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The patent EP3935025 was granted to Sika Technology on May 10, 2023. The application was filed on Mar 9, 2020 under application number EP20707684A. 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 |
|---|---|---|---|
| ARDEX GROUP | Feb 12, 2024 | BALS & VOGEL PATENTANWALTE PARTGMBB | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | EP2944622 |
| DESCRIPTION | WO2014174033 |
| INTERNATIONAL-SEARCH-REPORT | US2014275307 |
| INTERNATIONAL-SEARCH-REPORT | US2018050963 |
| INTERNATIONAL-SEARCH-REPORT | US6106608 |
| INTERNATIONAL-SEARCH-REPORT | WO2014174033 |
| INTERNATIONAL-SEARCH-REPORT | WO2016001256 |
| OPPOSITION | CN106116296 |
| OPPOSITION | DE102008020737 |
| OPPOSITION | EP1609770 |
| OPPOSITION | EP2313351 |
| OPPOSITION | KR101677457B |
| OPPOSITION | RO120631 |
| OPPOSITION | US2010190888 |
| OPPOSITION | US2014275307 |
| OPPOSITION | US2016304399 |
| OPPOSITION | US2017275204 |
| OPPOSITION | US2018050963 |
| OPPOSITION | US6106608 |
| OPPOSITION | WO2014174033 |
| OPPOSITION | WO2016001256 |
| OPPOSITION | WO2017021854 |
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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Dec 19, 2025
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Means of redress
Search/Exam
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Apr 14, 2023
Decision to grant a European patent
Search/Exam
Feb 1, 2023
(Electronic) Receipt
Search/Exam
Feb 1, 2023
Filing of the translations of the claims
Search/Exam
Feb 1, 2023
French translation of claims
Search/Exam
Feb 1, 2023
German translation of the claims
Search/Exam
Feb 1, 2023
Letter accompanying subsequently filed items
Search/Exam
Nov 9, 2022
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Intention to grant (signatures)
Search/Exam
Nov 9, 2022
Text intended for grant (clean copy)
Search/Exam
Nov 9, 2022
Oct 24, 2022
Examination started
Search/Exam
Apr 13, 2022
(Electronic) Receipt
Search/Exam
Apr 13, 2022
Apr 13, 2022
Amended claims with annotations
Search/Exam
Apr 13, 2022
Amendments received before examination
Search/Exam
Apr 13, 2022
Letter accompanying subsequently filed items
Search/Exam
Dec 15, 2021
Oct 15, 2021
Oct 9, 2021
Priority search results copy provided by EPO
Search/Exam
Sep 30, 2021
(Electronic) Receipt
Search/Exam
Sep 30, 2021
Request for entry into the European phase
Search/Exam
Sep 20, 2021
Jul 16, 2021
Information on entry into European phase
Search/Exam
Sep 28, 2020
Sep 10, 2020
Copy of the international search report
Search/Exam
Sep 10, 2020
Published international application - A1
Search/Exam
May 15, 2020
May 14, 2020
(Electronic) Receipt
PCTRO
May 14, 2020
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Mar 9, 2020
(Electronic) Receipt
PCTRO
Mar 9, 2020
Abstract
PCTRO
Mar 9, 2020
Claims
PCTRO
Mar 9, 2020
Description
PCTRO
Mar 9, 2020
Mar 9, 2020
Mar 9, 2020