The patent EP3859944 was granted to Sumitomo Bakelite on Jun 28, 2023. The application was originally filed on Aug 29, 2011 under application number EP21163935A. 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.
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 | Link |
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OPPOSITION | - Batzer Hans, Polymere Werkstoffe, Band III Technologie 2, Georg Thieme Verlag, (19840101), pages 170 - 225, XP093180855 | - |
OPPOSITION | - May Clayton A., Epoxy Resins - Chemistry and Technology, 2nd ed., Marcel Dekker, Inc., (19880101), pages 798 - 805, 808, XP093180863 | - |
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OPPO
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Decision to grant a European patent
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May 23, 2023
(Electronic) Receipt
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May 23, 2023
Filing of the translations of the claims
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May 23, 2023
French translation of claims
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May 23, 2023
German translation of the claims
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May 23, 2023
Letter accompanying subsequently filed items
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Intention to grant (signatures)
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Jan 23, 2023
Text intended for grant (clean copy)
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Jan 23, 2023
Nov 7, 2022
(Electronic) Receipt
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Nov 7, 2022
Amended claims with annotations
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Nov 7, 2022
Amended description with annotations
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Nov 7, 2022
Claims
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Description
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Nov 7, 2022
Letter accompanying subsequently filed items
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Annex to the communication
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Jun 28, 2022
Communication from the Examining Division
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May 18, 2022
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Observations by third parties
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Apr 26, 2022
(Electronic) Receipt
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Apr 26, 2022
Amended claims with annotations
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Apr 26, 2022
Amended description with annotations
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Apr 26, 2022
Claims
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Description
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Letter accompanying subsequently filed items
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Annex to the communication
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Mar 30, 2022
Communication from the Examining Division
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Mar 22, 2022
Examination started
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Jan 25, 2022
(Electronic) Receipt
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Jan 25, 2022
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Amended claims with annotations
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Jan 25, 2022
Amendments received before examination
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Jan 25, 2022
Letter accompanying subsequently filed items
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Aug 9, 2021
Jul 7, 2021
Notification of forthcoming publication
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Jun 18, 2021
Refund of fees
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Jun 15, 2021
Jun 15, 2021
European search opinion
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Jun 15, 2021
European search report
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Jun 15, 2021
Information on Search Strategy
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Jun 7, 2021
Search started
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Mar 22, 2021
Abstract
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Annex
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Mar 22, 2021
Claims
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Description
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Designation of inventor
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Drawings
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Mar 22, 2021
Matter concerning the application
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Mar 22, 2021
Request for grant of a European patent
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Mar 26, 2012