The weekly litigation news digest is live. Subscribe now
The patent EP3727100 was granted to BWT on Feb 7, 2024. The application was filed on Jul 17, 2018 under application number EP18745857A. 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 |
|---|---|---|---|
| BRITA | Nov 4, 2024 | KEIL & SCHAAFHAUSEN PATENTANWALTE PARTGMBB | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | EP1527720 |
| INTERNATIONAL-SEARCH-REPORT | CN107374345 |
| INTERNATIONAL-SEARCH-REPORT | DE202007010955U |
| INTERNATIONAL-SEARCH-REPORT | DE60030455T |
| INTERNATIONAL-SEARCH-REPORT | EP1028090 |
| INTERNATIONAL-SEARCH-REPORT | US2004134932 |
| INTERNATIONAL-SEARCH-REPORT | US2009014366 |
| OPPOSITION | CN107374345 |
| OPPOSITION | CN201379420Y |
| OPPOSITION | DE202007010955U |
| OPPOSITION | DE202009011966U |
| OPPOSITION | DE60030455T |
| OPPOSITION | DE8810770U |
| OPPOSITION | EP1028090 |
| OPPOSITION | EP1915930 |
| OPPOSITION | JP5862859B |
| OPPOSITION | US3561506 |
| OPPOSITION | US6202541 |
| OTHER | CN107374345 |
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
Jan 5, 2026
Dec 23, 2025
Dec 18, 2025
Dec 18, 2025
Dec 18, 2025
Dec 18, 2025
Dec 18, 2025
Dec 18, 2025
Dec 8, 2025
Dec 8, 2025
Dec 1, 2025
Dec 1, 2025
Dec 1, 2025
Dec 1, 2025
Dec 1, 2025
Dec 1, 2025
Nov 27, 2025
Nov 27, 2025
Nov 27, 2025
Jun 27, 2025
Jun 27, 2025
Jun 27, 2025
Jun 27, 2025
Jun 27, 2025
Mar 27, 2025
Mar 18, 2025
Mar 18, 2025
Mar 18, 2025
Mar 18, 2025
Mar 18, 2025
Mar 18, 2025
Mar 18, 2025
Nov 19, 2024
Nov 19, 2024
Nov 12, 2024
Nov 4, 2024
Nov 4, 2024
Nov 4, 2024
Nov 4, 2024
Nov 4, 2024
Nov 4, 2024
Nov 4, 2024
Nov 4, 2024
Nov 4, 2024
Nov 4, 2024
Nov 4, 2024
Nov 4, 2024
Nov 4, 2024
Nov 4, 2024
Nov 4, 2024
Nov 4, 2024
Nov 4, 2024
Nov 4, 2024
Nov 4, 2024
Nov 4, 2024
Nov 4, 2024
Nov 4, 2024
Feb 20, 2024
Jan 11, 2024
Decision to grant a European patent
Search/Exam
Jan 8, 2024
Dec 22, 2023
(Electronic) Receipt
Search/Exam
Dec 22, 2023
Annexes in respect of a client data request
Search/Exam
Dec 22, 2023
Annexes in respect of a client data request
Search/Exam
Dec 22, 2023
Letter accompanying subsequently filed items
Search/Exam
Dec 22, 2023
Dec 21, 2023
(Electronic) Receipt
Search/Exam
Dec 21, 2023
(Electronic) Receipt
Search/Exam
Dec 21, 2023
Annexes in respect of a client data request
Search/Exam
Dec 21, 2023
Annexes in respect of a client data request
Search/Exam
Dec 21, 2023
English translation of the claims
Search/Exam
Dec 21, 2023
French translation of claims
Search/Exam
Dec 21, 2023
Letter accompanying subsequently filed items
Search/Exam
Dec 21, 2023
Letter accompanying subsequently filed items
Search/Exam
Dec 21, 2023
Nov 21, 2023
Nov 21, 2023
Nov 21, 2023
Nov 21, 2023
Intention to grant (signatures)
Search/Exam
Nov 21, 2023
Text intended for grant (clean copy)
Search/Exam
Nov 21, 2023
May 24, 2022
May 19, 2022
(Electronic) Receipt
Search/Exam
May 19, 2022
Letter accompanying subsequently filed items
Search/Exam
May 19, 2022
Observations by third parties
Search/Exam
May 19, 2022
Patent document filed by a Third party
Search/Exam
Dec 2, 2021
(Electronic) Receipt
Search/Exam
Dec 2, 2021
Amended claims with annotations
Search/Exam
Dec 2, 2021
Amended description with annotations
Search/Exam
Dec 2, 2021
Claims
Search/Exam
Dec 2, 2021
Description
Search/Exam
Dec 2, 2021
Letter accompanying subsequently filed items
Search/Exam
Dec 2, 2021
Sep 1, 2021
Annex to the communication
Search/Exam
Sep 1, 2021
Communication from the Examining Division
Search/Exam
Aug 24, 2021
Examination started
Search/Exam
Apr 27, 2021
(Electronic) Receipt
Search/Exam
Apr 27, 2021
Priority search results
Search/Exam
Apr 27, 2021
Apr 21, 2021
Mar 3, 2021
(Electronic) Receipt
Search/Exam
Mar 3, 2021
Mar 3, 2021
Amended claims with annotations
Search/Exam
Mar 3, 2021
Mar 3, 2021
Amended description with annotations
Search/Exam
Mar 3, 2021
Amendments received before examination
Search/Exam
Mar 3, 2021
Letter accompanying subsequently filed items
Search/Exam
Sep 30, 2020
Sep 4, 2020
Aug 7, 2020
Notice on debiting of fees
Search/Exam
Jul 24, 2020
Communication to designated inventor
Search/Exam
Jul 6, 2020
Jun 19, 2020
(Electronic) Receipt
Search/Exam
Jun 19, 2020
Request for entry into the European phase
Search/Exam
May 4, 2020
Information on entry into European phase
Search/Exam
Sep 11, 2019
Sep 11, 2019
Notification of the recording of a change
Search/Exam
Jul 18, 2019
Jun 27, 2019
Copy of the international search report
Search/Exam
Jun 27, 2019
Copy of the international search report
Search/Exam
Jun 27, 2019
Published international application - A1
Search/Exam
Oct 5, 2018
Oct 5, 2018
Oct 5, 2018
Aug 9, 2018
Jul 20, 2018
Jul 17, 2018
(Electronic) Receipt
PCTRO
Jul 17, 2018
Abstract
PCTRO
Jul 17, 2018
Claims
PCTRO
Jul 17, 2018
Description
PCTRO
Jul 17, 2018
Jul 17, 2018
Drawings
PCTRO
Jul 17, 2018