The weekly litigation news digest is live. Subscribe now
The patent EP3931895 was granted to Speira on Jun 7, 2023. The application was filed on Feb 25, 2020 under application number EP20707247A. 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 |
|---|---|---|---|
| CONSTANTIA TEICH | Mar 6, 2024 | PATENTANWALTE BARGER | ADMISSIBLE |
| GRANGES | Mar 5, 2024 | VALEA | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| INTERNATIONAL-SEARCH-REPORT | CN106623426B |
| INTERNATIONAL-SEARCH-REPORT | KR101850645B |
| INTERNATIONAL-SEARCH-REPORT | US2004091773 |
| OPPOSITION | CN106602030 |
| OPPOSITION | CN106623426 |
| OPPOSITION | EP2892103 |
| OPPOSITION | JP2008270004 |
| OPPOSITION | JP2011192543 |
| OPPOSITION | JP2013026063 |
| OPPOSITION | JP2014150023 |
| OPPOSITION | JP2014205886 |
| OPPOSITION | US2004048161 |
| OPPOSITION | US2009098457 |
| OPPOSITION | US2014005886 |
| OPPOSITION | US2014065491 |
| OPPOSITION | US2014255788 |
| OPPOSITION | US2016087280 |
| OPPOSITION | US8715860 |
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
Dec 10, 2025
Dec 10, 2025
Dec 10, 2025
Dec 8, 2025
Dec 8, 2025
Dec 4, 2025
Dec 4, 2025
Dec 4, 2025
Dec 4, 2025
Dec 4, 2025
Dec 4, 2025
Dec 4, 2025
Dec 4, 2025
Dec 4, 2025
Dec 4, 2025
Dec 4, 2025
Dec 4, 2025
Dec 4, 2025
Dec 4, 2025
Dec 4, 2025
Dec 4, 2025
Dec 4, 2025
Dec 4, 2025
Dec 4, 2025
Dec 4, 2025
Dec 4, 2025
Dec 4, 2025
Dec 4, 2025
Dec 4, 2025
Dec 4, 2025
Dec 4, 2025
Dec 4, 2025
Dec 4, 2025
Dec 4, 2025
Dec 4, 2025
Dec 4, 2025
Dec 4, 2025
Dec 4, 2025
Dec 4, 2025
Dec 4, 2025
Dec 4, 2025
Dec 4, 2025
Dec 4, 2025
Dec 4, 2025
Dec 4, 2025
Dec 4, 2025
Dec 4, 2025
Dec 4, 2025
Dec 4, 2025
Dec 4, 2025
Dec 4, 2025
Dec 4, 2025
Dec 4, 2025
Dec 4, 2025
Dec 4, 2025
Dec 4, 2025
Dec 4, 2025
Dec 4, 2025
Dec 4, 2025
Dec 4, 2025
Dec 2, 2025
Dec 2, 2025
Dec 2, 2025
Dec 2, 2025
Dec 2, 2025
May 12, 2025
May 12, 2025
May 12, 2025
May 12, 2025
May 12, 2025
May 12, 2025
Apr 7, 2025
Apr 7, 2025
Apr 7, 2025
Apr 3, 2025
Apr 3, 2025
Mar 28, 2025
Mar 26, 2025
Mar 26, 2025
Mar 24, 2025
Mar 19, 2025
Mar 19, 2025
Mar 19, 2025
Feb 28, 2025
Feb 28, 2025
Feb 28, 2025
Feb 28, 2025
Feb 28, 2025
Feb 28, 2025
Dec 5, 2024
Dec 5, 2024
Dec 2, 2024
Dec 2, 2024
Nov 29, 2024
Nov 29, 2024
Nov 29, 2024
Nov 29, 2024
Nov 29, 2024
Nov 29, 2024
Nov 26, 2024
Nov 26, 2024
Nov 26, 2024
Jul 22, 2024
Jul 22, 2024
Jul 17, 2024
Jul 17, 2024
Jul 17, 2024
Jul 17, 2024
Jul 17, 2024
Jul 17, 2024
Jul 17, 2024
Mar 22, 2024
Mar 22, 2024
Mar 22, 2024
Mar 12, 2024
Mar 12, 2024
Mar 6, 2024
Mar 6, 2024
Mar 6, 2024
Mar 6, 2024
Mar 6, 2024
Mar 6, 2024
Mar 6, 2024
Mar 6, 2024
Mar 6, 2024
Mar 6, 2024
Mar 6, 2024
Mar 6, 2024
Mar 6, 2024
Mar 6, 2024
Mar 6, 2024
Mar 6, 2024
Mar 6, 2024
Mar 6, 2024
Mar 6, 2024
Mar 6, 2024
