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The patent EP3121628 was granted to Guangzhou OED on Jun 2, 2021. The application was filed on Feb 11, 2015 under application number EP15752879A. 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.
| Company | Opposition Date | Representative | Opposition Status |
|---|---|---|---|
| E INK | Mar 2, 2022 | MATHYS & SQUIRE | - |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| EXAMINATION | JPH10199316 |
| EXAMINATION | US2007274100 |
| INTERNATIONAL-SEARCH-REPORT | CN102279436 |
| INTERNATIONAL-SEARCH-REPORT | CN102279498 |
| INTERNATIONAL-SEARCH-REPORT | CN102563466 |
| INTERNATIONAL-SEARCH-REPORT | CN103363440 |
| INTERNATIONAL-SEARCH-REPORT | CN103631450 |
| INTERNATIONAL-SEARCH-REPORT | CN1886621 |
| INTERNATIONAL-SEARCH-REPORT | CN203732748U |
| INTERNATIONAL-SEARCH-REPORT | CN203732852U |
| INTERNATIONAL-SEARCH-REPORT | CN203849531U |
| OPPOSITION | CN203732748U |
| OPPOSITION | CN203732852U |
| OPPOSITION | CN203849531U |
| OPPOSITION | EP1688665 |
| OPPOSITION | US2010226118 |
| OPPOSITION | US2012002437 |
| OPPOSITION | US2013063682 |
| OPPOSITION | US2013258705 |
| OPPOSITION | US2014002428 |
| OPPOSITION | US6601962 |
| OPPOSITION | US7575358 |
| OPPOSITION | WO03104884 |
| OTHER | CN103363440 |
| OTHER | JPH10199316 |
| OTHER | US2002101399 |
| OTHER | US2012051093 |
| OTHER | US2013063968 |
| OTHER | US2013258705 |
| OTHER | US6601962 |
| OTHER | US7513813 |
| SEARCH | EP1688665 |
| SEARCH | US2012250348 |
| SEARCH | US2012294034 |
| SEARCH | US6601962 |
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.
Date
Description
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Jan 5, 2026
(Electronic) Receipt
Appeal
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Appeal
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Appeal
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Reply to appeal
Appeal
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Appeal
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Notice of appeal
Appeal
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Jun 15, 2021
May 7, 2021
Decision to grant a European patent
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Apr 23, 2021
(Electronic) Receipt
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Apr 23, 2021
French translation of claims
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Apr 23, 2021
German translation of the claims
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Apr 23, 2021
Letter accompanying subsequently filed items
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Mar 1, 2021
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Intention to grant (signatures)
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Jan 19, 2021
Text intended for grant (clean copy)
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Jan 19, 2021
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Oct 27, 2020
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(Electronic) Receipt
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Sep 21, 2020
Letter accompanying subsequently filed items
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Sep 21, 2020
Jan 27, 2020
Annex to the communication
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Jan 27, 2020
Summons to attend oral proceedings
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Jun 12, 2019
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Non-patent literature filed by a third party
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Jun 3, 2019
Non-patent literature filed by a third party
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Jun 3, 2019
Observations by third parties
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Jun 3, 2019
Observations by third parties
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Apr 29, 2019
(Electronic) Receipt
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Apr 29, 2019
Amended claims with annotations
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Amended description with annotations
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Apr 29, 2019
Claims
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Apr 29, 2019
Description
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Apr 29, 2019
Letter accompanying subsequently filed items
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Apr 29, 2019
Dec 19, 2018
Annex to the communication
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Dec 19, 2018
Communication from the Examining Division
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Nov 26, 2018
Examination started
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Oct 15, 2018
Oct 11, 2018
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Refund of fees
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Oct 1, 2018
Sep 26, 2018
Decision to allow further processing
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Notice on debiting of fees
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Sep 12, 2018
(Electronic) Receipt
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Sep 12, 2018
Letter accompanying subsequently filed items
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Sep 12, 2018
Non-patent literature filed by a third party
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Observations by third parties
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Patent document filed by a Third party
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Patent document filed by a Third party
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Aug 29, 2018
(Electronic) Receipt
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Aug 29, 2018
Aug 29, 2018
Amended claims with annotations
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Aug 29, 2018
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Amended description with annotations
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Aug 29, 2018
Letter accompanying subsequently filed items
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Aug 29, 2018
Request for further processing
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Jun 25, 2018
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(Electronic) Receipt
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Jan 19, 2018
Letter accompanying subsequently filed items
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Jan 19, 2018
Non-patent literature filed by a third party
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Jan 19, 2018
Observations by third parties
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Jan 18, 2018
Observations by third parties
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Nov 6, 2017
Oct 16, 2017
Oct 16, 2017
European search opinion
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Oct 16, 2017
Information on Search Strategy
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Oct 16, 2017
Supplementary European search report
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Sep 27, 2017
Search started
Search/Exam
Jul 18, 2017
Jul 14, 2017
Jul 6, 2017
Patent document filed by a Third party
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Jul 6, 2017
Patent document filed by a Third party
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Jul 6, 2017
Patent document filed by a Third party
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Jul 6, 2017
Patent document filed by a Third party
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Jun 28, 2017
Observations by third parties
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Jun 27, 2017
Observations by third parties
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Feb 24, 2017
Payment of fees and costs
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Feb 21, 2017
Feb 14, 2017
Feb 8, 2017
Matter concerning the application
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Feb 8, 2017
Modified abstract
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Jan 24, 2017
Annexes in respect of a client data request
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Jan 24, 2017
Jan 4, 2017
Notification of forthcoming publication
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Nov 29, 2016
Nov 17, 2016
Oct 12, 2016
Oct 5, 2016
Sep 30, 2016
Communication to designated inventor
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Sep 30, 2016
Communication to designated inventor
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Sep 14, 2016
(Electronic) Receipt
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Sep 14, 2016
Abstract
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Sep 14, 2016
Claims
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Sep 14, 2016
Description
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Sep 14, 2016
Drawings
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Sep 14, 2016
Request for entry into the European phase
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Sep 6, 2016
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Jul 1, 2016
Information on entry into European phase
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Sep 17, 2015
Aug 27, 2015
Copy of the international search report
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Aug 27, 2015
Aug 27, 2015
International publication pamphlet
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