb 27, 2025
F3324 Closure of the appeal proceedings: withdrawal of the appeal/ application/ opposition
Feb 27, 2025
F3324 Closure of the appeal proceedings: withdrawal of the appeal/ application/ opposition
Feb 27, 2025
F3324 Closure of the appeal proceedings: withdrawal of the appeal/ application/ opposition
Feb 24, 2025
F3014 Oral Proceedings: Order cancelling/postponing
Feb 24, 2025
F3017 Oral Proceedings: Notification of cancellation/postponing
Feb 24, 2025
F3017 Oral Proceedings: Notification of cancellation/postponing
Feb 24, 2025
F3345 Forwarding of submissions to parties
Feb 21, 2025
(Electronic) Receipt
Feb 21, 2025
F3345 Forwarding of submissions to parties
Feb 21, 2025
Letter accompanying subsequently filed items
Feb 20, 2025
(Electronic) Receipt
Feb 20, 2025
Letter accompanying subsequently filed items
Feb 20, 2025
Withdrawal of an appeal
Feb 20, 2025
Withdrawal of an appeal
Jan 20, 2025
F3305 Communication of the Board of Appeal (ex parte/ inter partes)
Jan 20, 2025
F3305 Communication of the Board of Appeal (ex parte/ inter partes)
Jan 8, 2025
(Electronic) Receipt
Jan 8, 2025
Letter accompanying subsequently filed items
Jan 8, 2025
Oral proceedings: change of venue
Jan 8, 2025
Oral proceedings: change of venue
Dec 23, 2024
F3345 Forwarding of submissions to parties
Dec 20, 2024
(Electronic) Receipt
Dec 20, 2024
Letter accompanying subsequently filed items
Dec 20, 2024
Letter dealing with oral proceedings during the appeal procedure
Dec 2, 2024
F3305 Communication of the Board of Appeal (ex parte/ inter partes)
Dec 2, 2024
F3305 Communication of the Board of Appeal (ex parte/ inter partes)
Oct 30, 2024
F3345 Forwarding of submissions to parties
Oct 24, 2024
(Electronic) Receipt
Oct 24, 2024
Annexes (other than cited documents) regarding appeal procedure
Oct 24, 2024
Annexes (other than cited documents) regarding appeal procedure
Oct 24, 2024
Annexes (other than cited documents) regarding appeal procedure
Oct 24, 2024
Annexes (other than cited documents) regarding appeal procedure
Oct 24, 2024
Annexes (other than cited documents) regarding appeal procedure
Oct 24, 2024
Letter accompanying subsequently filed items
Oct 24, 2024
Letter dealing with oral proceedings during the appeal procedure
Oct 1, 2024
F3011.1 Oral Proceedings: summons
Oct 1, 2024
F3011.1 Oral Proceedings: summons
Sep 26, 2024
F3010 Oral proceedings: order for summons
Mar 13, 2024
Letter accompanying subsequently filed items
Jan 4, 2024
Composition of the board (T)
Mar 9, 2023
F3345 Forwarding of submissions to parties
Mar 3, 2023
(Electronic) Receipt
Mar 3, 2023
Letter accompanying subsequently filed items
Mar 3, 2023
Letter relating to Appeal Procedure
Nov 4, 2022
F3345 Forwarding of submissions to parties
Oct 31, 2022
(Electronic) Receipt
Oct 31, 2022
Letter accompanying subsequently filed items
Oct 31, 2022
Reply to appeal
Oct 31, 2022
Reply to appeal
Jun 30, 2022
F3344 Setting time limit for reply/ file observations to appeal (inter partes)
Jun 24, 2022
(Electronic) Receipt
Jun 24, 2022
Amended claims with annotations
Jun 24, 2022
Amended claims with annotations
Jun 24, 2022
Amended claims with annotations
Jun 24, 2022
Amended claims with annotations
Jun 24, 2022
Amended claims with annotations
Jun 24, 2022
Amended claims with annotations
Jun 24, 2022
Auxiliary request during appeals procedure - 01
Jun 24, 2022
Auxiliary request during appeals procedure - 02
Jun 24, 2022
Auxiliary request during appeals procedure - 03
Jun 24, 2022
Auxiliary request during appeals procedure - 04
Jun 24, 2022
Auxiliary request during appeals procedure - 05
Jun 24, 2022
Citation in appeal procedure - 012
Jun 24, 2022
Citation in appeal procedure - 013
Jun 24, 2022
Citation in appeal procedure - 014
Jun 24, 2022
Claims
Jun 24, 2022
Letter accompanying subsequently filed items
Jun 24, 2022
Statement of grounds of appeal
May 2, 2022
F3204 Communication of the file number to the parties
