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The patent EP3603941 was granted to Tremco CPG Germany on Apr 5, 2023. The application was filed on Aug 2, 2019 under application number EP19189783A. 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 |
|---|---|---|---|
| ISO CHEMIE | Jan 2, 2024 | WACHTER | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| OPPOSITION | DE102006043050 |
| OPPOSITION | DE202012103636U |
| OPPOSITION | DE2112242 |
| OPPOSITION | DE3133271 |
| OPPOSITION | DE3544277 |
| OPPOSITION | EP1936246 |
| OPPOSITION | EP2107176 |
| OPPOSITION | EP2554773 |
| OPPOSITION | EP2733271 |
| OPPOSITION | EP2851478 |
| OPPOSITION | EP2990551 |
| OPPOSITION | EP2990552 |
| OPPOSITION | EP2990553 |
| OPPOSITION | EP2990575 |
| OPPOSITION | EP3278967 |
| OPPOSITION | EP3404156 |
| OPPOSITION | EP3450642 |
| OPPOSITION | EP3450643 |
| OPPOSITION | EP3567174 |
| OPPOSITION | US2016059536 |
| OPPOSITION | US2016060068 |
| OPPOSITION | US2016060863 |
| SEARCH | EP2990552 |
| SEARCH | EP3278967 |
| SEARCH | US2016059536 |
| SEARCH | US2016060068 |
| SEARCH | US2016060863 |
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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Nov 28, 2025
Refund of fees
Appeal
Nov 26, 2025
Nov 26, 2025
Nov 18, 2025
Nov 12, 2025
(Electronic) Receipt
Appeal
Nov 12, 2025
Nov 12, 2025
Withdrawal of an appeal
Appeal
Sep 18, 2025
Sep 12, 2025
(Electronic) Receipt
Appeal
Sep 12, 2025
Sep 12, 2025
Notice of appeal
Appeal
Jul 14, 2025
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Means of redress
OPPO
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Mar 10, 2023
Decision to grant a European patent
Search/Exam
Feb 23, 2023
(Electronic) Receipt
Search/Exam
Feb 23, 2023
English translation of the claims
Search/Exam
Feb 23, 2023
Filing of the translations of the claims
Search/Exam
Feb 23, 2023
French translation of claims
Search/Exam
Nov 8, 2022
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Intention to grant (signatures)
Search/Exam
Nov 8, 2022
Text intended for grant (clean copy)
Search/Exam
Nov 8, 2022
Sep 13, 2022
Sep 12, 2022
Annex to the communication
Search/Exam
Sep 12, 2022
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(Electronic) Receipt
Search/Exam
Sep 7, 2022
Letter accompanying subsequently filed items
Search/Exam
Sep 7, 2022
Aug 8, 2022
(Electronic) Receipt
Search/Exam
Aug 8, 2022
Letter accompanying subsequently filed items
Search/Exam
Jul 27, 2022
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(Electronic) Receipt
Search/Exam
Jul 7, 2022
Letter accompanying subsequently filed items
Search/Exam
Jul 7, 2022
Feb 25, 2022
Annex to the communication
Search/Exam
Feb 25, 2022
Communication from the Examining Division
Search/Exam
Aug 18, 2021
(Electronic) Receipt
Search/Exam
Aug 18, 2021
Letter concerning fees and payments
Search/Exam
May 12, 2021
(Electronic) Receipt
Search/Exam
May 12, 2021
Letter accompanying subsequently filed items
Search/Exam
May 12, 2021
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Annex to the communication
Search/Exam
Jan 12, 2021
Communication from the Examining Division
Search/Exam
Nov 30, 2020
Examination started
Search/Exam
Aug 25, 2020
Aug 18, 2020
Aug 4, 2020
(Electronic) Receipt
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Aug 4, 2020
(Electronic) Receipt
Search/Exam
Aug 4, 2020
Letter accompanying subsequently filed items
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Aug 4, 2020
Letter concerning fees and payments
Search/Exam
Aug 4, 2020
Reply to Written Opinion prepared by the EPO
Search/Exam
Feb 10, 2020
Jan 9, 2020
Notification of forthcoming publication
Search/Exam
Nov 11, 2019
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European search opinion
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Nov 11, 2019
European search report
Search/Exam
Nov 11, 2019
Information on Search Strategy
Search/Exam
Nov 11, 2019
Letter concerning the priority
Search/Exam
Nov 11, 2019
Priority document
Search/Exam
Oct 18, 2019
Search started
Search/Exam
Sep 25, 2019
Communication to designated inventor
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Sep 25, 2019
Communication to designated inventor
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Sep 25, 2019
Communication to designated inventor
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Sep 25, 2019
Communication to designated inventor
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Aug 2, 2019
Abstract
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Aug 2, 2019
Aug 2, 2019
Claims
Search/Exam
Aug 2, 2019
Description
Search/Exam
Aug 2, 2019
Designation of inventor
Search/Exam
Aug 2, 2019
Drawings
Appeal
Aug 2, 2019
Drawings
Search/Exam
Aug 2, 2019
Priority search results
Search/Exam
Aug 2, 2019
Request for grant of a European patent
Search/Exam