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The patent EP3444974 was granted to Rohde & Schwarz on Jun 11, 2025. The application was filed on Oct 10, 2017 under application number EP17195598A. 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 |
|---|---|---|---|
| FREQUENTIS | Mar 28, 2023 | WILDHACK & JELLINEK PATENTANWALTE | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | US8085678 |
| EXAMINATION | US2004076191 |
| EXAMINATION | US2010278140 |
| EXAMINATION | US7058568 |
| OPPOSITION | US2004076191 |
| OPPOSITION | US2010278140 |
| OPPOSITION | US8085678 |
| SEARCH | US8085678 |
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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(Electronic) Receipt
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Jun 10, 2022
Letter accompanying subsequently filed items
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Jun 10, 2022
Request for correction of the publication
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Jun 2, 2022
Decision to grant a European patent
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May 19, 2022
(Electronic) Receipt
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May 19, 2022
Filing of the translations of the claims
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May 19, 2022
French translation of claims
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May 19, 2022
German translation of the claims
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May 19, 2022
Letter accompanying subsequently filed items
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May 5, 2022
(Electronic) Receipt
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May 5, 2022
Letter accompanying subsequently filed items
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May 5, 2022
Letter concerning fees and payments
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Apr 19, 2022
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Intention to grant (signatures)
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Apr 19, 2022
Text intended for grant (clean copy)
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(Electronic) Receipt
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Mar 11, 2022
Amended claims with annotations
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Mar 11, 2022
Amended description with annotations
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Mar 11, 2022
Claims
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Mar 11, 2022
Description
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Mar 11, 2022
Letter accompanying subsequently filed items
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Mar 11, 2022
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Annex to the communication
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Feb 14, 2022
Communication from the Examining Division
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Oct 22, 2021
Oct 19, 2021
Annexes in respect of a client data request
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Oct 19, 2021
Letter accompanying subsequently filed items
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Oct 19, 2021
Aug 26, 2021
(Electronic) Receipt
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Aug 26, 2021
Amended claims with annotations
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Aug 26, 2021
Claims
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Aug 26, 2021
Letter accompanying subsequently filed items
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Aug 26, 2021
Apr 8, 2021
Annex to the communication
Search/Exam
Apr 8, 2021
Communication from the Examining Division
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Feb 15, 2021
(Electronic) Receipt
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Feb 15, 2021
Amended claims with annotations
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Feb 15, 2021
Amended description with annotations
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Feb 15, 2021
Claims
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Feb 15, 2021
Description
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Feb 15, 2021
Letter accompanying subsequently filed items
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Feb 15, 2021
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Annex to the communication
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(Electronic) Receipt
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Oct 30, 2020
Amended claims with annotations
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Oct 30, 2020
Claims
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Oct 30, 2020
Letter accompanying subsequently filed items
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Oct 30, 2020
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Annex to the communication
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Aug 31, 2020
Communication from the Examining Division
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Aug 21, 2020
(Electronic) Receipt
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Aug 21, 2020
Amended claims with annotations
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Aug 21, 2020
Claims
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Aug 21, 2020
Letter accompanying subsequently filed items
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Aug 21, 2020
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Annex to a communication
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Annex to the communication
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Communication from the Examining Division
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Apr 8, 2020
Examination started
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Jan 7, 2020
(Electronic) Receipt
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Jan 7, 2020
Letter accompanying subsequently filed items
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Jan 7, 2020
Letter concerning the inventor
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Feb 25, 2019
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Notification of forthcoming publication
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Sep 14, 2018
(Electronic) Receipt
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Sep 14, 2018
Sep 14, 2018
Amended claims with annotations
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Sep 14, 2018
Amendments received before examination
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Sep 14, 2018
Letter accompanying subsequently filed items
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Aug 9, 2018
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Letter which had not been notified
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Aug 3, 2018
Letter which had not been notified
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Communication to designated inventor
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Communication to designated inventor
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Jul 13, 2018
(Electronic) Receipt
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Jul 13, 2018
Letter accompanying subsequently filed items
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Jul 13, 2018
Letter concerning the inventor
Search/Exam
Apr 30, 2018
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Letter which had not been notified
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Apr 19, 2018
Letter which had not been notified
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Apr 5, 2018
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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European search opinion
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Mar 27, 2018
European search report
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Mar 27, 2018
Information on Search Strategy
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Mar 26, 2018
Designation of inventor
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Mar 26, 2018
Letter concerning the inventor
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Mar 15, 2018
Search started
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Jan 9, 2018
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Deficiency in designation of inventor
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Oct 10, 2017
Abstract
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Oct 10, 2017
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Claims
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Oct 10, 2017
Description
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Oct 10, 2017
Drawings
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Oct 10, 2017
Request for grant of a European patent
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