Super-Absorbent Polymer And Preparation Method Therefor

Patent No. EP3530688 (titled "Super-Absorbent Polymer And Preparation Method Therefor") was filed by LG Chem on Oct 16, 2018. The application was issued on Mar 26, 2025.

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
NIPPON SHOKUBAI	Feb 16, 2022	HERZOG PATENTANWALTS

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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Feb 27, 2025
Decision to maintain the European patent in amended form
Feb 27, 2025
Decision to maintain the European patent in amended form
Aug 13, 2024
(Electronic) Receipt
Aug 13, 2024
Filing of the translation of the amended claims
Aug 13, 2024
French translation of claims
Aug 13, 2024
German translation of the claims
May 27, 2024
Communication of bibliographic data
May 27, 2024
Communication to opponent concerning maintenance
May 27, 2024
Communication with request to file translations
May 23, 2024
Refund of fees
May 16, 2024
F3324 Closure of the appeal proceedings: withdrawal of the appeal/ application/ opposition
May 16, 2024
F3324 Closure of the appeal proceedings: withdrawal of the appeal/ application/ opposition
May 15, 2024
Maintenance of the patent with the documents specified in the final decision
May 10, 2024
F3345 Forwarding of submissions to parties
May 7, 2024
(Electronic) Receipt
May 7, 2024
Composition of the board (T)
May 7, 2024
Letter accompanying subsequently filed items
May 7, 2024
Withdrawal of an appeal
Apr 24, 2024
F3204 Communication of the file number to the parties
Apr 24, 2024
F3204 Communication of the file number to the parties
Apr 19, 2024
(Electronic) Receipt
Apr 19, 2024
Letter accompanying subsequently filed items
Apr 19, 2024
Notice of appeal
Feb 20, 2024
Annex to the communication - opposition
Feb 20, 2024
Brief communication - Opposition proceedings
Feb 20, 2024
Brief communication - Opposition proceedings
Feb 20, 2024
Druckexemplar in opposition procedure
Feb 20, 2024
Grounds for the decision (Annex) - opposition
Feb 20, 2024
Interlocutory decision in opposition proceedings
Feb 20, 2024
Interlocutory decision in opposition proceedings
Feb 20, 2024
Means of redress
Feb 20, 2024
Minutes of the oral proceedings (Opposition Division) - conclusion of the proceedings
Feb 20, 2024
Minutes of the oral proceedings (Opposition Division) - introduction of the parties
Feb 20, 2024
Provision of a copy of the minutes - opposition procedure
Feb 20, 2024
Provision of a copy of the minutes - opposition procedure
Feb 20, 2024
Scanned annex to a communication - opposition procedure
Feb 16, 2024
Decision of the Opposition Division and instruction
Jan 10, 2024
Information about the result of oral proceedings
Nov 17, 2023
Brief communication - Opposition proceedings
Nov 16, 2023
Brief communication - Opposition proceedings
Nov 9, 2023
(Electronic) Receipt
Nov 9, 2023
Citation in opposition procedure - 015
Nov 9, 2023
Consolidated list of cited opposition documents
Nov 9, 2023
Letter accompanying subsequently filed items
Nov 9, 2023
Written submission in preparation to/during oral proceedings
Nov 8, 2023
(Electronic) Receipt
Nov 8, 2023
Letter accompanying subsequently filed items
Nov 8, 2023
Written submission in preparation to/during oral proceedings
Jan 11, 2023
Brief communication - Opposition proceedings
Jan 6, 2023
(Electronic) Receipt
Jan 6, 2023
Letter accompanying subsequently filed items
Jan 6, 2023
Request for interpreters during oral proceedings
Jan 2, 2023
Advice of delivery
Jan 2, 2023
Advice of delivery
Jan 2, 2023
Annex to the communication - opposition
Jan 2, 2023
Information concerning oral proceedings
Jan 2, 2023
Summons to attend oral proceedings
Jan 2, 2023
Summons to attend oral proceedings
