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The patent EP4223265 was granted to Smith & Nephew on Aug 28, 2024. The application was filed on Apr 21, 2011 under application number EP23161450A. The patent is currently recorded with a legal status of "Granted And Under Opposition".

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 |
|---|---|---|---|
| CONVATEC | May 28, 2025 | D YOUNG | ADMISSIBLE |
| MOLNLYCKE HEALTH CARE | May 21, 2025 | WALLINGER RICKER SCHLOTTER TOSTMANN | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| OPPOSITION | EP0091800 |
| OPPOSITION | EP0122042 |
| OPPOSITION | EP0999858 |
| OPPOSITION | GB2307180 |
| OPPOSITION | US2002087136 |
| OPPOSITION | US2007255194 |
| OPPOSITION | US2008009812 |
| OPPOSITION | US2008119802 |
| OPPOSITION | US2009234307 |
| OPPOSITION | WO2007085396 |
| OPPOSITION | WO2007113597 |
| OPPOSITION | WO2007133618 |
| OPPOSITION | WO2009066105 |
| OPPOSITION | WO2009066106 |
| OPPOSITION | WO2009111657 |
| OPPOSITION | WO2009145703 |
| OPPOSITION | WO2009145894 |
| OPPOSITION | WO2009146441 |
| OPPOSITION | WO2010033574 |
| OPPOSITION | WO2011135284 |
| SEARCH | US6071267 |
| SEARCH | WO03045492 |
| SEARCH | WO2007133618 |
| SEARCH | WO2008091251 |
| SEARCH | WO2009066105 |
| SEARCH | WO2009066106 |
| SEARCH | WO2009111657 |
| SEARCH | WO2009114790 |
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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Authorisation
OPPO
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May 13, 2025
Letter accompanying subsequently filed items
Search/Exam
May 13, 2025
Matter concerning the application
Search/Exam
Jan 17, 2025
Jan 14, 2025
(Electronic) Receipt
Search/Exam
Jan 14, 2025
Sep 10, 2024
Aug 1, 2024
Decision to grant a European patent
Search/Exam
Jul 16, 2024
(Electronic) Receipt
Search/Exam
Jul 16, 2024
Annex
Search/Exam
Jul 16, 2024
French translation of claims
Search/Exam
Jul 16, 2024
German translation of the claims
Search/Exam
Jul 16, 2024
Letter accompanying subsequently filed items
Search/Exam
Jun 4, 2024
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May 30, 2024
(Electronic) Receipt
Search/Exam
May 30, 2024
Letter accompanying subsequently filed items
Search/Exam
May 30, 2024
Mar 25, 2024
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Mar 25, 2024
Intention to grant (signatures)
Search/Exam
Mar 25, 2024
Text intended for grant (clean copy)
Search/Exam
Mar 25, 2024
Mar 12, 2024
Examination started
Search/Exam
Jan 26, 2024
(Electronic) Receipt
Search/Exam
Jan 26, 2024
Jan 26, 2024
Amended claims with annotations
Search/Exam
Jan 26, 2024
Jan 26, 2024
Amendments received before examination
Search/Exam
Jan 26, 2024
Letter accompanying subsequently filed items
Search/Exam
Nov 3, 2023
Nov 3, 2023
Oct 27, 2023
(Electronic) Receipt
Search/Exam
Oct 27, 2023
Letter accompanying subsequently filed items
Search/Exam
Oct 27, 2023
Aug 14, 2023
Jul 12, 2023
Notification of forthcoming publication
Search/Exam
Jul 11, 2023
Refund of fees
Search/Exam
Jul 6, 2023
Jul 6, 2023
European search opinion
Search/Exam
Jul 6, 2023
European search report
Search/Exam
Jul 6, 2023
Information on Search Strategy
Search/Exam
Jun 29, 2023
Modified abstract
Search/Exam
Mar 13, 2023
Abstract
Search/Exam
Mar 13, 2023
Mar 13, 2023
Claims
Search/Exam
Mar 13, 2023
Description
Search/Exam
Mar 13, 2023
Designation of inventor
Search/Exam
Mar 13, 2023
Drawings
Search/Exam
Mar 13, 2023
Matter concerning the application
Search/Exam
Mar 13, 2023
Request for grant of a European patent
Search/Exam
Nov 22, 2011