Heat-Sensitive Recording Material

Patent No. EP3148816 (titled "Heat-Sensitive Recording Material") was filed by Papierfabrik August Koehler on May 28, 2015. The application was issued on Feb 26, 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
MITSUBISHI HITEC PAPER EUROPE	Nov 26, 2020	EISENFUHR SPEISER
WIBBELMANN	Sep 16, 2020	-

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 25, 2025
Refund of fees
Nov 21, 2025
F3013 Oral Proceedings: Forwarding minutes
Nov 21, 2025
F3013 Oral Proceedings: Forwarding minutes
Nov 21, 2025
F3013 Oral Proceedings: Forwarding minutes
Nov 21, 2025
F3315 Oral Proceedings: Minutes (Appellant : Proprietor)
Nov 21, 2025
F3324 Closure of the appeal proceedings: withdrawal of the appeal/ application/ opposition
Nov 21, 2025
F3324 Closure of the appeal proceedings: withdrawal of the appeal/ application/ opposition
Nov 21, 2025
F3324 Closure of the appeal proceedings: withdrawal of the appeal/ application/ opposition
Nov 17, 2025
F3345 Forwarding of submissions to parties
Nov 14, 2025
(Electronic) Receipt
Nov 14, 2025
Letter accompanying subsequently filed items
Nov 14, 2025
Letter dealing with oral proceedings during the appeal procedure
Oct 20, 2025
F3345 Forwarding of submissions to parties
Oct 16, 2025
(Electronic) Receipt
Oct 16, 2025
F3345 Forwarding of submissions to parties
Oct 16, 2025
Letter accompanying subsequently filed items
Oct 16, 2025
Letter dealing with oral proceedings during the appeal procedure
Oct 15, 2025
(Electronic) Receipt
Oct 15, 2025
Letter accompanying subsequently filed items
Oct 15, 2025
Letter dealing with oral proceedings during the appeal procedure
Aug 5, 2025
F3345 Forwarding of submissions to parties
Aug 1, 2025
(Electronic) Receipt
Aug 1, 2025
Letter accompanying subsequently filed items
Aug 1, 2025
Letter dealing with oral proceedings during the appeal procedure
Jul 14, 2025
F3305 Communication of the Board of Appeal (ex parte/ inter partes)
Jul 14, 2025
F3305 Communication of the Board of Appeal (ex parte/ inter partes)
Jul 14, 2025
F3305 Communication of the Board of Appeal (ex parte/ inter partes)
Nov 26, 2024
F3345 Forwarding of submissions to parties
Nov 19, 2024
(Electronic) Receipt
Nov 19, 2024
Letter accompanying subsequently filed items
Nov 19, 2024
Letter dealing with oral proceedings during the appeal procedure
Nov 7, 2024
F3345 Forwarding of submissions to parties
Nov 4, 2024
(Electronic) Receipt
Nov 4, 2024
Letter accompanying subsequently filed items
Nov 4, 2024
Letter dealing with oral proceedings during the appeal procedure
Oct 22, 2024
F3011.1 Oral Proceedings: summons
Oct 22, 2024
F3011.1 Oral Proceedings: summons
Oct 22, 2024
F3011.1 Oral Proceedings: summons
Oct 17, 2024
F3010 Oral proceedings: order for summons
Oct 17, 2024
F3303.16 Change of composition of the Board (T)
Oct 10, 2024
F3303.16 Change of composition of the Board (T)
Oct 9, 2024
F3056 Communication: Change of Board due to the technical nature of the appeal
Oct 8, 2024
F3313 Order: change of Board due to the technical aspects of the appeal
May 24, 2024
F3017 Oral Proceedings: Notification of cancellation/postponing
May 24, 2024
F3017 Oral Proceedings: Notification of cancellation/postponing
May 24, 2024
F3017 Oral Proceedings: Notification of cancellation/postponing
May 22, 2024
F3345 Forwarding of submissions to parties
May 22, 2024
F3345 Forwarding of submissions to parties
May 21, 2024
F3014 Oral Proceedings: Order cancelling/postponing
May 16, 2024
(Electronic) Receipt
May 16, 2024
Annexes (other than cited documents) regarding appeal procedure
May 16, 2024
Letter accompanying subsequently filed items
May 16, 2024
Oral proceedings: Request for postponement
May 6, 2024
F3011.2 Oral Proceedings: Summons VICO
May 6, 2024
F3011.2 Oral Proceedings: Summons VICO
May 6, 2024
