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The patent EP2931892 was granted to Massachusetts Institute OF Technology on Sep 12, 2018. The application was filed on Dec 12, 2013 under application number EP13812447A. 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 |
|---|---|---|---|
| MATHYS & SQUIRE | Jun 12, 2019 | WILDING | ADMISSIBLE |
| SCHLICH | Jun 12, 2019 | SCHLICH | ADMISSIBLE |
| CRISPR THERAPEUTICS | Feb 28, 2019 | VOSSIUS & PARTNER PATENTANWALTE RECHTSANWALTE MBB | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | US20040491026 |
| DESCRIPTION | US20040815730 |
| DESCRIPTION | US20090511940 |
| DESCRIPTION | EP0264166 |
| DESCRIPTION | US2009100536 |
| DESCRIPTION | US2011059502 |
| DESCRIPTION | US4873316 |
| DESCRIPTION | US5210015 |
| DESCRIPTION | US5445934 |
| DESCRIPTION | US6603061 |
| DESCRIPTION | US6750059 |
| DESCRIPTION | US7776321 |
| DESCRIPTION | US7868149 |
| DESCRIPTION | WO2011028929 |
| DESCRIPTION | WO9639154 |
| DESCRIPTION | WO9703211 |
| INTERNATIONAL-SEARCH-REPORT | US2004111221 |
| INTERNATIONAL-SEARCH-REPORT | US2012029891 |
| OPPOSITION | EP2771468 |
| OPPOSITION | US2012029891 |
| OPPOSITION | US201261736527P |
| OPPOSITION | US201361748427P |
| OPPOSITION | US201361758468P |
| OPPOSITION | US201361769046P |
| OPPOSITION | US201361791409P |
| OPPOSITION | US201361802174P |
| OPPOSITION | US201361806375P |
| OPPOSITION | US201361814263P |
| OPPOSITION | US201361819803P |
| OPPOSITION | US201361828130P |
| OPPOSITION | US201361835931P |
| OPPOSITION | US201361836080P |
| OTHER | EP2771468 |
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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(Electronic) Receipt
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Amended claims with annotations
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Nov 30, 2017
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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Letter concerning the inventor
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Annex to the communication
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Communication from the Examining Division
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(Electronic) Receipt
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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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Annex to the communication
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Communication from the Examining Division
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(Electronic) Receipt
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Letter accompanying subsequently filed items
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Apr 24, 2015
Information on entry into European phase
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CDS Clean up - amended applicant details
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Copy of the international search report
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Jun 19, 2014
Published international application - A1
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