Fire Resistant Glazing Unit

Patent No. EP3527365 (titled "Fire Resistant Glazing Unit") was filed by Pyroguard UK on Feb 14, 2019. The application was issued on Aug 10, 2022.

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
PILKINGTON GROUP	May 10, 2023	FORTT

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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Nov 17, 2025
F3345 Forwarding of submissions to parties
Nov 12, 2025
(Electronic) Receipt
Nov 12, 2025
Citation in appeal procedure - 025
Nov 12, 2025
Letter accompanying subsequently filed items
Nov 12, 2025
Letter relating to Appeal Procedure
Sep 19, 2025
F3345 Forwarding of submissions to parties
Sep 16, 2025
(Electronic) Receipt
Sep 16, 2025
Citation in appeal procedure - 024
Sep 16, 2025
Letter accompanying subsequently filed items
Sep 16, 2025
Letter relating to Appeal Procedure
Aug 21, 2025
F3345 Forwarding of submissions to parties
Aug 15, 2025
(Electronic) Receipt
Aug 15, 2025
Letter accompanying subsequently filed items
Aug 15, 2025
Letter relating to Appeal Procedure
Jun 16, 2025
F3345 Forwarding of submissions to parties
Jun 10, 2025
(Electronic) Receipt
Jun 10, 2025
Amended claims with annotations
Jun 10, 2025
Amended claims with annotations
Jun 10, 2025
Amended claims with annotations
Jun 10, 2025
Amended claims with annotations
Jun 10, 2025
Amended claims with annotations
Jun 10, 2025
Amended claims with annotations
Jun 10, 2025
Amended claims with annotations
Jun 10, 2025
Amended claims with annotations
Jun 10, 2025
Amended claims with annotations
Jun 10, 2025
Amended claims with annotations
Jun 10, 2025
Amended claims with annotations
Jun 10, 2025
Amended claims with annotations
Jun 10, 2025
Amended claims with annotations
Jun 10, 2025
Amended claims with annotations
Jun 10, 2025
Auxiliary request during appeals procedure - 01
Jun 10, 2025
Auxiliary request during appeals procedure - 02
Jun 10, 2025
Auxiliary request during appeals procedure - 03
Jun 10, 2025
Auxiliary request during appeals procedure - 04
Jun 10, 2025
Auxiliary request during appeals procedure - 05
Jun 10, 2025
Auxiliary request during appeals procedure - 06
Jun 10, 2025
Auxiliary request during appeals procedure - 07
Jun 10, 2025
Auxiliary request during appeals procedure - 08
Jun 10, 2025
Auxiliary request during appeals procedure - 09
Jun 10, 2025
Auxiliary request during appeals procedure - 10
Jun 10, 2025
Auxiliary request during appeals procedure - 11
Jun 10, 2025
Auxiliary request during appeals procedure - 12
Jun 10, 2025
Auxiliary request during appeals procedure - 13
Jun 10, 2025
Auxiliary request during appeals procedure - 14
Jun 10, 2025
Citation in appeal procedure - 020
Jun 10, 2025
Citation in appeal procedure - 021
Jun 10, 2025
Citation in appeal procedure - 022
Jun 10, 2025
Citation in appeal procedure - 023
Jun 10, 2025
Letter accompanying subsequently filed items
Jun 10, 2025
Reply to appeal
Feb 11, 2025
F3344 Setting time limit for reply/ file observations to appeal (inter partes)
Feb 6, 2025
(Electronic) Receipt
Feb 6, 2025
Citation in appeal procedure - 019
Feb 6, 2025
Letter accompanying subsequently filed items
Feb 6, 2025
Statement of grounds of appeal
Jan 13, 2025
F3345 Forwarding of submissions to parties
Jan 8, 2025
(Electronic) Receipt
Jan 8, 2025
Letter accompanying subsequently filed items
Jan 8, 2025
Request concerning representative opponent
Dec 11, 2024
F3204 Communication of the file number to the parties
Dec 11, 2024
F3204 Communication of the file number to the parties
Dec 5, 2024
(Electronic) Receipt
Dec 5, 2024
Notice of appeal
Oct 8, 2024
Annex to the communication - opposition
Oct 8, 2024
