An Ostomy Pouch

Patent No. EP4157165 (titled "An Ostomy Pouch") was filed by Convatec on Jun 1, 2021. The application was issued on Aug 9, 2023.

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
SALTS HEALTHCARE	May 8, 2024	FORRESTERS

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

Dec 12, 2025
Annex to the communication - opposition
Dec 12, 2025
Brief communication - Opposition proceedings
Dec 12, 2025
Brief communication - Opposition proceedings
Dec 12, 2025
Decision of the Opposition Division and instruction
Dec 12, 2025
Druckexemplar in opposition procedure
Dec 12, 2025
Grounds for the decision (Annex) - opposition
Dec 12, 2025
Interlocutory decision in opposition proceedings
Dec 12, 2025
Interlocutory decision in opposition proceedings
Dec 12, 2025
Means of redress
Dec 12, 2025
Minutes of the oral proceedings (Opposition Division) - conclusion of the proceedings
Dec 12, 2025
Minutes of the oral proceedings (Opposition Division) - introduction of the parties
Dec 12, 2025
Provision of a copy of the minutes - opposition procedure
Dec 12, 2025
Provision of a copy of the minutes - opposition procedure
Dec 12, 2025
Scanned annex to a communication - opposition procedure
Dec 12, 2025
Scanned annex to a communication - opposition procedure
Dec 12, 2025
Scanned annex to a communication - opposition procedure
Dec 12, 2025
Scanned annex to a communication - opposition procedure
Nov 18, 2025
Information about the result of oral proceedings
Nov 11, 2025
Brief communication - Opposition proceedings
Nov 10, 2025
(Electronic) Receipt
Nov 10, 2025
Brief communication - Opposition proceedings
Nov 10, 2025
Letter accompanying subsequently filed items
Nov 10, 2025
Written submission in preparation to/during oral proceedings
Sep 23, 2025
Brief communication - Opposition proceedings
Sep 23, 2025
Brief communication - Opposition proceedings
Sep 18, 2025
(Electronic) Receipt
Sep 18, 2025
(Electronic) Receipt
Sep 18, 2025
Auxiliary request during Opposition procedure
Sep 18, 2025
Auxiliary request during Opposition procedure
Sep 18, 2025
Auxiliary request during Opposition procedure
Sep 18, 2025
Auxiliary request during Opposition procedure
Sep 18, 2025
Auxiliary request during Opposition procedure
Sep 18, 2025
Auxiliary request during Opposition procedure - 01
Sep 18, 2025
Auxiliary request during Opposition procedure - 02
Sep 18, 2025
Auxiliary request during Opposition procedure - 03
Sep 18, 2025
Auxiliary request during Opposition procedure - 04
Sep 18, 2025
Auxiliary request during Opposition procedure - 05
Sep 18, 2025
Letter accompanying subsequently filed items
Sep 18, 2025
Letter accompanying subsequently filed items
Sep 18, 2025
Written submission in preparation to/during oral proceedings
Sep 18, 2025
Written submission in preparation to/during oral proceedings
Sep 9, 2025
Brief communication - Opposition proceedings
Sep 9, 2025
Brief communication - Opposition proceedings
Sep 8, 2025
Brief communication - Opposition proceedings
Sep 8, 2025
Brief communication - Opposition proceedings
Jan 3, 2025
Annex to the communication - opposition
Jan 3, 2025
Information concerning oral proceedings
Jan 3, 2025
Scanned annex to a communication - opposition procedure
Jan 3, 2025
Summons to attend oral proceedings
Jan 3, 2025
Summons to attend oral proceedings
Oct 15, 2024
Brief communication - Opposition proceedings
Sep 26, 2024
Brief communication - Opposition proceedings
Sep 23, 2024
(Electronic) Receipt
Sep 23, 2024
Auxiliary request during Opposition procedure
Sep 23, 2024
Auxiliary request during Opposition procedure
Sep 23, 2024
Auxiliary request during Opposition procedure - 01
Sep 23, 2024
Auxiliary request during Opposition procedure - 02
Sep 23, 2024
Citation in opposition procedure - 010
Sep 23, 2024
Consolidated list of cited opposition documents
Sep 23, 2024
Letter accompanying subsequently filed items
Sep 23, 2024
Reply of the patent proprietor to the notice(s) of opposition
Jul 15, 2024
Brief communication - Opposition proceedings
Jul 15, 2024
Communication confirming withdrawal from representation
Jul 15, 2024
Communication of amended entries concerning the representative
Jul 12, 2024
(Electronic) Receipt
Jul 12, 2024
Letter accompanying subsequently filed items
Jul 12, 2024
Letter regarding the opposition procedure (no time limit)
Jul 12, 2024
Letter regarding the opposition procedure (no time limit)
Jul 12, 2024
Letter regarding the opposition procedure (no time limit)
Jul 12, 2024
Non-scannable object
Jul 9, 2024
(Electronic) Receipt
Jul 9, 2024
Letter accompanying subsequently filed items
Jul 9, 2024
