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The patent EP3071946 was granted to Cytiva Sweden on Apr 6, 2022. The application was filed on Nov 12, 2014 under application number EP14799136A. 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 |
|---|---|---|---|
| SARTORIUS STEDIM BIOTECH | Jan 4, 2023 | MULLER BORE & PARTNER PATENTANWALTE PARTG MBB | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| INTERNATIONAL-SEARCH-REPORT | US2005131650 |
| INTERNATIONAL-SEARCH-REPORT | US2013196343 |
| INTERNATIONAL-SEARCH-REPORT | WO2005029077 |
| INTERNATIONAL-SEARCH-REPORT | WO2011065913 |
| OPPOSITION | US2005131650 |
| OPPOSITION | US2013196343 |
| OPPOSITION | WO2005029077 |
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
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Dec 22, 2025
Dec 22, 2025
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Apr 29, 2025
(Electronic) Receipt
Appeal
Apr 29, 2025
Apr 29, 2025
Reply to appeal
Appeal
Jan 3, 2025
Dec 19, 2024
(Electronic) Receipt
Appeal
Dec 19, 2024
Dec 19, 2024
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Claims
Appeal
Dec 19, 2024
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(Electronic) Receipt
Appeal
Oct 18, 2024
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Notice of appeal
Appeal
Aug 21, 2024
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OPPO
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Authorisation
OPPO
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Mar 11, 2022
Decision to grant a European patent
Search/Exam
Feb 24, 2022
(Electronic) Receipt
Search/Exam
Feb 24, 2022
Filing of the translations of the claims
Search/Exam
Feb 24, 2022
French translation of claims
Search/Exam
Feb 24, 2022
German translation of the claims
Search/Exam
Nov 26, 2021
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Nov 26, 2021
Intention to grant (signatures)
Search/Exam
Nov 26, 2021
Text intended for grant (clean copy)
Search/Exam
Nov 26, 2021
Nov 17, 2021
Oct 22, 2021
(Electronic) Receipt
Search/Exam
Oct 22, 2021
Amended claims with annotations
Search/Exam
Oct 22, 2021
Amended claims with annotations
Search/Exam
Oct 22, 2021
Amended claims with annotations
Search/Exam
Oct 22, 2021
Amended claims with annotations
Search/Exam
Oct 22, 2021
Amended description with annotations
Search/Exam
Oct 22, 2021
Amended description with annotations
Search/Exam
Oct 22, 2021
Amended description with annotations
Search/Exam
Oct 22, 2021
Amended description with annotations
Search/Exam
Oct 22, 2021
Claims
Search/Exam
Oct 22, 2021
Claims
Search/Exam
Oct 22, 2021
Claims
Search/Exam
Oct 22, 2021
Claims
Search/Exam
Oct 22, 2021
Description
Search/Exam
Oct 22, 2021
Description
Search/Exam
Oct 22, 2021
Description
Search/Exam
Oct 22, 2021
Description
Search/Exam
Oct 22, 2021
Letter accompanying subsequently filed items
Search/Exam
Oct 22, 2021
Apr 29, 2021
Annex to the communication
Search/Exam
Apr 29, 2021
Summons to attend oral proceedings
Search/Exam
Jul 13, 2020
Jul 2, 2020
Annexes in respect of a client data request
Search/Exam
Jul 2, 2020
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Jun 23, 2020
Jun 4, 2020
Annexes in respect of a client data request
Search/Exam
Jun 4, 2020
General authorisation
Search/Exam
Jun 4, 2020
Apr 24, 2020
(Electronic) Receipt
Search/Exam
Apr 24, 2020
Amended claims with annotations
Search/Exam
Apr 24, 2020
Amended description with annotations
Search/Exam
Apr 24, 2020
Claims
Search/Exam
Apr 24, 2020
Description
Search/Exam
Apr 24, 2020
Letter accompanying subsequently filed items
Search/Exam
Apr 24, 2020
Mar 17, 2020
Feb 18, 2020
Dec 19, 2019
Annex to the communication
Search/Exam
Dec 19, 2019
Communication from the Examining Division
Search/Exam
Dec 11, 2019
Examination started
Search/Exam
Sep 16, 2019
Apr 9, 2019
Apr 4, 2019
Jan 9, 2017
(Electronic) Receipt
Search/Exam
Jan 9, 2017
Jan 9, 2017
Amended claims with annotations
Search/Exam
Jan 9, 2017
Jan 9, 2017
Amended description with annotations
Search/Exam
Jan 9, 2017
Amendments received before examination
Search/Exam
Jan 9, 2017
Letter accompanying subsequently filed items
Search/Exam
Aug 31, 2016
Jun 28, 2016
Jun 24, 2016
Communication to designated inventor
Search/Exam
Jun 7, 2016
Apr 27, 2016
(Electronic) Receipt
Search/Exam
Apr 27, 2016
Request for entry into the European phase
Search/Exam
Apr 1, 2016
Information on entry into European phase
Search/Exam
Jun 15, 2015
May 28, 2015
Copy of the international search report
Search/Exam
May 28, 2015
Published international application - A1
Search/Exam
Jan 30, 2015
Jan 30, 2015
Jan 30, 2015
Nov 12, 2014
(Electronic) Receipt
PCTRO
Nov 12, 2014
Abstract
PCTRO
Nov 12, 2014
Claims
PCTRO
Nov 12, 2014
Description
PCTRO
Nov 12, 2014
Drawings
PCTRO