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The patent EP4185455 was granted to Carl Zeiss on Mar 6, 2024. The application was filed on Jul 23, 2021 under application number EP21746753A. 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 |
|---|---|---|---|
| ESSILOR | Dec 6, 2024 | PLASSERAUD | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | CN106772713 |
| DESCRIPTION | CN205539780U |
| DESCRIPTION | CN210534467U |
| DESCRIPTION | DE19848591 |
| DESCRIPTION | EP1392613 |
| DESCRIPTION | EP1433814 |
| DESCRIPTION | EP1561571 |
| DESCRIPTION | EP1602479 |
| DESCRIPTION | EP2437084 |
| DESCRIPTION | EP2578649 |
| DESCRIPTION | EP2801846 |
| DESCRIPTION | JP2010139964 |
| DESCRIPTION | KR200375582Y |
| DESCRIPTION | US2002111390 |
| DESCRIPTION | US2005171231 |
| DESCRIPTION | US2009189303 |
| DESCRIPTION | US2015044482 |
| DESCRIPTION | US5454886 |
| DESCRIPTION | WO03058300 |
| DESCRIPTION | WO2019082001 |
| DESCRIPTION | WO2020138469 |
| DESCRIPTION | WO9417116 |
| DESCRIPTION | WO9417166 |
| INTERNATIONAL-SEARCH-REPORT | CN108383397 |
| INTERNATIONAL-SEARCH-REPORT | US2008241520 |
| INTERNATIONAL-SEARCH-REPORT | US2018036995 |
| INTERNATIONAL-SEARCH-REPORT | WO2020138469 |
| OPPOSITION | CN108383397 |
| OPPOSITION | CN205539780U |
| OPPOSITION | CN213465591U |
| OPPOSITION | JPH11101901 |
| OPPOSITION | US2011098724 |
| OPPOSITION | US2018036995 |
| OPPOSITION | WO2007101055 |
| OPPOSITION | WO2022016428 |
| OPPOSITION | WO2022099592 |
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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Aug 28, 2025
Aug 28, 2025
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Jan 27, 2025
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Jan 21, 2025
Jan 21, 2025
Authorisation
OPPO
Jan 21, 2025
Jan 21, 2025
Jan 7, 2025
Jan 6, 2025
Jan 6, 2025
Jan 6, 2025
Dec 20, 2024
Dec 20, 2024
Dec 12, 2024
Dec 6, 2024
Dec 6, 2024
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Dec 6, 2024
Dec 6, 2024
Dec 6, 2024
Dec 6, 2024
Dec 6, 2024
Dec 6, 2024
Dec 6, 2024
Mar 19, 2024
Feb 8, 2024
Decision to grant a European patent
Search/Exam
Jan 26, 2024
(Electronic) Receipt
Search/Exam
Jan 26, 2024
Filing of the translations of the claims
Search/Exam
Jan 26, 2024
French translation of claims
Search/Exam
Jan 26, 2024
German translation of the claims
Search/Exam
Jan 26, 2024
Letter accompanying subsequently filed items
Search/Exam
Nov 16, 2023
Nov 16, 2023
Nov 16, 2023
Nov 16, 2023
Intention to grant (signatures)
Search/Exam
Nov 16, 2023
Text intended for grant (clean copy)
Search/Exam
Nov 16, 2023
Sep 21, 2023
(Electronic) Receipt
Search/Exam
Sep 21, 2023
Abstract
Search/Exam
Sep 21, 2023
Abstract
Search/Exam
Sep 21, 2023
Amended claims with annotations
Search/Exam
Sep 21, 2023
Amended description with annotations
Search/Exam
Sep 21, 2023
Claims
Search/Exam
Sep 21, 2023
Description
Search/Exam
Sep 21, 2023
Letter accompanying subsequently filed items
Search/Exam
Sep 21, 2023
May 11, 2023
Annex to the communication
Search/Exam
May 11, 2023
Communication from the Examining Division
Search/Exam
May 4, 2023
Examination started
Search/Exam
May 4, 2023
Mar 13, 2023
Mar 3, 2023
Feb 23, 2023
(Electronic) Receipt
Search/Exam
Feb 23, 2023
(Electronic) Receipt
Search/Exam
Feb 23, 2023
(Electronic) Receipt
Search/Exam
Feb 23, 2023
Feb 23, 2023
Amended claims with annotations
Search/Exam
Feb 23, 2023
Feb 23, 2023
Amended description with annotations
Search/Exam
Feb 23, 2023
Amendments received before examination
Search/Exam
Feb 23, 2023
Letter accompanying subsequently filed items
Search/Exam
Feb 23, 2023
Letter accompanying subsequently filed items
Search/Exam
Feb 23, 2023
Request for entry into the European phase
Search/Exam
Feb 23, 2023
Feb 3, 2023
(Electronic) Receipt
PCTRO
Feb 3, 2023
Feb 3, 2023
Jan 30, 2023
Jan 30, 2023
Jan 26, 2023
Jan 26, 2023
Jan 26, 2023
Notification of the recording of a change
Search/Exam
Jan 19, 2023
(Electronic) Receipt
PCTRO
Jan 19, 2023
Jan 19, 2023
Jan 13, 2023
(Electronic) Receipt
PCTRO
Jan 13, 2023
Jan 13, 2023
Jan 13, 2023
Dec 2, 2022
Information on entry into European phase
Search/Exam
Oct 10, 2022
Oct 10, 2022
Oct 10, 2022
Oct 10, 2022
Oct 10, 2022
Sep 9, 2022
Sep 9, 2022
Sep 9, 2022
Sep 9, 2022
Sep 9, 2022
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Sep 9, 2022
Jul 11, 2022
Written opinion
PCT2
Jul 11, 2022
Jul 11, 2022
Jun 20, 2022
Jun 20, 2022
Jun 20, 2022
Jun 3, 2022
May 31, 2022
May 24, 2022
May 24, 2022
PCT demand form
PCT2
May 24, 2022
May 24, 2022
May 24, 2022
May 24, 2022
May 24, 2022
May 24, 2022
Feb 24, 2022
Copy of the international search report
Search/Exam
Feb 24, 2022
Jan 27, 2022
Published international application - A2
Search/Exam
Jan 18, 2022
ISR: cited documents
PCTISA
Jan 18, 2022
Jan 18, 2022
Jan 18, 2022
Nov 16, 2021
(Electronic) Receipt
PCTISA
Nov 16, 2021
Nov 16, 2021
Nov 5, 2021
Nov 5, 2021
Aug 10, 2021
Aug 10, 2021
Aug 6, 2021
Jul 23, 2021
(Electronic) Receipt
PCTRO
Jul 23, 2021
Abstract
PCTRO
Jul 23, 2021
Claims
PCTRO
Jul 23, 2021
Description
PCTRO
Jul 23, 2021
Jul 23, 2021