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The patent EP3573810 was granted to Sabic on Apr 16, 2025. The application was filed on Jan 22, 2018 under application number EP18701319A. 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 |
|---|---|---|---|
| GEORG FISCHER ROHRLEITUNGSSYSTEME | Mar 29, 2022 | PATENT UND RECHTSANWALTE BEHRMANN WAGNER PARTG MBB | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | US6325959 |
| DESCRIPTION | WO2007003530 |
| EXAMINATION | WO0021732 |
| INTERNATIONAL-SEARCH-REPORT | CN104277312 |
| INTERNATIONAL-SEARCH-REPORT | US6325959 |
| INTERNATIONAL-SEARCH-REPORT | WO2014072056 |
| OPPOSITION | CA2457430 |
| OPPOSITION | CN104277312 |
| OPPOSITION | EP0707040 |
| OPPOSITION | JPH0994867 |
| OPPOSITION | US2015025195 |
| OPPOSITION | US5338589 |
| OPPOSITION | US6325959 |
| OPPOSITION | US6770341 |
| OPPOSITION | WO0021732 |
| OPPOSITION | WO03033586 |
| OPPOSITION | WO2014072056 |
| OPPOSITION | WO2016005044 |
| OPPOSITION | WO9319924 |
| OPPOSITION | WO9719807 |
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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Description
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Mar 20, 2025
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Refund of fees
Appeal
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(Electronic) Receipt
Appeal
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Withdrawal of an appeal
Appeal
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(Electronic) Receipt
Appeal
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Notice of appeal
Appeal
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Decision to grant a European patent
Search/Exam
May 20, 2021
(Electronic) Receipt
Search/Exam
May 20, 2021
French translation of claims
Search/Exam
May 20, 2021
German translation of the claims
Search/Exam
May 20, 2021
Letter accompanying subsequently filed items
Search/Exam
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Intention to grant (signatures)
Search/Exam
Feb 26, 2021
Text intended for grant (clean copy)
Search/Exam
Feb 26, 2021
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(Electronic) Receipt
Search/Exam
Nov 3, 2020
Amended claims with annotations
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Nov 3, 2020
Claims
Search/Exam
Nov 3, 2020
Letter accompanying subsequently filed items
Search/Exam
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Annex to a communication
Search/Exam
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Annex to the communication
Search/Exam
Jul 2, 2020
Communication from the Examining Division
Search/Exam
Jun 19, 2020
Examination started
Search/Exam
Mar 9, 2020
(Electronic) Receipt
Search/Exam
Mar 9, 2020
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Amended claims with annotations
Search/Exam
Mar 9, 2020
Amendments received before examination
Search/Exam
Mar 9, 2020
Letter accompanying subsequently filed items
Search/Exam
Nov 6, 2019
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Communication to designated inventor
Search/Exam
Aug 30, 2019
Communication to designated inventor
Search/Exam
Aug 27, 2019
Priority search results copy provided by EPO
Search/Exam
Aug 12, 2019
Jul 14, 2019
(Electronic) Receipt
Search/Exam
Jul 14, 2019
Annex
Search/Exam
Jul 14, 2019
Request for entry into the European phase
Search/Exam
Jun 7, 2019
Information on entry into European phase
Search/Exam
Aug 22, 2018
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Copy of the international search report
Search/Exam
Aug 2, 2018
Published international application - A1
Search/Exam
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(Electronic) Receipt
PCTRO
Jan 22, 2018
Abstract
PCTRO
Jan 22, 2018
Claims
PCTRO
Jan 22, 2018
Description
PCTRO
Jan 22, 2018
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Drawings
PCTRO