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The patent EP3053418 was granted to Hypertherm on May 19, 2021. The application was filed on Sep 29, 2014 under application number EP14781037A. 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 |
|---|---|---|---|
| KJELLBERG FINSTERWALDE PLASMA UND MASCHINEN | Feb 18, 2022 | MANASSE | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| INTERNATIONAL-SEARCH-REPORT | US2002125224 |
| INTERNATIONAL-SEARCH-REPORT | US3758746 |
| INTERNATIONAL-SEARCH-REPORT | US3930139 |
| INTERNATIONAL-SEARCH-REPORT | WO0005931 |
| OPPOSITION | DD111166 |
| OPPOSITION | DD87218 |
| OPPOSITION | DE2416732 |
| OPPOSITION | DE3106164 |
| OPPOSITION | EP0334981 |
| OPPOSITION | GB1566192 |
| OPPOSITION | US2002125224 |
| OPPOSITION | US3198932 |
| OPPOSITION | US3758746 |
| OPPOSITION | US3930139 |
| OPPOSITION | WO0005931 |
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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Authorisation
OPPO
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Jun 1, 2021
Apr 22, 2021
Decision to grant a European patent
Search/Exam
Apr 9, 2021
(Electronic) Receipt
Search/Exam
Apr 9, 2021
Filing of the translations of the claims
Search/Exam
Apr 9, 2021
French translation of claims
Search/Exam
Apr 9, 2021
German translation of the claims
Search/Exam
Apr 9, 2021
Letter accompanying subsequently filed items
Search/Exam
Dec 14, 2020
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Intention to grant (signatures)
Search/Exam
Dec 14, 2020
Text intended for grant (clean copy)
Search/Exam
Dec 14, 2020
Aug 18, 2020
(Electronic) Receipt
Search/Exam
Aug 18, 2020
Amended claims with annotations
Search/Exam
Aug 18, 2020
Amended description with annotations
Search/Exam
Aug 18, 2020
Claims
Search/Exam
Aug 18, 2020
Description
Search/Exam
Aug 18, 2020
Letter accompanying subsequently filed items
Search/Exam
Aug 18, 2020
Apr 9, 2020
Annex to the communication
Search/Exam
Apr 9, 2020
Communication from the Examining Division
Search/Exam
Apr 6, 2020
Examination started
Search/Exam
Feb 20, 2018
Feb 14, 2018
Jul 13, 2016
May 25, 2016
May 10, 2016
Communication to designated inventor
Search/Exam
May 10, 2016
Communication to designated inventor
Search/Exam
May 10, 2016
Communication to designated inventor
Search/Exam
Apr 29, 2016
(Electronic) Receipt
Search/Exam
Apr 29, 2016
Apr 29, 2016
Amended claims with annotations
Search/Exam
Apr 29, 2016
Request for entry into the European phase
Search/Exam
Apr 19, 2016
Feb 5, 2016
Information on entry into European phase
Search/Exam
Apr 21, 2015
Apr 2, 2015
Copy of the international search report
Search/Exam
Apr 2, 2015
Published international application - A1
Search/Exam
Dec 19, 2014
Dec 19, 2014
Dec 19, 2014
Oct 6, 2014
Abstract
PCTISA
Oct 6, 2014
Annex
PCTISA
Oct 6, 2014
Claims
PCTISA
Oct 6, 2014
Description
PCTISA
Oct 6, 2014
Drawings
PCTISA