Submission concerning change of proprietor's representative
Jun 13, 2024
(Electronic) Receipt
Jun 13, 2024
Letter accompanying subsequently filed items
Jun 13, 2024
Submission concerning change of applicant's representative
Jun 12, 2024
(Electronic) Receipt
Jun 12, 2024
Letter accompanying subsequently filed items
Jun 12, 2024
Submission concerning change of applicant's representative
May 23, 2024
Communication of a notice of opposition and request to file observations
May 23, 2024
Notice of further oppositions to opponent(s)
May 15, 2024
Communication of a notice of opposition - first information to patent proprietor
May 15, 2024
Request for documents
May 8, 2024
(Electronic) Receipt
May 8, 2024
Citation in opposition procedure - 001
May 8, 2024
Citation in opposition procedure - 002
May 8, 2024
Citation in opposition procedure - 003
May 8, 2024
Citation in opposition procedure - 004
May 8, 2024
Citation in opposition procedure - 006
May 8, 2024
Citation in opposition procedure - 007
May 8, 2024
Citation in opposition procedure - 008
May 8, 2024
Citation in opposition procedure - 009
May 8, 2024
Notice of opposition
May 8, 2024
Notice of opposition
May 8, 2024
Notice of opposition
Aug 22, 2023
Transmission of the certificate for a European patent pursuant to Rule 74 EPC
Jul 13, 2023
Decision to grant a European patent
Jul 3, 2023
(Electronic) Receipt
Jul 3, 2023
Filing of the translations of the claims
Jul 3, 2023
French translation of claims
Jul 3, 2023
German translation of the claims
Jul 3, 2023
Letter accompanying subsequently filed items
Mar 9, 2023
Notification on forthcoming publication of bibliographic data
Feb 23, 2023
Annex to the communication about intention to grant a European patent
Feb 23, 2023
Bibliographic data of the European patent application
Feb 23, 2023
Communication about intention to grant a European patent
Feb 23, 2023
Intention to grant (signatures)
Feb 23, 2023
Text intended for grant (clean copy)
Feb 23, 2023
Text intended for grant (version for approval)
Feb 14, 2023
Bibliographic data of the European patent application
Feb 6, 2023
Examination started
Jan 16, 2023
Notice on debiting of fees
Jan 2, 2023
(Electronic) Receipt
Jan 2, 2023
Amended claims filed after receipt of (European) search report
Jan 2, 2023
Amended claims with annotations
Jan 2, 2023
Amended description filed after receipt of (European) search report
Jan 2, 2023
Amended description with annotations
Jan 2, 2023
Amendments received before examination
Jan 2, 2023
Request for entry into the European phase
Dec 12, 2022
Annexes to the international preliminary examination report
Dec 12, 2022
Copy of the international preliminary examination report
Oct 13, 2022
Information on entry into European phase
Aug 17, 2022
Annex to International preliminary examination report
Aug 17, 2022
International preliminary examination report
Aug 17, 2022
International preliminary examination report - free text sheet
Aug 17, 2022
International preliminary examination report - points I-VIII
Aug 17, 2022
Transmittal of International Preliminary Examination Report
Jul 11, 2022
(Electronic) Receipt
Jul 11, 2022
Letter regarding PCTII procedure
Jul 11, 2022
PCT(IPEA): Amended sheet - claims
Jul 11, 2022
PCT(IPEA): Amended sheet - claims
Jul 11, 2022
Reply to communication PCT/IPEA/408
May 11, 2022
Written opinion
May 11, 2022
Written opinion - free text sheet
May 11, 2022
Written opinion - points I-VIII
Apr 28, 2022
Notification of election of EPO
Apr 14, 2022
Amendments of documents (Article 19 PCT) (without attachments)
Apr 8, 2022
Notification of receipt of demand
Apr 4, 2022
(Electronic) Receipt
Apr 4, 2022
PCT demand form
Apr 4, 2022
Payment of fees and costs
Apr 4, 2022
Reply to International Search Opinion
Jan 3, 2022
Priority document (electronically transmitted)
Dec 9, 2021
Copy of the international search report
Dec 9, 2021
Published international application - A1
Sep 23, 2021
ISR: cited documents
Sep 23, 2021
Written opinion of the ISA, boxes No. I to VIII
Sep 23, 2021
Written opinion of the ISA, cover sheet
Sep 23, 2021
Written opinion of the ISA, supplemental box
Jul 8, 2021
Notification of receipt of Search copy
Jun 15, 2021
Abstract
Jun 15, 2021
Claims
Jun 15, 2021
Description
Jun 15, 2021
Drawings
Jun 15, 2021
Request form for international application (copy for ISA/EP)

EP4157165

CONVATEC

Application Number: EP21734458A
Filing Date: Jun 1, 2021
Status: Granted And Under Opposition; Jul 7, 2023
Publication Date: Aug 9, 2023
External Links: Slate, Register , Google Patents

IP Verse

An Ostomy Pouch

Patent Summary

Patent Family

Patent Oppositions

Dossier Documents

EP4157165