Device And Method For Measuring Resistance Of Pressurized Separator

Patent No. EP3851841 (titled "Device And Method For Measuring Resistance Of Pressurized Separator") was filed by LG Chem on Oct 6, 2020. The application was issued on Sep 10, 2025.

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 23, 2025
Transmission of the certificate for a European patent pursuant to Rule 74 EPC
Aug 14, 2025
Decision to grant a European patent
Aug 6, 2025
(Electronic) Receipt
Aug 6, 2025
Filing of the translations of the claims
Aug 6, 2025
French translation of claims
Aug 6, 2025
German translation of the claims
Aug 6, 2025
Miscellaneous requests concerning client data
Aug 6, 2025
Miscellaneous requests concerning client data
Jun 11, 2025
Annex to the communication about intention to grant a European patent
Jun 11, 2025
Bibliographic data of the European patent application
Jun 11, 2025
Communication about intention to grant a European patent
Jun 11, 2025
Intention to grant (signatures)
Jun 11, 2025
Text intended for grant (clean copy)
Jun 11, 2025
Text intended for grant (version for approval)
Feb 6, 2025
Response to enquiry for communication from the Examining Division
Jan 23, 2025
(Electronic) Receipt
Jan 23, 2025
Enquiry as to the processing of the file
Jan 23, 2025
Letter accompanying subsequently filed items
Jul 5, 2024
Document concerning representation
Oct 11, 2023
(Electronic) Receipt
Oct 11, 2023
Amended claims with annotations
Oct 11, 2023
Amended description with annotations
Oct 11, 2023
Claims
Oct 11, 2023
Description
Oct 11, 2023
Letter accompanying subsequently filed items
Oct 11, 2023
Reply to communication from the Examining Division
Aug 2, 2023
Annex to the communication
Aug 2, 2023
Communication from the Examining Division
Jan 26, 2023
(Electronic) Receipt
Jan 26, 2023
Amended claims with annotations
Jan 26, 2023
Amended description with annotations
Jan 26, 2023
Claims
Jan 26, 2023
Description
Jan 26, 2023
Letter accompanying subsequently filed items
Jan 26, 2023
Reply to communication from the Examining Division
Nov 23, 2022
Annex to the communication
Nov 23, 2022
Communication from the Examining Division
Nov 23, 2022
Response to enquiry for communication from the Examining Division
Nov 17, 2022
(Electronic) Receipt
Nov 17, 2022
Enquiry as to the processing of the file
Nov 17, 2022
Letter accompanying subsequently filed items
Mar 22, 2022
(Electronic) Receipt
Mar 22, 2022
Amended claims with annotations
Mar 22, 2022
Claims
Mar 22, 2022
Letter accompanying subsequently filed items
Mar 22, 2022
Reply to communication from the Examining Division
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
Jan 20, 2022
Annex to the communication
Jan 20, 2022
Communication from the Examining Division
Jan 17, 2022
Examination started
Jan 13, 2022
(Electronic) Receipt
Jan 13, 2022
Amended claims filed after receipt of (European) search report
Jan 13, 2022
Amended claims with annotations
Jan 13, 2022
Amended description filed after receipt of (European) search report
Jan 13, 2022
Amended description with annotations
Jan 13, 2022
Amendments received before examination
Jan 13, 2022
Letter accompanying subsequently filed items
Dec 17, 2021
Communication of the registration of a transfer or change of name and/or address
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)
Oct 29, 2021
Invitation to declare maintenance of the application and to correct deficiencies in the Written Opinion/amend application
Oct 12, 2021
Communication regarding the transmission of the European search report
Oct 12, 2021
European search opinion
Oct 12, 2021
Information on Search Strategy
Oct 12, 2021
Supplementary European search report
Sep 28, 2021
Search started
Jun 23, 2021
Notification of forthcoming publication
May 17, 2021
Priority document (electronically transmitted)
May 8, 2021
Translation of the international preliminary report on patentability
May 8, 2021
Transmission of a document (International preliminary examination report)
Apr 29, 2021
Copy of the international search report
Apr 29, 2021
Copy of the translated international search report
Apr 29, 2021
Published international application - A1
Apr 23, 2021
Confirmation of effective date of early entry
Apr 20, 2021
Copy of the international preliminary report on patentability
Apr 16, 2021
(Electronic) Receipt
Apr 16, 2021
Abstract
Apr 16, 2021
Claims
Apr 16, 2021
Description
Apr 16, 2021
Drawings
Apr 16, 2021
Request for entry into the European phase

EP3851841

LG CHEM

Application Number: EP20873373A
Filing Date: Oct 6, 2020
Status: Granted And Under Opposition; Aug 8, 2025
Publication Date: Sep 10, 2025
External Links: Slate, Register , Google Patents

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Device And Method For Measuring Resistance Of Pressurized Separator

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Dossier Documents

EP3851841