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The patent EP2444833 was granted to Leica Microsystems CMS on Aug 21, 2019. The application was filed on Oct 21, 2011 under application number EP11186060A. 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 | May 20, 2020 | LORITZ | - |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| OPPOSITION | DE102007015063 |
| OPPOSITION | DE102007063274 |
| OPPOSITION | WO2004053558 |
| SEARCH | DE102007045897 |
| SEARCH | GB2416453 |
| SEARCH | US7787179 |
| SEARCH | WO2009124700 |
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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Oct 21, 2025
Oct 21, 2025
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Oct 16, 2025
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Sep 18, 2025
(Electronic) Receipt
Appeal
Sep 18, 2025
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Sep 11, 2025
(Electronic) Receipt
Appeal
Sep 11, 2025
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Sep 10, 2025
(Electronic) Receipt
Appeal
Sep 10, 2025
Sep 10, 2025
Dec 5, 2024
Advice of delivery
Appeal
Dec 5, 2024
Dec 5, 2024
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Nov 29, 2024
Nov 26, 2024
(Electronic) Receipt
Appeal
Nov 26, 2024
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Sep 30, 2024
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(Electronic) Receipt
Appeal
Sep 23, 2024
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Aug 7, 2024
(Electronic) Receipt
Appeal
Aug 7, 2024
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Jun 13, 2024
Nov 17, 2023
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(Electronic) Receipt
Appeal
Nov 13, 2023
(Electronic) Receipt
Appeal
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Reply to appeal
Appeal
Nov 13, 2023
Reply to appeal
Appeal
Jul 3, 2023
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Jun 27, 2023
(Electronic) Receipt
Appeal
Jun 27, 2023
(Electronic) Receipt
Appeal
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(Electronic) Receipt
Appeal
May 5, 2023
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Apr 27, 2023
(Electronic) Receipt
Appeal
Apr 27, 2023
Apr 27, 2023
Notice of appeal
Appeal
Apr 21, 2023
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Apr 17, 2023
(Electronic) Receipt
Appeal
Apr 17, 2023
Apr 17, 2023
Notice of appeal
Appeal
Feb 24, 2023
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Means of redress
OPPO
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Sep 2, 2019
Jul 25, 2019
Decision to grant a European patent
Search/Exam
Jun 7, 2019
Change to the inventor details
Search/Exam
Jun 4, 2019
(Electronic) Receipt
Search/Exam
Jun 4, 2019
English translation of the claims
Search/Exam
Jun 4, 2019
Filing of the translations of the claims
Search/Exam
Jun 4, 2019
French translation of claims
Search/Exam
Jun 4, 2019
Letter accompanying subsequently filed items
Search/Exam
Feb 5, 2019
Feb 5, 2019
Feb 5, 2019
Intention to grant (signatures)
Search/Exam
Feb 5, 2019
Text intended for grant (clean copy)
Search/Exam
Feb 5, 2019
Nov 3, 2015
(Electronic) Receipt
Search/Exam
Nov 3, 2015
Amended claims with annotations
Search/Exam
Nov 3, 2015
Claims
Search/Exam
Nov 3, 2015
Letter accompanying subsequently filed items
Search/Exam
Nov 3, 2015
Oct 9, 2015
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Submission concerning representation
Search/Exam
Oct 5, 2015
(Electronic) Receipt
Search/Exam
Oct 5, 2015
Letter accompanying subsequently filed items
Search/Exam
Oct 5, 2015
Aug 11, 2015
Aug 5, 2015
Apr 11, 2015
Submission concerning representation
Search/Exam
Mar 26, 2015
Annex to the communication
Search/Exam
Mar 26, 2015
Communication from the Examining Division
Search/Exam
Mar 18, 2015
Examination started
Search/Exam
Nov 23, 2012
Nov 8, 2012
Oct 25, 2012
Oct 25, 2012
Amended claims with annotations
Search/Exam
Oct 25, 2012
Oct 25, 2012
Amendments received before examination
Search/Exam
May 2, 2012
Mar 28, 2012
Notification of forthcoming publication
Search/Exam
Jan 20, 2012
Jan 20, 2012
European search opinion
Search/Exam
Jan 20, 2012
European search report
Search/Exam
Jan 17, 2012
Priority search results copy provided by EPO
Search/Exam
Jan 13, 2012
Modified abstract
Search/Exam
Dec 14, 2011
Letter concerning the priority
Search/Exam
Dec 14, 2011
Priority document
Search/Exam
Dec 2, 2011
Nov 25, 2011
Letter concerning the priority
Search/Exam
Nov 25, 2011
Letter concerning the priority
Search/Exam
Oct 21, 2011
Abstract
Search/Exam
Oct 21, 2011
Oct 21, 2011
Claims
Search/Exam
Oct 21, 2011
Description
Search/Exam
Oct 21, 2011
Designation of inventor
Search/Exam
Oct 21, 2011
Designation of inventor
Search/Exam
Oct 21, 2011
Drawings
Search/Exam
Oct 21, 2011
Priority document
Search/Exam
Oct 21, 2011
Request for grant of a European patent
Search/Exam