Jan 2, 2023
Transmittal of decision / summons - opposition
Jan 2, 2023
Transmittal of decision / summons - opposition
Jul 15, 2022
Brief communication - Opposition proceedings
Jul 11, 2022
(Electronic) Receipt
Jul 11, 2022
Auxiliary request during Opposition procedure
Jul 11, 2022
Auxiliary request during Opposition procedure
Jul 11, 2022
Auxiliary request during Opposition procedure - 01
Jul 11, 2022
Auxiliary request during Opposition procedure - 02
Jul 11, 2022
Citation in opposition procedure - 002
Jul 11, 2022
Citation in opposition procedure - 013
Jul 11, 2022
Citation in opposition procedure - 014
Jul 11, 2022
Citation in opposition procedure - 015
Jul 11, 2022
Letter accompanying subsequently filed items
Jul 11, 2022
Reply of the patent proprietor to the notice(s) of opposition
Mar 4, 2022
Communication of a notice of opposition and request to file observations
Mar 4, 2022
Notice of further oppositions to opponent(s)
Feb 21, 2022
Communication of a notice of opposition - first information to patent proprietor
Feb 16, 2022
(Electronic) Receipt
Feb 16, 2022
Citation in opposition procedure - 001
Feb 16, 2022
Citation in opposition procedure - 002
Feb 16, 2022
Citation in opposition procedure - 003
Feb 16, 2022
Citation in opposition procedure - 004
Feb 16, 2022
Citation in opposition procedure - 005
Feb 16, 2022
Citation in opposition procedure - 006
Feb 16, 2022
Citation in opposition procedure - 007
Feb 16, 2022
Citation in opposition procedure - 008
Feb 16, 2022
Citation in opposition procedure - 009
Feb 16, 2022
Citation in opposition procedure - 010
Feb 16, 2022
Citation in opposition procedure - 011
Feb 16, 2022
Citation in opposition procedure - 012
Feb 16, 2022
Notice of opposition
Feb 16, 2022
Notice of opposition
Jun 1, 2021
Transmission of the certificate for a European patent pursuant to Rule 74 EPC
Apr 22, 2021
Decision to grant a European patent
Apr 7, 2021
(Electronic) Receipt
Apr 7, 2021
Filing of the translations of the claims
Apr 7, 2021
French translation of claims
Apr 7, 2021
German translation of the claims
Mar 2, 2021
Bibliographic data of the European patent application
Mar 2, 2021
Communication about intention to grant a European patent
Mar 2, 2021
Intention to grant (signatures)
Mar 2, 2021
Text intended for grant (clean copy)
Mar 2, 2021
Text intended for grant (version for approval)
Feb 1, 2021
Annex to the communication
Feb 1, 2021
Consultation by telephone/in person (with time limit)
Feb 1, 2021
Result of consultation by telephone/in person
Jan 21, 2021
(Electronic) Receipt
Jan 21, 2021
Amended claims with annotations
Jan 21, 2021
Amended description with annotations
Jan 21, 2021
Claims
Jan 21, 2021
Description
Jan 21, 2021
Letter accompanying subsequently filed items
Jan 21, 2021
Reply to communication from the Examining Division
Oct 19, 2020
(Electronic) Receipt
Oct 19, 2020
Amended claims with annotations
Oct 19, 2020
Amended description with annotations
Oct 19, 2020
Claims
Oct 19, 2020
Description
Oct 19, 2020
Letter accompanying subsequently filed items
Oct 19, 2020
Reply to communication from the Examining Division
Sep 11, 2020
Annex to the communication
Sep 11, 2020
Communication from the Examining Division
Sep 1, 2020
Examination started
Jul 8, 2020
Patent document filed by a Third party
Jul 8, 2020
Patent document filed by a Third party
Jul 8, 2020
Patent document filed by a Third party
Jul 8, 2020
Patent document filed by a Third party
Jul 8, 2020
Patent document filed by a Third party
Jul 8, 2020
Patent document filed by a Third party
Jul 8, 2020
Patent document filed by a Third party
Jul 8, 2020
Patent document filed by a Third party
Jun 22, 2020
(Electronic) Receipt
Jun 22, 2020
Amended claims filed after receipt of (European) search report