May 2, 2022
F3204 Communication of the file number to the parties
Apr 25, 2022
(Electronic) Receipt
Apr 25, 2022
Letter accompanying subsequently filed items
Apr 25, 2022
Letter accompanying subsequently filed items
Apr 25, 2022
Notice of appeal
Feb 15, 2022
Advice of delivery
Feb 15, 2022
Annex to the communication - opposition
Feb 15, 2022
Cover sheet for fax transmission
Feb 15, 2022
Decision of the Opposition Division and instruction
Feb 15, 2022
Druckexemplar in opposition procedure
Feb 15, 2022
Grounds for the decision (Annex) - opposition
Feb 15, 2022
Interlocutory decision in opposition proceedings
Feb 15, 2022
Interlocutory decision in opposition proceedings
Feb 15, 2022
Means of redress
Feb 15, 2022
Minutes of the oral proceedings (Opposition Division) - conclusion of the proceedings
Feb 15, 2022
Minutes of the oral proceedings (Opposition Division) - conclusion of the proceedings
Feb 15, 2022
Minutes of the oral proceedings (Opposition Division) - introduction of the parties
Feb 15, 2022
Provision of a copy of the minutes - opposition procedure
Feb 15, 2022
Provision of a copy of the minutes - opposition procedure
Feb 15, 2022
Scanned annex to a communication - opposition procedure
Feb 15, 2022
Scanned annex to a communication - opposition procedure
Feb 15, 2022
Transmittal of decision / summons - opposition
Feb 15, 2022
Transmittal of decision / summons - opposition
Jan 19, 2022
Information about the result of oral proceedings
Dec 9, 2021
Brief communication - Opposition proceedings
Dec 3, 2021
(Electronic) Receipt
Dec 3, 2021
Citation in opposition procedure - 012
Dec 3, 2021
Consolidated list of cited opposition documents
Dec 3, 2021
Letter accompanying subsequently filed items
Dec 3, 2021
Written submission in preparation to/during oral proceedings
Nov 25, 2021
Brief communication - Opposition proceedings
Nov 24, 2021
Brief communication - Opposition proceedings
Nov 19, 2021
(Electronic) Receipt
Nov 19, 2021
Letter accompanying subsequently filed items
Nov 19, 2021
Written submission in preparation to/during oral proceedings
Nov 18, 2021
(Electronic) Receipt
Nov 18, 2021
(Electronic) Receipt
Nov 18, 2021
Auxiliary request during Opposition procedure
Nov 18, 2021
Auxiliary request during Opposition procedure
Nov 18, 2021
Auxiliary request during Opposition procedure
Nov 18, 2021
Auxiliary request during Opposition procedure
Nov 18, 2021
Auxiliary request during Opposition procedure
Nov 18, 2021
Auxiliary request during Opposition procedure
Nov 18, 2021
Auxiliary request during Opposition procedure
Nov 18, 2021
Auxiliary request during Opposition procedure
Nov 18, 2021
Auxiliary request during Opposition procedure
Nov 18, 2021
Auxiliary request during Opposition procedure - 01
Nov 18, 2021
Auxiliary request during Opposition procedure - 02
Nov 18, 2021
Auxiliary request during Opposition procedure - 03
Nov 18, 2021
Auxiliary request during Opposition procedure - 04
Nov 18, 2021
Auxiliary request during Opposition procedure - 05
Nov 18, 2021
Auxiliary request during Opposition procedure - 06
Nov 18, 2021
Auxiliary request during Opposition procedure - 07
Nov 18, 2021
Auxiliary request during Opposition procedure - 08
Nov 18, 2021
Auxiliary request during Opposition procedure - 09
Nov 18, 2021
Citation in opposition procedure - 010
Nov 18, 2021
Citation in opposition procedure - 010
Nov 18, 2021
Citation in opposition procedure - 011
Nov 18, 2021
Letter accompanying subsequently filed items
Nov 18, 2021
Letter accompanying subsequently filed items
Nov 18, 2021
Written submission in preparation to/during oral proceedings
Nov 18, 2021
Written submission in preparation to/during oral proceedings
Oct 20, 2021
(Electronic) Receipt
Sep 23, 2021
Notification concerning the date of oral proceedings
Sep 23, 2021
Notification concerning the date of oral proceedings
Sep 17, 2021
(Electronic) Receipt