F3011.2 Oral Proceedings: Summons VICO
Apr 30, 2024
F3010 Oral proceedings: order for summons
Apr 30, 2024
F3303.16 Change of composition of the Board (T)
Jan 25, 2024
F3056 Communication: Change of Board due to the technical nature of the appeal
Jan 25, 2024
F3056 Communication: Change of Board due to the technical nature of the appeal
Jan 25, 2024
F3056 Communication: Change of Board due to the technical nature of the appeal
Jan 23, 2024
F3303.16 Change of composition of the Board (T)
Jan 18, 2024
F3313 Order: change of Board due to the technical aspects of the appeal
Jan 10, 2024
Composition of the board (T)
Jul 27, 2023
F3345 Forwarding of submissions to parties
Jul 27, 2023
F3345 Forwarding of submissions to parties
Jul 24, 2023
(Electronic) Receipt
Jul 24, 2023
Letter accompanying subsequently filed items
Jul 24, 2023
Reply to appeal
Jul 6, 2023
F3345 Forwarding of submissions to parties
Jul 6, 2023
F3345 Forwarding of submissions to parties
Jul 3, 2023
(Electronic) Receipt
Jul 3, 2023
Reply to appeal
Jul 3, 2023
Written submission in preparation to/during oral proceedings
Mar 28, 2023
F3345 Forwarding of submissions to parties
Mar 28, 2023
F3345 Forwarding of submissions to parties
Mar 24, 2023
Communication of amended entries concerning the representative
Mar 20, 2023
Letter accompanying subsequently filed items
Mar 20, 2023
Submission concerning change of applicant's representative
Mar 16, 2023
F3345 Forwarding of submissions to parties
Mar 13, 2023
(Electronic) Receipt
Mar 13, 2023
F3344 Setting time limit for reply/ file observations to appeal (inter partes)
Mar 13, 2023
Letter accompanying subsequently filed items
Mar 3, 2023
(Electronic) Receipt
Mar 3, 2023
Citation in appeal procedure - 056
Mar 3, 2023
Letter accompanying subsequently filed items
Mar 3, 2023
Statement of grounds of appeal
Jan 11, 2023
F3204 Communication of the file number to the parties
Jan 11, 2023
F3204 Communication of the file number to the parties
Jan 11, 2023
F3204 Communication of the file number to the parties
Jan 4, 2023
(Electronic) Receipt
Jan 4, 2023
Letter accompanying subsequently filed items
Jan 4, 2023
Notice of appeal
Oct 31, 2022
Advice of delivery
Oct 27, 2022
Advice of delivery
Oct 26, 2022
Annex to the communication - opposition
Oct 26, 2022
Decision of the Opposition Division and instruction
Oct 26, 2022
Decision revoking the European patent
Oct 26, 2022
Decision revoking the European patent
Oct 26, 2022
Decision revoking the European patent
Oct 26, 2022
Grounds for the decision (Annex) - opposition
Oct 26, 2022
Means of redress
Oct 26, 2022
Minutes of the oral proceedings (Opposition Division) - conclusion of the proceedings
Oct 26, 2022
Minutes of the oral proceedings (Opposition Division) - conclusion of the proceedings
Oct 26, 2022
Minutes of the oral proceedings (Opposition Division) - introduction of the parties
Oct 26, 2022
Provision of a copy of the minutes - opposition procedure
Oct 26, 2022
Provision of a copy of the minutes - opposition procedure
Oct 26, 2022
Provision of a copy of the minutes - opposition procedure
Oct 26, 2022
Scanned annex to a communication - opposition procedure
Oct 26, 2022
Transmittal of decision / summons - opposition
Oct 26, 2022
Transmittal of decision / summons - opposition
Oct 26, 2022
Transmittal of decision / summons - opposition
Oct 11, 2022
Brief communication - Opposition proceedings
Oct 11, 2022
Brief communication - Opposition proceedings
Oct 6, 2022
Information about the result of oral proceedings
Oct 4, 2022
(Electronic) Receipt
Oct 4, 2022
Citation in opposition procedure - 055
Oct 4, 2022
Consolidated list of cited opposition documents
Oct 4, 2022
Letter accompanying subsequently filed items
Oct 4, 2022
Written submission in preparation to/during oral proceedings
