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The patent EP3918413 was granted to Carl Zeiss on Jun 7, 2023. The application was filed on Jan 30, 2020 under application number EP20701790A. 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 |
|---|---|---|---|
| RODENSTOCK | Mar 7, 2024 | 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 |
|---|---|
| DESCRIPTION | US2012013846 |
| DESCRIPTION | US2017063664 |
| EXAMINATION | EP2947505 |
| EXAMINATION | US5805263 |
| INTERNATIONAL-SEARCH-REPORT | BE899997 |
| INTERNATIONAL-SEARCH-REPORT | EP2947505 |
| INTERNATIONAL-SEARCH-REPORT | GB466620 |
| INTERNATIONAL-SEARCH-REPORT | US2012013846 |
| INTERNATIONAL-SEARCH-REPORT | US4504128 |
| INTERNATIONAL-SEARCH-REPORT | US4561736 |
| INTERNATIONAL-SEARCH-REPORT | US4784482 |
| INTERNATIONAL-SEARCH-REPORT | US6440335 |
| OPPOSITION | AU117067B |
| OPPOSITION | AU1432288 |
| OPPOSITION | BE899997 |
| OPPOSITION | CN2098696U |
| OPPOSITION | DE10310561 |
| OPPOSITION | DE8705203U |
| OPPOSITION | EP1409198 |
| OPPOSITION | GB466620 |
| OPPOSITION | US2012013846 |
| OPPOSITION | US2018133987 |
| OPPOSITION | US2019016074 |
| OPPOSITION | US4504128 |
| OPPOSITION | US6440335 |
| OPPOSITION | US7507358 |
| OPPOSITION | US7919020 |
| OPPOSITION | US9535262 |
| OPPOSITION | US9778485 |
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.
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Decision to grant a European patent
Search/Exam
Mar 13, 2023
(Electronic) Receipt
Search/Exam
Mar 13, 2023
French translation of claims
Search/Exam
Mar 13, 2023
German translation of the claims
Search/Exam
Mar 13, 2023
Letter accompanying subsequently filed items
Search/Exam
Feb 28, 2023
(Electronic) Receipt
Search/Exam
Feb 28, 2023
Letter accompanying subsequently filed items
Search/Exam
Feb 28, 2023
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Intention to grant (signatures)
Search/Exam
Nov 16, 2022
Text intended for grant (clean copy)
Search/Exam
Nov 16, 2022
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Annex to the communication
Search/Exam
Oct 10, 2022
Consultation by telephone/in person
Search/Exam
Oct 10, 2022
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(Electronic) Receipt
Search/Exam
Jun 23, 2022
Amended claims with annotations
Search/Exam
Jun 23, 2022
Claims
Search/Exam
Jun 23, 2022
Letter accompanying subsequently filed items
Search/Exam
Jun 23, 2022
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Annex to the communication
Search/Exam
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(Electronic) Receipt
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Mar 14, 2022
Letter accompanying subsequently filed items
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Document concerning representation
Search/Exam
Feb 4, 2022
Annex to the communication
Search/Exam
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Examination started
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Nov 10, 2021
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Priority search results copy provided by EPO
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Aug 17, 2021
(Electronic) Receipt
Search/Exam
Aug 17, 2021
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Amended claims with annotations
Search/Exam
Aug 17, 2021
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Amended description with annotations
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Aug 17, 2021
Amendments received before examination
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Aug 17, 2021
Request for entry into the European phase
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Information on entry into European phase
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Written opinion
PCT2
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Notification of election of EPO
Search/Exam
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PCT demand form
PCT2
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Copy of the international search report
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Aug 6, 2020
Published international application - A1
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PCTRO
Jan 30, 2020
Abstract
PCTRO
Jan 30, 2020
Claims
PCTRO
Jan 30, 2020
Description
PCTRO
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PCTRO
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