Sep 17, 2021
Request for interpreters during oral proceedings
Jul 12, 2021
Advice of delivery
Jul 12, 2021
Cover sheet for fax transmission
Jul 9, 2021
(Electronic) Receipt
Jul 9, 2021
Advice of delivery
Jul 9, 2021
Letter accompanying subsequently filed items
Jul 2, 2021
Information concerning oral proceedings
Jul 2, 2021
Summons to attend oral proceedings
Jul 2, 2021
Summons to attend oral proceedings
Jul 2, 2021
Transmittal of decision / summons - opposition
Jul 2, 2021
Transmittal of decision / summons - opposition
Apr 22, 2021
Brief communication - Opposition proceedings
Apr 13, 2021
(Electronic) Receipt
Apr 13, 2021
Any annexes (other than citation) to an opposition letter
Apr 13, 2021
Letter accompanying subsequently filed items
Apr 13, 2021
Oral proceedings: Request for postponement
Apr 12, 2021
(Electronic) Receipt
Apr 12, 2021
Advice of delivery
Apr 12, 2021
Letter accompanying subsequently filed items
Apr 1, 2021
Advice of delivery
Mar 31, 2021
Annex to the communication - opposition
Mar 31, 2021
Information concerning oral proceedings
Mar 31, 2021
Summons to attend oral proceedings
Mar 31, 2021
Summons to attend oral proceedings
Mar 31, 2021
Transmittal of decision / summons - opposition
Mar 31, 2021
Transmittal of decision / summons - opposition
Dec 10, 2020
Brief communication - Opposition proceedings
Dec 3, 2020
(Electronic) Receipt
Dec 3, 2020
Citation in opposition procedure - 008
Dec 3, 2020
Citation in opposition procedure - 009
Dec 3, 2020
Letter accompanying subsequently filed items
Dec 3, 2020
Reply of the patent proprietor to the notice(s) of opposition
Aug 11, 2020
Brief communication - Opposition proceedings
Aug 11, 2020
Communication confirming withdrawal from representation
Aug 11, 2020
Communication of amended entries concerning the representative
Aug 5, 2020
(Electronic) Receipt
Aug 5, 2020
Letter accompanying subsequently filed items
Aug 5, 2020
Submission concerning change of proprietor's representative
Jul 27, 2020
Communication of a notice of opposition and request to file observations
Jul 27, 2020
Notice of further oppositions to opponent(s)
Jul 14, 2020
Communication of a notice of opposition - first information to patent proprietor
Jul 9, 2020
(Electronic) Receipt
Jul 9, 2020
Citation in opposition procedure - 001
Jul 9, 2020
Citation in opposition procedure - 002
Jul 9, 2020
Citation in opposition procedure - 003
Jul 9, 2020
Citation in opposition procedure - 004
Jul 9, 2020
Citation in opposition procedure - 005
Jul 9, 2020
Citation in opposition procedure - 006
Jul 9, 2020
Citation in opposition procedure - 007
Jul 9, 2020
Notice of opposition
Jul 9, 2020
Notice of opposition
Nov 18, 2019
Communication of amended entries concerning the representative
Oct 21, 2019
Transmission of the certificate for a European patent pursuant to Rule 74 EPC
Sep 12, 2019
Decision to grant a European patent
Aug 29, 2019
(Electronic) Receipt
Aug 29, 2019
Filing of the translations of the claims
Aug 29, 2019
French translation of claims
Aug 29, 2019
German translation of the claims
Aug 29, 2019
Letter accompanying subsequently filed items
Apr 25, 2019
Bibliographic data of the European patent application
Apr 25, 2019
Communication about intention to grant a European patent
Apr 25, 2019
Intention to grant (signatures)
Apr 25, 2019
Text intended for grant (clean copy)
Apr 25, 2019
Text intended for grant (version for approval)
Apr 3, 2019
(Electronic) Receipt
Apr 3, 2019
Amended claims with annotations
Apr 3, 2019
Claims
Apr 3, 2019
Letter accompanying subsequently filed items
Apr 3, 2019
Request for correction/amendment of the text proposed for grant sent from 01.04.2012
Dec 7, 2018
Bibliographic data of the European patent application
Dec 7, 2018
Communication about intention to grant a European patent
Dec 7, 2018
Intention to grant (signatures)
Dec 7, 2018
Text intended for grant (clean copy)
