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The patent EP3021755 was granted to Sirona Dental Systems on Aug 25, 2021. The application was filed on Jul 15, 2014 under application number EP14750155A. The patent is currently recorded with a legal status of "Revoked".

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 |
|---|---|---|---|
| PALODEX GROUP | May 23, 2022 | THUN | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | EP2146321 |
| INTERNATIONAL-SEARCH-REPORT | DE102008035412 |
| INTERNATIONAL-SEARCH-REPORT | EP1815794 |
| INTERNATIONAL-SEARCH-REPORT | EP2130491 |
| OPPOSITION | DE102008035412 |
| OPPOSITION | EP1815794 |
| OPPOSITION | EP2130491 |
| OPPOSITION | EP2146321 |
| OPPOSITION | EP2521095 |
| OPPOSITION | JP2012112790 |
| OPPOSITION | US5023894 |
| OPPOSITION | WO02056770 |
| OPPOSITION | WO2011113441 |
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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Means of redress
OPPO
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Description
OPPO
Oct 19, 2022
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Sep 7, 2021
Jul 29, 2021
Decision to grant a European patent
Search/Exam
Jul 20, 2021
(Electronic) Receipt
Search/Exam
Jul 20, 2021
English translation of the claims
Search/Exam
Jul 20, 2021
Filing of the translations of the claims
Search/Exam
Jul 20, 2021
French translation of claims
Search/Exam
Jul 20, 2021
Letter accompanying subsequently filed items
Search/Exam
Apr 22, 2021
Apr 22, 2021
Apr 22, 2021
Intention to grant (signatures)
Search/Exam
Apr 22, 2021
Text intended for grant (clean copy)
Search/Exam
Apr 22, 2021
Mar 31, 2021
Annex to the communication
Search/Exam
Mar 31, 2021
Consultation by telephone/in person
Search/Exam
Mar 31, 2021
Feb 3, 2020
(Electronic) Receipt
Search/Exam
Feb 3, 2020
Abstract
Search/Exam
Feb 3, 2020
Abstract
Search/Exam
Feb 3, 2020
Amended claims with annotations
Search/Exam
Feb 3, 2020
Amended description with annotations
Search/Exam
Feb 3, 2020
Claims
Search/Exam
Feb 3, 2020
Description
Search/Exam
Feb 3, 2020
Letter accompanying subsequently filed items
Search/Exam
Feb 3, 2020
Oct 2, 2019
Annex to the communication
Search/Exam
Oct 2, 2019
Communication from the Examining Division
Search/Exam
Aug 19, 2019
Aug 13, 2019
Aug 6, 2019
Aug 5, 2019
Jun 14, 2019
Oct 20, 2016
Priority search results
Search/Exam
Oct 20, 2016
Oct 14, 2016
Aug 4, 2016
Aug 3, 2016
Reply to Written Opinion prepared by the EPO
Search/Exam
Apr 28, 2016
Mar 21, 2016
Letter which had not been notified
Search/Exam
Feb 24, 2016
Feb 22, 2016
Communication to designated inventor
Search/Exam
Feb 22, 2016
Communication to designated inventor
Search/Exam
Feb 10, 2016
Payment of fees and costs
Search/Exam
Feb 10, 2016
Payment of fees and costs
Search/Exam
Feb 1, 2016
Jan 13, 2016
(Electronic) Receipt
Search/Exam
Jan 13, 2016
Request for entry into the European phase
Search/Exam
Nov 27, 2015
Information on entry into European phase
Search/Exam
Feb 10, 2015
Jan 22, 2015
Copy of the international search report
Search/Exam
Jan 22, 2015
Copy of the international search report
Search/Exam
Jan 22, 2015
Published international application - A1
Search/Exam
Oct 15, 2014
Oct 15, 2014
Oct 15, 2014
Aug 19, 2014
Aug 19, 2014
Jul 15, 2014
(Electronic) Receipt
PCTRO
Jul 15, 2014
Abstract
PCTRO
Jul 15, 2014
Claims
PCTRO
Jul 15, 2014
Description
PCTRO
Jul 15, 2014
Drawings
PCTRO