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The patent EP3666091 was granted to British American Tobacco on Dec 20, 2023. The application was filed on May 19, 2017 under application number EP20151255A. 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 |
|---|---|---|---|
| JAPAN TOBACCO | Sep 20, 2024 | BARDEHLE PAGENBERG PARTNERSCHAFT MBB PATENTANWALTE RECHTSANWALTE | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| OPPOSITION | CN104921296 |
| OPPOSITION | EP2789248 |
| OPPOSITION | US2014238427 |
| OPPOSITION | US2015164132 |
| OPPOSITION | US3283762 |
| OPPOSITION | WO0028843 |
| OPPOSITION | WO2007110650 |
| OPPOSITION | WO2008110934 |
| OPPOSITION | WO2011000639 |
| OPPOSITION | WO2013098409 |
| OPPOSITION | WO2013120854 |
| OPPOSITION | WO2014023555 |
| OPPOSITION | WO2015082649 |
| OTHER | EP3457875 |
| OTHER | WO2008110934 |
| OTHER | WO2012126721 |
| OTHER | WO2015082652 |
| SEARCH | WO2008110934 |
| SEARCH | WO2012126721 |
| SEARCH | WO2014023557 |
| SEARCH | WO2015082652 |
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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Nov 23, 2023
Decision to grant a European patent
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Nov 14, 2023
(Electronic) Receipt
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Nov 14, 2023
Filing of the translations of the claims
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Nov 14, 2023
French translation of claims
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Nov 14, 2023
German translation of the claims
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Nov 14, 2023
Letter accompanying subsequently filed items
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Jul 4, 2023
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Intention to grant (signatures)
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Jul 4, 2023
Text intended for grant (clean copy)
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Jul 4, 2023
Mar 27, 2023
(Electronic) Receipt
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Mar 27, 2023
Amended claims with annotations
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Mar 27, 2023
Claims
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Mar 27, 2023
Letter accompanying subsequently filed items
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Mar 27, 2023
Nov 17, 2022
Annex to the communication
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Nov 17, 2022
Communication from the Examining Division
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Nov 16, 2022
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Nov 10, 2022
Non-patent literature filed by a third party
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Nov 10, 2022
Non-patent literature filed by a third party
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Nov 10, 2022
Observations by third parties
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Nov 10, 2022
Observations by third parties
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Nov 8, 2022
(Electronic) Receipt
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Nov 8, 2022
Citation filed by a third party
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Nov 8, 2022
Letter accompanying subsequently filed items
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Nov 8, 2022
Observations by third parties
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Oct 17, 2022
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Intention to grant (signatures)
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Oct 17, 2022
Text intended for grant (clean copy)
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Oct 17, 2022
Sep 23, 2022
Examination started
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Sep 22, 2022
(Electronic) Receipt
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Sep 22, 2022
Sep 22, 2022
Amended description with annotations
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Sep 22, 2022
Amendments received before examination
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Sep 22, 2022
Letter accompanying subsequently filed items
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Dec 17, 2020
(Electronic) Receipt
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Dec 17, 2020
Dec 17, 2020
Amended claims with annotations
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Dec 17, 2020
Amendments received before examination
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Dec 17, 2020
Letter accompanying subsequently filed items
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Dec 1, 2020
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Annexes in respect of a client data request
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Nov 25, 2020
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Oct 6, 2020
(Electronic) Receipt
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Oct 6, 2020
Letter accompanying subsequently filed items
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Oct 6, 2020
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Sep 28, 2020
Communication to designated inventor
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Sep 21, 2020
(Electronic) Receipt
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Sep 21, 2020
Letter accompanying subsequently filed items
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Sep 21, 2020
Letter concerning the inventor
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Aug 28, 2020
Aug 24, 2020
Letter which had not been notified
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Jun 22, 2020
May 27, 2020
Refund of fees
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May 20, 2020
May 20, 2020
European search opinion
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May 20, 2020
European search report
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May 20, 2020
Information on Search Strategy
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May 20, 2020
Notification of forthcoming publication
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May 14, 2020
Modified abstract
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Apr 3, 2020
Communication to designated inventor
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Apr 3, 2020
Communication to designated inventor
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Communication to designated inventor
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Apr 3, 2020
Communication to designated inventor
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Jan 10, 2020
Abstract
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Jan 10, 2020
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Claims
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Jan 10, 2020
Description
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Jan 10, 2020
Designation of inventor
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Jan 10, 2020
Drawings
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Jan 10, 2020
Request for grant of a European patent
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Dec 12, 2017