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The patent EP3537883 was granted to Humboldt on Dec 2, 2020. The application was filed on Jan 9, 2018 under application number EP18702347A. 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 |
|---|---|---|---|
| FRONTMATEC AIRA | Sep 2, 2021 | PONTI & PARTNERS | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| EXAMINATION | WO2015168511 |
| INTERNATIONAL-SEARCH-REPORT | DE102013104585 |
| INTERNATIONAL-SEARCH-REPORT | WO0230208 |
| INTERNATIONAL-SEARCH-REPORT | WO2006135262 |
| INTERNATIONAL-SEARCH-REPORT | WO2015168511 |
| OPPOSITION | DE102013104585 |
| OPPOSITION | DK167044B |
| OPPOSITION | DK172769B |
| OPPOSITION | EP0392874 |
| OPPOSITION | EP2057901 |
| OPPOSITION | US5655960 |
| OPPOSITION | WO0230208 |
| OPPOSITION | WO03028469 |
| OPPOSITION | WO2006135262 |
| OPPOSITION | WO2015168511 |
| OPPOSITION | WO9730594 |
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
(Electronic) Receipt
Appeal
Dec 22, 2025
Dec 22, 2025
Nov 26, 2025
Nov 24, 2025
(Electronic) Receipt
Appeal
Nov 24, 2025
Nov 24, 2025
Oct 28, 2025
Oct 28, 2025
Oct 28, 2025
Oct 28, 2025
Oct 23, 2025
Oct 22, 2025
Oct 17, 2025
(Electronic) Receipt
Appeal
Oct 17, 2025
Oct 17, 2025
Sep 22, 2025
Mar 7, 2025
Mar 4, 2025
(Electronic) Receipt
Appeal
Mar 4, 2025
Mar 4, 2025
Mar 4, 2025
Mar 4, 2025
Mar 4, 2025
Reply to appeal
Appeal
Nov 4, 2024
Oct 28, 2024
(Electronic) Receipt
Appeal
Oct 28, 2024
Oct 28, 2024
Oct 28, 2024
Oct 28, 2024
Sep 2, 2024
Sep 2, 2024
Aug 27, 2024
(Electronic) Receipt
Appeal
Aug 27, 2024
Aug 27, 2024
Notice of appeal
Appeal
Aug 26, 2024
Aug 21, 2024
Aug 21, 2024
Aug 20, 2024
Aug 20, 2024
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Means of redress
OPPO
Jun 28, 2024
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Jun 28, 2024
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Non-scannable object
Search/Exam
Jan 19, 2024
Jan 19, 2024
Jan 18, 2024
Jan 18, 2024
Jan 18, 2024
Oct 6, 2023
Oct 4, 2023
Sep 27, 2023
Annexes in respect of a client data request
Search/Exam
Sep 27, 2023
Annexes in respect of a client data request
Search/Exam
Sep 27, 2023
Letter accompanying subsequently filed items
Search/Exam
Sep 27, 2023
Sep 13, 2023
Sep 8, 2023
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Mar 28, 2022
Document concerning representation
Search/Exam
Dec 1, 2021
Dec 1, 2021
Nov 22, 2021
Nov 22, 2021
Nov 22, 2021
Nov 22, 2021
Nov 22, 2021
Nov 22, 2021
Nov 22, 2021
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Sep 15, 2021
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Dec 14, 2020
Nov 5, 2020
Decision to grant a European patent
Search/Exam
Nov 4, 2020
Intention to grant (signatures)
Search/Exam
Oct 27, 2020
Oct 27, 2020
Oct 27, 2020
Text intended for grant (clean copy)
Search/Exam
Oct 27, 2020
May 15, 2020
May 15, 2020
May 12, 2020
(Electronic) Receipt
Search/Exam
May 12, 2020
Authorisation
Search/Exam
May 12, 2020
Claims
Search/Exam
May 12, 2020
French translation of claims
Search/Exam
May 12, 2020
German translation of the claims
Search/Exam
May 12, 2020
Letter accompanying subsequently filed items
Search/Exam
May 12, 2020
Apr 30, 2020
Apr 24, 2020
Jan 3, 2020
Jan 3, 2020
Jan 3, 2020
Intention to grant (signatures)
Search/Exam
Jan 3, 2020
Text intended for grant (clean copy)
Search/Exam
Jan 3, 2020
Oct 31, 2019
Examination started
Search/Exam
Aug 21, 2019
Jul 30, 2019
Jul 3, 2019
(Electronic) Receipt
Search/Exam
Jul 3, 2019
Letter accompanying subsequently filed items
Search/Exam
Jul 3, 2019
Matter concerning the application
Search/Exam
Jun 27, 2019
Jun 26, 2019
Refund of fees
Search/Exam
Jun 26, 2019
Refund of fees
Search/Exam
Jun 26, 2019
Refund of fees
Search/Exam
Jun 25, 2019
Communication to designated inventor
Search/Exam
Jun 25, 2019
Communication to designated inventor
Search/Exam
Jun 25, 2019
Communication to designated inventor
Search/Exam
Jun 25, 2019
Jun 19, 2019
Priority search results copy provided by EPO
Search/Exam
Jun 14, 2019
(Electronic) Receipt
Search/Exam
Jun 14, 2019
Letter accompanying subsequently filed items
Search/Exam
Jun 14, 2019
Matter concerning the application
Search/Exam
May 24, 2019
Information on entry into European phase
Search/Exam
May 20, 2019
(Electronic) Receipt
Search/Exam
May 20, 2019
Request for entry into the European phase
Search/Exam
Aug 13, 2018
Jul 19, 2018
Copy of the international search report
Search/Exam
Jul 19, 2018
Published international application - A1
Search/Exam
May 24, 2018
ISR: cited documents
PCTISA
May 23, 2018
May 23, 2018
May 23, 2018
May 23, 2018
Feb 13, 2018
Feb 6, 2018
Feb 6, 2018
Feb 6, 2018
Jan 9, 2018
Abstract
PCTISA
Jan 9, 2018
Claims
PCTISA
Jan 9, 2018
Description
PCTISA
Jan 9, 2018
Drawings
PCTISA