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The patent EP3495432 was granted to PRC Desoto on Aug 19, 2020. The application was filed on Mar 3, 2016 under application number EP19154237A. The patent is currently recorded with a legal status of "Revoked".

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 |
|---|---|---|---|
| NEDERLANDSCH OCTROOIBUREAU | May 18, 2021 | NEDERLANDSCH OCTROOIBUREAU | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | US2010010133 |
| DESCRIPTION | US2010041839 |
| DESCRIPTION | US2011319559 |
| DESCRIPTION | US2012040103 |
| DESCRIPTION | US2012040104 |
| DESCRIPTION | US2013284359 |
| DESCRIPTION | US2013344287 |
| DESCRIPTION | US2013345372 |
| DESCRIPTION | US2014040103 |
| DESCRIPTION | US2014186543 |
| DESCRIPTION | US2015086726 |
| DESCRIPTION | US4366307 |
| DESCRIPTION | US4609762 |
| DESCRIPTION | US5225472 |
| DESCRIPTION | US6172179 |
| DESCRIPTION | US6525168 |
| DESCRIPTION | US7438974 |
| DESCRIPTION | US8513339 |
| OPPOSITION | AU2006203656 |
| OPPOSITION | GB952991 |
| OPPOSITION | JP2000256620 |
| OPPOSITION | JPS5525431 |
| OPPOSITION | US2001036554 |
| OPPOSITION | US2003049486 |
| OPPOSITION | US2006275616 |
| OPPOSITION | US2009162631 |
| OPPOSITION | US2010191001 |
| OPPOSITION | US3022196 |
| OPPOSITION | US3847860 |
| OPPOSITION | US3961977 |
| OPPOSITION | US4167537 |
| OPPOSITION | US4278783 |
| OPPOSITION | US6172179 |
| SEARCH | US2008268261 |
| SEARCH | US2014069293 |
| SEARCH | US2014275461 |
| SEARCH | US4389432 |
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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Decision to grant a European patent
Search/Exam
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(Electronic) Receipt
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Filing of the translations of the claims
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French translation of claims
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German translation of the claims
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Letter accompanying subsequently filed items
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Intention to grant (signatures)
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Text intended for grant (clean copy)
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Examination started
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(Electronic) Receipt
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Oct 15, 2019
Letter accompanying subsequently filed items
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Reply to Written Opinion prepared by the EPO
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Notification of forthcoming publication
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Letter which had not been notified
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Apr 5, 2019
Refund of fees
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European search opinion
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European search report
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Information on Search Strategy
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Communication to designated inventor
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Communication to designated inventor
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Communication to designated inventor
Search/Exam
Mar 12, 2019
Search started
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(Electronic) Receipt
Search/Exam
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Abstract
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Claims
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Description
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Designation of inventor
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Drawings
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Letter accompanying subsequently filed items
Search/Exam
Jan 29, 2019
Request for grant of a European patent
Search/Exam
Oct 6, 2016