The weekly litigation news digest is live. Subscribe now
The patent EP4037666 was granted to Ruminant Biotech on May 1, 2024. The application was filed on Dec 7, 2021 under application number EP21835439A. 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 |
|---|---|---|---|
| WRAYS SOLUTIONS | Jan 31, 2025 | AERA | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| EXAMINATION | EP0164241 |
| INTERNATIONAL-SEARCH-REPORT | EP2767289 |
| INTERNATIONAL-SEARCH-REPORT | GB2353707 |
| INTERNATIONAL-SEARCH-REPORT | WO2020113279 |
| INTERNATIONAL-SEARCH-REPORT | WO2020245303 |
| INTERNATIONAL-SEARCH-REPORT | WO9519763 |
| OPPOSITION | AU555998B |
| OPPOSITION | AU558009B |
| OPPOSITION | EP0164241 |
| OPPOSITION | US5198222 |
| OPPOSITION | WO2019145345 |
| OPPOSITION | WO9614062 |
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
Oct 29, 2025
Oct 7, 2025
Oct 1, 2025
Oct 1, 2025
Oct 1, 2025
Sep 12, 2025
Sep 8, 2025
Sep 8, 2025
Sep 8, 2025
Jun 25, 2025
Jun 18, 2025
Jun 18, 2025
Jun 18, 2025
Jun 18, 2025
Jun 18, 2025
Jun 18, 2025
Jun 18, 2025
Jun 18, 2025
Jun 18, 2025
Jun 18, 2025
Jun 18, 2025
Jun 18, 2025
Jun 18, 2025
Jun 18, 2025
Jun 18, 2025
Jun 18, 2025
Jun 18, 2025
Jun 18, 2025
Jun 18, 2025
Jun 18, 2025
Jun 18, 2025
Jun 18, 2025
Jun 18, 2025
Jun 18, 2025
Jun 18, 2025
Jun 18, 2025
Jun 18, 2025
Jun 18, 2025
Jun 18, 2025
Jun 18, 2025
Jun 18, 2025
Jun 18, 2025
Jun 18, 2025
Jun 18, 2025
Jun 18, 2025
Jun 18, 2025
Jun 18, 2025
Jun 18, 2025
Jun 18, 2025
Jun 18, 2025
Jun 18, 2025
Jun 18, 2025
Jun 18, 2025
Jun 18, 2025
Jun 18, 2025
Jun 18, 2025
Jun 18, 2025
Jun 18, 2025
Jun 18, 2025
Jun 18, 2025
Jun 18, 2025
Jun 18, 2025
Jun 18, 2025
Jun 18, 2025
Jun 18, 2025
Jun 18, 2025
Jun 18, 2025
Jun 18, 2025
Jun 18, 2025
Jun 18, 2025
Jun 18, 2025
Feb 18, 2025
Feb 18, 2025
Feb 6, 2025
Jan 31, 2025
Jan 31, 2025
Jan 31, 2025
Jan 31, 2025
Jan 31, 2025
Jan 31, 2025
Jan 31, 2025
Jan 31, 2025
Jan 31, 2025
Jan 31, 2025
Jan 31, 2025
Jan 31, 2025
Jan 31, 2025
Jan 31, 2025
Jan 31, 2025
Jan 31, 2025
Jan 31, 2025
Jan 31, 2025
Jan 31, 2025
Jan 31, 2025
May 15, 2024
Apr 5, 2024
Decision to grant a European patent
Search/Exam
Mar 25, 2024
(Electronic) Receipt
Search/Exam
Mar 25, 2024
Filing of the translations of the claims
Search/Exam
Mar 25, 2024
French translation of claims
Search/Exam
Mar 25, 2024
German translation of the claims
Search/Exam
Mar 25, 2024
Letter accompanying subsequently filed items
Search/Exam
Mar 19, 2024
Mar 19, 2024
Mar 19, 2024
Mar 19, 2024
Intention to grant (signatures)
Search/Exam
Mar 19, 2024
Text intended for grant (clean copy)
Search/Exam
Mar 19, 2024
Jan 12, 2024
(Electronic) Receipt
Search/Exam
Jan 12, 2024