Brief communication - Opposition proceedings
Oct 8, 2024
Brief communication - Opposition proceedings
Oct 8, 2024
Decision of the Opposition Division and instruction
Oct 8, 2024
Decision rejecting the opposition
Oct 8, 2024
Decision rejecting the opposition
Oct 8, 2024
Grounds for the decision (Annex) - opposition
Oct 8, 2024
Means of redress
Oct 8, 2024
Minutes of the oral proceedings (Opposition Division) - conclusion of the proceedings
Oct 8, 2024
Minutes of the oral proceedings (Opposition Division) - introduction of the parties
Oct 8, 2024
Provision of a copy of the minutes - opposition procedure
Oct 8, 2024
Provision of a copy of the minutes - opposition procedure
Oct 8, 2024
Scanned annex to a communication - opposition procedure
Sep 18, 2024
Information about the result of oral proceedings
Aug 14, 2024
Brief communication - Opposition proceedings
Aug 6, 2024
(Electronic) Receipt
Aug 6, 2024
Letter accompanying subsequently filed items
Aug 6, 2024
Written submission in preparation to/during oral proceedings
Jul 24, 2024
Brief communication - Opposition proceedings
Jul 18, 2024
(Electronic) Receipt
Jul 18, 2024
Brief communication - Opposition proceedings
Jul 18, 2024
Letter accompanying subsequently filed items
Jul 18, 2024
Written submission in preparation to/during oral proceedings
Jul 15, 2024
(Electronic) Receipt
Jul 15, 2024
Letter accompanying subsequently filed items
Jul 15, 2024
Written submission in preparation to/during oral proceedings
Jan 15, 2024
Advice of delivery
Jan 5, 2024
(Electronic) Receipt
Jan 5, 2024
Advice of delivery
Jan 5, 2024
Annex to the communication - opposition
Jan 5, 2024
Information concerning oral proceedings
Jan 5, 2024
Letter accompanying subsequently filed items
Jan 5, 2024
Scanned annex to a communication - opposition procedure
Jan 5, 2024
Summons to attend oral proceedings
Jan 5, 2024
Summons to attend oral proceedings
Jan 5, 2024
Transmittal of decision / summons - opposition
Jan 5, 2024
Transmittal of decision / summons - opposition
Sep 27, 2023
Brief communication - Opposition proceedings
Sep 22, 2023
(Electronic) Receipt
Sep 22, 2023
Auxiliary request during Opposition procedure - 01
Sep 22, 2023
Citation in opposition procedure - 018
Sep 22, 2023
Consolidated list of cited opposition documents
Sep 22, 2023
Letter accompanying subsequently filed items
Sep 22, 2023
Reply of the patent proprietor to the notice(s) of opposition
May 23, 2023
Communication of a notice of opposition and request to file observations
May 23, 2023
Notice of further oppositions to opponent(s)
May 16, 2023
Communication of a notice of opposition - first information to patent proprietor
May 10, 2023
(Electronic) Receipt
May 10, 2023
Citation in opposition procedure - 001
May 10, 2023
Citation in opposition procedure - 002
May 10, 2023
Citation in opposition procedure - 003
May 10, 2023
Citation in opposition procedure - 004
May 10, 2023
Citation in opposition procedure - 005
May 10, 2023
Citation in opposition procedure - 006
May 10, 2023
Citation in opposition procedure - 007
May 10, 2023
Citation in opposition procedure - 008
May 10, 2023
Citation in opposition procedure - 009
May 10, 2023
Citation in opposition procedure - 010
May 10, 2023
Citation in opposition procedure - 011
May 10, 2023
Citation in opposition procedure - 012
May 10, 2023
Citation in opposition procedure - 013
May 10, 2023
Citation in opposition procedure - 014
May 10, 2023
Citation in opposition procedure - 015
May 10, 2023
Citation in opposition procedure - 016
May 10, 2023
Citation in opposition procedure - 017
May 10, 2023
Notice of opposition
May 10, 2023
Notice of opposition
Aug 23, 2022
