Method For Continuous Aerogel Production

Patent No. EP3478400 (titled "Method For Continuous Aerogel Production") was filed by Keey Aerogel on Jul 3, 2017. The application was issued on Sep 2, 2020.

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
HELWIG	Jun 2, 2021	VON ROHR PATENTANWALTE PARTNERSCHAFT MBB

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 4, 2025
Decision of the Board of Appeal
Sep 4, 2025
F3032 Notification(s) of the decision
Sep 4, 2025
F3032 Notification(s) of the decision
Jun 20, 2025
F3013 Oral Proceedings: Forwarding minutes
Jun 20, 2025
F3013 Oral Proceedings: Forwarding minutes
Jun 20, 2025
F3316 Oral Proceedings: Minutes (Appellant: Opponent)
Jun 4, 2025
F3345 Forwarding of submissions to parties
May 30, 2025
(Electronic) Receipt
May 30, 2025
(Electronic) Receipt
May 30, 2025
Letter accompanying subsequently filed items
May 30, 2025
Letter accompanying subsequently filed items
May 30, 2025
Letter dealing with oral proceedings during the appeal procedure
May 30, 2025
Letter dealing with oral proceedings during the appeal procedure
May 19, 2025
F3018 Oral proceedings: Confirmation interpreters
May 19, 2025
F3018 Oral proceedings: Confirmation interpreters
May 15, 2025
F3345 Forwarding of submissions to parties
May 13, 2025
(Electronic) Receipt
May 13, 2025
(Electronic) Receipt
May 13, 2025
Letter accompanying subsequently filed items
May 13, 2025
Letter accompanying subsequently filed items
May 13, 2025
Letter dealing with oral proceedings during the appeal procedure
May 13, 2025
Request for interpreters during oral proceedings
Mar 18, 2025
F3305 Communication of the Board of Appeal (ex parte/ inter partes)
Mar 18, 2025
F3305 Communication of the Board of Appeal (ex parte/ inter partes)
Aug 9, 2024
F3011.2 Oral Proceedings: Summons VICO
Aug 9, 2024
F3011.2 Oral Proceedings: Summons VICO
Aug 6, 2024
F3010 Oral proceedings: order for summons
Aug 6, 2024
F3303.16 Change of composition of the Board (T)
Mar 21, 2024
F3305 Communication of the Board of Appeal (ex parte/ inter partes)
Mar 21, 2024
F3305 Communication of the Board of Appeal (ex parte/ inter partes)
Mar 18, 2024
(Electronic) Receipt
Mar 18, 2024
Letter accompanying subsequently filed items
Mar 18, 2024
Letter dealing with oral proceedings during the appeal procedure
Oct 2, 2023
F3345 Forwarding of submissions to parties
Sep 27, 2023
(Electronic) Receipt
Sep 27, 2023
Citation in appeal procedure - 018
Sep 27, 2023
Citation in appeal procedure - 019
Sep 27, 2023
Letter accompanying subsequently filed items
Sep 27, 2023
Letter relating to Appeal Procedure
Jul 18, 2023
F3345 Forwarding of submissions to parties
Jul 6, 2023
(Electronic) Receipt
Jul 6, 2023
Auxiliary request during appeals procedure - 01
Jul 6, 2023
Auxiliary request during appeals procedure - 02
Jul 6, 2023
Citation in appeal procedure - 017
Jul 6, 2023
Letter accompanying subsequently filed items
Jul 6, 2023
Reply to appeal
May 17, 2023
F3344 Setting time limit for reply/ file observations to appeal (inter partes)
May 12, 2023
(Electronic) Receipt
May 12, 2023
Letter accompanying subsequently filed items
May 12, 2023
Statement of grounds of appeal
Apr 5, 2023
Refund of fees
Mar 21, 2023
Composition of the board (T)
Mar 16, 2023
Brief communication - Opposition proceedings
Mar 16, 2023
Communication of amended entries
Mar 16, 2023
Communication of amended entries
Mar 16, 2023
F3204 Communication of the file number to the parties
Mar 16, 2023
F3204 Communication of the file number to the parties
Mar 10, 2023
(Electronic) Receipt
Mar 10, 2023
(Electronic) Receipt
Mar 10, 2023
(Electronic) Receipt
Mar 10, 2023
Letter accompanying subsequently filed items
Mar 10, 2023
Letter accompanying subsequently filed items
Mar 10, 2023
Letter accompanying subsequently filed items (CDR)
Mar 10, 2023
Notice of appeal
Mar 10, 2023
Notice of appeal
Mar 10, 2023
Request for change of opponent's representative
Mar 10, 2023
Request for change of opponent's representative
Feb 8, 2023
(Electronic) Receipt
Feb 8, 2023
Advice of delivery
Feb 8, 2023
Letter accompanying subsequently filed items
Jan 12, 2023
Advice of delivery
Jan 3, 2023
Annex to the communication - opposition
Jan 3, 2023
Decision of the Opposition Division and instruction
Jan 3, 2023
Decision rejecting the opposition
Jan 3, 2023
Decision rejecting the opposition
Jan 3, 2023
