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The patent EP3602977 was granted to Ista on May 5, 2021. The application was filed on Mar 28, 2018 under application number EP18712627A. 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 |
|---|---|---|---|
| TECHEM ENERGY SERVICES | Feb 5, 2022 | KEIL & SCHAAFHAUSEN PATENTANWALTE PARTGMBB | ADMISSIBLE |
| DSI TRANEMOSEGAARDBOLIGSELSKABET SYDFYN HADERSLEV BOLIGSELSKABBOLIGSELSKABET AKB ALBERTSLUND | Feb 3, 2022 | INSPICOS PS | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| INTERNATIONAL-SEARCH-REPORT | US2007189312 |
| INTERNATIONAL-SEARCH-REPORT | US2009043407 |
| INTERNATIONAL-SEARCH-REPORT | US2009299919 |
| INTERNATIONAL-SEARCH-REPORT | US2016057004 |
| INTERNATIONAL-SEARCH-REPORT | WO2014000741 |
| OPPOSITION | EP2945330 |
| OPPOSITION | US2007263661 |
| OPPOSITION | US2009299919 |
| OPPOSITION | US2012039186 |
| OPPOSITION | US2016057004 |
| OPPOSITION | US2017005920 |
| OPPOSITION | WO2014000741 |
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
Mar 25, 2021
(Electronic) Receipt
Search/Exam
Mar 25, 2021
French translation of claims
Search/Exam
Mar 25, 2021
German translation of the claims
Search/Exam
Mar 25, 2021
Letter accompanying subsequently filed items
Search/Exam
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Intention to grant (signatures)
Search/Exam
Dec 8, 2020
Text intended for grant (clean copy)
Search/Exam
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Examination started
Search/Exam
May 15, 2020
(Electronic) Receipt
Search/Exam
May 15, 2020
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Amended claims with annotations
Search/Exam
May 15, 2020
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May 15, 2020
Letter accompanying subsequently filed items
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Communication to designated inventor
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Communication to designated inventor
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Oct 29, 2019
Priority search results copy provided by EPO
Search/Exam
Oct 9, 2019
(Electronic) Receipt
Search/Exam
Oct 9, 2019
Request for entry into the European phase
Search/Exam
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Information on entry into European phase
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Notification of election of EPO
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Copy of the international search report
Search/Exam
Oct 4, 2018
Published international application - A1
Search/Exam
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(Electronic) Receipt
PCTISA
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(Electronic) Receipt
PCTRO
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Abstract
PCTRO
Mar 28, 2018
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Mar 28, 2018
Description
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