The weekly litigation news digest is live. Subscribe now
The patent EP3554581 was granted to Teva Pharmaceuticals on Mar 13, 2024. The application was filed on Dec 13, 2017 under application number EP17816751A. 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 |
|---|---|---|---|
| HOFFMANN EITLE | Dec 13, 2024 | VAN BOUWELEN | ADMISSIBLE |
| YPSOMED | Dec 13, 2024 | EUGSTER | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| INTERNATIONAL-SEARCH-REPORT | US2014078854 |
| INTERNATIONAL-SEARCH-REPORT | US2016271320 |
| INTERNATIONAL-SEARCH-REPORT | US5522503 |
| INTERNATIONAL-SEARCH-REPORT | US6216885 |
| OPPOSITION | EP2357013 |
| OPPOSITION | EP2965772 |
| OPPOSITION | EP3505201 |
| OPPOSITION | JP2013013581 |
| OPPOSITION | JP4316744B |
| OPPOSITION | JP4952890B |
| OPPOSITION | JPH11155948 |
| OPPOSITION | US2006011506 |
| OPPOSITION | US2955705 |
| OPPOSITION | US3305084 |
| OPPOSITION | US5522503 |
| OPPOSITION | US5611432 |
| OPPOSITION | US6216885 |
| OPPOSITION | WO2013033227 |
| OPPOSITION | WO2014096146 |
| OPPOSITION | WO2015004048 |
| OPPOSITION | WO2016179713 |
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
Nov 28, 2025
Nov 26, 2025
Nov 26, 2025
Nov 20, 2025
Nov 20, 2025
Nov 20, 2025
Jul 30, 2025
Jul 30, 2025
Jul 30, 2025
Jul 30, 2025
Jul 30, 2025
Jul 30, 2025
May 14, 2025
May 14, 2025
May 14, 2025
May 14, 2025
May 8, 2025
May 8, 2025
May 8, 2025
May 8, 2025
May 8, 2025
May 8, 2025
May 8, 2025
May 8, 2025
May 8, 2025
May 8, 2025
May 8, 2025
May 8, 2025
May 8, 2025
May 8, 2025
May 8, 2025
May 8, 2025
May 8, 2025
May 8, 2025
May 8, 2025
May 8, 2025
May 8, 2025
May 8, 2025
May 8, 2025
May 8, 2025
May 8, 2025
May 8, 2025
May 8, 2025
May 8, 2025
May 7, 2025
May 7, 2025
May 7, 2025
Jan 8, 2025
Jan 8, 2025
Jan 8, 2025
Dec 19, 2024
Dec 19, 2024
Dec 19, 2024
Dec 13, 2024
Dec 13, 2024
Dec 13, 2024
Dec 13, 2024
Dec 13, 2024
Dec 13, 2024
Dec 13, 2024
Dec 13, 2024
Dec 13, 2024
Dec 13, 2024
Dec 13, 2024
Dec 13, 2024
Dec 13, 2024
Dec 13, 2024
Dec 13, 2024
Dec 13, 2024
Dec 13, 2024
Dec 13, 2024
Dec 13, 2024
Dec 13, 2024
Dec 13, 2024
Dec 13, 2024
Dec 13, 2024
Dec 13, 2024
Dec 13, 2024
Dec 13, 2024
Dec 13, 2024
Dec 13, 2024
Dec 13, 2024
Dec 13, 2024
Dec 13, 2024
Dec 13, 2024
Dec 13, 2024
Dec 13, 2024
Mar 26, 2024
Feb 15, 2024
Decision to grant a European patent
Search/Exam
Feb 5, 2024
(Electronic) Receipt
Search/Exam
Feb 5, 2024
Filing of the translations of the claims
Search/Exam
Feb 5, 2024
French translation of claims
Search/Exam
Feb 5, 2024
German translation of the claims
Search/Exam
Feb 5, 2024
Letter accompanying subsequently filed items
Search/Exam
Sep 27, 2023
Sep 27, 2023
Sep 27, 2023
Sep 27, 2023
Intention to grant (signatures)
Search/Exam
Sep 27, 2023
Text intended for grant (clean copy)
Search/Exam
Sep 27, 2023
Apr 14, 2023
Mar 31, 2023
(Electronic) Receipt
Search/Exam
Mar 31, 2023
Enquiry as to the processing of the file
Search/Exam
Mar 31, 2023
Letter accompanying subsequently filed items
Search/Exam
Oct 15, 2021
Oct 8, 2021
Letter accompanying subsequently filed items
Search/Exam
Oct 8, 2021
Aug 16, 2021
Aug 13, 2021
Aug 5, 2021
Letter accompanying subsequently filed items
Search/Exam
Aug 5, 2021
Jul 12, 2021
(Electronic) Receipt
Search/Exam
Jul 12, 2021
Amended claims with annotations
Search/Exam
Jul 12, 2021
Claims
Search/Exam
Jul 12, 2021
Letter accompanying subsequently filed items
Search/Exam
Jul 12, 2021
Mar 3, 2021
Annex to the communication
Search/Exam
Mar 3, 2021
Communication from the Examining Division
Search/Exam
Feb 25, 2021
Examination started
Search/Exam
Jan 21, 2021
Jan 21, 2021
Jan 15, 2021
(Electronic) Receipt
Search/Exam
Jan 15, 2021
Letter accompanying subsequently filed items
Search/Exam
Jan 15, 2021
Jun 4, 2020
May 29, 2020
Jan 23, 2020
(Electronic) Receipt
Search/Exam
Jan 23, 2020
Jan 23, 2020
Amended claims with annotations
Search/Exam
Jan 23, 2020
Jan 23, 2020
Amended description with annotations
Search/Exam
Jan 23, 2020
Amendments received before examination
Search/Exam
Jan 23, 2020
Letter accompanying subsequently filed items
Search/Exam
Sep 25, 2019
Jul 23, 2019
Jul 19, 2019
Communication to designated inventor
Search/Exam
Jul 2, 2019
Jun 12, 2019
(Electronic) Receipt
Search/Exam
Jun 12, 2019
Request for entry into the European phase
Search/Exam
Apr 26, 2019
Information on entry into European phase
Search/Exam
Jul 17, 2018
Jun 21, 2018
Copy of the international search report
Search/Exam
Jun 21, 2018
Published international application - A1
Search/Exam
Feb 12, 2018
ISR: cited documents
PCTISA
Feb 9, 2018
Feb 9, 2018
Feb 9, 2018
Jan 5, 2018
Jan 4, 2018
Dec 22, 2017
Dec 13, 2017
(Electronic) Receipt
PCTRO
Dec 13, 2017
Abstract
PCTRO
Dec 13, 2017
Claims
PCTRO
Dec 13, 2017
Description
PCTRO
Dec 13, 2017
Dec 13, 2017
Drawings
PCTRO
Dec 13, 2017