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The patent EP2981180 was granted to Purdue Research Foundation on Aug 13, 2025. The application was filed on Mar 22, 2014 under application number EP14721678A. 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 |
|---|---|---|---|
| TIENSE SUIKERRAFFINADERIJ | Sep 29, 2022 | KOSTER | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | US2006210696 |
| DESCRIPTION | US2008175977 |
| DESCRIPTION | US2008292766 |
| DESCRIPTION | US7608436 |
| DESCRIPTION | US8057840 |
| EXAMINATION | WO2010094789 |
| EXAMINATION | WO2011011094 |
| EXAMINATION | WO2011043654 |
| EXAMINATION | WO2011107482 |
| EXAMINATION | WO2012024638 |
| INTERNATIONAL-SEARCH-REPORT | EP1243273 |
| INTERNATIONAL-SEARCH-REPORT | US2003077255 |
| INTERNATIONAL-SEARCH-REPORT | US6203797 |
| INTERNATIONAL-SEARCH-REPORT | WO2004052121 |
| INTERNATIONAL-SEARCH-REPORT | WO2007050656 |
| OPPOSITION | EP1243273 |
| OPPOSITION | US2003077255 |
| OPPOSITION | US2006210696 |
| OPPOSITION | US2008175977 |
| OPPOSITION | US2008292766 |
| OPPOSITION | US2010273735 |
| OPPOSITION | US2014031526 |
| OPPOSITION | US6203797 |
| OPPOSITION | US7608436 |
| OPPOSITION | US8057840 |
| OPPOSITION | WO2004052121 |
| OPPOSITION | WO2007050656 |
| OPPOSITION | WO2010094789 |
| OPPOSITION | WO2011011094 |
| OPPOSITION | WO2011043654 |
| OPPOSITION | WO2011107482 |
| OPPOSITION | WO2012024638 |
| OTHER | EP2203561 |
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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Decision to grant a European patent
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(Electronic) Receipt
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Nov 23, 2021
French translation of claims
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Nov 23, 2021
German translation of the claims
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Nov 23, 2021
Letter accompanying subsequently filed items
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Jul 19, 2021
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Jul 19, 2021
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Apr 20, 2021
Amended description with annotations
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Apr 20, 2021
Description
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Apr 20, 2021
Letter accompanying subsequently filed items
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Apr 20, 2021
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Annex to the communication
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Dec 10, 2020
Communication from the Examining Division
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Sep 4, 2020
(Electronic) Receipt
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Sep 4, 2020
Amended claims with annotations
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Sep 4, 2020
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Sep 4, 2020
Letter accompanying subsequently filed items
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Apr 24, 2020
Communication from the Examining Division
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Apr 16, 2020
(Electronic) Receipt
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Apr 16, 2020
Filing of the translations of the claims
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Apr 16, 2020
Translation of the claims
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Apr 16, 2020
Translation of the claims
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Mar 11, 2020
Citation filed by a third party
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Mar 11, 2020
Letter accompanying subsequently filed items
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Mar 11, 2020
Non-patent literature filed by a third party
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Nov 28, 2019
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Intention to grant (signatures)
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Nov 28, 2019
Text intended for grant (clean copy)
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Nov 28, 2019
Oct 25, 2019
Advice of delivery
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Oct 22, 2019
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Oct 7, 2019
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Mar 13, 2019
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Sep 10, 2018
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Sep 10, 2018
Amended claims with annotations
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Sep 10, 2018
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Sep 10, 2018
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Sep 10, 2018
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Sep 10, 2018
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Sep 10, 2018
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Apr 4, 2018
Letter accompanying subsequently filed items
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Apr 4, 2018
Observations by third parties
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Feb 28, 2018
Annex to the communication
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Feb 28, 2018
Communication from the Examining Division
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Nov 13, 2017
(Electronic) Receipt
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Nov 13, 2017
Amended claims with annotations
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Nov 13, 2017
Claims
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Nov 13, 2017
Letter accompanying subsequently filed items
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Nov 13, 2017
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Sep 11, 2017
Letter accompanying subsequently filed items
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Sep 11, 2017
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Annex to the communication
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May 2, 2017
Communication from the Examining Division
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May 20, 2016
(Electronic) Receipt
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May 20, 2016
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Amended claims with annotations
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May 20, 2016
Amendments received before examination
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Letter accompanying subsequently filed items
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Letter which had not been notified
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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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Oct 6, 2015
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Amendments received before examination
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Sep 30, 2015
Request for entry into the European phase
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Jul 29, 2015
Information on entry into European phase
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Oct 14, 2014
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Copy of the international search report
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Sep 25, 2014
Published international application - A1
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Abstract
PCTISA
Apr 28, 2014
Annex
PCTISA
Apr 28, 2014
Annex
PCTISA
Apr 28, 2014
Claims
PCTISA
Apr 28, 2014
Description
PCTISA
Apr 28, 2014
Drawings
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