Grounds for the decision (Annex) - opposition
Jan 3, 2023
Means of redress
Jan 3, 2023
Minutes of the oral proceedings (Opposition Division) - conclusion of the proceedings
Jan 3, 2023
Minutes of the oral proceedings (Opposition Division) - conclusion of the proceedings
Jan 3, 2023
Minutes of the oral proceedings (Opposition Division) - introduction of the parties
Jan 3, 2023
Provision of a copy of the minutes - opposition procedure
Jan 3, 2023
Provision of a copy of the minutes - opposition procedure
Jan 3, 2023
Transmittal of decision / summons - opposition
Jan 3, 2023
Transmittal of decision / summons - opposition
Dec 8, 2022
Information about the result of oral proceedings
Dec 6, 2022
Brief communication - Opposition proceedings
Nov 30, 2022
(Electronic) Receipt
Nov 30, 2022
Letter accompanying subsequently filed items
Nov 30, 2022
Written submission in preparation to/during oral proceedings
Oct 19, 2022
Brief communication - Opposition proceedings
Oct 14, 2022
Brief communication - Opposition proceedings
Oct 6, 2022
(Electronic) Receipt
Oct 6, 2022
(Electronic) Receipt
Oct 6, 2022
Abstract
Oct 6, 2022
Abstract
Oct 6, 2022
Auxiliary request during Opposition procedure - 01
Oct 6, 2022
Auxiliary request during Opposition procedure - 02
Oct 6, 2022
Description
Oct 6, 2022
Description
Oct 6, 2022
Letter accompanying subsequently filed items
Oct 6, 2022
Letter accompanying subsequently filed items
Oct 6, 2022
Written submission in preparation to/during oral proceedings
Oct 6, 2022
Written submission in preparation to/during oral proceedings
Aug 16, 2022
Brief communication - Opposition proceedings
Aug 9, 2022
Request for interpreters during oral proceedings
Jun 10, 2022
Notification concerning the date of oral proceedings
Jun 10, 2022
Notification concerning the date of oral proceedings
Apr 8, 2022
Brief communication - Opposition proceedings
Apr 8, 2022
Brief communication - Opposition proceedings
Mar 25, 2022
(Electronic) Receipt
Mar 25, 2022
Advice of delivery
Mar 25, 2022
Letter accompanying subsequently filed items
Mar 24, 2022
Advice of delivery
Mar 18, 2022
Annex to the communication - opposition
Mar 18, 2022
Information concerning oral proceedings
Mar 18, 2022
Summons to attend oral proceedings
Mar 18, 2022
Summons to attend oral proceedings
Mar 18, 2022
Transmittal of decision / summons - opposition
Mar 18, 2022
Transmittal of decision / summons - opposition
Mar 2, 2022
Brief communication - Opposition proceedings
Feb 24, 2022
(Electronic) Receipt
Feb 24, 2022
Letter accompanying subsequently filed items
Feb 24, 2022
Letter regarding the opposition procedure (no time limit)
Dec 22, 2021
Brief communication - Opposition proceedings
Dec 15, 2021
(Electronic) Receipt
Dec 15, 2021
Auxiliary request during Opposition procedure - 01
Dec 15, 2021
Auxiliary request during Opposition procedure - 02
Dec 15, 2021
Citation in opposition procedure - 016
Dec 15, 2021
Consolidated list of cited opposition documents
Dec 15, 2021
Letter accompanying subsequently filed items
Dec 15, 2021
Reply of the patent proprietor to the notice(s) of opposition
Sep 20, 2021
Brief communication - Opposition proceedings
Sep 20, 2021
Grant of extension of time limit (opposition procedure)
Sep 14, 2021
(Electronic) Receipt
Sep 14, 2021
Letter accompanying subsequently filed items
Sep 14, 2021
Request for extension of time limit
Jun 17, 2021
Communication of a notice of opposition and request to file observations
Jun 17, 2021
Notice of further oppositions to opponent(s)
Jun 8, 2021
Communication of a notice of opposition - first information to patent proprietor
Jun 2, 2021
(Electronic) Receipt
Jun 2, 2021
Any annexes (other than citation) to an opposition letter
Jun 2, 2021
Citation in opposition procedure - 001
Jun 2, 2021
Citation in opposition procedure - 002
Jun 2, 2021
Citation in opposition procedure - 003
Jun 2, 2021
Citation in opposition procedure - 004
Jun 2, 2021
Citation in opposition procedure - 005
Jun 2, 2021
Citation in opposition procedure - 006
Jun 2, 2021
Citation in opposition procedure - 007
Jun 2, 2021
Citation in opposition procedure - 008
Jun 2, 2021
Citation in opposition procedure - 009
Jun 2, 2021
Citation in opposition procedure - 010
Jun 2, 2021
Citation in opposition procedure - 011
Jun 2, 2021
Citation in opposition procedure - 012
Jun 2, 2021
Citation in opposition procedure - 013
Jun 2, 2021
