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The patent EP3274601 was granted to Mathread on Apr 21, 2021. The application was filed on Mar 2, 2016 under application number EP16718933A. 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 |
|---|---|---|---|
| SOMMER | Jan 19, 2022 | FLUGEL PREISSNER SCHOBER SEIDEL | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
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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Dec 9, 2025
Dec 7, 2025
(Electronic) Receipt
Appeal
Dec 7, 2025
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(Electronic) Receipt
Appeal
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Appeal
Sep 9, 2024
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Appeal
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Appeal
Sep 9, 2024
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Appeal
Sep 9, 2024
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Appeal
Sep 9, 2024
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Appeal
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Appeal
Sep 9, 2024
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Appeal
Sep 9, 2024
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Appeal
Sep 9, 2024
Claims
Appeal
Sep 9, 2024
Claims
Appeal
Sep 9, 2024
Claims
Appeal
Sep 9, 2024
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Reply to appeal
Appeal
May 8, 2024
Apr 30, 2024
(Electronic) Receipt
Appeal
Apr 30, 2024
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Feb 29, 2024
(Electronic) Receipt
Appeal
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Notice of appeal
Appeal
Jan 2, 2024
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Means of redress
OPPO
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May 4, 2021
Mar 25, 2021
Decision to grant a European patent
Search/Exam
Jan 26, 2021
(Electronic) Receipt
Search/Exam
Jan 26, 2021
Filing of the translations of the claims
Search/Exam
Jan 26, 2021
French translation of claims
Search/Exam
Jan 26, 2021
German translation of the claims
Search/Exam
Jan 26, 2021
Letter accompanying subsequently filed items
Search/Exam
Jan 22, 2021
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Observations by third parties
Search/Exam
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Observations by third parties
Search/Exam
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Intention to grant (signatures)
Search/Exam
Nov 25, 2020
Text intended for grant (clean copy)
Search/Exam
Nov 25, 2020
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Examination started
Search/Exam
Jul 2, 2020
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Observations by third parties
Search/Exam
May 17, 2018
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Communication to designated inventor
Search/Exam
Oct 26, 2017
(Electronic) Receipt
Search/Exam
Oct 26, 2017
Abstract
Search/Exam
Oct 26, 2017
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Amended claims with annotations
Search/Exam
Oct 26, 2017
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Amended description with annotations
Search/Exam
Oct 26, 2017
Amendments received before examination
Search/Exam
Oct 26, 2017
Request for entry into the European phase
Search/Exam
Oct 17, 2017
Aug 11, 2017
Information on entry into European phase
Search/Exam
Oct 27, 2016
Oct 6, 2016
Copy of the international search report
Search/Exam
Oct 6, 2016
Published international application - A1
Search/Exam
Jul 1, 2016
ISR: cited documents
PCTISA
Jun 29, 2016
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May 19, 2016
Annex
PCTISA
May 19, 2016
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May 10, 2016
Apr 28, 2016
Abstract
PCTISA
Apr 28, 2016
Annex
PCTISA
Apr 28, 2016
Annex
PCTISA
Apr 28, 2016
Claims
PCTISA
Apr 28, 2016
Description
PCTISA
Apr 28, 2016
Drawings
PCTISA
Apr 28, 2016
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Mar 30, 2016
Annex
PCTISA
Mar 30, 2016
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