Aug 16, 2022
Brief communication - Opposition proceedings
Aug 16, 2022
Brief communication - Opposition proceedings
Aug 5, 2022
(Electronic) Receipt
Aug 5, 2022
Auxiliary request during Opposition procedure
Aug 5, 2022
Auxiliary request during Opposition procedure
Aug 5, 2022
Auxiliary request during Opposition procedure
Aug 5, 2022
Auxiliary request during Opposition procedure
Aug 5, 2022
Auxiliary request during Opposition procedure
Aug 5, 2022
Auxiliary request during Opposition procedure
Aug 5, 2022
Auxiliary request during Opposition procedure
Aug 5, 2022
Auxiliary request during Opposition procedure - 01
Aug 5, 2022
Auxiliary request during Opposition procedure - 02
Aug 5, 2022
Auxiliary request during Opposition procedure - 03
Aug 5, 2022
Auxiliary request during Opposition procedure - 04
Aug 5, 2022
Auxiliary request during Opposition procedure - 05
Aug 5, 2022
Auxiliary request during Opposition procedure - 06
Aug 5, 2022
Auxiliary request during Opposition procedure - 07
Aug 5, 2022
Citation in opposition procedure - 050
Aug 5, 2022
Citation in opposition procedure - 051
Aug 5, 2022
Citation in opposition procedure - 052
Aug 5, 2022
Citation in opposition procedure - 053
Aug 5, 2022
Citation in opposition procedure - 054
Aug 5, 2022
Letter accompanying subsequently filed items
Aug 5, 2022
Written submission in preparation to/during oral proceedings
Jul 28, 2022
Brief communication - Opposition proceedings
Jul 28, 2022
Brief communication - Opposition proceedings
Jul 21, 2022
(Electronic) Receipt
Jul 21, 2022
Authorisation
Jul 21, 2022
Citation in opposition procedure - 046
Jul 21, 2022
Citation in opposition procedure - 047
Jul 21, 2022
Citation in opposition procedure - 048
Jul 21, 2022
Citation in opposition procedure - 049
Jul 21, 2022
Letter accompanying subsequently filed items
Jul 21, 2022
Written submission in preparation to/during oral proceedings
Jun 28, 2022
(Electronic) Receipt
Jun 17, 2022
Notification concerning the date of oral proceedings
Jun 17, 2022
Notification concerning the date of oral proceedings
Jun 17, 2022
Notification concerning the date of oral proceedings
Jul 15, 2021
Brief communication - Opposition proceedings
Jul 15, 2021
Brief communication - Opposition proceedings
Jul 14, 2021
Advice of delivery
Jul 9, 2021
(Electronic) Receipt
Jul 9, 2021
Letter accompanying subsequently filed items
Jul 9, 2021
Written submission in preparation to/during oral proceedings
Jul 8, 2021
Advice of delivery
Jul 8, 2021
Advice of delivery
Jul 7, 2021
Annex to the communication - opposition
Jul 7, 2021
Summons to attend oral proceedings
Jul 7, 2021
Summons to attend oral proceedings
Jul 7, 2021
Summons to attend oral proceedings
Mar 30, 2021
Brief communication - Opposition proceedings
Mar 30, 2021
Brief communication - Opposition proceedings
Mar 25, 2021
(Electronic) Receipt
Mar 25, 2021
Letter accompanying subsequently filed items
Mar 25, 2021
Main request during Opposition procedure
Mar 25, 2021
Main request during Opposition procedure
Mar 25, 2021
Reply of the patent proprietor to the notice(s) of opposition
Dec 9, 2020
Communication of a notice of opposition and request to file observations
Dec 9, 2020
Notice of further oppositions to opponent(s)
Dec 9, 2020
Notice of further oppositions to opponent(s)
Dec 1, 2020
Communication of a notice of opposition - first information to patent proprietor
Nov 26, 2020
(Electronic) Receipt
Nov 26, 2020
Any annexes (other than citation) to an opposition letter
Nov 26, 2020
Citation in opposition procedure - 001
Nov 26, 2020
Citation in opposition procedure - 014
Nov 26, 2020
Citation in opposition procedure - 015
Nov 26, 2020
Citation in opposition procedure - 016
Nov 26, 2020
Citation in opposition procedure - 017
Nov 26, 2020
Citation in opposition procedure - 018
