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The patent EP3695194 was granted to Tutzu on May 11, 2022. The application was filed on Oct 9, 2018 under application number EP18792358A. 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 |
|---|---|---|---|
| DR JOHANNES HEIDENHAIN | Jan 19, 2023 | HOFMANN | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| INTERNATIONAL-SEARCH-REPORT | DE102012200195 |
| INTERNATIONAL-SEARCH-REPORT | DE19509342 |
| INTERNATIONAL-SEARCH-REPORT | EP1164358 |
| OPPOSITION | DE102016223158 |
| OPPOSITION | DE10354444 |
| OPPOSITION | JPH08334379 |
| OPPOSITION | US7868609 |
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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Jul 7, 2025
May 28, 2025
May 23, 2025
(Electronic) Receipt
Appeal
May 23, 2025
May 23, 2025
Claims
Appeal
May 23, 2025
May 23, 2025
Reply to appeal
Appeal
Jan 23, 2025
Jan 20, 2025
(Electronic) Receipt
Appeal
Jan 20, 2025
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(Electronic) Receipt
Appeal
Dec 18, 2024
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Notice of appeal
Appeal
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OPPO
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Description
OPPO
May 24, 2024
Description
OPPO
May 24, 2024
Description
OPPO
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Decision to grant a European patent
Search/Exam
Apr 1, 2022
(Electronic) Receipt
Search/Exam
Apr 1, 2022
English translation of the claims
Search/Exam
Apr 1, 2022
Filing of the translations of the claims
Search/Exam
Apr 1, 2022
French translation of claims
Search/Exam
Apr 1, 2022
Letter accompanying subsequently filed items
Search/Exam
Dec 1, 2021
Dec 1, 2021
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Intention to grant (signatures)
Search/Exam
Dec 1, 2021
Text intended for grant (clean copy)
Search/Exam
Dec 1, 2021
Nov 3, 2021
Examination started
Search/Exam
May 19, 2021
(Electronic) Receipt
Search/Exam
May 19, 2021
Letter accompanying subsequently filed items
Search/Exam
May 19, 2021
Letter concerning search matters
Search/Exam
May 19, 2021
Apr 1, 2021
Mar 31, 2021
Decision to allow further processing
Search/Exam
Mar 22, 2021
(Electronic) Receipt
Search/Exam
Mar 22, 2021
Letter accompanying subsequently filed items
Search/Exam
Mar 22, 2021
Reply to Written Opinion prepared by the EPO
Search/Exam
Mar 22, 2021
Request for further processing
Search/Exam
Feb 15, 2021
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May 12, 2020
(Electronic) Receipt
Search/Exam
May 12, 2020
Request for entry into the European phase
Search/Exam
Apr 30, 2020
Feb 21, 2020
Information on entry into European phase
Search/Exam
May 9, 2019
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Apr 18, 2019
Copy of the international search report
Search/Exam
Apr 18, 2019
Copy of the international search report
Search/Exam
Apr 18, 2019
Published international application - A1
Search/Exam
Jan 21, 2019
ISR: cited documents
PCTISA
Jan 21, 2019
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Nov 23, 2018
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Oct 20, 2018
Abstract
PCTISA
Oct 20, 2018
Claims
PCTISA
Oct 20, 2018
Description
PCTISA
Oct 20, 2018
Drawings
PCTISA
Oct 20, 2018