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The patent EP3457874 was granted to British American Tobacco on Oct 22, 2025. The application was filed on May 19, 2017 under application number EP17728783A. The patent is currently recorded with a legal status of "Patent Maintained As Amended".

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 |
|---|---|---|---|
| PHILIP MORRIS | Feb 15, 2021 | GRUNECKER | ADMISSIBLE |
| PHILIP MORRIS | Feb 15, 2021 | GRUNECKER PATENT | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| INTERNATIONAL-SEARCH-REPORT | WO2008110934 |
| INTERNATIONAL-SEARCH-REPORT | WO2012126721 |
| INTERNATIONAL-SEARCH-REPORT | WO2014023557 |
| INTERNATIONAL-SEARCH-REPORT | WO2015082652 |
| OPPOSITION | CA2416144 |
| OPPOSITION | CN104921296 |
| OPPOSITION | DE1056023 |
| OPPOSITION | EP2625974 |
| OPPOSITION | EP3446574 |
| OPPOSITION | GB2210546 |
| OPPOSITION | US2012048286 |
| OPPOSITION | US2015164132 |
| OPPOSITION | US4966171 |
| OPPOSITION | US6089857 |
| OPPOSITION | WO0053037 |
| OPPOSITION | WO2008110934 |
| OPPOSITION | WO2011000638 |
| OPPOSITION | WO2012126721 |
| OPPOSITION | WO2014023557 |
| OPPOSITION | WO2014158051 |
| OPPOSITION | WO2015082649 |
| OPPOSITION | WO2015082652 |
| OPPOSITION | WO2015166245 |
| OPPOSITION | WO2016207192 |
| OPPOSITION | WO2017153443 |
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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Sep 25, 2025
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Refund of fees
Appeal
May 27, 2025
May 27, 2025
May 27, 2025
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Apr 29, 2025
Apr 28, 2025
(Electronic) Receipt
Appeal
Apr 28, 2025
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Dec 23, 2024
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(Electronic) Receipt
Appeal
Dec 18, 2024
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Dec 10, 2024
(Electronic) Receipt
Appeal
Dec 10, 2024
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Oct 30, 2024
Oct 25, 2024
(Electronic) Receipt
Appeal
Oct 25, 2024
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Oct 17, 2024
(Electronic) Receipt
Appeal
Oct 17, 2024
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Oct 11, 2024
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(Electronic) Receipt
Appeal
Feb 15, 2024
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Aug 21, 2023
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(Electronic) Receipt
Appeal
Aug 16, 2023
(Electronic) Receipt
Appeal
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Claims
Appeal
Aug 16, 2023
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Appeal
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Appeal
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Appeal
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Appeal
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Appeal
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Appeal
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Appeal
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Appeal
Aug 16, 2023
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Appeal
Aug 16, 2023
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Appeal
Aug 16, 2023
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Reply to appeal
Appeal
Aug 16, 2023
Reply to appeal
Appeal
Apr 6, 2023
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(Electronic) Receipt
Appeal
Apr 3, 2023
(Electronic) Receipt
Appeal
Apr 3, 2023
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(Electronic) Receipt
Appeal
Feb 1, 2023
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Notice of appeal
Appeal
Jan 31, 2023
(Electronic) Receipt
Appeal
Jan 31, 2023
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Notice of appeal
Appeal
Nov 24, 2022
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Means of redress
OPPO
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Description
OPPO
Aug 11, 2022
Description
OPPO
Aug 11, 2022
Description
OPPO
Aug 11, 2022
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(Electronic) Receipt
Search/Exam
Oct 6, 2020
Letter accompanying subsequently filed items
Search/Exam
Oct 6, 2020
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May 26, 2020
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Refund of fees
Search/Exam
Apr 17, 2020
Decision to grant a European patent
Search/Exam
Mar 25, 2020
(Electronic) Receipt
Search/Exam
Mar 25, 2020
Filing of the translations of the claims
Search/Exam
Mar 25, 2020
French translation of claims
Search/Exam
Mar 25, 2020
German translation of the claims
Search/Exam
Mar 25, 2020
Letter accompanying subsequently filed items
Search/Exam
Nov 22, 2019
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Intention to grant (signatures)
Search/Exam
Nov 22, 2019
Text intended for grant (clean copy)
Search/Exam
Nov 22, 2019
Oct 29, 2019
Examination started
Search/Exam
Jul 19, 2019
(Electronic) Receipt
Search/Exam
Jul 19, 2019
Jul 19, 2019
Amended claims with annotations
Search/Exam
Jul 19, 2019
Jul 19, 2019
Amended description with annotations
Search/Exam
Jul 19, 2019
Amendments received before examination
Search/Exam
Jul 19, 2019
Letter accompanying subsequently filed items
Search/Exam
Feb 27, 2019
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Communication to designated inventor
Search/Exam
Jan 8, 2019
Communication to designated inventor
Search/Exam
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Communication to designated inventor
Search/Exam
Jan 8, 2019
Communication to designated inventor
Search/Exam
Nov 29, 2018
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Notification of the recording of a change
Search/Exam
Nov 28, 2018
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Nov 19, 2018
(Electronic) Receipt
Search/Exam
Nov 19, 2018
Request for entry into the European phase
Search/Exam
Sep 28, 2018
Information on entry into European phase
Search/Exam
Sep 6, 2018
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Apr 20, 2018
Written opinion
PCT2
Apr 20, 2018
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Notification of election of EPO
Search/Exam
Mar 27, 2018
Mar 22, 2018
PCT demand form
PCT2
Mar 20, 2018
Mar 20, 2018
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Dec 12, 2017
Nov 23, 2017
Copy of the international search report
Search/Exam
Nov 23, 2017
Published international application - A1
Search/Exam
Sep 13, 2017
ISR: cited documents
PCTISA
Sep 11, 2017
Sep 11, 2017
Sep 11, 2017
Jun 22, 2017
Jun 16, 2017
May 26, 2017
May 19, 2017
(Electronic) Receipt
PCTRO
May 19, 2017
Abstract
PCTRO
May 19, 2017
Claims
PCTRO
May 19, 2017
Description
PCTRO
May 19, 2017
May 19, 2017
Drawings
PCTRO
May 19, 2017