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The patent EP3811838 was granted to Bissell on Aug 20, 2025. The application was filed on Feb 24, 2020 under application number EP20210505A. 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 |
|---|---|---|---|
| VAX TECHTRONIC CORDLESS GP | Jun 20, 2023 | FORRESTERS | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | WO2019US38423 |
| DESCRIPTION | WO2019US57196 |
| DESCRIPTION | US10092155 |
| DESCRIPTION | US2018110388 |
| DESCRIPTION | US2018116476 |
| DESCRIPTION | US2018368646 |
| DESCRIPTION | US7228589 |
| OPPOSITION | CN110192806 |
| OPPOSITION | EP3409167 |
| OPPOSITION | US2007016328 |
| SEARCH | CN108553035 |
| SEARCH | CN2128519Y |
| SEARCH | GB2377624 |
| SEARCH | US2018110388 |
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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Description
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Aug 25, 2022
Decision to grant a European patent
Search/Exam
Aug 12, 2022
(Electronic) Receipt
Search/Exam
Aug 12, 2022
Filing of the translations of the claims
Search/Exam
Aug 12, 2022
French translation of claims
Search/Exam
Aug 12, 2022
German translation of the claims
Search/Exam
Aug 12, 2022
Letter accompanying subsequently filed items
Search/Exam
Apr 25, 2022
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Intention to grant (signatures)
Search/Exam
Apr 25, 2022
Text intended for grant (clean copy)
Search/Exam
Apr 25, 2022
Mar 4, 2022
Examination started
Search/Exam
Oct 26, 2021
(Electronic) Receipt
Search/Exam
Oct 26, 2021
Letter accompanying subsequently filed items
Search/Exam
Oct 26, 2021
Maintenance of the application
Search/Exam
May 3, 2021
Mar 31, 2021
Notification of forthcoming publication
Search/Exam
Mar 17, 2021
Refund of fees
Search/Exam
Mar 16, 2021
Mar 16, 2021
European search opinion
Search/Exam
Mar 16, 2021
European search report
Search/Exam
Mar 16, 2021
Information on Search Strategy
Search/Exam
Mar 3, 2021
Search started
Search/Exam
Feb 12, 2021
Communication to designated inventor
Search/Exam
Feb 12, 2021
Communication to designated inventor
Search/Exam
Feb 12, 2021
Communication to designated inventor
Search/Exam
Feb 12, 2021
Communication to designated inventor
Search/Exam
Nov 29, 2020
Abstract
Search/Exam
Nov 29, 2020
Nov 29, 2020
Claims
Search/Exam
Nov 29, 2020
Description
Search/Exam
Nov 29, 2020
Designation of inventor
Search/Exam
Nov 29, 2020
Drawings
Search/Exam
Nov 29, 2020
Request for grant of a European patent
Search/Exam
Mar 26, 2020