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The patent EP4007686 was granted to Berndorf on Sep 6, 2023. The application was filed on Jul 30, 2020 under application number EP20767948A. 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 |
|---|---|---|---|
| HEIMBACH | Jun 6, 2024 | PAUL & ALBRECHT PATENTANWALTE PARTG MBB | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | AT514722B |
| DESCRIPTION | US3728066 |
| INTERNATIONAL-SEARCH-REPORT | EP1164094 |
| INTERNATIONAL-SEARCH-REPORT | GB594052 |
| INTERNATIONAL-SEARCH-REPORT | US4342809 |
| INTERNATIONAL-SEARCH-REPORT | US5681612 |
| INTERNATIONAL-SEARCH-REPORT | WO03078859 |
| INTERNATIONAL-SEARCH-REPORT | WO2016123645 |
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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Oct 27, 2025
Oct 27, 2025
Oct 22, 2025
Oct 21, 2025
Refund of fees
Appeal
Oct 17, 2025
Oct 17, 2025
Oct 14, 2025
Oct 14, 2025
Oct 10, 2025
(Electronic) Receipt
Appeal
Oct 10, 2025
Oct 10, 2025
Withdrawal of an appeal
Appeal
Oct 7, 2025
Sep 22, 2025
(Electronic) Receipt
Appeal
Sep 22, 2025
Sep 22, 2025
Sep 11, 2025
Sep 4, 2025
(Electronic) Receipt
Appeal
Sep 4, 2025
Authorisation
Appeal
Sep 4, 2025
Notice of appeal
Appeal
Sep 4, 2025
Notice of appeal
Appeal
Jul 4, 2025
Jul 4, 2025
Jul 4, 2025
Jul 4, 2025
Jul 4, 2025
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Means of redress
OPPO
Jul 4, 2025
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Jul 4, 2025
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Jun 10, 2025
Jun 10, 2025
Authorisation
OPPO
Jun 10, 2025
Jun 10, 2025
Jun 4, 2025
Jun 3, 2025
(Electronic) Receipt
Search/Exam
Jun 3, 2025
Jun 3, 2025
(Electronic) Receipt
Search/Exam
Jun 3, 2025
Jun 3, 2025
Jun 3, 2025
General authorisation
Search/Exam
Jun 3, 2025
Jun 3, 2025
Letter accompanying subsequently filed items
Search/Exam
Jun 3, 2025
Jun 3, 2025
Letter accompanying subsequently filed items
Search/Exam
Jun 3, 2025
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Description
OPPO
May 13, 2025
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Description
OPPO
Mar 28, 2025
Description
OPPO
Mar 28, 2025
Description
OPPO
Mar 28, 2025
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Sep 19, 2023
Aug 10, 2023
Decision to grant a European patent
Search/Exam
Jun 28, 2023
(Electronic) Receipt
Search/Exam
Jun 28, 2023
English translation of the claims
Search/Exam
Jun 28, 2023
Filing of the translations of the claims
Search/Exam
Jun 28, 2023
French translation of claims
Search/Exam
Jun 28, 2023
Letter accompanying subsequently filed items
Search/Exam
Mar 2, 2023
Mar 2, 2023
Mar 2, 2023
Mar 2, 2023
Intention to grant (signatures)
Search/Exam
Mar 2, 2023
Text intended for grant (clean copy)
Search/Exam
Mar 2, 2023
Jan 13, 2023
Examination started
Search/Exam
May 12, 2022
May 11, 2022
May 11, 2022
May 5, 2022
(Electronic) Receipt
Search/Exam
May 5, 2022
Authorisation
Search/Exam
May 5, 2022
General enquiry
Search/Exam
May 5, 2022
Letter accompanying subsequently filed items
Search/Exam
Mar 11, 2022
Invitation to file authorisation
Search/Exam
Mar 1, 2022
(Electronic) Receipt
Search/Exam
Mar 1, 2022
Request for entry into the European phase
Search/Exam
Feb 7, 2022
Feb 7, 2022
Dec 10, 2021
Information on entry into European phase
Search/Exam
Oct 11, 2021
Oct 11, 2021
Oct 11, 2021
Oct 11, 2021
Oct 11, 2021
Sep 6, 2021
Jul 12, 2021
Written opinion
PCT2
Jul 12, 2021
Jul 12, 2021
Jul 1, 2021
Notification of election of EPO
Search/Exam
Jun 4, 2021
May 28, 2021
May 28, 2021
PCT demand form
PCT2
May 28, 2021
May 28, 2021
May 28, 2021
May 28, 2021
Feb 22, 2021
Feb 4, 2021
Copy of the international search report
Search/Exam
Feb 4, 2021
Copy of the international search report
Search/Exam
Feb 4, 2021
Published international application - A1
Search/Exam
Nov 10, 2020
ISR: cited documents
PCTISA
Nov 10, 2020
Nov 10, 2020
Nov 10, 2020
Nov 10, 2020
Sep 21, 2020
Sep 5, 2020
Abstract
PCTISA
Sep 5, 2020
Claims
PCTISA
Sep 5, 2020
Description
PCTISA
Sep 5, 2020
Drawings
PCTISA
Sep 5, 2020