The weekly litigation news digest is live. Subscribe now
The patent EP4139035 was granted to Basf on Oct 25, 2023. The application was filed on Apr 22, 2021 under application number EP21719925A. 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 |
|---|---|---|---|
| TORGGLER & HOFMANN PATENTANWALTE | Jul 25, 2024 | TORGGLER & HOFMANN PATENTANWALTE INNSBRUCK | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | DE102015004121 |
| DESCRIPTION | EP3075704 |
| DESCRIPTION | WO2004091773 |
| DESCRIPTION | WO2015197181 |
| DESCRIPTION | WO2017072057 |
| DESCRIPTION | WO2019228798 |
| DESCRIPTION | WO2020002326 |
| INTERNATIONAL-SEARCH-REPORT | WO2004091773 |
| INTERNATIONAL-SEARCH-REPORT | WO2019228798 |
| OPPOSITION | EP1043367 |
| OPPOSITION | PL175410B |
| OPPOSITION | RU2173213 |
| OPPOSITION | WO2004091773 |
| OPPOSITION | WO2020002326 |
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
Get instant alerts for new documents
Oct 29, 2025
Oct 29, 2025
Oct 29, 2025
Oct 29, 2025
Oct 29, 2025
Sep 19, 2025
Sep 16, 2025
Sep 16, 2025
Sep 16, 2025
Sep 16, 2025
Sep 16, 2025
Sep 16, 2025
Sep 16, 2025
Sep 16, 2025
Sep 16, 2025
Sep 16, 2025
Sep 16, 2025
Sep 16, 2025
Sep 16, 2025
Sep 16, 2025
Sep 16, 2025
Sep 16, 2025
Sep 16, 2025
Sep 16, 2025
Sep 16, 2025
Sep 16, 2025
Sep 16, 2025
Sep 16, 2025
Sep 16, 2025
Sep 16, 2025
Sep 16, 2025
Sep 16, 2025
Sep 16, 2025
Sep 16, 2025
Sep 16, 2025
Sep 16, 2025
Sep 16, 2025
Sep 16, 2025
Sep 16, 2025
Sep 16, 2025
Sep 16, 2025
Sep 16, 2025
Sep 16, 2025
Sep 16, 2025
Sep 16, 2025
Mar 7, 2025
Mar 4, 2025
Mar 4, 2025
Mar 4, 2025
Dec 11, 2024
Dec 11, 2024
Dec 6, 2024
Dec 6, 2024
Dec 6, 2024
Dec 6, 2024
Dec 6, 2024
Dec 5, 2024
Dec 5, 2024
Dec 5, 2024
Dec 5, 2024
Dec 5, 2024
Dec 5, 2024
Dec 5, 2024
Dec 5, 2024
Dec 5, 2024
Dec 5, 2024
Dec 5, 2024
Dec 5, 2024
Dec 5, 2024
Dec 5, 2024
Dec 5, 2024
Dec 5, 2024
Dec 5, 2024
Dec 5, 2024
Dec 5, 2024
Dec 5, 2024
Dec 5, 2024
Dec 5, 2024
Dec 5, 2024
Dec 5, 2024
Dec 5, 2024
Dec 5, 2024
Dec 5, 2024
Dec 5, 2024
Dec 5, 2024
Dec 5, 2024
Dec 5, 2024
Dec 5, 2024
Dec 5, 2024
Dec 5, 2024
Dec 5, 2024
Dec 5, 2024
Dec 5, 2024
Dec 5, 2024
Dec 5, 2024
Dec 5, 2024
Dec 5, 2024
Dec 5, 2024
Dec 5, 2024
Sep 26, 2024
Sep 26, 2024
Sep 26, 2024
Sep 23, 2024
Sep 23, 2024
Sep 23, 2024
Sep 20, 2024
Sep 18, 2024
Sep 18, 2024
Sep 18, 2024
Aug 8, 2024
Aug 8, 2024
Jul 31, 2024
Jul 25, 2024
Jul 25, 2024
Jul 25, 2024
Jul 25, 2024
Jul 25, 2024
Jul 25, 2024
Jul 25, 2024
Jul 25, 2024
Jul 25, 2024
Jul 25, 2024
Jul 25, 2024
Jul 25, 2024
Nov 8, 2023
Sep 28, 2023
Decision to grant a European patent
Search/Exam
Sep 14, 2023
English translation of the claims
Search/Exam
Sep 14, 2023
Filing of the translations of the claims
Search/Exam
Sep 14, 2023
French translation of claims
Search/Exam
Sep 14, 2023
Letter concerning fees and payments
Search/Exam
Jun 22, 2023
Jun 22, 2023
Jun 13, 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)
Search/Exam
May 15, 2023
Mar 17, 2023
Examination started
Search/Exam
Feb 1, 2023
Nov 25, 2022
Priority search results copy provided by EPO
Search/Exam
Nov 23, 2022
(Electronic) Receipt
Search/Exam
Nov 23, 2022
Request for entry into the European phase
Search/Exam
Oct 31, 2022
Oct 31, 2022
Oct 31, 2022
Sep 2, 2022
Information on entry into European phase
Search/Exam
Mar 25, 2022
Mar 25, 2022
Mar 25, 2022
Mar 25, 2022
Mar 25, 2022
Mar 17, 2022
Notification of election of EPO
Search/Exam
Mar 3, 2022
Mar 1, 2022
Feb 22, 2022
Feb 22, 2022
PCT demand form
PCT2
Feb 22, 2022
Feb 22, 2022
Feb 22, 2022
Feb 22, 2022
Feb 22, 2022
Feb 22, 2022
Nov 15, 2021
Oct 28, 2021
Copy of the international search report
Search/Exam
Oct 28, 2021
Copy of the international search report
Search/Exam
Oct 28, 2021
Published international application - A1
Search/Exam
Apr 30, 2021
Apr 22, 2021
(Electronic) Receipt
PCTRO
Apr 22, 2021
Abstract
PCTRO
Apr 22, 2021
Annex
PCTRO
Apr 22, 2021
Claims
PCTRO
Apr 22, 2021
Description
PCTRO
Apr 22, 2021
Apr 22, 2021
Drawings
PCTRO
Apr 22, 2021
Apr 22, 2021