Recycling Method For Styrene-Containing Plastic Waste

Patent No. EP3635043 (titled "Recycling Method For Styrene-Containing Plastic Waste") was filed by Ineos Styrolution Group on Jun 5, 2018. The application was issued on Feb 15, 2023.

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
BOREALIS	Nov 15, 2023	TBK

Dossier Documents

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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Sep 10, 2025
Communication to the parties concerning the termination of the opposition proceedings (opponent)
Sep 10, 2025
Communication to the parties concerning the termination of the opposition proceedings (proprietor)
Jul 2, 2025
Communication for party to proceedings/third party
Jun 25, 2025
Annex
Jun 25, 2025
Annexes in respect of a client data request
Jun 25, 2025
Annexes in respect of a client data request
Jun 25, 2025
Annexes in respect of a client data request
Jun 25, 2025
Letter accompanying subsequently filed items
Jun 25, 2025
Miscellaneous requests concerning client data
Jun 6, 2025
Annex to the communication - opposition
Jun 6, 2025
Brief communication - Opposition proceedings
Jun 6, 2025
Brief communication - Opposition proceedings
Jun 6, 2025
Decision of the Opposition Division and instruction
Jun 6, 2025
Decision revoking the European patent
Jun 6, 2025
Decision revoking the European patent
Jun 6, 2025
Grounds for the decision (Annex) - opposition
Jun 6, 2025
Means of redress
Jun 6, 2025
Minutes of the oral proceedings (Opposition Division) - conclusion of the proceedings
Jun 6, 2025
Minutes of the oral proceedings (Opposition Division) - introduction of the parties
Jun 6, 2025
Provision of a copy of the minutes - opposition procedure
Jun 6, 2025
Provision of a copy of the minutes - opposition procedure
Jun 6, 2025
Scanned annex to a communication - opposition procedure
Jun 6, 2025
Scanned annex to a communication - opposition procedure
Jun 6, 2025
Scanned annex to a communication - opposition procedure
May 14, 2025
Information about the result of oral proceedings
Apr 23, 2025
(Electronic) Receipt
Apr 23, 2025
Letter accompanying subsequently filed items
Apr 16, 2025
Brief communication - Opposition proceedings
Mar 18, 2025
Brief communication - Opposition proceedings
Mar 13, 2025
(Electronic) Receipt
Mar 13, 2025
Letter accompanying subsequently filed items
Mar 13, 2025
Written submission in preparation to/during oral proceedings
Oct 18, 2024
Brief communication - Opposition proceedings
Oct 15, 2024
(Electronic) Receipt
Oct 15, 2024
Letter accompanying subsequently filed items
Oct 15, 2024
Request for interpreters during oral proceedings
Oct 7, 2024
Brief communication - Opposition proceedings
Oct 1, 2024
(Electronic) Receipt
Oct 1, 2024
Auxiliary request during Opposition procedure
Oct 1, 2024
Auxiliary request during Opposition procedure
Oct 1, 2024
Auxiliary request during Opposition procedure
Oct 1, 2024
Auxiliary request during Opposition procedure
Oct 1, 2024
Auxiliary request during Opposition procedure - 04
Oct 1, 2024
Auxiliary request during Opposition procedure - 05
Oct 1, 2024
Auxiliary request during Opposition procedure - 06
Oct 1, 2024
Auxiliary request during Opposition procedure - 07
Oct 1, 2024
Letter accompanying subsequently filed items
Oct 1, 2024
Written submission in preparation to/during oral proceedings
Apr 30, 2024
Annex to the communication - opposition
Apr 30, 2024
Brief communication - Opposition proceedings
Apr 30, 2024
Brief communication - Opposition proceedings
Apr 30, 2024
Information concerning oral proceedings
Apr 30, 2024
Scanned annex to a communication - opposition procedure
Apr 30, 2024
Summons to attend oral proceedings
Apr 30, 2024
Summons to attend oral proceedings
