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The patent EP3225233 was granted to Wyeth on Aug 14, 2019. The application was filed on Oct 27, 2006 under application number EP17166616A. The patent is currently recorded with a legal status of "Revoked".

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 |
|---|---|---|---|
| BIOVERATIV THERAPEUTICS | May 14, 2020 | ZWICKER | - |
| SWEDISH ORPHAN BIOVITRUM | May 14, 2020 | AWA SWEDEN | - |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | US6372716 |
| OPPOSITION | EP0041173 |
| OPPOSITION | EP3225233 |
| OPPOSITION | US3717708 |
| OPPOSITION | WO2005058283 |
| OPPOSITION | WO2005089712 |
| OPPOSITION | WO2007053533 |
| SEARCH | US2001031721 |
| SEARCH | US3717708 |
| SEARCH | WO2005058283 |
| SEARCH | WO2005089712 |
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.
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Refund of fees
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(Electronic) Receipt
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Amended claims with annotations
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Claims
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French translation of claims
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German translation of the claims
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Letter accompanying subsequently filed items
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(Electronic) Receipt
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Letter accompanying subsequently filed items
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Translation of the claims
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Amended claims with annotations
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Letter accompanying subsequently filed items
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Request for further processing
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Letter accompanying subsequently filed items
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Mar 30, 2018
Written request for examination
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Sep 27, 2017
Refund of fees
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Notification of forthcoming publication
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European search opinion
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European search report
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Information on Search Strategy
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Search started
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Letter which had not been notified
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Communication to designated inventor
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Abstract
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Annex
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Claims
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Apr 13, 2017
Description
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Designation of inventor
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Drawings
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Request for grant of a European patent
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May 29, 2007