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The patent EP2265794 was granted to Petroleum Technology on Sep 6, 2023. The application was filed on Mar 13, 2009 under application number EP09720386A. The patent is currently recorded with a legal status of "Granted And Under Opposition".

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 |
|---|---|---|---|
| TCO | Jun 6, 2024 | DRAGSTED PARTNERS | WITHDRAWN |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| INTERNATIONAL-SEARCH-REPORT | US2003111231 |
| INTERNATIONAL-SEARCH-REPORT | US2004182437 |
| INTERNATIONAL-SEARCH-REPORT | US2007227739 |
| INTERNATIONAL-SEARCH-REPORT | US3208398 |
| INTERNATIONAL-SEARCH-REPORT | WO2008150179 |
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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Decision to grant a European patent
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Aug 1, 2023
(Electronic) Receipt
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Aug 1, 2023
Filing of the translations of the claims
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Aug 1, 2023
French translation of claims
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Aug 1, 2023
German translation of the claims
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Aug 1, 2023
Letter accompanying subsequently filed items
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Intention to grant (signatures)
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Jun 16, 2023
Text intended for grant (clean copy)
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Annex to the communication
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(Electronic) Receipt
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May 12, 2023
Amended claims with annotations
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Annex to the communication
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May 2, 2023
Consultation by telephone/in person
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Letter accompanying subsequently filed items
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Apr 26, 2023
Oral proceedings: reply to date proposed
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Annex to the communication
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Nov 18, 2022
Summons to attend oral proceedings
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Oct 11, 2022
(Electronic) Receipt
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Oct 11, 2022
Letter accompanying subsequently filed items
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Oct 11, 2022
Jun 22, 2022
Annex to the communication
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Jun 22, 2022
Communication from the Examining Division
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Document concerning representation
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Letter accompanying subsequently filed items
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Jun 7, 2021
Annexes in respect of a client data request
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Aug 6, 2020
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Aug 6, 2020
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Submission concerning representation
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Letter accompanying subsequently filed items
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Aug 30, 2018
Communication from the Examining Division
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Letter accompanying subsequently filed items
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Communication from the Examining Division
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Submission concerning representation
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Published international application - A2
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Abstract
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