Apr 5, 2024
Brief communication - Opposition proceedings
Apr 2, 2024
(Electronic) Receipt
Apr 2, 2024
Auxiliary request during Opposition procedure
Apr 2, 2024
Auxiliary request during Opposition procedure
Apr 2, 2024
Auxiliary request during Opposition procedure
Apr 2, 2024
Auxiliary request during Opposition procedure
Apr 2, 2024
Auxiliary request during Opposition procedure
Apr 2, 2024
Auxiliary request during Opposition procedure - 01
Apr 2, 2024
Auxiliary request during Opposition procedure - 02
Apr 2, 2024
Auxiliary request during Opposition procedure - 03
Apr 2, 2024
Auxiliary request during Opposition procedure - 04
Apr 2, 2024
Auxiliary request during Opposition procedure - 05
Apr 2, 2024
Letter accompanying subsequently filed items
Apr 2, 2024
Reply of the patent proprietor to the notice(s) of opposition
Nov 29, 2023
Communication of a notice of opposition and request to file observations
Nov 29, 2023
Notice of further oppositions to opponent(s)
Nov 21, 2023
Communication of a notice of opposition - first information to patent proprietor
Nov 15, 2023
(Electronic) Receipt
Nov 15, 2023
Citation in opposition procedure
Nov 15, 2023
Citation in opposition procedure - 001
Nov 15, 2023
Citation in opposition procedure - 002
Nov 15, 2023
Citation in opposition procedure - 003
Nov 15, 2023
Citation in opposition procedure - 004
Nov 15, 2023
Citation in opposition procedure - 005
Nov 15, 2023
Citation in opposition procedure - 006
Nov 15, 2023
Citation in opposition procedure - 007
Nov 15, 2023
Citation in opposition procedure - 008
Nov 15, 2023
Citation in opposition procedure - 009
Nov 15, 2023
Citation in opposition procedure - 010
Nov 15, 2023
Citation in opposition procedure - 011
Nov 15, 2023
Citation in opposition procedure - 012
Nov 15, 2023
Citation in opposition procedure - 013
Nov 15, 2023
Citation in opposition procedure - 014
Nov 15, 2023
Citation in opposition procedure - 014
Nov 15, 2023
Citation in opposition procedure - 015
Nov 15, 2023
Citation in opposition procedure - 016
Nov 15, 2023
Citation in opposition procedure - 017
Nov 15, 2023
Citation in opposition procedure - 018
Nov 15, 2023
Citation in opposition procedure - 019
Nov 15, 2023
Citation in opposition procedure - 020
Nov 15, 2023
Citation in opposition procedure - 021
Nov 15, 2023
Citation in opposition procedure - 022
Nov 15, 2023
Consolidated list of cited opposition documents
Nov 15, 2023
Notice of opposition
Nov 15, 2023
Notice of opposition
Feb 28, 2023
Transmission of the certificate for a European patent pursuant to Rule 74 EPC
Jan 19, 2023
Decision to grant a European patent
Jan 3, 2023
(Electronic) Receipt
Jan 3, 2023
English translation of the claims
Jan 3, 2023
Filing of the translations of the claims
Jan 3, 2023
French translation of claims
Jan 3, 2023
Letter accompanying subsequently filed items
Sep 14, 2022
Bibliographic data of the European patent application
Sep 14, 2022
Communication about intention to grant a European patent
Sep 14, 2022
Intention to grant (signatures)
Sep 14, 2022
Text intended for grant (clean copy)
Sep 14, 2022
Text intended for grant (version for approval)
Jul 1, 2022
Response to enquiry for communication from the Examining Division
Jun 20, 2022
(Electronic) Receipt
Jun 20, 2022
Enquiry as to the processing of the file
Jun 20, 2022
Letter accompanying subsequently filed items
May 12, 2022
(Electronic) Receipt
May 12, 2022
Amended description with annotations
May 12, 2022
Description
May 12, 2022
Letter accompanying subsequently filed items
May 12, 2022
Reply to communication from the Examining Division
May 4, 2022
Annex to the communication
May 4, 2022
Communication from the Examining Division
Mar 2, 2021
(Electronic) Receipt
Mar 2, 2021
