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The patent EP4087122 was granted to Huawei Digital Power on Oct 25, 2023. The application was filed on Apr 21, 2021 under application number EP21739218A. 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 |
|---|---|---|---|
| HOGAN LOVELLS | Jul 22, 2024 | SCHMID | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| EXAMINATION | CN208571937U |
| INTERNATIONAL-SEARCH-REPORT | CN102422429 |
| INTERNATIONAL-SEARCH-REPORT | CN205755139U |
| INTERNATIONAL-SEARCH-REPORT | CN209217929U |
| INTERNATIONAL-SEARCH-REPORT | CN211791234U |
| INTERNATIONAL-SEARCH-REPORT | US2008291609 |
| INTERNATIONAL-SEARCH-REPORT | US2012127770 |
| INTERNATIONAL-SEARCH-REPORT | US5896288 |
| OPPOSITION | CN208571937U |
| OPPOSITION | CN209217929U |
| OPPOSITION | US2008291609 |
| OPPOSITION | US2017373635 |
| OPPOSITION | US8159849 |
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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Means of redress
OPPO
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Sep 28, 2023
Decision to grant a European patent
Search/Exam
Sep 14, 2023
(Electronic) Receipt
Search/Exam
Sep 14, 2023
Filing of the translations of the claims
Search/Exam
Sep 14, 2023
French translation of claims
Search/Exam
Sep 14, 2023
German translation of the claims
Search/Exam
Jun 27, 2023
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Intention to grant (signatures)
Search/Exam
Jun 27, 2023
Text intended for grant (clean copy)
Search/Exam
Jun 27, 2023
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Jun 6, 2023
Annex to the communication
Search/Exam
Jun 6, 2023
Consultation by telephone/in person
Search/Exam
Jun 6, 2023
Jun 5, 2023
(Electronic) Receipt
Search/Exam
Jun 5, 2023
Amended claims with annotations
Search/Exam
Jun 5, 2023
Amended description with annotations
Search/Exam
Jun 5, 2023
Claims
Search/Exam
Jun 5, 2023
Description
Search/Exam
Jun 5, 2023
Letter accompanying subsequently filed items
Search/Exam
Jun 5, 2023
Apr 29, 2023
(Electronic) Receipt
Search/Exam
Apr 29, 2023
Amended claims with annotations
Search/Exam
Apr 29, 2023
Amended claims with annotations
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Apr 29, 2023
Amended claims with annotations
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Apr 29, 2023
Claims
Search/Exam
Apr 29, 2023
Claims
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Apr 29, 2023
Claims
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Apr 29, 2023
Letter accompanying subsequently filed items
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Apr 29, 2023
Nov 24, 2022
Annex to a communication
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Nov 24, 2022
Annex to the communication
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Nov 24, 2022
Summons to attend oral proceedings
Search/Exam
Oct 12, 2022
Notification of forthcoming publication
Search/Exam
Oct 10, 2022
Sep 22, 2022
Copy of the international search report
Search/Exam
Sep 22, 2022
Sep 22, 2022
International publication pamphlet
Search/Exam
Sep 8, 2022
(Electronic) Receipt
Search/Exam
Sep 8, 2022
Amended claims with annotations
Search/Exam
Sep 8, 2022
Amended description with annotations
Search/Exam
Sep 8, 2022
Claims
Search/Exam
Sep 8, 2022
Description
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Sep 8, 2022
Letter accompanying subsequently filed items
Search/Exam
Sep 8, 2022
Jul 22, 2022
Annex to the communication
Search/Exam
Jul 22, 2022
Communication from the Examining Division
Search/Exam
Jul 19, 2022
Examination started
Search/Exam
May 19, 2022
(Electronic) Receipt
Search/Exam
May 19, 2022
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Amended claims with annotations
Search/Exam
May 19, 2022
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Amended description with annotations
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May 19, 2022
Amendments received before examination
Search/Exam
May 19, 2022
Letter accompanying subsequently filed items
Search/Exam
May 4, 2022
Apr 14, 2022
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European search opinion
Search/Exam
Apr 14, 2022
Information on Search Strategy
Search/Exam
Apr 14, 2022
Supplementary European search report
Search/Exam
Apr 4, 2022
Search started
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Nov 15, 2021
Nov 5, 2021
Annexes in respect of a client data request
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Nov 5, 2021
Letter accompanying subsequently filed items
Search/Exam
Nov 5, 2021
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Letter accompanying subsequently filed items
Search/Exam
Oct 25, 2021
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Enquiry with the International Bureau
Search/Exam
Jul 20, 2021
(Electronic) Receipt
Search/Exam
Jul 20, 2021
Abstract
Search/Exam
Jul 20, 2021
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Amended claims with annotations
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Jul 20, 2021
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Amended description with annotations
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Jul 20, 2021
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Annex
Search/Exam
Jul 20, 2021
Annex
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Jul 20, 2021
Annex
Search/Exam
Jul 20, 2021
Claims
Search/Exam
Jul 20, 2021
Description
Search/Exam
Jul 20, 2021
Drawings
Search/Exam
Jul 20, 2021
Request for entry into the European phase
Search/Exam