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The patent EP3641819 was granted to GW Research on Oct 11, 2023. The application was filed on Jun 21, 2018 under application number EP18737374A. 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 |
|---|---|---|---|
| KRAUS & LEDERER PARTGMBB | Jul 9, 2024 | KRAUS & LEDERER PARTGMBB | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| EXAMINATION | US2016367496 |
| INTERNATIONAL-SEARCH-REPORT | CN104490873 |
| INTERNATIONAL-SEARCH-REPORT | WO2013168131 |
| INTERNATIONAL-SEARCH-REPORT | WO2016191651 |
| INTERNATIONAL-SEARCH-REPORT | WO2017204986 |
| INTERNATIONAL-SEARCH-REPORT | WO2018002637 |
| INTERNATIONAL-SEARCH-REPORT | WO2018002665 |
| OPPOSITION | US2016166515 |
| OPPOSITION | WO2016191651 |
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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Sep 14, 2023
Decision to grant a European patent
Search/Exam
Aug 30, 2023
(Electronic) Receipt
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Aug 30, 2023
Filing of the translations of the claims
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Aug 30, 2023
French translation of claims
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Aug 30, 2023
German translation of the claims
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Aug 30, 2023
Letter accompanying subsequently filed items
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Jun 23, 2023
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Intention to grant (signatures)
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Jun 23, 2023
Text intended for grant (clean copy)
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Jun 23, 2023
May 10, 2023
(Electronic) Receipt
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May 10, 2023
Amended claims with annotations
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May 10, 2023
Amended description with annotations
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May 10, 2023
Claims
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May 10, 2023
Description
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May 10, 2023
Letter accompanying subsequently filed items
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May 10, 2023
Mar 2, 2023
Annex to the communication
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Mar 2, 2023
Communication from the Examining Division
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Jun 7, 2022
(Electronic) Receipt
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Jun 7, 2022
Amended claims with annotations
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Jun 7, 2022
Claims
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Jun 7, 2022
Letter accompanying subsequently filed items
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Jun 7, 2022
Feb 11, 2022
Annex to the communication
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Feb 11, 2022
Communication from the Examining Division
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Feb 3, 2022
Examination started
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Nov 10, 2021
Document concerning representation
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Nov 10, 2021
Letter accompanying subsequently filed items
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Jul 24, 2020
(Electronic) Receipt
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Jul 24, 2020
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Amended claims with annotations
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Jul 24, 2020
Amendments received before examination
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Jul 24, 2020
Letter accompanying subsequently filed items
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Jun 4, 2020
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Communication to designated inventor
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Jan 28, 2020
Communication to designated inventor
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Jan 28, 2020
Communication to designated inventor
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Jan 28, 2020
Communication to designated inventor
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Communication to designated inventor
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Communication to designated inventor
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Communication to designated inventor
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Jan 8, 2020
Dec 9, 2019
Information regarding early processing
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Dec 2, 2019
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Notification of the recording of a change
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Nov 26, 2019
(Electronic) Receipt
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Nov 26, 2019
Request for entry into the European phase
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Nov 4, 2019
Information on entry into European phase
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Jan 17, 2019
Dec 27, 2018
Copy of the international search report
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Dec 27, 2018
Published international application - A1
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Sep 4, 2018
ISR: cited documents
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Abstract
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Jun 29, 2018
Claims
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Jun 29, 2018
Description
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Drawings
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