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The patent EP3929620 was granted to Stichting Imec Nederland on Jul 24, 2024. The application was filed on Jun 26, 2020 under application number EP20182622A. 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 |
|---|---|---|---|
| LAMBDA ENTWICKLUNGEN | Apr 24, 2025 | RAFFAY & FLECK | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | EP3502736 |
| DESCRIPTION | US2016178744 |
| EXAMINATION | EP3564707 |
| OPPOSITION | EP2347280 |
| OPPOSITION | EP3502736 |
| OPPOSITION | EP3564706 |
| OPPOSITION | US2016178744 |
| OPPOSITION | US2019253282 |
| OPPOSITION | US2021344524 |
| OPPOSITION | US7680218 |
| OPPOSITION | WO2017062902 |
| OPPOSITION | WO2019172412 |
| OTHER | EP3564707 |
| SEARCH | US10499363 |
| SEARCH | US2019187263 |
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 7, 2026
Jan 7, 2026
Dec 18, 2025
(Electronic) Receipt
Appeal
Dec 18, 2025
(Electronic) Receipt
Appeal
Dec 18, 2025
Dec 18, 2025
Dec 18, 2025
Notice of appeal
Appeal
Nov 24, 2025
Nov 24, 2025
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Means of redress
OPPO
Nov 24, 2025
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Aug 6, 2024
Jun 27, 2024
Decision to grant a European patent
Search/Exam
Jun 14, 2024
(Electronic) Receipt
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Jun 14, 2024
French translation of claims
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Jun 14, 2024
German translation of the claims
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Jun 14, 2024
Letter accompanying subsequently filed items
Search/Exam
Mar 27, 2024
Mar 27, 2024
Mar 27, 2024
Mar 27, 2024
Intention to grant (signatures)
Search/Exam
Mar 27, 2024
Text intended for grant (clean copy)
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Mar 27, 2024
Mar 18, 2024
Mar 15, 2024
(Electronic) Receipt
Search/Exam
Mar 15, 2024
Amended claims with annotations
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Mar 15, 2024
Claims
Search/Exam
Mar 15, 2024
Letter accompanying subsequently filed items
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Mar 15, 2024
Mar 14, 2024
Annex to the communication
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Mar 14, 2024
Consultation by telephone/in person
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Mar 14, 2024
Jan 22, 2024
(Electronic) Receipt
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Jan 22, 2024
Annex to the communication
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Jan 22, 2024
Consultation by telephone/in person
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Jan 22, 2024
Letter accompanying subsequently filed items
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Jan 22, 2024
Oral proceedings: reply to date proposed
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Jan 22, 2024
Jan 19, 2024
(Electronic) Receipt
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Jan 19, 2024
Amended claims with annotations
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Jan 19, 2024
Claims
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Jan 19, 2024
Letter accompanying subsequently filed items
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Jan 19, 2024
Oct 24, 2023
Annex to the communication
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Oct 24, 2023
Summons to attend oral proceedings
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Sep 25, 2023
(Electronic) Receipt
Search/Exam
Sep 25, 2023
Amended claims with annotations
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Sep 25, 2023
Claims
Search/Exam
Sep 25, 2023
Letter accompanying subsequently filed items
Search/Exam
Sep 25, 2023
May 15, 2023
May 15, 2023
May 15, 2023
May 15, 2023
Intention to grant (signatures)
Search/Exam
May 15, 2023
Text intended for grant (clean copy)
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May 15, 2023
Apr 11, 2023
(Electronic) Receipt
Search/Exam
Apr 11, 2023
Amended description with annotations
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Apr 11, 2023
Description
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Apr 11, 2023
Letter accompanying subsequently filed items
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Apr 11, 2023
Nov 30, 2022
Nov 30, 2022
Nov 30, 2022
Nov 30, 2022
Intention to grant (signatures)
Search/Exam
Nov 30, 2022
Text intended for grant (clean copy)
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Nov 30, 2022
Oct 21, 2022
Oct 21, 2022
Oct 18, 2022
(Electronic) Receipt
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Oct 18, 2022
Citation filed by a third party
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Oct 18, 2022
Letter accompanying subsequently filed items
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Oct 18, 2022
Observations by third parties
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Sep 19, 2022
Examination started
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May 20, 2022
(Electronic) Receipt
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May 20, 2022
Letter concerning fees and payments
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Feb 3, 2022
Document concerning representation
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Feb 3, 2022
Document concerning representation
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Jan 10, 2022
Dec 1, 2021
Notification of forthcoming publication
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Dec 21, 2020
CDS Clean up - amended applicant details
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Nov 26, 2020
Nov 26, 2020
European search opinion
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Nov 26, 2020
European search report
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Nov 26, 2020
Information on Search Strategy
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Nov 11, 2020
Search started
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Aug 19, 2020
Communication to designated inventor
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Aug 19, 2020
Communication to designated inventor
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Aug 19, 2020
Communication to designated inventor
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Jun 26, 2020
Abstract
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Jun 26, 2020
Jun 26, 2020
Claims
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Jun 26, 2020
Description
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Jun 26, 2020
Designation of inventor
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Jun 26, 2020
Drawings
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Jun 26, 2020
Request for grant of a European patent
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