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The patent EP3274600 was granted to Mathread on Apr 21, 2021. The application was filed on Mar 2, 2016 under application number EP16713162A. 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 20, 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
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Appeal
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Claims
Appeal
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Appeal
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Appeal
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Appeal
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Appeal
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Appeal
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Appeal
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Appeal
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Appeal
Aug 16, 2024
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Appeal
Aug 16, 2024
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Appeal
Aug 16, 2024
Claims
Appeal
Aug 16, 2024
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Reply to appeal
Appeal
Apr 16, 2024
Apr 8, 2024
(Electronic) Receipt
Appeal
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(Electronic) Receipt
Appeal
Feb 8, 2024
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Notice of appeal
Appeal
Dec 14, 2023
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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
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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
Oct 26, 2017
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
Modified abstract
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
May 30, 2016
ISR: cited documents
PCTISA
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Mar 31, 2016
Annex
PCTISA
Mar 31, 2016
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Mar 21, 2016
Abstract
PCTISA
Mar 21, 2016
Annex
PCTISA
Mar 21, 2016
Claims
PCTISA
Mar 21, 2016
Description
PCTISA
Mar 21, 2016
Drawings
PCTISA
Mar 21, 2016
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