Jun 22, 2020
Amended claims with annotations
Jun 22, 2020
Amendments received before examination
Jun 22, 2020
Letter accompanying subsequently filed items
May 25, 2020
Copy of the international preliminary report on patentability
May 25, 2020
Translation of the international preliminary report on patentability
May 7, 2020
Non-patent literature filed by a third party
May 7, 2020
Observations by third parties
May 7, 2020
Patent document filed by a Third party
May 7, 2020
Patent document filed by a Third party
May 7, 2020
Patent document filed by a Third party
May 7, 2020
Patent document filed by a Third party
May 7, 2020
Patent document filed by a Third party
May 7, 2020
Patent document filed by a Third party
Mar 6, 2020
Acknowledgement of receipt of observations by third party
Mar 6, 2020
Communication to applicant regarding observations by third parties
Mar 2, 2020
Annex
Mar 2, 2020
Annex
Mar 2, 2020
Annex
Mar 2, 2020
Annex
Mar 2, 2020
Annex
Mar 2, 2020
Annex
Mar 2, 2020
Annex
Mar 2, 2020
Annex
Mar 2, 2020
Annex
Mar 2, 2020
Annex
Mar 2, 2020
Annex
Mar 2, 2020
Annex
Mar 2, 2020
Annex
Mar 2, 2020
Matter concerning the application
Mar 2, 2020
Matter concerning the application
Mar 1, 2020
Non-patent literature filed by a third party
Mar 1, 2020
Observations by third parties
Mar 1, 2020
Observations by third parties
Mar 1, 2020
Patent document filed by a Third party
Mar 1, 2020
Patent document filed by a Third party
Mar 1, 2020
Patent document filed by a Third party
Mar 1, 2020
Patent document filed by a Third party
Mar 1, 2020
Patent document filed by a Third party
Mar 1, 2020
Patent document filed by a Third party
Mar 1, 2020
Patent document filed by a Third party
Jan 10, 2020
Invitation to declare maintenance of the application and to correct deficiencies in the Written Opinion/amend application
Dec 16, 2019
Communication regarding the transmission of the European search report
Dec 16, 2019
European search opinion
Dec 16, 2019
Information on Search Strategy
Dec 16, 2019
Supplementary European search report
Dec 4, 2019
Search started
Sep 2, 2019
Invitation to indicate correct address of inventor
Sep 2, 2019
Invitation to indicate correct address of inventor
Aug 26, 2019
Letter which had not been notified
Aug 26, 2019
Letter which had not been notified
Jul 31, 2019
Notification of forthcoming publication
Jul 24, 2019
Communication to designated inventor
Jul 24, 2019
Communication to designated inventor
Jul 24, 2019
Confirmation of effective date of early entry
Jul 18, 2019
Reply by International Bureau
Jul 18, 2019
Translation of the international preliminary report on patentability
Jul 18, 2019
Transmission of a document (International preliminary examination report)
May 23, 2019
Confirmation of receipt of (electronically) transmitted priority document
May 20, 2019
Priority document (electronically transmitted)
May 16, 2019
Copy of the international preliminary report on patentability
May 16, 2019
Copy of the international search report
May 16, 2019
Copy of the translated international search report
May 16, 2019
International publication pamphlet
May 9, 2019
Enquiry with the International Bureau
Mar 26, 2019
(Electronic) Receipt
Mar 26, 2019
Abstract
Mar 26, 2019
Claims
Mar 26, 2019
Description
Mar 26, 2019
Request for entry into the European phase

EP3530688

LG CHEM

Application Number: EP18857397A
Filing Date: Oct 16, 2018
Status: Patent Maintained As Amended; Feb 21, 2025
Publication Date: Mar 26, 2025
External Links: Slate, Register , Google Patents

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Super-Absorbent Polymer And Preparation Method Therefor

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Dossier Documents

EP3530688