Mar 6, 2024
Mar 6, 2024
Mar 6, 2024
Mar 6, 2024
Mar 6, 2024
Mar 6, 2024
Mar 5, 2024
Mar 5, 2024
Mar 5, 2024
Mar 5, 2024
Mar 5, 2024
Mar 5, 2024
Mar 5, 2024
Mar 5, 2024
Mar 5, 2024
Mar 5, 2024
Mar 5, 2024
Mar 5, 2024
Mar 5, 2024
Mar 5, 2024
Mar 5, 2024
Mar 5, 2024
Mar 5, 2024
Mar 5, 2024
Mar 5, 2024
Jun 20, 2023
May 11, 2023
Decision to grant a European patent
Search/Exam
Apr 27, 2023
(Electronic) Receipt
Search/Exam
Apr 27, 2023
English translation of the claims
Search/Exam
Apr 27, 2023
Filing of the translations of the claims
Search/Exam
Apr 27, 2023
French translation of claims
Search/Exam
Apr 27, 2023
Letter accompanying subsequently filed items
Search/Exam
Apr 27, 2023
Dec 21, 2022
Dec 21, 2022
Dec 21, 2022
Dec 21, 2022
Intention to grant (signatures)
Search/Exam
Dec 21, 2022
Text intended for grant (clean copy)
Search/Exam
Dec 21, 2022
Nov 24, 2022
Examination started
Search/Exam
Jun 13, 2022
(Electronic) Receipt
Search/Exam
Jun 13, 2022
Jun 13, 2022
Letter accompanying subsequently filed items
Search/Exam
Jun 13, 2022
Jun 9, 2022
Apr 27, 2022
(Electronic) Receipt
Search/Exam
Apr 27, 2022
Apr 27, 2022
Amended claims with annotations
Search/Exam
Apr 27, 2022
Apr 27, 2022
Amended description with annotations
Search/Exam
Apr 27, 2022
Amendments received before examination
Search/Exam
Apr 27, 2022
Letter accompanying subsequently filed items
Search/Exam
Feb 22, 2022
Payment submission rejected
Search/Exam
Dec 8, 2021
Oct 20, 2021
Sep 7, 2021
Aug 30, 2021
Aug 30, 2021
Aug 25, 2021
(Electronic) Receipt
Search/Exam
Aug 25, 2021
Annex
Search/Exam
Aug 25, 2021
Aug 25, 2021
Aug 25, 2021
Request for entry into the European phase
Search/Exam
Aug 25, 2021
Jul 9, 2021
Information on entry into European phase
Search/Exam
Jun 2, 2021
Jun 2, 2021
Jun 2, 2021
Jun 2, 2021
Jun 2, 2021
Apr 30, 2021
Apr 30, 2021
Apr 30, 2021
Apr 30, 2021
Apr 30, 2021
Apr 30, 2021
Apr 30, 2021
Mar 3, 2021
Written opinion
PCT2
Mar 3, 2021
Mar 3, 2021
Feb 8, 2021
Feb 8, 2021
Annex
PCT2
Feb 8, 2021
Feb 8, 2021
Feb 8, 2021
Feb 8, 2021
Feb 8, 2021
Feb 8, 2021
Jan 29, 2021
Notification of election of EPO
Search/Exam
Jan 21, 2021
Jan 18, 2021
Jan 14, 2021
Dec 21, 2020
Dec 21, 2020
PCT demand form
PCT2
Dec 21, 2020
Dec 21, 2020
Sep 21, 2020
Sep 3, 2020
Copy of the international search report
Search/Exam
Sep 3, 2020
Copy of the international search report
Search/Exam
Sep 3, 2020
Published international application - A1
Search/Exam
May 19, 2020
ISR: cited documents
PCTISA
May 19, 2020
May 19, 2020
May 19, 2020
May 19, 2020
Mar 13, 2020
Mar 12, 2020
Mar 10, 2020
Mar 9, 2020
Feb 25, 2020
(Electronic) Receipt
PCTRO
Feb 25, 2020
Abstract
PCTRO
Feb 25, 2020
Claims
PCTRO
Feb 25, 2020
Description
PCTRO
Feb 25, 2020
Feb 25, 2020
Drawings
PCTRO
Feb 25, 2020