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The patent EP3426183 was granted to Spartan Orthodontics on Jan 17, 2024. The application was filed on Mar 13, 2017 under application number EP17762364A. The patent is currently recorded with a legal status of "Patent Maintained As Amended".

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 |
|---|---|---|---|
| HENRY SCHEIN | Jul 27, 2021 | DE ROOIJ | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| INTERNATIONAL-SEARCH-REPORT | US2011244414 |
| INTERNATIONAL-SEARCH-REPORT | US6976839 |
| OPPOSITION | EP1649824 |
| OPPOSITION | FR2979225 |
| OPPOSITION | US3690003 |
| OPPOSITION | US4525143 |
| OPPOSITION | WO2013144283 |
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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OPPO
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Description
OPPO
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Description
OPPO
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Decision to grant a European patent
Search/Exam
Sep 21, 2020
(Electronic) Receipt
Search/Exam
Sep 21, 2020
French translation of claims
Search/Exam
Sep 21, 2020
German translation of the claims
Search/Exam
Sep 21, 2020
Letter accompanying subsequently filed items
Search/Exam
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Intention to grant (signatures)
Search/Exam
May 20, 2020
Text intended for grant (clean copy)
Search/Exam
May 20, 2020
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(Electronic) Receipt
Search/Exam
Apr 17, 2020
Letter accompanying subsequently filed items
Search/Exam
Apr 17, 2020
Maintenance of the application
Search/Exam
Nov 12, 2019
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European search opinion
Search/Exam
Oct 22, 2019
Information on Search Strategy
Search/Exam
Oct 22, 2019
Supplementary European search report
Search/Exam
Oct 8, 2019
Search started
Search/Exam
Dec 19, 2018
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Communication to designated inventor
Search/Exam
Oct 11, 2018
(Electronic) Receipt
Search/Exam
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Amended claims with annotations
Search/Exam
Oct 11, 2018
Request for entry into the European phase
Search/Exam
Sep 18, 2018
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Citation filed by a third party
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Citation filed by a third party
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Citation filed by a third party
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Citation filed by a third party
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Search/Exam
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Observations by third parties
Search/Exam
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Observations by third parties
Search/Exam
Jul 18, 2018
Information on entry into European phase
Search/Exam
Feb 6, 2018
Notification of the recording of a change
Search/Exam
Oct 2, 2017
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Sep 14, 2017
Copy of the international search report
Search/Exam
Sep 14, 2017
Published international application - A1
Search/Exam