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The patent EP3198112 was granted to FMC DO Brasil Ltda on May 7, 2025. The application was filed on Sep 18, 2015 under application number EP15775607A. 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 |
|---|---|---|---|
| AKER SOLUTIONS | Jan 22, 2021 | ZACCO NORWAY | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| EXAMINATION | EP0429411 |
| EXAMINATION | GB2200723 |
| INTERNATIONAL-SEARCH-REPORT | EP0429411 |
| INTERNATIONAL-SEARCH-REPORT | US3957079 |
| INTERNATIONAL-SEARCH-REPORT | WO0008297 |
| INTERNATIONAL-SEARCH-REPORT | WO0052370 |
| INTERNATIONAL-SEARCH-REPORT | WO9833990 |
| OPPOSITION | US4711268 |
| OPPOSITION | US4757943 |
| OPPOSITION | US5277224 |
| OPPOSITION | US5832956 |
| OPPOSITION | US6293305 |
| OPPOSITION | WO9833990 |
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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Apr 10, 2025
Apr 10, 2025
Apr 2, 2025
Apr 2, 2025
Apr 2, 2025
Apr 2, 2025
Apr 2, 2025
Jan 14, 2025
Refund of fees
Appeal
Jan 10, 2025
Jan 10, 2025
Jan 10, 2025
Jan 10, 2025
Jan 7, 2025
Jan 2, 2025
Jan 2, 2025
Jan 2, 2025
Dec 23, 2024
(Electronic) Receipt
Appeal
Dec 23, 2024
Dec 23, 2024
Dec 23, 2024
Withdrawal of an appeal
Appeal
Sep 20, 2024
Sep 20, 2024
Jul 16, 2024
Jul 16, 2024
Jul 16, 2024
Jul 11, 2024
(Electronic) Receipt
Appeal
Jul 11, 2024
Jul 11, 2024
Jul 1, 2024
Jun 26, 2024
(Electronic) Receipt
Appeal
Jun 26, 2024
Jun 26, 2024
Jun 13, 2024
Jun 13, 2024
Jun 12, 2024
Jun 12, 2024
Jun 10, 2024
Jun 10, 2024
Jun 7, 2024
Nov 28, 2023
Nov 22, 2023
(Electronic) Receipt
Appeal
Nov 22, 2023
Nov 22, 2023
Reply to appeal
Appeal
Jul 12, 2023
Jul 7, 2023
(Electronic) Receipt
Appeal
Jul 7, 2023
Jul 7, 2023
Jul 7, 2023
Jul 7, 2023
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May 12, 2023
May 12, 2023
May 5, 2023
(Electronic) Receipt
Appeal
May 5, 2023
May 5, 2023
Notice of appeal
Appeal
Mar 10, 2023
Mar 10, 2023
Mar 10, 2023
Mar 9, 2023
Mar 9, 2023
Mar 9, 2023
Mar 9, 2023
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Means of redress
OPPO
Mar 9, 2023
Mar 9, 2023
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Mar 9, 2023
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Description
OPPO
Sep 22, 2022
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May 10, 2022
May 10, 2022
Nov 8, 2021
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Feb 3, 2021
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Feb 1, 2021
Jan 22, 2021
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Authorisation
OPPO
Jan 22, 2021
Jan 22, 2021
Jan 22, 2021
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May 6, 2020
Mar 26, 2020
Decision to grant a European patent
Search/Exam
Mar 10, 2020
(Electronic) Receipt
Search/Exam
Mar 10, 2020
Filing of the translations of the claims
Search/Exam
Mar 10, 2020
French translation of claims
Search/Exam
Mar 10, 2020
German translation of the claims
Search/Exam
Mar 10, 2020
Letter accompanying subsequently filed items
Search/Exam
Nov 11, 2019
Nov 11, 2019