Nov 26, 2020
Citation in opposition procedure - 019
Nov 26, 2020
Citation in opposition procedure - 020
Nov 26, 2020
Citation in opposition procedure - 021
Nov 26, 2020
Citation in opposition procedure - 022
Nov 26, 2020
Citation in opposition procedure - 023
Nov 26, 2020
Citation in opposition procedure - 024
Nov 26, 2020
Citation in opposition procedure - 025
Nov 26, 2020
Citation in opposition procedure - 026
Nov 26, 2020
Citation in opposition procedure - 027
Nov 26, 2020
Citation in opposition procedure - 028
Nov 26, 2020
Citation in opposition procedure - 029
Nov 26, 2020
Citation in opposition procedure - 030
Nov 26, 2020
Citation in opposition procedure - 031
Nov 26, 2020
Citation in opposition procedure - 032
Nov 26, 2020
Citation in opposition procedure - 033
Nov 26, 2020
Citation in opposition procedure - 034
Nov 26, 2020
Citation in opposition procedure - 035
Nov 26, 2020
Citation in opposition procedure - 036
Nov 26, 2020
Citation in opposition procedure - 037
Nov 26, 2020
Citation in opposition procedure - 038
Nov 26, 2020
Citation in opposition procedure - 039
Nov 26, 2020
Citation in opposition procedure - 040
Nov 26, 2020
Citation in opposition procedure - 041
Nov 26, 2020
Citation in opposition procedure - 042
Nov 26, 2020
Citation in opposition procedure - 043
Nov 26, 2020
Citation in opposition procedure - 044
Nov 26, 2020
Citation in opposition procedure - 045
Nov 26, 2020
Notice of opposition
Nov 26, 2020
Notice of opposition
Nov 26, 2020
Patent document cited during the opposition procedure
Sep 22, 2020
Communication of a notice of opposition - first information to patent proprietor
Sep 16, 2020
(Electronic) Receipt
Sep 16, 2020
Citation in opposition procedure - 001
Sep 16, 2020
Citation in opposition procedure - 001
Sep 16, 2020
Citation in opposition procedure - 002
Sep 16, 2020
Citation in opposition procedure - 003
Sep 16, 2020
Citation in opposition procedure - 004
Sep 16, 2020
Citation in opposition procedure - 005
Sep 16, 2020
Citation in opposition procedure - 006
Sep 16, 2020
Citation in opposition procedure - 007
Sep 16, 2020
Citation in opposition procedure - 008
Sep 16, 2020
Citation in opposition procedure - 009
Sep 16, 2020
Citation in opposition procedure - 009
Sep 16, 2020
Citation in opposition procedure - 010
Sep 16, 2020
Citation in opposition procedure - 010
Sep 16, 2020
Citation in opposition procedure - 011
Sep 16, 2020
Citation in opposition procedure - 012
Sep 16, 2020
Citation in opposition procedure - 013
Sep 16, 2020
Notice of opposition
Sep 16, 2020
Notice of opposition
Mar 9, 2020
Transmission of the certificate for a European patent pursuant to Rule 74 EPC
Jan 30, 2020
Decision to grant a European patent
Jan 20, 2020
(Electronic) Receipt
Jan 20, 2020
English translation of the claims
Jan 20, 2020
Filing of the translations of the claims
Jan 20, 2020
French translation of claims
Jan 20, 2020
Letter accompanying subsequently filed items
Oct 9, 2019
Bibliographic data of the European patent application
Oct 9, 2019
Communication about intention to grant a European patent
Oct 9, 2019
Intention to grant (signatures)
Oct 9, 2019
Text intended for grant (clean copy)
Oct 9, 2019
Text intended for grant (version for approval)
Aug 13, 2019
Transmittal of third party observations to applicant
Aug 7, 2019
Observations by third parties
Jul 11, 2019
(Electronic) Receipt
Jul 11, 2019
Amended claims with annotations
Jul 11, 2019
Amended description with annotations
Jul 11, 2019
Claims
Jul 11, 2019
Description
Jul 11, 2019
Letter accompanying subsequently filed items
Jul 11, 2019
Reply to communication from the Examining Division
Mar 14, 2019
Annex to the communication
Mar 14, 2019
Communication from the Examining Division
Mar 12, 2019
Transmittal of third party observations to applicant
