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The patent EP3695584 was granted to Ista on Nov 18, 2020. The application was filed on Oct 2, 2019 under application number EP19783424A. 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 | Aug 18, 2021 | KEIL & SCHAAFHAUSEN PATENTANWALTE PARTGMBB | - |
| DSI TRANEMOSEGAARDBOLIGSELSKABET SYDFYN HADERSLEV BOLIGSELSKABBOLIGSELSKABET AKB ALBERTSLUND | Aug 11, 2021 | 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 | EP3086102 |
| INTERNATIONAL-SEARCH-REPORT | US2018090934 |
| OPPOSITION | EP1843136 |
| OPPOSITION | EP3086102 |
| OPPOSITION | US2015027433 |
| OPPOSITION | US2018090934 |
| OPPOSITION | US2018191867 |
| OPPOSITION | US7557729 |
| OPPOSITION | US8620885 |
| OPPOSITION | US8730056 |
| OPPOSITION | US9279700 |
| OPPOSITION | WO2014151000 |
| OPPOSITION | WO2014165208 |
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.
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Appeal
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General enquiry
Appeal
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Appeal
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Reply to appeal
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Appeal
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Notice of appeal
Appeal
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Decision to grant a European patent
Search/Exam
Oct 9, 2020
(Electronic) Receipt
Search/Exam
Oct 9, 2020
Filing of the translations of the claims
Search/Exam
Oct 9, 2020
French translation of claims
Search/Exam
Oct 9, 2020
German translation of the claims
Search/Exam
Sep 28, 2020
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Notification of the recording of a change
Search/Exam
Sep 21, 2020
(Electronic) Receipt
Search/Exam
Sep 21, 2020
Annexes in respect of a client data request
Search/Exam
Sep 21, 2020
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Intention to grant (signatures)
Search/Exam
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Text intended for grant (clean copy)
Search/Exam
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Examination started
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Communication to designated inventor
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Communication to designated inventor
Search/Exam
May 11, 2020
(Electronic) Receipt
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Amended claims with annotations
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May 11, 2020
Request for entry into the European phase
Search/Exam
Apr 30, 2020
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Copy of the international search report
Search/Exam
Apr 9, 2020
Published international application - A1
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Jan 16, 2020
ISR: cited documents
PCTISA
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Annex
PCTISA
Dec 20, 2019
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Oct 4, 2019
Abstract
PCTISA
Oct 4, 2019
Claims
PCTISA
Oct 4, 2019
Description
PCTISA
Oct 4, 2019
Drawings
PCTISA
Oct 4, 2019