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The patent EP3445282 was granted to W L Gore & Associates on Jun 28, 2023. The application was filed on Apr 21, 2016 under application number EP16899644A. The patent is currently recorded with a legal status of "Granted And Under Opposition".
A diametrically adjustable endoprosthesis for treating conditions such as portal hypertension, comprising a self-expanding stent-graft and a controlled expansion element that constrains the stent-graft's expansion. The controlled expansion element can be adjusted to a desired diameter, and once set, maintains that diameter under physiological conditions. The endoprosthesis can be deployed in a constrained state and then expanded to a larger diameter, with the controlled expansion element limiting further expansion. The device enables dynamic adjustment of the endoprosthesis diameter to achieve optimal fluid flow and pressure management.

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 |
|---|---|---|---|
| BAUER WAGNER PELLENGAHR SROKA PATENT UND RECHTSANWALTS PARTGMBB | Mar 28, 2024 | BAUER PSU | ADMISSIBLE |
| BAUER WAGNER PELLENGAHR SROKA PATENT UND RECHTSANWALTS PARTGMBB | Mar 28, 2024 | BAUER WAGNER PELLENGAHR SROKA | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| INTERNATIONAL-SEARCH-REPORT | US2013131780 |
| INTERNATIONAL-SEARCH-REPORT | US2013297003 |
| INTERNATIONAL-SEARCH-REPORT | US2015313871 |
| INTERNATIONAL-SEARCH-REPORT | US2016015422 |
| INTERNATIONAL-SEARCH-REPORT | US6217609 |
| INTERNATIONAL-SEARCH-REPORT | US6336937 |
| INTERNATIONAL-SEARCH-REPORT | WO0047271 |
| OPPOSITION | DE3918736 |
| OPPOSITION | US10610395 |
| OPPOSITION | US2001053929 |
| OPPOSITION | US2002198588 |
| OPPOSITION | US2006015171 |
| OPPOSITION | US2013204347 |
| OPPOSITION | US2015005870 |
| OPPOSITION | US2017014228 |
| OPPOSITION | US3962153 |
| OPPOSITION | US4096227 |
| OPPOSITION | US4187390 |
| OPPOSITION | US4902423 |
| OPPOSITION | US6217609 |
| OPPOSITION | US6361637 |
| OPPOSITION | US6890350 |
| OPPOSITION | WO0124733 |
| OTHER | US2001053929 |
| SEARCH | US2001053929 |
| SEARCH | US2002198588 |
| SEARCH | US2006015171 |
| SEARCH | US2015005870 |
| SEARCH | US6890350 |
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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Decision to grant a European patent
Search/Exam
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(Electronic) Receipt
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May 16, 2023
Filing of the translations of the claims
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May 16, 2023
French translation of claims
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May 16, 2023
German translation of the claims
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May 16, 2023
Letter accompanying subsequently filed items
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May 9, 2023
Change to the inventor details
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(Electronic) Receipt
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Letter accompanying subsequently filed items
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Letter concerning the inventor
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Intention to grant (signatures)
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(Electronic) Receipt
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Amended claims with annotations
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Claims
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Letter accompanying subsequently filed items
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Intention to grant (signatures)
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Text intended for grant (clean copy)
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(Electronic) Receipt
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Letter accompanying subsequently filed items
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Observations by third parties
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Patent document filed by a Third party
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Examination started
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Document concerning representation
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Letter accompanying subsequently filed items
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(Electronic) Receipt
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Amended claims with annotations
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Letter accompanying subsequently filed items
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European search opinion
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Oct 30, 2019
Information on Search Strategy
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Oct 30, 2019
Supplementary European search report
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Search started
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Communication to designated inventor
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Communication to designated inventor
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Communication to designated inventor
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Communication to designated inventor
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Communication to designated inventor
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(Electronic) Receipt
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Amended claims with annotations
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Nov 13, 2018
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Request for entry into the European phase
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Nov 7, 2018
Aug 31, 2018
Information on entry into European phase
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Oct 26, 2017
Copy of the international search report
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Oct 26, 2017
Published international application - A1
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