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The patent EP3481775 was granted to Lhoist Recherche ET Dveloppement on Jun 24, 2020. The application was filed on Jul 7, 2017 under application number EP17740709A. 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 |
|---|---|---|---|
| FELS VERTRIEBS UND SERVICE | Mar 24, 2021 | MAIKOWSKI & NINNEMANN PATENTANWALTE PARTNERSCHAFT MBB | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | US3649248 |
| DESCRIPTION | US3771999 |
| DESCRIPTION | US5186742 |
| DESCRIPTION | WO2015007661 |
| INTERNATIONAL-SEARCH-REPORT | EP2199417 |
| INTERNATIONAL-SEARCH-REPORT | EP3042965 |
| INTERNATIONAL-SEARCH-REPORT | US3649248 |
| INTERNATIONAL-SEARCH-REPORT | US5186742 |
| INTERNATIONAL-SEARCH-REPORT | WO03012154 |
| INTERNATIONAL-SEARCH-REPORT | WO2015007661 |
| OPPOSITION | DE19964163 |
| OPPOSITION | DE2019553 |
| OPPOSITION | EP3042965 |
| OPPOSITION | GB917967 |
| OPPOSITION | JP2002309312 |
| OPPOSITION | JP2013087350 |
| OPPOSITION | RU2175987 |
| OPPOSITION | US3309196 |
| OPPOSITION | US3721548 |
| OPPOSITION | WO2015007661 |
| OPPOSITION | WO2015082093 |
| OPPOSITION | WO2016110574 |
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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Jul 6, 2020
Jul 1, 2020
Refund of fees
Search/Exam
May 28, 2020
Decision to grant a European patent
Search/Exam
May 19, 2020
(Electronic) Receipt
Search/Exam
May 19, 2020
English translation of the claims
Search/Exam
May 19, 2020
German translation of the claims
Search/Exam
May 19, 2020
Letter accompanying subsequently filed items
Search/Exam
Feb 28, 2020
Feb 28, 2020
Feb 28, 2020
Intention to grant (signatures)
Search/Exam
Feb 28, 2020
Text intended for grant (clean copy)
Search/Exam
Feb 28, 2020
Jan 17, 2020
Examination started
Search/Exam
Apr 17, 2019
Feb 28, 2019
Feb 15, 2019
Feb 13, 2019
Communication to designated inventor
Search/Exam
Feb 13, 2019
Communication to designated inventor
Search/Exam
Feb 8, 2019
Priority search results copy provided by EPO
Search/Exam
Jan 17, 2019
Jan 17, 2019
Jan 11, 2019
Jan 11, 2019
Matter concerning the application
Search/Exam
Jan 11, 2019
Priority document
Search/Exam
Jan 8, 2019
Jan 8, 2019
Notification of the recording of a change
Search/Exam
Dec 10, 2018
(Electronic) Receipt
Search/Exam
Dec 10, 2018
Dec 10, 2018
Amended claims with annotations
Search/Exam
Dec 10, 2018
Dec 10, 2018
Amendments received before examination
Search/Exam
Dec 10, 2018
Request for entry into the European phase
Search/Exam
Nov 19, 2018
(Electronic) Receipt
PCTRO
Nov 16, 2018
Information on entry into European phase
Search/Exam
Jun 22, 2018
Jun 22, 2018
Jun 22, 2018
Jun 22, 2018
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Jun 7, 2018
Copy of the international search report
Search/Exam
Jun 7, 2018
Copy of the international search report
Search/Exam
Jun 7, 2018
Published international application - A9
Search/Exam
May 29, 2018
Notification of election of EPO
Search/Exam
May 22, 2018
May 11, 2018
May 4, 2018
May 4, 2018
PCT demand form
PCT2
May 4, 2018
May 4, 2018
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Apr 25, 2018
Apr 17, 2018
Mar 14, 2018
Annex
PCTISA
Mar 14, 2018
Mar 14, 2018
Mar 14, 2018
Mar 14, 2018
Jan 30, 2018
Jan 11, 2018
Copy of the international search report
Search/Exam
Jan 11, 2018
Copy of the international search report
Search/Exam
Jan 11, 2018
Published international application - A1
Search/Exam
Jan 10, 2018
Dec 5, 2017
Nov 30, 2017
Nov 30, 2017
Oct 27, 2017
(Electronic) Receipt
PCTRO
Oct 27, 2017
Oct 27, 2017
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Oct 19, 2017
ISR: cited documents
PCTISA
Oct 19, 2017
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Sep 14, 2017
Aug 29, 2017
Aug 1, 2017
Aug 1, 2017
Jul 28, 2017
Jul 7, 2017
(Electronic) Receipt
PCTRO
Jul 7, 2017
Abstract
PCTRO
Jul 7, 2017
Claims
PCTRO
Jul 7, 2017
Description
PCTRO
Jul 7, 2017
Jul 7, 2017
Drawings
PCTRO
Jul 7, 2017