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The patent EP3805838 was granted to Leica Instruments Singapore PTE on Dec 6, 2023. The application was filed on Oct 10, 2019 under application number EP19202503A. 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 |
|---|---|---|---|
| CARL ZEISS | Sep 5, 2024 | PATERIS PATENTANWALTE PARTMBB | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| OPPOSITION | DE10038526 |
| OPPOSITION | DE102006004232 |
| OPPOSITION | DE102007007797 |
| OPPOSITION | DE102010033825 |
| OPPOSITION | DE102014008243 |
| OPPOSITION | DE102015011441 |
| OPPOSITION | DE102017203448 |
| OPPOSITION | DE102017210274 |
| OPPOSITION | DE102017221187 |
| OPPOSITION | DE102018110643 |
| OPPOSITION | DE102018114695 |
| OPPOSITION | DE19829981 |
| OPPOSITION | US2002103439 |
| OPPOSITION | US2006241496 |
| OPPOSITION | US2012200694 |
| OPPOSITION | US2014378843 |
| OPPOSITION | US2017223316 |
| OPPOSITION | WO2004098398 |
| SEARCH | US2002103439 |
| SEARCH | US2006241496 |
| SEARCH | US2017223316 |
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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Dec 19, 2023
Nov 9, 2023
Decision to grant a European patent
Search/Exam
Sep 19, 2023
(Electronic) Receipt
Search/Exam
Sep 19, 2023
Filing of the translations of the claims
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Sep 19, 2023
French translation of claims
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Sep 19, 2023
German translation of the claims
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Sep 19, 2023
Letter accompanying subsequently filed items
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May 24, 2023
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Intention to grant (signatures)
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May 24, 2023
Text intended for grant (clean copy)
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May 24, 2023
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Examination started
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Nov 29, 2021
Document concerning representation
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Oct 27, 2021
Oct 22, 2021
Sep 10, 2021
(Electronic) Receipt
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Sep 10, 2021
Sep 10, 2021
Amended claims with annotations
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Sep 10, 2021
Sep 10, 2021
Amended description with annotations
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Sep 10, 2021
Amendments received before examination
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Sep 10, 2021
Letter accompanying subsequently filed items
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Apr 19, 2021
Mar 17, 2021
Notification of forthcoming publication
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May 4, 2020
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European search opinion
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May 4, 2020
European search report
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May 4, 2020
Information on Search Strategy
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Apr 16, 2020
Search started
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Jan 8, 2020
Communication to designated inventor
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Nov 28, 2019
(Electronic) Receipt
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Nov 28, 2019
Nov 28, 2019
Letter accompanying subsequently filed items
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Nov 28, 2019
Matter concerning the application
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Oct 10, 2019
Abstract
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Oct 10, 2019
Oct 10, 2019
Claims
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Oct 10, 2019
Description
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Oct 10, 2019
Designation of inventor
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Oct 10, 2019
Drawings
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Oct 10, 2019
Request for grant of a European patent
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