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The patent EP3692101 was granted to Alfa Instruments on Jan 12, 2022. The application was originally filed on Oct 8, 2018 under application number EP18780149A. 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 |
|---|---|---|---|
| DORC DUTCH OPHTHALMIC RESEARCH CENTER | Oct 11, 2022 | VO | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | EP2532370 |
| DESCRIPTION | US5132439 |
| DESCRIPTION | US5273906 |
| DESCRIPTION | WO2006062233 |
| DESCRIPTION | WO2016189475 |
| INTERNATIONAL-SEARCH-REPORT | JP2006265438 |
| INTERNATIONAL-SEARCH-REPORT | US5132439 |
| INTERNATIONAL-SEARCH-REPORT | US5273906 |
| INTERNATIONAL-SEARCH-REPORT | WO2006062233 |
| INTERNATIONAL-SEARCH-REPORT | WO2016189475 |
| OPPOSITION | JPH0894826 |
| OPPOSITION | US2014065526 |
| OPPOSITION | US5132439 |
| OPPOSITION | WO2006062233 |
| OPPOSITION | WO2011122947 |
| OPPOSITION | WO2012135432 |
| OPPOSITION | WO2016189475 |
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 18, 2025
Dec 18, 2025
Sep 10, 2025
Sep 3, 2025
(Electronic) Receipt
Appeal
Sep 3, 2025
Sep 3, 2025
Aug 11, 2025
Aug 11, 2025
Aug 5, 2025
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Apr 29, 2025
Apr 23, 2025
(Electronic) Receipt
Appeal
Apr 23, 2025
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Jan 13, 2025
(Electronic) Receipt
Appeal
Jan 13, 2025
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Claims
Appeal
Jan 13, 2025
Claims
Appeal
Jan 13, 2025
Claims
Appeal
Jan 13, 2025
Claims
Appeal
Jan 13, 2025
Claims
Appeal
Jan 13, 2025
Jan 13, 2025
Reply to appeal
Appeal
Sep 13, 2024
Sep 10, 2024
Sep 9, 2024
(Electronic) Receipt
Appeal
Sep 9, 2024
Sep 9, 2024
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Jul 15, 2024
Jul 15, 2024
Jul 9, 2024
(Electronic) Receipt
Appeal
Jul 9, 2024
Jul 9, 2024
Notice of appeal
Appeal
May 10, 2024
May 10, 2024
May 10, 2024
May 10, 2024
May 10, 2024
May 10, 2024
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Means of redress
OPPO
May 10, 2024
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Jan 25, 2022
Dec 16, 2021
Decision to grant a European patent
Search/Exam
Dec 1, 2021
(Electronic) Receipt
Search/Exam
Dec 1, 2021
French translation of claims
Search/Exam
Dec 1, 2021
German translation of the claims
Search/Exam
Dec 1, 2021
Letter accompanying subsequently filed items
Search/Exam
Oct 7, 2021
Oct 7, 2021
Oct 7, 2021
Intention to grant (signatures)
Search/Exam
Oct 7, 2021
Text intended for grant (clean copy)
Search/Exam
Oct 7, 2021
Jul 8, 2021
(Electronic) Receipt
Search/Exam
Jul 8, 2021
Amended claims with annotations
Search/Exam
Jul 8, 2021
Amended description with annotations
Search/Exam
Jul 8, 2021
Claims
Search/Exam
Jul 8, 2021
Description
Search/Exam
Jul 8, 2021
Letter accompanying subsequently filed items
Search/Exam
Jul 8, 2021
Mar 25, 2021
Annex to the communication
Search/Exam
Mar 25, 2021
Communication from the Examining Division
Search/Exam
Mar 18, 2021
Examination started
Search/Exam
Nov 10, 2020
(Electronic) Receipt
Search/Exam
Nov 10, 2020
Nov 10, 2020
Amended claims with annotations
Search/Exam
Nov 10, 2020
Amendments received before examination
Search/Exam
Nov 10, 2020
Letter accompanying subsequently filed items
Search/Exam
Nov 10, 2020
Nov 10, 2020
Jul 15, 2020
May 13, 2020
May 11, 2020
Communication to designated inventor
Search/Exam
May 6, 2020
Priority search results copy provided by EPO
Search/Exam
Apr 23, 2020
Apr 2, 2020
Information regarding early processing
Search/Exam
Mar 20, 2020
(Electronic) Receipt
Search/Exam
Mar 20, 2020
Request for entry into the European phase
Search/Exam
Feb 14, 2020
Information on entry into European phase
Search/Exam
Jun 19, 2019
Jun 19, 2019
Notification of the recording of a change
Search/Exam
May 10, 2019
Apr 11, 2019
Copy of the international search report
Search/Exam
Apr 11, 2019
Published international application - A1
Search/Exam
Dec 11, 2018
Dec 11, 2018
Dec 11, 2018
Oct 16, 2018
Oct 8, 2018
(Electronic) Receipt
PCTRO
Oct 8, 2018
Abstract
PCTRO
Oct 8, 2018
Claims
PCTRO
Oct 8, 2018
Description
PCTRO
Oct 8, 2018
Oct 8, 2018
Drawings
PCTRO
Oct 8, 2018
Oct 8, 2018