Mar 6, 2019
Observations by third parties
Dec 17, 2018
(Electronic) Receipt
Dec 17, 2018
Letter accompanying subsequently filed items
Dec 17, 2018
Reply to communication from the Examining Division
Oct 25, 2018
Grant of extension of time limit (examination procedure)
Oct 19, 2018
(Electronic) Receipt
Oct 19, 2018
Letter accompanying subsequently filed items
Oct 19, 2018
Request for extension of time limit to communication from the Examining Division
Jun 11, 2018
Annex to the communication
Jun 11, 2018
Communication from the Examining Division
Mar 8, 2018
(Electronic) Receipt
Mar 8, 2018
Amended claims with annotations
Mar 8, 2018
Claims
Mar 8, 2018
Letter accompanying subsequently filed items
Mar 8, 2018
Non-patent literature cited during the examination procedure
Mar 8, 2018
Reply to communication from the Examining Division
Nov 28, 2017
Annex to the communication
Nov 28, 2017
Communication from the Examining Division
Nov 28, 2017
Non-patent literature cited during the examination procedure
Nov 21, 2017
Examination started
Oct 30, 2017
(Electronic) Receipt
Oct 30, 2017
Letter accompanying subsequently filed items
Oct 30, 2017
Priority search results
Oct 30, 2017
Reply to invitation to file a copy of priority search results
Sep 4, 2017
Invitation to file a copy of search results(priority)
Jul 27, 2017
(Electronic) Receipt
Jul 27, 2017
Amended claims filed after receipt of (European) search report
Jul 27, 2017
Amended claims with annotations
Jul 27, 2017
Amendments received before examination
Jul 27, 2017
Letter accompanying subsequently filed items
May 3, 2017
Transmittal of third party observations to applicant
Apr 24, 2017
Observations by third parties
Apr 24, 2017
Patent document filed by a Third party
Apr 24, 2017
Patent document filed by a Third party
Apr 24, 2017
Patent document filed by a Third party
Apr 24, 2017
Patent document filed by a Third party
Apr 24, 2017
Patent document filed by a Third party
Apr 24, 2017
Patent document filed by a Third party
Apr 24, 2017
Patent document filed by a Third party
Apr 24, 2017
Patent document filed by a Third party
Apr 24, 2017
Patent document filed by a Third party
Mar 8, 2017
Notification on forthcoming publication of bibliographic data
Jan 17, 2017
Communication concerning correction of deficiencies in written opinion/amendment of application/payment of claims fee
Jan 13, 2017
Communication to designated inventor
Dec 12, 2016
Copy of the international preliminary report on patentability
Nov 28, 2016
(Electronic) Receipt
Nov 28, 2016
Request for entry into the European phase
Oct 7, 2016
Information on entry into European phase
Aug 11, 2016
Notification of the recording of a change
Aug 11, 2016
Notification of the recording of a change
Aug 11, 2016
Notification of the recording of a change
Jan 4, 2016
Priority document (electronically transmitted)
Dec 3, 2015
Copy of the international search report
Dec 3, 2015
Copy of the international search report
Dec 3, 2015
Published international application - A1
Nov 17, 2015
Notification of the recording of a change
Aug 24, 2015
ISR: cited documents
Aug 24, 2015
International Search Report - copy in English for the IB
Aug 21, 2015
Written opinion of the ISA, boxes No. I to VIII
Aug 21, 2015
Written opinion of the ISA, cover sheet
Aug 21, 2015
Written opinion of the ISA, supplemental box
May 28, 2015
(Electronic) Receipt
May 28, 2015
Abstract
May 28, 2015
Claims
May 28, 2015
Description

EP3148816

PAPIERFABRIK AUGUST KOEHLER

Application Number: EP15726926A
Filing Date: May 28, 2015
Status: Granted And Under Opposition; Jan 24, 2020
Publication Date: Feb 26, 2020
External Links: Slate, Register , Google Patents

IP Verse

Heat-Sensitive Recording Material

Patent Summary

Patent Family

Patent Oppositions (2)

Dossier Documents

EP3148816