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The patent EP3702157 was granted to Wemhner Surface on Oct 20, 2021. The application was filed on Feb 21, 2020 under application number EP20158651A. The patent is currently recorded with a legal status of "Revoked".

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 |
|---|---|---|---|
| DIEFFENBACHER MASCHINENFABRIK | Jul 20, 2022 | HARTDEGEN | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | EP2796293 |
| OPPOSITION | DE10146304 |
| OPPOSITION | DE102005009835 |
| OPPOSITION | DE102005020456 |
| OPPOSITION | DE10356427 |
| OPPOSITION | EP2796293 |
| SEARCH | DE10146304 |
| SEARCH | DE102005009835 |
| SEARCH | DE102005020456 |
| SEARCH | DE10356427 |
| SEARCH | EP2796293 |
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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Jul 24, 2024
Refund of fees
Appeal
Jul 23, 2024
Jul 23, 2024
Jul 23, 2024
Jul 23, 2024
Jul 23, 2024
Jul 23, 2024
Jul 18, 2024
(Electronic) Receipt
Appeal
Jul 18, 2024
Jul 18, 2024
Withdrawal of an appeal
Appeal
Jul 2, 2024
Jul 2, 2024
Jul 1, 2024
Jul 1, 2024
Jun 19, 2024
Jun 19, 2024
Jun 14, 2024
Jun 10, 2024
Jun 4, 2024
(Electronic) Receipt
Appeal
Jun 4, 2024
(Electronic) Receipt
Appeal
Jun 4, 2024
Jun 4, 2024
Jun 4, 2024
Notice of appeal
Appeal
Jun 4, 2024
Notice of appeal
Appeal
Jun 3, 2024
Request for correction
Appeal
Jun 3, 2024
Apr 5, 2024
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Means of redress
OPPO
Apr 5, 2024
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Authorisation
OPPO
Feb 26, 2024
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Nov 3, 2021
Sep 23, 2021
Decision to grant a European patent
Search/Exam
Sep 10, 2021
(Electronic) Receipt
Search/Exam
Sep 10, 2021
English translation of the claims
Search/Exam
Sep 10, 2021
French translation of claims
Search/Exam
Sep 10, 2021
Letter accompanying subsequently filed items
Search/Exam
Sep 9, 2021
Letter concerning fees and payments
Search/Exam
Sep 9, 2021
Payment of fees and costs
Search/Exam
Sep 9, 2021
Payment of fees and costs
Search/Exam
Jul 29, 2021
Jul 29, 2021
Jul 29, 2021
Intention to grant (signatures)
Search/Exam
Jul 29, 2021
Text intended for grant (clean copy)
Search/Exam
Jul 29, 2021
Jul 2, 2021
Examination started
Search/Exam
Feb 22, 2021
Letter concerning fees and payments
Search/Exam
Feb 22, 2021
Letter concerning fees and payments
Search/Exam
Feb 22, 2021
Payment of fees and costs
Search/Exam
Nov 25, 2020
(Electronic) Receipt
Search/Exam
Nov 25, 2020
Nov 25, 2020
Amended claims with annotations
Search/Exam
Nov 25, 2020
Amendments received before examination
Search/Exam
Nov 25, 2020
Letter accompanying subsequently filed items
Search/Exam
Sep 7, 2020
Aug 5, 2020
Notification of forthcoming publication
Search/Exam
Jul 9, 2020
Jul 9, 2020
European search opinion
Search/Exam
Jul 9, 2020
European search report
Search/Exam
Jul 9, 2020
Information on Search Strategy
Search/Exam
Jun 29, 2020
Search started
Search/Exam
Apr 17, 2020
Communication to designated inventor
Search/Exam
Feb 24, 2020
Letter concerning the priority
Search/Exam
Feb 24, 2020
Feb 24, 2020
Priority document
Search/Exam
Feb 21, 2020
Abstract
Search/Exam
Feb 21, 2020
Feb 21, 2020
Authorisation
Search/Exam
Feb 21, 2020
Claims
Search/Exam
Feb 21, 2020
Description
Search/Exam
Feb 21, 2020
Designation of inventor
Search/Exam
Feb 21, 2020
Drawings
Search/Exam
Feb 21, 2020
Letter concerning fees and payments
Search/Exam
Feb 21, 2020
Letter concerning fees and payments
Search/Exam
Feb 21, 2020
Payment of fees and costs
Search/Exam
Feb 21, 2020
Priority search results
Search/Exam
Feb 21, 2020
Request for grant of a European patent
Search/Exam