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The patent EP3813912 was granted to Nuvoair on Jan 19, 2022. The application was filed on Jun 25, 2020 under application number EP20734927A. The patent is currently recorded with a legal status of "Revoked".

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 |
|---|---|---|---|
| APTAR RADOLFZELL | Oct 11, 2022 | WITTE | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| INTERNATIONAL-SEARCH-REPORT | US2016144141 |
| INTERNATIONAL-SEARCH-REPORT | US2016325058 |
| INTERNATIONAL-SEARCH-REPORT | WO2017178865 |
| OPPOSITION | EP3782682 |
| OPPOSITION | US2016144141 |
| OPPOSITION | US2016325058 |
| OPPOSITION | US6752145 |
| OPPOSITION | WO2017178865 |
| OPPOSITION | WO2017205824 |
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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Jul 1, 2025
Refund of fees
Search/Exam
Jun 27, 2025
Jun 27, 2025
Jun 24, 2025
Jun 23, 2025
(Electronic) Receipt
Appeal
Jun 23, 2025
Jun 23, 2025
Withdrawal of an appeal
Appeal
Feb 19, 2025
Feb 14, 2025
(Electronic) Receipt
Appeal
Feb 14, 2025
Feb 14, 2025
Reply to appeal
Appeal
Oct 15, 2024
Oct 10, 2024
(Electronic) Receipt
Appeal
Oct 10, 2024
Oct 10, 2024
Oct 10, 2024
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Oct 10, 2024
Aug 16, 2024
Aug 16, 2024
Aug 9, 2024
(Electronic) Receipt
Appeal
Aug 9, 2024
Aug 9, 2024
Notice of appeal
Appeal
Aug 1, 2024
Aug 1, 2024
Aug 1, 2024
Jun 10, 2024
Jun 10, 2024
Jun 10, 2024
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Means of redress
OPPO
Jun 10, 2024
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Authorisation
OPPO
Feb 5, 2024
Feb 5, 2024
Jan 23, 2024
Dec 19, 2023
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Jul 19, 2023
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Mar 28, 2022
Document concerning representation
Search/Exam
Feb 1, 2022
Jan 17, 2022
Dec 23, 2021
Decision to grant a European patent
Search/Exam
Dec 14, 2021
Nov 8, 2021
(Electronic) Receipt
Search/Exam
Nov 8, 2021
Filing of the translations of the claims
Search/Exam
Nov 8, 2021
French translation of claims
Search/Exam
Nov 8, 2021
German translation of the claims
Search/Exam
Nov 8, 2021
Letter accompanying subsequently filed items
Search/Exam
Jul 2, 2021
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Intention to grant (signatures)
Search/Exam
Jul 2, 2021
Text intended for grant (clean copy)
Search/Exam
Jul 2, 2021
May 7, 2021
(Electronic) Receipt
Search/Exam
May 7, 2021
Amended claims with annotations
Search/Exam
May 7, 2021
Amended description with annotations
Search/Exam
May 7, 2021
Claims
Search/Exam
May 7, 2021
Description
Search/Exam
May 7, 2021
Letter accompanying subsequently filed items
Search/Exam
May 7, 2021
Apr 8, 2021
Mar 16, 2021
Annex to the communication
Search/Exam
Mar 16, 2021
Communication from the Examining Division
Search/Exam
Mar 10, 2021
Examination started
Search/Exam
Feb 8, 2021
Communication to designated inventor
Search/Exam
Feb 8, 2021
Communication to designated inventor
Search/Exam
Feb 8, 2021
Communication to designated inventor
Search/Exam
Feb 8, 2021
Feb 3, 2021
Jan 27, 2021
(Electronic) Receipt
Search/Exam
Jan 27, 2021
Jan 27, 2021
Amended claims with annotations
Search/Exam
Jan 27, 2021
Jan 27, 2021
Amended description with annotations
Search/Exam
Jan 27, 2021
Amendments received before examination
Search/Exam
Jan 27, 2021
Request for entry into the European phase
Search/Exam
Jan 25, 2021
Jan 7, 2021
Jan 7, 2021
Copy of the international search report
Search/Exam
Jan 7, 2021
Published international application - A1
Search/Exam
Oct 1, 2020
Oct 1, 2020
Sep 28, 2020
ISR: cited documents
PCTISA
Sep 28, 2020
Sep 28, 2020
Sep 28, 2020
Jul 21, 2020
Jul 13, 2020
(Electronic) Receipt
PCTRO
Jul 13, 2020
Jul 13, 2020
Jul 10, 2020
Jul 9, 2020
Jul 9, 2020
Jul 6, 2020
Jun 25, 2020
(Electronic) Receipt
PCTRO
Jun 25, 2020
Abstract
PCTRO
Jun 25, 2020
Claims
PCTRO
Jun 25, 2020
Description
PCTRO
Jun 25, 2020
Jun 25, 2020
Drawings
PCTRO
Jun 25, 2020