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The patent EP3901281 was granted to Illumina on Jul 30, 2025. The application was filed on Apr 4, 2016 under application number EP21164281A. 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 |
|---|---|---|---|
| JAMES POOLE | Aug 23, 2023 | CARPMAELS & RANSFORD | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
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| OPPOSITION | WO2013150083 |
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| OPPOSITION | WO2015031691 |
| OPPOSITION | WO2016138496 |
| SEARCH | WO2013150083 |
| SEARCH | WO2014060483 |
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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Authorisation
OPPO
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Authorisation
OPPO
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(Electronic) Receipt
Search/Exam
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Letter accompanying subsequently filed items
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Apr 17, 2023
Submission concerning representation
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Apr 14, 2023
(Electronic) Receipt
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Apr 14, 2023
Letter accompanying subsequently filed items
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Apr 14, 2023
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Decision to grant a European patent
Search/Exam
Oct 13, 2022
(Electronic) Receipt
Search/Exam
Oct 13, 2022
Filing of the translations of the claims
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Oct 13, 2022
French translation of claims
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Oct 13, 2022
German translation of the claims
Search/Exam
Oct 13, 2022
Letter accompanying subsequently filed items
Search/Exam
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Letter accompanying subsequently filed items
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Intention to grant (signatures)
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Jul 5, 2022
Text intended for grant (clean copy)
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Examination started
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Mar 7, 2022
(Electronic) Receipt
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Amended description with annotations
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Mar 7, 2022
Amendments received before examination
Search/Exam
Mar 7, 2022
Letter accompanying subsequently filed items
Search/Exam
Nov 2, 2021
Sep 29, 2021
Notification of forthcoming publication
Search/Exam
Sep 14, 2021
Refund of fees
Search/Exam
Sep 9, 2021
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European search opinion
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Sep 9, 2021
European search report
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Sep 9, 2021
Information on Search Strategy
Search/Exam
Aug 24, 2021
Search started
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Jun 17, 2021
(Electronic) Receipt
Search/Exam
Jun 17, 2021
(Electronic) Receipt
Search/Exam
Jun 17, 2021
Claims
Search/Exam
Jun 17, 2021
Letter accompanying subsequently filed items
Search/Exam
Jun 17, 2021
Letter concerning fees and payments
Search/Exam
Jun 17, 2021
Matter concerning the application
Search/Exam
Apr 21, 2021
Invitation to file claims
Search/Exam
Mar 23, 2021
Abstract
Search/Exam
Mar 23, 2021
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Annex
Search/Exam
Mar 23, 2021
Description
Search/Exam
Mar 23, 2021
Designation of inventor
Search/Exam
Mar 23, 2021
Drawings
Search/Exam
Mar 23, 2021
Oct 31, 2016