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The patent EP3510018 was granted to Chevron Phillips Chemical LP on Nov 1, 2023. The application was filed on Sep 7, 2017 under application number EP17785062A. 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 |
|---|---|---|---|
| STEINBACH | Jul 26, 2021 | ZIMMERMANN & PARTNER PATENTANWALTE MBB | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | US7989655 |
| INTERNATIONAL-SEARCH-REPORT | GB895993 |
| INTERNATIONAL-SEARCH-REPORT | US2012035291 |
| INTERNATIONAL-SEARCH-REPORT | US4135047 |
| INTERNATIONAL-SEARCH-REPORT | US4140604 |
| INTERNATIONAL-SEARCH-REPORT | US4443310 |
| OPPOSITION | US2012035291 |
| OPPOSITION | US2865965 |
| OPPOSITION | US3567608 |
| OPPOSITION | US4135047 |
| OPPOSITION | US4140604 |
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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Aug 11, 2025
Oct 6, 2023
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Refund of fees
Search/Exam
Jun 20, 2023
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Jun 14, 2023
(Electronic) Receipt
Appeal
Jun 14, 2023
Jun 14, 2023
Withdrawal of an appeal
Appeal
May 16, 2023
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Apr 26, 2023
(Electronic) Receipt
Appeal
Apr 26, 2023
(Electronic) Receipt
Appeal
Apr 26, 2023
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Notice of appeal
Appeal
Mar 6, 2023
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OPPO
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Document concerning representation
Search/Exam
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Oct 1, 2020
Decision to grant a European patent
Search/Exam
Jul 30, 2020
(Electronic) Receipt
Search/Exam
Jul 30, 2020
French translation of claims
Search/Exam
Jul 30, 2020
German translation of the claims
Search/Exam
Jul 30, 2020
Letter accompanying subsequently filed items
Search/Exam
Apr 3, 2020
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Intention to grant (signatures)
Search/Exam
Apr 3, 2020
Text intended for grant (clean copy)
Search/Exam
Apr 3, 2020
Mar 23, 2020
Examination started
Search/Exam
Nov 4, 2019
(Electronic) Receipt
Search/Exam
Nov 4, 2019
Nov 4, 2019
Amended claims with annotations
Search/Exam
Nov 4, 2019
Nov 4, 2019
Amended description with annotations
Search/Exam
Nov 4, 2019
Amendments received before examination
Search/Exam
Nov 4, 2019
Letter accompanying subsequently filed items
Search/Exam
Jun 19, 2019
Apr 25, 2019
Submission concerning representation
Search/Exam
Apr 23, 2019
Apr 17, 2019
Communication to designated inventor
Search/Exam
Mar 26, 2019
Mar 20, 2019
(Electronic) Receipt
Search/Exam
Mar 20, 2019
Request for entry into the European phase
Search/Exam
Jan 18, 2019
Information on entry into European phase
Search/Exam
Apr 4, 2018
Mar 15, 2018
Copy of the international search report
Search/Exam
Mar 15, 2018
Published international application - A1
Search/Exam
Nov 20, 2017
ISR: cited documents
PCTISA
Nov 17, 2017
Nov 17, 2017
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Oct 31, 2017
Sep 22, 2017
Abstract
PCTISA
Sep 22, 2017
Annex
PCTISA
Sep 22, 2017
Claims
PCTISA
Sep 22, 2017
Description
PCTISA
Sep 22, 2017
Drawings
PCTISA
Sep 22, 2017
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