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The patent EP3946853 was granted to Wista Werkzeugfertigungs on Jan 17, 2024. The application was filed on Apr 1, 2020 under application number EP20722440A. 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 |
|---|---|---|---|
| RING MASCHINENBAU | Oct 17, 2024 | WITTE | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | DE202005010990U |
| DESCRIPTION | DE202014104997U |
| DESCRIPTION | DE202017103498U |
| DESCRIPTION | DE202019000468U |
| DESCRIPTION | DE3339503 |
| DESCRIPTION | DE4135787 |
| INTERNATIONAL-SEARCH-REPORT | DE202005010990U |
| INTERNATIONAL-SEARCH-REPORT | DE202017103498U |
| INTERNATIONAL-SEARCH-REPORT | DE202019000468U |
| OPPOSITION | DE102017121985 |
| OPPOSITION | DE202005010990U |
| OPPOSITION | DE202014104997U |
| OPPOSITION | DE202017103498U |
| OPPOSITION | DE202019000468U |
| OPPOSITION | DE3339503 |
| OPPOSITION | DE4135787 |
| OPPOSITION | DE4413874 |
| OPPOSITION | JP2004107815 |
| OPPOSITION | JP5837711B |
| OPPOSITION | KR101828811B |
| OPPOSITION | US2011088605 |
| OPPOSITION | US2017306543 |
| OPPOSITION | US4258636 |
| OPPOSITION | US5003897 |
| OPPOSITION | US6321647 |
| OPPOSITION | WO2015076389 |
| OPPOSITION | WO2018129217 |
| OPPOSITION | WO2018158982 |
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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Decision to grant a European patent
Search/Exam
Nov 30, 2023
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(Electronic) Receipt
Search/Exam
Oct 24, 2023
English translation of the claims
Search/Exam
Oct 24, 2023
Filing of the translations of the claims
Search/Exam
Oct 24, 2023
French translation of claims
Search/Exam
Oct 24, 2023
Letter accompanying subsequently filed items
Search/Exam
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Intention to grant (signatures)
Search/Exam
Jul 18, 2023
Text intended for grant (clean copy)
Search/Exam
Jul 18, 2023
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Examination started
Search/Exam
Aug 9, 2022
(Electronic) Receipt
Search/Exam
Aug 9, 2022
Letter accompanying subsequently filed items
Search/Exam
Aug 9, 2022
Jul 6, 2022
May 30, 2022
(Electronic) Receipt
Search/Exam
May 30, 2022
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Amended claims with annotations
Search/Exam
May 30, 2022
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Amended description with annotations
Search/Exam
May 30, 2022
Amendments received before examination
Search/Exam
May 30, 2022
Letter accompanying subsequently filed items
Search/Exam
Jan 12, 2022
Nov 18, 2021
Oct 29, 2021
(Electronic) Receipt
Search/Exam
Oct 29, 2021
Request for entry into the European phase
Search/Exam
Oct 18, 2021
Aug 13, 2021
Information on entry into European phase
Search/Exam
Oct 26, 2020
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Copy of the international search report
Search/Exam
Oct 8, 2020
Copy of the international search report
Search/Exam
Oct 8, 2020
Published international application - A1
Search/Exam
Jul 21, 2020
ISR: cited documents
PCTISA
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Abstract
PCTISA
Apr 29, 2020
Annex
PCTISA
Apr 29, 2020
Annex
PCTISA
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Annex
PCTISA
Apr 29, 2020
Claims
PCTISA
Apr 29, 2020
Description
PCTISA
Apr 29, 2020
Drawings
PCTISA
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