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The patent EP3552613 was granted to The University OF Tokyo on Apr 29, 2020. The application was filed on Jun 3, 2011 under application number EP19174499A. The patent is currently recorded with a legal status of "Opposition Rejected".

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 |
|---|---|---|---|
| POTTER CLARKSON | Jan 29, 2021 | POTTER CLARKSON | ADMISSIBLE |
| STRAWMAN | Jan 29, 2021 | BRAND MURRAY FULLER | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | US6368586 |
| OPPOSITION | JP2009084215 |
| OPPOSITION | WO2004085628 |
| OPPOSITION | WO2013080561 |
| SEARCH | DE102006062250 |
| SEARCH | EP1749538 |
| SEARCH | EP1955706 |
| SEARCH | WO2009050486 |
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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Refund of fees
Search/Exam
Apr 2, 2020
Decision to grant a European patent
Search/Exam
Mar 18, 2020
(Electronic) Receipt
Search/Exam
Mar 18, 2020
Filing of the translations of the claims
Search/Exam
Mar 18, 2020
French translation of claims
Search/Exam
Mar 18, 2020
German translation of the claims
Search/Exam
Mar 18, 2020
Letter accompanying subsequently filed items
Search/Exam
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Intention to grant (signatures)
Search/Exam
Feb 26, 2020
Text intended for grant (clean copy)
Search/Exam
Feb 26, 2020
Text intended for grant (sequence listing)
Search/Exam
Feb 26, 2020
Dec 17, 2019
Letter which had not been notified
Search/Exam
Dec 4, 2019
(Electronic) Receipt
Search/Exam
Dec 4, 2019
Amended description with annotations
Search/Exam
Dec 4, 2019
Description
Search/Exam
Dec 4, 2019
Letter accompanying subsequently filed items
Search/Exam
Dec 4, 2019
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Annex to the communication
Search/Exam
Nov 29, 2019
Communication from the Examining Division
Search/Exam
Nov 8, 2019
Annex to the communication
Search/Exam
Nov 8, 2019
Consultation by telephone/in person
Search/Exam
Nov 8, 2019
Oct 29, 2019
(Electronic) Receipt
Search/Exam
Oct 29, 2019
Amended description with annotations
Search/Exam
Oct 29, 2019
Description
Search/Exam
Oct 29, 2019
Letter accompanying subsequently filed items
Search/Exam
Oct 29, 2019
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Communication to designated inventor
Search/Exam
Sep 25, 2019
(Electronic) Receipt
Search/Exam
Sep 25, 2019
Letter concerning the inventor
Search/Exam
Sep 18, 2019
Notification of forthcoming publication
Search/Exam
Sep 9, 2019
Sep 4, 2019
Letter which had not been notified
Search/Exam
Aug 19, 2019
Annex to the communication
Search/Exam
Aug 19, 2019
Communication from the Examining Division
Search/Exam
Jul 31, 2019
Refund of fees
Search/Exam
Jul 26, 2019
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European search report
Search/Exam
Jul 26, 2019
Information on Search Strategy
Search/Exam
Jul 5, 2019
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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May 14, 2019
Abstract
Search/Exam
May 14, 2019
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Claims
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May 14, 2019
Converted Sequence Listing
Search/Exam
May 14, 2019
Description
Search/Exam
May 14, 2019
Designation of inventor
Search/Exam
May 14, 2019
Drawings
Search/Exam
May 14, 2019
Request for grant of a European patent
Search/Exam
Dec 28, 2011
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