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The patent EP2582794 was granted to Cellular Dynamics on Apr 24, 2024. The application was filed on Jun 14, 2011 under application number EP11796290A. The patent is currently recorded with a legal status of "Patent Maintained As Amended".

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 |
|---|---|---|---|
| JAMES POOLE | Dec 7, 2018 | CARPMAELS & RANSFORD | ADMISSIBLE |
| MATHYS & SQUIRE | Dec 7, 2018 | GREGSON | ADMISSIBLE |
| LONZA WALKERSVILLE | Dec 7, 2018 | EDER | WITHDRAWN |
| STRAWMAN | Dec 7, 2018 | MEWBURN ELLIS | WITHDRAWN |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | US20080058858 |
| DESCRIPTION | US20080088054 |
| DESCRIPTION | US20090156304 |
| DESCRIPTION | US20090258120 |
| DESCRIPTION | US20090478154 |
| DESCRIPTION | US20090539366 |
| DESCRIPTION | WO1994US08574 |
| DESCRIPTION | WO1994US09760 |
| DESCRIPTION | WO1994US10501 |
| DESCRIPTION | US2002076976 |
| DESCRIPTION | US2003059913 |
| DESCRIPTION | US2003087919 |
| DESCRIPTION | US2003125344 |
| DESCRIPTION | US2003211603 |
| DESCRIPTION | US2004002507 |
| DESCRIPTION | US2004002508 |
| DESCRIPTION | US2004014755 |
| DESCRIPTION | US2004039796 |
| DESCRIPTION | US2005192304 |
| DESCRIPTION | US2005209261 |
| DESCRIPTION | US2007116680 |
| DESCRIPTION | US2007238170 |
| DESCRIPTION | US2008004287 |
| DESCRIPTION | US2008038820 |
| DESCRIPTION | US2008226558 |
| DESCRIPTION | US2008254003 |
| DESCRIPTION | US2009047739 |
| DESCRIPTION | US2010003757 |
| DESCRIPTION | US2010041054 |
| DESCRIPTION | US2010279403 |
| DESCRIPTION | US2011104125 |
| DESCRIPTION | US4683202 |
| DESCRIPTION | US4684611 |
| DESCRIPTION | US4714680 |
| DESCRIPTION | US4952500 |
| DESCRIPTION | US5302523 |
| DESCRIPTION | US5322783 |
| DESCRIPTION | US5384253 |
| DESCRIPTION | US5464765 |
| DESCRIPTION | US5478838 |
| DESCRIPTION | US5538877 |
| DESCRIPTION | US5538880 |
| DESCRIPTION | US5550318 |
| DESCRIPTION | US5563055 |
| DESCRIPTION | US5580859 |
| DESCRIPTION | US5589466 |
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| DESCRIPTION | US5610042 |
| DESCRIPTION | US5656610 |
| DESCRIPTION | US5702932 |
| DESCRIPTION | US5728581 |
| DESCRIPTION | US5736524 |
| DESCRIPTION | US5780448 |
| DESCRIPTION | US5789215 |
| DESCRIPTION | US5925565 |
| DESCRIPTION | US5928906 |
| DESCRIPTION | US5935819 |
| DESCRIPTION | US5945100 |
| DESCRIPTION | US5981274 |
| DESCRIPTION | US5994624 |
| DESCRIPTION | WO02076976 |
| DESCRIPTION | WO03059913 |
| DESCRIPTION | WO03062225 |
| DESCRIPTION | WO03062227 |
| DESCRIPTION | WO2004039796 |
| DESCRIPTION | WO2005123902 |
| DESCRIPTION | WO2007113505 |
| DESCRIPTION | WO2008006583 |
| DESCRIPTION | WO2008094597 |
| DESCRIPTION | WO2010003757 |
| DESCRIPTION | WO9409699 |
| DESCRIPTION | WO9506128 |
| DESCRIPTION | WO9830679 |
| DESCRIPTION | WO9920741 |
| OPPOSITION | EP2307539 |
| OPPOSITION | EP2434012 |
| OPPOSITION | US2010041054 |
| OPPOSITION | WO2009148057 |
| OPPOSITION | WO2009149233 |
| OPPOSITION | WO2010013845 |
| OPPOSITION | WO2010048567 |
| OPPOSITION | WO2010134526 |
| OPPOSITION | WO2010141801 |
| OPPOSITION | WO2011016588 |
| SEARCH | WO2010141801 |
| SEARCH | WO2011143343 |
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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Description
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Letter which had not been notified
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Notification of the recording of a change
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Notification of election of EPO
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Copy of the international search report
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Published international application - A2
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