Citation in opposition procedure - 014
Jun 2, 2021
Citation in opposition procedure - 015
Jun 2, 2021
Letter accompanying subsequently filed items
Jun 2, 2021
Notice of opposition
Jun 2, 2021
Notice of opposition
Feb 5, 2021
Communication concerning a request to change bibliographic data after the decision to grant/decision to maintain the patent in a
Jan 29, 2021
Communication of the registration of a transfer or change of name and/or address
Jan 26, 2021
(Electronic) Receipt
Jan 26, 2021
Letter accompanying subsequently filed items
Jan 26, 2021
Submission concerning change of applicant's address
Sep 14, 2020
Transmission of the certificate for a European patent pursuant to Rule 74 EPC
Aug 6, 2020
Decision to grant a European patent
Jul 23, 2020
(Electronic) Receipt
Jul 23, 2020
Filing of the translations of the claims
Jul 23, 2020
Letter accompanying subsequently filed items
Mar 25, 2020
Bibliographic data of the European patent application
Mar 25, 2020
Communication about intention to grant a European patent
Mar 25, 2020
Intention to grant (signatures)
Mar 25, 2020
Text intended for grant (clean copy)
Mar 25, 2020
Text intended for grant (version for approval)
Mar 11, 2020
(Electronic) Receipt
Mar 11, 2020
Claims
Mar 11, 2020
English translation of the claims
Mar 11, 2020
German translation of the claims
Mar 11, 2020
Letter accompanying subsequently filed items
Mar 11, 2020
Request for correction/amendment of the text proposed for grant sent from 01.04.2012
Nov 15, 2019
Bibliographic data of the European patent application
Nov 15, 2019
Communication about intention to grant a European patent
Nov 15, 2019
Intention to grant (signatures)
Nov 15, 2019
Text intended for grant (clean copy)
Nov 15, 2019
Text intended for grant (version for approval)
Oct 28, 2019
Examination started
Apr 10, 2019
Notification on forthcoming publication of bibliographic data
Feb 12, 2019
Communication regarding comments on written opinion/amendment of application/payment of claims fee
Feb 8, 2019
Communication to designated inventor
Feb 8, 2019
Communication to designated inventor
Feb 5, 2019
Priority search results copy provided by EPO
Jan 17, 2019
Annexes to the international preliminary examination report
Jan 17, 2019
Copy of the international preliminary examination report
Dec 21, 2018
(Electronic) Receipt
Dec 21, 2018
Request for entry into the European phase
Nov 16, 2018
Information on entry into European phase
Jul 4, 2018
Annex to International preliminary examination report
Jul 4, 2018
International preliminary examination report
Jul 4, 2018
International preliminary examination report - free text sheet
Jul 4, 2018
International preliminary examination report - points I-VIII
Jul 4, 2018
Transmittal of International Preliminary Examination Report
Jun 14, 2018
Notification of election of EPO
May 29, 2018
Amendments of documents (Article 19 PCT)
May 22, 2018
Notification of receipt of demand
May 3, 2018
(Electronic) Receipt
May 3, 2018
PCT demand form
May 3, 2018
PCT(IPEA): Amended sheet - claims
May 3, 2018
Payment of fees and costs
May 3, 2018
Reply to International Search Opinion
Jan 30, 2018
Priority document (electronically transmitted)
Jan 11, 2018
Copy of the international search report
Jan 11, 2018
Copy of the international search report
Jan 11, 2018
Published international application - A1
Dec 11, 2017
ISR: cited documents
Dec 11, 2017
International Search Report - copy in English for the IB
Dec 8, 2017
Written opinion of the ISA, boxes No. I to VIII
Dec 8, 2017
Written opinion of the ISA, cover sheet
Dec 8, 2017
Written opinion of the ISA, supplemental box
Sep 26, 2017
Notification of receipt of Search copy
Sep 14, 2017
Incoming letter related to ISA procedure
Sep 14, 2017
Incoming letter related to ISA procedure
Sep 14, 2017
Notification Concerning Documents Transmitted (copy for ISA/EP)
Sep 14, 2017
Request form for international application (copy for ISA/EP)
Jul 3, 2017
Abstract
Jul 3, 2017
Claims
Jul 3, 2017
Description
Jul 3, 2017
Drawings

EP3478400

KEEY AEROGEL

Application Number: EP17765204A
Filing Date: Jul 3, 2017
Status: Opposition Rejected; Sep 5, 2025
Publication Date: Sep 2, 2020
External Links: Slate, Register , Google Patents

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Method For Continuous Aerogel Production

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Dossier Documents

EP3478400