Nov 11, 2019
Text intended for grant (clean copy)
Search/Exam
Nov 11, 2019
Nov 8, 2019
Intention to grant (signatures)
Search/Exam
Oct 30, 2019
Annex to the communication
Search/Exam
Oct 30, 2019
Consultation by telephone/in person
Search/Exam
Oct 30, 2019
Jul 2, 2019
(Electronic) Receipt
Search/Exam
Jul 2, 2019
Amended claims with annotations
Search/Exam
Jul 2, 2019
Amended description with annotations
Search/Exam
Jul 2, 2019
Claims
Search/Exam
Jul 2, 2019
Description
Search/Exam
Jul 2, 2019
Letter accompanying subsequently filed items
Search/Exam
Jul 2, 2019
Feb 20, 2019
Feb 20, 2019
Feb 20, 2019
Intention to grant (signatures)
Search/Exam
Feb 20, 2019
Text intended for grant (clean copy)
Search/Exam
Feb 20, 2019
Dec 12, 2018
(Electronic) Receipt
Search/Exam
Dec 12, 2018
Amended claims with annotations
Search/Exam
Dec 12, 2018
Amended description with annotations
Search/Exam
Dec 12, 2018
Claims
Search/Exam
Dec 12, 2018
Description
Search/Exam
Dec 12, 2018
Letter accompanying subsequently filed items
Search/Exam
Dec 12, 2018
Dec 9, 2018
(Electronic) Receipt
Search/Exam
Dec 9, 2018
Amended claims with annotations
Search/Exam
Dec 9, 2018
Amended description with annotations
Search/Exam
Dec 9, 2018
Claims
Search/Exam
Dec 9, 2018
Description
Search/Exam
Dec 9, 2018
Letter accompanying subsequently filed items
Search/Exam
Dec 9, 2018
Oct 24, 2018
Oct 19, 2018
(Electronic) Receipt
Search/Exam
Oct 19, 2018
Letter accompanying subsequently filed items
Search/Exam
Oct 19, 2018
Jun 11, 2018
Annex to the communication
Search/Exam
Jun 11, 2018
Communication from the Examining Division
Search/Exam
Jun 1, 2018
Examination started
Search/Exam
Feb 21, 2018
(Electronic) Receipt
Search/Exam
Feb 21, 2018
Letter accompanying subsequently filed items
Search/Exam
Feb 21, 2018
Dec 22, 2017
Nov 13, 2017
(Electronic) Receipt
Search/Exam
Nov 13, 2017
Nov 13, 2017
Amended claims with annotations
Search/Exam
Nov 13, 2017
Nov 13, 2017
Amended description with annotations
Search/Exam
Nov 13, 2017
Amendments received before examination
Search/Exam
Nov 13, 2017
Letter accompanying subsequently filed items
Search/Exam
Jul 5, 2017
May 4, 2017
May 2, 2017
Communication to designated inventor
Search/Exam
May 2, 2017
Communication to designated inventor
Search/Exam
May 2, 2017
Communication to designated inventor
Search/Exam
May 2, 2017
Communication to designated inventor
Search/Exam
Apr 10, 2017
Mar 22, 2017
(Electronic) Receipt
Search/Exam
Mar 22, 2017
Request for entry into the European phase
Search/Exam
Feb 3, 2017
Information on entry into European phase
Search/Exam
Aug 23, 2016
Notification of election of EPO
Search/Exam
Apr 19, 2016
Mar 31, 2016
Copy of the international search report
Search/Exam
Mar 31, 2016
Published international application - A1
Search/Exam
Dec 9, 2015
ISR: cited documents
PCTISA
Dec 8, 2015
Dec 8, 2015
Dec 8, 2015
Oct 20, 2015
Oct 7, 2015
Abstract
PCTISA
Oct 7, 2015
Claims
PCTISA
Oct 7, 2015
Description
PCTISA
Oct 7, 2015
Drawings
PCTISA
Oct 7, 2015
Oct 7, 2015
Oct 7, 2015
Oct 7, 2015
Oct 7, 2015