Amended claims with annotations
Mar 2, 2021
Claims
Mar 2, 2021
Letter accompanying subsequently filed items
Mar 2, 2021
Reply to communication from the Examining Division
Nov 19, 2020
Annex to the communication
Nov 19, 2020
Communication from the Examining Division
Nov 11, 2020
Examination started
Mar 24, 2020
Invitation to indicate correct address of inventor
Mar 18, 2020
Notification on forthcoming publication of bibliographic data
Mar 9, 2020
(Electronic) Receipt
Mar 9, 2020
Amended claims filed after receipt of (European) search report
Mar 9, 2020
Amended claims with annotations
Mar 9, 2020
Amendments received before examination
Mar 9, 2020
Letter accompanying subsequently filed items
Mar 9, 2020
Letter which had not been notified
Jan 21, 2020
Communication concerning correction of deficiencies in written opinion/amendment of application/payment of claims fee
Jan 17, 2020
Communication to designated inventor
Jan 17, 2020
Communication to designated inventor
Jan 17, 2020
Communication to designated inventor
Jan 17, 2020
Communication to designated inventor
Jan 3, 2020
Copy of the international preliminary examination report
Dec 16, 2019
(Electronic) Receipt
Dec 16, 2019
Copy of the international preliminary examination report
Dec 16, 2019
Request for entry into the European phase
Nov 12, 2019
Notification of the recording of a change
Nov 12, 2019
Notification of the recording of a change
Oct 18, 2019
Information on entry into European phase
Sep 18, 2019
Annex to International preliminary examination report
Sep 18, 2019
International preliminary examination report
Sep 18, 2019
International preliminary examination report - free text sheet
Sep 18, 2019
International preliminary examination report - points I-VIII
Sep 18, 2019
Transmittal of International Preliminary Examination Report
May 20, 2019
Written opinion
May 20, 2019
Written opinion - free text sheet
May 20, 2019
Written opinion - points I-VIII
Jan 18, 2019
Notification of the recording of a change
Jan 18, 2019
Notification of the recording of a change
Jan 18, 2019
Notification of the recording of a change
Jan 4, 2019
Priority document (electronically transmitted)
Dec 21, 2018
Notification of election of EPO
Dec 13, 2018
Copy of the international search report
Dec 13, 2018
Copy of the international search report
Dec 13, 2018
Published international application - A1
Sep 13, 2018
Notification of receipt of demand
Sep 5, 2018
(Electronic) Receipt
Sep 5, 2018
PCT demand form
Sep 5, 2018
PCT(IPEA): Amended sheet - claims
Sep 5, 2018
PCT(IPEA): Amended sheet - claims
Sep 5, 2018
Payment of fees and costs
Sep 5, 2018
Reply to International Search Opinion
Jul 25, 2018
Written opinion of the ISA, boxes No. I to VIII
Jul 25, 2018
Written opinion of the ISA, cover sheet
Jul 25, 2018
Written opinion of the ISA, supplemental box
Jul 23, 2018
Incoming letter related to PCT RO
Jul 19, 2018
Incoming letter related to PCT RO
Jun 21, 2018
Invitation to correct defects in the international application
Jun 21, 2018
Notification of the international application number and of the international filing date
Jun 5, 2018
(Electronic) Receipt
Jun 5, 2018
Abstract
Jun 5, 2018
Claims
Jun 5, 2018
Description
Jun 5, 2018
Document concerning fees and payments
Jun 5, 2018
Drawings
Jun 5, 2018
Electronic request for grant of an International application

EP3635043

INEOS STYROLUTION GROUP

Application Number: EP18729409A
Filing Date: Jun 5, 2018
Status: Revoked; Sep 12, 2025
Publication Date: Feb 15, 2023
External Links: Slate, Register , Google Patents

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Recycling Method For Styrene-Containing Plastic Waste

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Dossier Documents

EP3635043