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The patent EP3175490 was granted to Chirp Microsystems on Mar 12, 2025. The application was originally filed on Jul 31, 2015 under application number EP15827176A. 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.
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | US2013088941 |
| INTERNATIONAL-SEARCH-REPORT | US2006202885 |
| INTERNATIONAL-SEARCH-REPORT | US2010309225 |
| INTERNATIONAL-SEARCH-REPORT | US2012242400 |
| INTERNATIONAL-SEARCH-REPORT | US7281082 |
| OPPOSITION | US2012250897 |
| OPPOSITION | WO2011042748 |
| SEARCH | DE102012222334 |
| SEARCH | DE2335613 |
| SEARCH | US2013088941 |
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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Feb 13, 2025
Feb 13, 2025
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Means of redress
OPPO
Jul 23, 2024
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Dec 19, 2023
Letter accompanying subsequently filed items
Search/Exam
Dec 19, 2023
Nov 21, 2023
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May 26, 2023
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Apr 12, 2022
Mar 28, 2022
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Mar 3, 2022
Decision to grant a European patent
Search/Exam
Feb 25, 2022
Feb 18, 2022
(Electronic) Receipt
Search/Exam
Feb 18, 2022
Annexes in respect of a client data request
Search/Exam
Feb 18, 2022
Letter accompanying subsequently filed items
Search/Exam
Feb 18, 2022
Jan 19, 2022
Dec 9, 2021
Oct 27, 2021
Oct 21, 2021
(Electronic) Receipt
Search/Exam
Oct 21, 2021
Filing of the translations of the claims
Search/Exam
Oct 21, 2021
French translation of claims
Search/Exam
Oct 21, 2021
German translation of the claims
Search/Exam
Oct 21, 2021
Letter accompanying subsequently filed items
Search/Exam
Sep 28, 2021
Sep 28, 2021
Sep 28, 2021
Text intended for grant (clean copy)
Search/Exam
Sep 28, 2021
Jul 29, 2021
(Electronic) Receipt
Search/Exam
Jul 29, 2021
Amended claims with annotations
Search/Exam
Jul 29, 2021
Amended description with annotations
Search/Exam
Jul 29, 2021
Amended drawings with annotations
Search/Exam
Jul 29, 2021
Claims
Search/Exam
Jul 29, 2021
Description
Search/Exam
Jul 29, 2021
Drawings
Search/Exam
Jul 29, 2021
Letter accompanying subsequently filed items
Search/Exam
Jul 29, 2021
Mar 30, 2021
Mar 30, 2021
Mar 30, 2021
Mar 30, 2021
Intention to grant (signatures)
Search/Exam
Mar 30, 2021
Text intended for grant (clean copy)
Search/Exam
Mar 30, 2021
Mar 12, 2021
Examination started
Search/Exam
Feb 11, 2019
(Electronic) Receipt
Search/Exam
Feb 11, 2019
Feb 11, 2019
Amended claims with annotations
Search/Exam
Feb 11, 2019
Feb 11, 2019
Amended description with annotations
Search/Exam
Feb 11, 2019
Feb 11, 2019
Amendments received before examination
Search/Exam
Feb 11, 2019
Letter accompanying subsequently filed items
Search/Exam
Aug 2, 2018
Jul 16, 2018
Jul 16, 2018
European search opinion
Search/Exam
Jul 16, 2018
Information on Search Strategy
Search/Exam
Jul 16, 2018
Supplementary European search report
Search/Exam
May 14, 2018
(Electronic) Receipt
Search/Exam
May 14, 2018
Letter accompanying subsequently filed items
Search/Exam
May 14, 2018
Letter concerning search matters
Search/Exam
Mar 2, 2018
Mar 2, 2018
Information on Search Strategy
Search/Exam
Mar 2, 2018
Partial European search report
Search/Exam
Mar 2, 2018
Feb 19, 2018
Search started
Search/Exam
Aug 4, 2017
Jul 31, 2017
May 10, 2017
Mar 8, 2017
Mar 6, 2017
Communication to designated inventor
Search/Exam
Mar 6, 2017
Communication to designated inventor
Search/Exam
Mar 6, 2017
Communication to designated inventor
Search/Exam
Mar 6, 2017
Communication to designated inventor
Search/Exam
Mar 6, 2017
Communication to designated inventor
Search/Exam
Feb 22, 2017
Feb 8, 2017
(Electronic) Receipt
Search/Exam
Feb 8, 2017
Feb 8, 2017
Amended claims with annotations
Search/Exam
Feb 8, 2017
Amendments received before examination
Search/Exam
Feb 8, 2017
Request for entry into the European phase
Search/Exam
Dec 9, 2016
Information on entry into European phase
Search/Exam
Feb 22, 2016
Feb 4, 2016
Copy of the international search report
Search/Exam
Feb 4, 2016
Published international application - A1
Search/Exam