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The patent EP3574371 was granted to Carl Zeiss on Mar 24, 2021. The application was filed on Jan 25, 2018 under application number EP18703706A. 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 | Dec 23, 2021 | MULLER BORE & PARTNER PATENTANWALTE PARTG MBB | - |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | US2003123026 |
| EXAMINATION | DE102008012268 |
| EXAMINATION | DE102011115239 |
| EXAMINATION | US2003123026 |
| INTERNATIONAL-SEARCH-REPORT | DE102011115239 |
| INTERNATIONAL-SEARCH-REPORT | FR2987908 |
| INTERNATIONAL-SEARCH-REPORT | US2003081173 |
| INTERNATIONAL-SEARCH-REPORT | US2003123026 |
| OPPOSITION | DE102009004383 |
| OPPOSITION | DE102011115239 |
| OPPOSITION | US2003081173 |
| OPPOSITION | US2003123026 |
| OPPOSITION | US2009021693 |
| OPPOSITION | US2014253875 |
| OPPOSITION | US2015015848 |
| OPPOSITION | US2015304530 |
| OPPOSITION | WO2012113805 |
| OPPOSITION | WO2015101737 |
| OPPOSITION | WO2016026570 |
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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Appeal
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Appeal
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Appeal
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Reply to appeal
Appeal
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(Electronic) Receipt
Appeal
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(Electronic) Receipt
Appeal
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Notice of appeal
Appeal
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Apr 6, 2021
Feb 25, 2021
Decision to grant a European patent
Search/Exam
Feb 12, 2021
(Electronic) Receipt
Search/Exam
Feb 12, 2021
English translation of the claims
Search/Exam
Feb 12, 2021
Filing of the translations of the claims
Search/Exam
Feb 12, 2021
French translation of claims
Search/Exam
Feb 12, 2021
Letter accompanying subsequently filed items
Search/Exam
Nov 10, 2020
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Intention to grant (signatures)
Search/Exam
Nov 10, 2020
Text intended for grant (clean copy)
Search/Exam
Nov 10, 2020
Aug 31, 2020
(Electronic) Receipt
Search/Exam
Aug 31, 2020
Claims
Search/Exam
Aug 31, 2020
Letter accompanying subsequently filed items
Search/Exam
Aug 31, 2020
Aug 24, 2020
(Electronic) Receipt
Search/Exam
Aug 24, 2020
Claims
Search/Exam
Aug 24, 2020
Description
Search/Exam
Aug 24, 2020
Letter accompanying subsequently filed items
Search/Exam
Aug 24, 2020
Jul 21, 2020
Annex to the communication
Search/Exam
Jul 21, 2020
Jul 21, 2020
May 20, 2020
(Electronic) Receipt
Search/Exam
May 20, 2020
Letter accompanying subsequently filed items
Search/Exam
May 20, 2020
Jan 29, 2020
Annex to the communication
Search/Exam
Jan 29, 2020
Communication from the Examining Division
Search/Exam
Jan 8, 2020
Examination started
Search/Exam
Nov 6, 2019
Sep 3, 2019
Change to the inventor details
Search/Exam
Aug 30, 2019
Communication to designated inventor
Search/Exam
Aug 30, 2019
Communication to designated inventor
Search/Exam
Aug 27, 2019
Priority search results copy provided by EPO
Search/Exam
Aug 7, 2019
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Jul 24, 2019
Information regarding early processing
Search/Exam
Jul 10, 2019
(Electronic) Receipt
Search/Exam
Jul 10, 2019
Letter concerning the inventor
Search/Exam
Jul 10, 2019
Reply to Written Opinion prepared by the EPO
Search/Exam
Jul 10, 2019
Request for entry into the European phase
Search/Exam
Jun 7, 2019
Information on entry into European phase
Search/Exam
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Notification of election of EPO
Search/Exam
Jan 8, 2019
Written opinion
PCT2
Jan 8, 2019
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PCT demand form
PCT2
Nov 22, 2018
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Copy of the international search report
Search/Exam
Aug 2, 2018
Copy of the international search report
Search/Exam
Aug 2, 2018
Published international application - A1
Search/Exam
May 3, 2018
ISR: cited documents
PCTISA
May 3, 2018
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Feb 28, 2018
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Jan 25, 2018
(Electronic) Receipt
PCTRO
Jan 25, 2018
Abstract
PCTRO
Jan 25, 2018
Claims
PCTRO
Jan 25, 2018
Description
PCTRO
Jan 25, 2018
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Drawings
PCTRO
Jan 25, 2018
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