Dec 7, 2018
Text intended for grant (version for approval)
Nov 29, 2018
Decision to allow further processing
Nov 14, 2018
(Electronic) Receipt
Nov 14, 2018
Description
Nov 14, 2018
Letter accompanying subsequently filed items
Nov 14, 2018
Request for further processing
Sep 17, 2018
Application deemed to be withdrawn ( translations of claims/payment missing)
Mar 26, 2018
Bibliographic data of the European patent application
Mar 26, 2018
Communication about intention to grant a European patent
Mar 26, 2018
Intention to grant (signatures)
Mar 26, 2018
Text intended for grant (clean copy)
Mar 26, 2018
Text intended for grant (version for approval)
Sep 15, 2017
Decision to allow further processing
Aug 29, 2017
(Electronic) Receipt
Aug 29, 2017
Amended claims with annotations
Aug 29, 2017
Claims
Aug 29, 2017
Letter accompanying subsequently filed items
Aug 29, 2017
Request for further processing
Jun 20, 2017
Application deemed to be withdrawn (no reply to communication from the Examining Division)
Mar 23, 2017
Grant of extension of time limit (examination procedure)
Mar 16, 2017
(Electronic) Receipt
Mar 16, 2017
Letter accompanying subsequently filed items
Mar 16, 2017
Request for extension of time limit to communication from the Examining Division
Nov 11, 2016
Annex to the communication
Nov 11, 2016
Communication from the Examining Division
Nov 7, 2016
Examination started
Aug 2, 2016
Miscellaneous requests concerning client data
Jul 5, 2016
Notification regarding date of start of examination with possibility to withdraw
Mar 26, 2012
Communication of amended entries concerning the representative
Mar 16, 2012
Submission concerning change of applicant's representative
Mar 14, 2012
Submission concerning change of applicant's representative
Apr 18, 2011
Annexes in respect of a client data request
Apr 13, 2011
Annexes in respect of a client data request
Apr 1, 2011
Decision to allow further processing
Mar 21, 2011
(Electronic) Receipt
Mar 21, 2011
Amended claims filed after receipt of (European) search report
Mar 21, 2011
Amended claims with annotations
Mar 21, 2011
Amendments received before examination
Mar 21, 2011
Letter accompanying subsequently filed items
Mar 21, 2011
Request for further processing
Jan 11, 2011
Application deemed to be withdrawn (non-reply to Written Opinion)
Nov 24, 2010
Notification on forthcoming publication of bibliographic data
Oct 26, 2010
Communication concerning correction of deficiences in Written Opinion/amendment of application/payment of claims fee
Oct 6, 2010
(Electronic) Receipt
Oct 6, 2010
Notification of the recording of a change
Oct 6, 2010
Request for entry into the European phase
Oct 5, 2010
Copy of the international preliminary report on patentability
Jul 28, 2010
Information on entry into European phase
Jun 29, 2010
Reminder for payment period (examination fee/designation fees)
Jun 24, 2010
Copy of the international search report
Jun 24, 2010
International publication of the international search report
Apr 26, 2010
Written opinion of the ISA, boxes No. I to VIII
Apr 26, 2010
Written opinion of the ISA, cover sheet
Apr 26, 2010
Written opinion of the ISA, supplemental box
Mar 3, 2010
Notification of the recording of a change
Mar 3, 2010
Notification of the recording of a change
Oct 15, 2009
Priority document (electronically transmitted)
Sep 24, 2009
Published international application - A2
Mar 26, 2009
Abstract
Mar 26, 2009
Claims
Mar 26, 2009
Description
Mar 26, 2009
Drawings
Mar 26, 2009
Submission concerning representation

EP2262545

CONVATEC

Application Number: EP09723083A
Filing Date: Mar 18, 2009
Status: Patent Maintained As Amended; Jun 13, 2025
Publication Date: Jul 16, 2025
External Links: Slate, Register , Google Patents

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Antibacterial Wound Dressing

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Dossier Documents

EP2262545