Transmission of the certificate for a European patent pursuant to Rule 74 EPC
Jul 14, 2022
Decision to grant a European patent
Jul 5, 2022
(Electronic) Receipt
Jul 5, 2022
French translation of claims
Jul 5, 2022
German translation of the claims
Jul 5, 2022
Letter accompanying subsequently filed items
Mar 7, 2022
Bibliographic data of the European patent application
Mar 7, 2022
Communication about intention to grant a European patent
Mar 7, 2022
Intention to grant (signatures)
Mar 7, 2022
Text intended for grant (clean copy)
Mar 7, 2022
Text intended for grant (version for approval)
Jan 5, 2022
(Electronic) Receipt
Jan 5, 2022
Amended claims with annotations
Jan 5, 2022
Claims
Jan 5, 2022
Letter accompanying subsequently filed items
Jan 5, 2022
Miscellaneous requests concerning client data
Jan 5, 2022
Request for correction/amendment of the text proposed for grant sent from 01.04.2012
Sep 10, 2021
Bibliographic data of the European patent application
Sep 10, 2021
Communication about intention to grant a European patent
Sep 10, 2021
Intention to grant (signatures)
Sep 10, 2021
Text intended for grant (clean copy)
Sep 10, 2021
Text intended for grant (version for approval)
May 13, 2021
(Electronic) Receipt
May 13, 2021
Amended claims with annotations
May 13, 2021
Claims
May 13, 2021
Letter accompanying subsequently filed items
May 13, 2021
Reply to communication from the Examining Division
Mar 4, 2021
Annex to the communication
Mar 4, 2021
Communication from the Examining Division
Jan 6, 2021
(Electronic) Receipt
Jan 6, 2021
Amended claims with annotations
Jan 6, 2021
Amended description with annotations
Jan 6, 2021
Claims
Jan 6, 2021
Description
Jan 6, 2021
Letter accompanying subsequently filed items
Jan 6, 2021
Reply to communication from the Examining Division
Sep 11, 2020
Annex to the communication
Sep 11, 2020
Communication from the Examining Division
Jul 31, 2020
(Electronic) Receipt
Jul 31, 2020
Amended claims with annotations
Jul 31, 2020
Claims
Jul 31, 2020
Letter accompanying subsequently filed items
Jul 31, 2020
Reply to communication from the Examining Division
Jul 20, 2020
Annex to the communication
Jul 20, 2020
Communication from the Examining Division
May 5, 2020
Examination started
Feb 18, 2020
(Electronic) Receipt
Feb 18, 2020
Letter accompanying subsequently filed items
Feb 18, 2020
Reply to Written Opinion prepared by the EPO
Aug 26, 2019
Reminder period for payment of examination fee/designation fee and correction of deficiencies in Written Opinion/amendment
Jul 24, 2019
Notification of forthcoming publication
Jun 18, 2019
Communication regarding the transmission of the European search report
Jun 18, 2019
European search opinion
Jun 18, 2019
European search report
Jun 18, 2019
Information on Search Strategy
Jun 3, 2019
Search started
May 6, 2019
Communication to designated inventor
May 6, 2019
Communication to designated inventor
Mar 12, 2019
Priority document (electronically transmitted)
Feb 14, 2019
Abstract
Feb 14, 2019
Acknowledgement of receipt of electronic submission of the request for grant of a European patent
Feb 14, 2019
Claims
Feb 14, 2019
Description
Feb 14, 2019
Designation of inventor
Feb 14, 2019
Drawings
Feb 14, 2019
Priority search results
Feb 14, 2019
Request for grant of a European patent

EP3527365

PYROGUARD UK

Application Number: EP19157136A
Filing Date: Feb 14, 2019
Status: Granted And Under Opposition; Jul 8, 2022
Publication Date: Aug 10, 2022
External Links: Slate, Register , Google Patents

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Fire Resistant Glazing Unit

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Dossier Documents

EP3527365