The patent EP2771387 was granted to Stora Enso OYJ on Mar 8, 2017. The application was originally filed on Oct 25, 2012 under application number EP12843796A. The patent is currently recorded with a legal status of "Granted And Under Opposition".

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.
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | EP2236664 |
| INTERNATIONAL-SEARCH-REPORT | EP2236664 |
| INTERNATIONAL-SEARCH-REPORT | US2010233468 |
| INTERNATIONAL-SEARCH-REPORT | US4510020 |
| INTERNATIONAL-SEARCH-REPORT | US5731080 |
| INTERNATIONAL-SEARCH-REPORT | US6183596 |
| INTERNATIONAL-SEARCH-REPORT | WO03033815 |
| INTERNATIONAL-SEARCH-REPORT | WO2008121069 |
| INTERNATIONAL-SEARCH-REPORT | WO2010115785 |
| INTERNATIONAL-SEARCH-REPORT | WO2010131016 |
| INTERNATIONAL-SEARCH-REPORT | WO9318111 |
| OPPOSITION | EP2236664 |
| OPPOSITION | EP2386683 |
| OPPOSITION | US2010233245 |
| OPPOSITION | WO2010115785 |
| OPPOSITION | WO2011134938 |
NPL citations refer to non-patent references such as research papers, articles, or other publications cited during examination or opposition phases.
| Citation Phase | Reference Text |
|---|---|
| INTERNATIONAL-SEARCH-REPORT | - HENRIKSSON M. ET AL, "Cellulose Nanopaper Structures of High Toughness", BIOMACROMOLECULES, (2008), vol. 9, pages 1579 - 1585, XP008155468 |
| OPPOSITION | - "CALOFROTĀ® U: Technical Data Sheet", Specialty Minerals, (20040000), XP055444580 |
| OPPOSITION | - M.J. Clugston, The New Penguin Dictionary of Science, (19980000), page 135 & 316, XP055444551 |
| OPPOSITION | - YANO et al., "Preparation and mechanical properties of bacterial cellulose nanocomposites loaded with silica nanoparticles", Cellulose, (20070817), vol. 15, no. 1, pages 111 - 120, XP019570943 |
| OPPOSITION | - P.H. NADEAU, "The Physical Dimensions of Fundamental Clay Particles", Clay Minerals, (19850000), vol. 20, no. 4, pages 499 - 514, XP055444615 |
| OPPOSITION | - SUBRAMANIAN et al., "PRECIPITATED CALCIUM CARBONATE (PCC)- CELLULOSECOMPOSITE FILLERS; EFFECT OF PCC PARTICLE STRUCTUREON THE PRODUCTION AND PROPERTIES OF UNCOATED FINEPAPER", BioResources, (20070000), vol. 2, no. 1, pages 91 - 105, XP055178263 |
| SEARCH | [Ā ] - No further relevant documents disclosed |
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Description
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Refund of fees
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Decision to grant a European patent
Search/Exam
Jan 30, 2017
Filing of the translations of the claims
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French translation of claims
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German translation of the claims
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Jan 30, 2017
Matter concerning the application
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Jan 25, 2017
Filing of the translations of the claims
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Jan 25, 2017
French translation of claims
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German translation of the claims
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Intention to grant (signatures)
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Oct 20, 2016
Text intended for grant (clean copy)
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Oct 20, 2016
Jun 14, 2016
Amended description with annotations
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Jun 14, 2016
Description
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Jun 14, 2016
Jun 9, 2016
Amended description with annotations
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Jun 9, 2016
Description
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Jun 9, 2016
Apr 11, 2016
Annex to the communication
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Apr 11, 2016
Communication from the Examining Division
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Apr 5, 2016
Examination started
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Nov 2, 2015
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Cover sheet for fax transmission
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Nov 2, 2015
Priority search results
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Oct 28, 2015
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Priority search results
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Amended claims with annotations
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Oct 5, 2015
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Sep 30, 2015
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Amended claims with annotations
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Sep 30, 2015
Amendments received before examination
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Mar 31, 2015
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European search opinion
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Mar 13, 2015
Supplementary European search report
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Mar 5, 2015
Search started
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Feb 2, 2015
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Claim deemed abandoned
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Aug 6, 2014
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Communication to designated inventor
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Jun 3, 2014
Communication to designated inventor
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Communication to designated inventor
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Jun 3, 2014
Communication to designated inventor
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May 22, 2014
May 13, 2014
(Electronic) Receipt
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May 13, 2014
Annex
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May 13, 2014
Annex
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May 13, 2014
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Request for entry into the European phase
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Mar 10, 2014
Information on entry into European phase
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May 24, 2013
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Copy of the international search report
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May 2, 2013
May 2, 2013
Published international application - A1
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