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Negative Electrode Active Material For Lithium Secondary Battery And Lithium Secondary Battery Comprising Same

Patent No. EP3683871 (titled "Negative Electrode Active Material For Lithium Secondary Battery And Lithium Secondary Battery Comprising Same") was filed by LG Chem on Oct 26, 2018. The application was issued on Dec 1, 2021.

Patent Summary

Patent Family

Patent Oppositions

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
ZWICKER SCHNAPPAUF & PARTNER	Sep 1, 2022	GELING

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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Oct 9, 2025
Communication to the parties concerning termination of the opposition proceedings - opposition rejected - no appeal lodged
Oct 9, 2025
Communication to the parties concerning the termination of the opposition proceedings (opponent)
Jul 4, 2025
Annex to the communication - opposition
Jul 4, 2025
Brief communication - Opposition proceedings
Jul 4, 2025
Brief communication - Opposition proceedings
Jul 4, 2025
Decision of the Opposition Division and instruction
Jul 4, 2025
Decision rejecting the opposition
Jul 4, 2025
Decision rejecting the opposition
Jul 4, 2025
Grounds for the decision (Annex) - opposition
Jul 4, 2025
Means of redress
Jul 4, 2025
Minutes of the oral proceedings (Opposition Division) - conclusion of the proceedings
Jul 4, 2025
Minutes of the oral proceedings (Opposition Division) - introduction of the parties
Jul 4, 2025
Provision of a copy of the minutes - opposition procedure
Jul 4, 2025
Provision of a copy of the minutes - opposition procedure
Jun 18, 2025
Information about the result of oral proceedings
Jun 5, 2025
Notification concerning the date of oral proceedings
Jun 5, 2025
Notification concerning the date of oral proceedings
May 28, 2025
Brief communication - Opposition proceedings
May 22, 2025
(Electronic) Receipt
May 22, 2025
Letter accompanying subsequently filed items
May 22, 2025
Written submission in preparation to/during oral proceedings
May 19, 2025
Annex to the communication - opposition
May 19, 2025
Notification concerning the date of oral proceedings
May 19, 2025
Notification concerning the date of oral proceedings
May 8, 2025
Brief communication - Opposition proceedings
Apr 23, 2025
Brief communication - Opposition proceedings
Apr 22, 2025
Brief communication - Opposition proceedings
Apr 16, 2025
(Electronic) Receipt
Apr 16, 2025
Auxiliary request during Opposition procedure
Apr 16, 2025
Auxiliary request during Opposition procedure
Apr 16, 2025
Auxiliary request during Opposition procedure
Apr 16, 2025
Auxiliary request during Opposition procedure - 01
Apr 16, 2025
Auxiliary request during Opposition procedure - 02
Apr 16, 2025
Auxiliary request during Opposition procedure - 03
Apr 16, 2025
Letter accompanying subsequently filed items
Apr 16, 2025
Written submission in preparation to/during oral proceedings
Apr 14, 2025
(Electronic) Receipt
Apr 14, 2025
Letter accompanying subsequently filed items
Apr 14, 2025
Request for interpreters during oral proceedings
Nov 14, 2024
Annex to the communication - opposition
Nov 14, 2024
Information concerning oral proceedings
Nov 14, 2024
Scanned annex to a communication - opposition procedure
Nov 14, 2024
Summons to attend oral proceedings
Nov 14, 2024
Summons to attend oral proceedings
Sep 26, 2023
Brief communication - Opposition proceedings
Sep 26, 2023
Brief communication - Opposition proceedings
Sep 20, 2023
(Electronic) Receipt
Sep 20, 2023
Letter accompanying subsequently filed items
Sep 20, 2023
Letter regarding the opposition procedure (no time limit)
Jan 23, 2023
(Electronic) Receipt
Jan 23, 2023
Any annexes (other than citation) to an opposition letter
Jan 23, 2023
Auxiliary request during Opposition procedure
Jan 23, 2023
Auxiliary request during Opposition procedure
Jan 23, 2023
Auxiliary request during Opposition procedure - 01
Jan 23, 2023
Auxiliary request during Opposition procedure - 02
Jan 23, 2023
Letter accompanying subsequently filed items
Jan 23, 2023
Reply of the patent proprietor to the notice(s) of opposition
Sep 15, 2022
Brief communication - Opposition proceedings
Sep 15, 2022
Communication of a notice of opposition and request to file observations
Sep 15, 2022
Notice of further oppositions to opponent(s)
Sep 9, 2022
(Electronic) Receipt
Sep 9, 2022
Letter accompanying subsequently filed items
Sep 9, 2022
Letter regarding the opposition procedure (no time limit)
Sep 7, 2022
Communication of a notice of opposition - first information to patent proprietor
Sep 1, 2022
(Electronic) Receipt
Sep 1, 2022
Citation in opposition procedure - 001
Sep 1, 2022
Citation in opposition procedure - 001
Sep 1, 2022
Citation in opposition procedure - 002
Sep 1, 2022
Citation in opposition procedure - 003
Sep 1, 2022
