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The patent EP3753421 was granted to Japan Tobacco on Dec 8, 2021. The application was filed on Jul 18, 2006 under application number EP20188124A. 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 |
|---|---|---|---|
| IMPERIAL TOBACCO | Sep 8, 2022 | MEWBURN ELLIS | ADMISSIBLE |
| WEICKMANN & WEICKMANN | Sep 8, 2022 | - | ADMISSIBLE |
| NICOVENTURES | Sep 6, 2022 | DEHNS | ADMISSIBLE |
| PHILIP MORRIS | Sep 5, 2022 | HGF | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | US2004031495 |
| DESCRIPTION | US2004237974 |
| DESCRIPTION | US3792704 |
| DESCRIPTION | US4020853 |
| DESCRIPTION | US4219032 |
| DESCRIPTION | US4848374 |
| DESCRIPTION | US6164287 |
| OPPOSITION | CN1303636 |
| OPPOSITION | DE19854009 |
| OPPOSITION | DE19854012 |
| OPPOSITION | DE19934582 |
| OPPOSITION | EP0227424 |
| OPPOSITION | EP0409566 |
| OPPOSITION | EP0430559 |
| OPPOSITION | EP0430566 |
| OPPOSITION | EP0893071 |
| OPPOSITION | EP1025397 |
| OPPOSITION | US1886391 |
| OPPOSITION | US2002078951 |
| OPPOSITION | US2003033055 |
| OPPOSITION | US2003150451 |
| OPPOSITION | US2004031495 |
| OPPOSITION | US2005016550 |
| OPPOSITION | US5027837 |
| OPPOSITION | US5144962 |
| OPPOSITION | US5573692 |
| OPPOSITION | US5865186 |
| OPPOSITION | US6095153 |
| OPPOSITION | US6772756 |
| OPPOSITION | WO0170054 |
| OPPOSITION | WO03025527 |
| OPPOSITION | WO9406314 |
| OPPOSITION | WO9418860 |
| OPPOSITION | WO9817131 |
| SEARCH | US2002078951 |
| SEARCH | US2003033055 |
| SEARCH | US2003150451 |
| SEARCH | US2005016550 |
| SEARCH | US6095153 |
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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Dec 21, 2021
Nov 11, 2021
Decision to grant a European patent
Search/Exam
Oct 29, 2021
(Electronic) Receipt
Search/Exam
Oct 29, 2021
Filing of the translations of the claims
Search/Exam
Oct 29, 2021
French translation of claims
Search/Exam
Oct 29, 2021
German translation of the claims
Search/Exam
Oct 29, 2021
Letter accompanying subsequently filed items
Search/Exam
Oct 20, 2021
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Oct 20, 2021
Intention to grant (signatures)
Search/Exam
Oct 20, 2021
Text intended for grant (clean copy)
Search/Exam
Oct 20, 2021
Sep 29, 2021
Examination started
Search/Exam
Jun 22, 2021
(Electronic) Receipt
Search/Exam
Jun 22, 2021
Jun 22, 2021
Amended claims with annotations
Search/Exam
Jun 22, 2021
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Amended description with annotations
Search/Exam
Jun 22, 2021
Amendments received before examination
Search/Exam
Jun 22, 2021
Letter accompanying subsequently filed items
Search/Exam
Jan 13, 2021
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Notification of forthcoming publication
Search/Exam
Nov 24, 2020
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European search opinion
Search/Exam
Nov 24, 2020
European search report
Search/Exam
Nov 24, 2020
Information on Search Strategy
Search/Exam
Nov 18, 2020
Modified abstract
Search/Exam
Sep 18, 2020
Communication to designated inventor
Search/Exam
Sep 18, 2020
Communication to designated inventor
Search/Exam
Aug 11, 2020
Refund of fees
Search/Exam
Aug 10, 2020
(Electronic) Receipt
Search/Exam
Aug 10, 2020
Letter accompanying subsequently filed items
Search/Exam
Aug 10, 2020
Matter concerning the application
Search/Exam
Jul 28, 2020
Abstract
Search/Exam
Jul 28, 2020
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Claims
Search/Exam
Jul 28, 2020
Description
Search/Exam
Jul 28, 2020
Designation of inventor
Search/Exam
Jul 28, 2020
Drawings
Search/Exam
Jul 28, 2020
Request for grant of a European patent
Search/Exam
Jul 17, 2008
Priority document
Search/Exam
Feb 15, 2007