Amended description with annotations
Search/Exam
Jan 12, 2024
Description
Search/Exam
Jan 12, 2024
Letter accompanying subsequently filed items
Search/Exam
Jan 12, 2024
Sep 27, 2023
Annex to the communication
Search/Exam
Sep 27, 2023
Communication from the Examining Division
Search/Exam
Aug 9, 2023
(Electronic) Receipt
Search/Exam
Aug 9, 2023
Amended claims with annotations
Search/Exam
Aug 9, 2023
Claims
Search/Exam
Aug 9, 2023
Letter accompanying subsequently filed items
Search/Exam
Aug 9, 2023
Jun 26, 2023
Apr 28, 2023
Annex to the communication
Search/Exam
Apr 28, 2023
Communication from the Examining Division
Search/Exam
Apr 24, 2023
Examination started
Search/Exam
Mar 22, 2023
(Electronic) Receipt
Search/Exam
Mar 22, 2023
Letter concerning search matters
Search/Exam
Mar 22, 2023
Letter concerning search matters
Search/Exam
Mar 22, 2023
Priority search results
Search/Exam
Mar 22, 2023
Priority search results
Search/Exam
Mar 22, 2023
Feb 15, 2023
Jan 31, 2023
Refund of fees
Search/Exam
Jan 31, 2023
Refund of fees
Search/Exam
Jan 31, 2023
Refund of fees
Search/Exam
Jan 31, 2023
Refund of fees
Search/Exam
Jan 31, 2023
Refund of fees
Search/Exam
Jan 31, 2023
Refund of fees
Search/Exam
Jan 23, 2023
(Electronic) Receipt
Search/Exam
Jan 23, 2023
Letter accompanying subsequently filed items
Search/Exam
Jan 4, 2023
Jan 3, 2023
(Electronic) Receipt
Search/Exam
Jan 3, 2023
Jan 3, 2023
Amended claims with annotations
Search/Exam
Jan 3, 2023
Amendments received before examination
Search/Exam
Jan 3, 2023
Letter accompanying subsequently filed items
Search/Exam
Dec 19, 2022
(Electronic) Receipt
Search/Exam
Dec 19, 2022
Letter concerning fees and payments
Search/Exam
Jul 27, 2022
(Electronic) Receipt
Search/Exam
Jul 27, 2022
Letter accompanying subsequently filed items
Search/Exam
Jul 15, 2022
Jul 15, 2022
Jul 13, 2022
Jul 7, 2022
(Electronic) Receipt
Search/Exam
Jul 7, 2022
Letter accompanying subsequently filed items
Search/Exam
Jul 7, 2022
Jul 5, 2022
Jul 5, 2022
Jul 5, 2022
Jun 28, 2022
Jun 16, 2022
Copy of the international search report
Search/Exam
Jun 16, 2022
Published international application - A1
Search/Exam
Mar 8, 2022
Abstract
PCTISA
Mar 8, 2022
Mar 8, 2022
Feb 28, 2022
ISR: cited documents
PCTISA
Feb 28, 2022
Feb 28, 2022
Feb 28, 2022
Feb 17, 2022
Feb 11, 2022
Feb 8, 2022
Jan 28, 2022
(Electronic) Receipt
Search/Exam
Jan 28, 2022
Annex
Search/Exam
Jan 28, 2022
Annex
Search/Exam
Jan 28, 2022
Annex
Search/Exam
Jan 28, 2022
Request for entry into the European phase
Search/Exam
Jan 14, 2022
Dec 28, 2021
Abstract
PCTISA
Dec 28, 2021
Claims
PCTISA
Dec 28, 2021
Description
PCTISA
Dec 28, 2021
Drawings
PCTISA
Dec 28, 2021
Dec 28, 2021