Citation in opposition procedure - 003
Sep 1, 2022
Citation in opposition procedure - 004
Sep 1, 2022
Citation in opposition procedure - 005
Sep 1, 2022
Citation in opposition procedure - 006
Sep 1, 2022
Citation in opposition procedure - 007
Sep 1, 2022
Citation in opposition procedure - 007
Sep 1, 2022
Consolidated list of cited opposition documents
Sep 1, 2022
Notice of opposition
Sep 1, 2022
Notice of opposition
Feb 23, 2022
Communication of the registration of a transfer or change of name and/or address
Feb 16, 2022
Annexes in respect of a client data request
Feb 16, 2022
Letter accompanying subsequently filed items
Feb 16, 2022
Submission concerning change of applicant's name
Dec 17, 2021
Communication of the registration of a transfer or change of name and/or address
Dec 14, 2021
Transmission of the certificate for a European patent pursuant to Rule 74 EPC
Dec 9, 2021
Annexes in respect of a client data request
Dec 9, 2021
Annexes in respect of a client data request
Dec 9, 2021
Letter accompanying subsequently filed items
Dec 9, 2021
Submission concerning a transfer of rights (applicant)
Nov 5, 2021
Decision to grant a European patent
Sep 14, 2021
(Electronic) Receipt
Sep 14, 2021
Filing of the translations of the claims
Sep 14, 2021
French translation of claims
Sep 14, 2021
German translation of the claims
Sep 14, 2021
Letter accompanying subsequently filed items
Jul 15, 2021
Bibliographic data of the European patent application
Jul 15, 2021
Communication about intention to grant a European patent
Jul 15, 2021
Intention to grant (signatures)
Jul 15, 2021
Text intended for grant (clean copy)
Jul 15, 2021
Text intended for grant (version for approval)
Jun 29, 2021
Examination started
Mar 16, 2021
(Electronic) Receipt
Mar 16, 2021
Amended claims filed after receipt of (European) search report
Mar 16, 2021
Amended claims with annotations
Mar 16, 2021
Amendments received before examination
Mar 16, 2021
Letter accompanying subsequently filed items
Oct 29, 2020
Invitation to declare maintenance of the application and to correct deficiencies in the Written Opinion/amend application
Oct 12, 2020
Communication regarding the transmission of the European search report
Oct 12, 2020
Document annexed to the Extended European Search Report
Oct 12, 2020
Document annexed to the Extended European Search Report
Oct 12, 2020
European search opinion
Oct 12, 2020
Information on Search Strategy
Oct 12, 2020
Supplementary European search report
Sep 28, 2020
Search started
Aug 20, 2020
Invitation to indicate correct address of inventor
Aug 20, 2020
Invitation to indicate correct address of inventor
Aug 20, 2020
Invitation to indicate correct address of inventor
Aug 20, 2020
Invitation to indicate correct address of inventor
Aug 20, 2020
Invitation to indicate correct address of inventor
Aug 20, 2020
Invitation to indicate correct address of inventor
Aug 17, 2020
Letter which had not been notified
Aug 14, 2020
Letter which had not been notified
Aug 14, 2020
Letter which had not been notified
Aug 14, 2020
Letter which had not been notified
Aug 14, 2020
Letter which had not been notified
Aug 14, 2020
Letter which had not been notified
Jun 24, 2020
Notification of forthcoming publication
May 16, 2020
Annex
May 16, 2020
Copy of the international preliminary report on patentability
May 16, 2020
Translation of the international preliminary report on patentability
May 16, 2020
Transmission of a document (International preliminary examination report)
May 11, 2020
Copy of the international preliminary report on patentability
May 11, 2020
Translation of the international preliminary report on patentability
May 7, 2020
Enquiry with the International Bureau
Apr 29, 2020
Communication to designated inventor
Apr 29, 2020
Communication to designated inventor
Apr 29, 2020
Communication to designated inventor
Apr 29, 2020
Communication to designated inventor
Apr 29, 2020
Communication to designated inventor
Apr 29, 2020
Communication to designated inventor
Apr 29, 2020
Confirmation of effective date of early entry
Apr 29, 2020
Request for a change to the title of the invention
Apr 15, 2020
(Electronic) Receipt
Apr 15, 2020
Abstract
Apr 15, 2020
Annex
Apr 15, 2020
Claims
Apr 15, 2020
Description
Apr 15, 2020
Request for entry into the European phase
Mar 6, 2020
Information on entry into European phase
Jun 13, 2019
Copy of the international search report
Jun 13, 2019
Copy of the translated international search report
Jun 13, 2019
International publication of the international search report
May 21, 2019
Priority document (electronically transmitted)
May 2, 2019
International publication pamphlet

EP3683871

LG CHEM

Application Number: EP18869600A
Filing Date: Oct 26, 2018
Status: Granted And Under Opposition; Oct 29, 2021
Publication Date: Dec 1, 2021
External Links: Slate, Register , Google Patents