Method, In Particular 3D Printing Method, For The Production Of A Spectacle Lens

Patent No. EP3311994 (titled "Method, In Particular 3D Printing Method, For The Production Of A Spectacle Lens") was filed by Carl Zeiss on Oct 21, 2016. The application was issued on Jan 8, 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
ESSILOR	Oct 8, 2020	SANTARELLI

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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Jan 13, 2026
Communication of bibliographic data
Jan 13, 2026
Communication to opponent concerning maintenance
Jan 13, 2026
Communication with request to file translations
Jan 5, 2026
Maintenance of the patent with the documents specified in the final decision
Dec 22, 2025
Druckexemplar in opposition procedure
Dec 19, 2025
Decision of the Board of Appeal
Dec 19, 2025
F3032 Notification(s) of the decision
Dec 19, 2025
F3032 Notification(s) of the decision
Oct 8, 2025
F3013 Oral Proceedings: Forwarding minutes
Oct 8, 2025
F3013 Oral Proceedings: Forwarding minutes
Oct 8, 2025
F3316 Oral Proceedings: Minutes (Appellant: Opponent)
Aug 4, 2025
F3345 Forwarding of submissions to parties
Aug 1, 2025
(Electronic) Receipt
Aug 1, 2025
Amended claims with annotations
Aug 1, 2025
Amended claims with annotations
Aug 1, 2025
Auxiliary request during appeals procedure - 01
Aug 1, 2025
Letter accompanying subsequently filed items
Aug 1, 2025
Letter dealing with oral proceedings during the appeal procedure
Aug 1, 2025
Main request during appeals procedure
Jul 25, 2025
F3345 Forwarding of submissions to parties
Jul 21, 2025
(Electronic) Receipt
Jul 21, 2025
Letter accompanying subsequently filed items
Jul 21, 2025
Request for interpreters during oral proceedings
Jul 15, 2025
F3018 Oral proceedings: Confirmation interpreters
Jul 15, 2025
F3018 Oral proceedings: Confirmation interpreters
Apr 29, 2025
F3305 Communication of the Board of Appeal (ex parte/ inter partes)
Apr 29, 2025
F3305 Communication of the Board of Appeal (ex parte/ inter partes)
Jun 11, 2024
F3011.1 Oral Proceedings: summons
Jun 11, 2024
F3011.1 Oral Proceedings: summons
Jun 11, 2024
Standard Communication Rule 103 (2) EPC
Jun 11, 2024
Standard Communication Rule 103 (2) EPC
Jun 6, 2024
F3010 Oral proceedings: order for summons
Apr 10, 2024
Composition of the board (T)
Mar 22, 2024
F3345 Forwarding of submissions to parties
Mar 19, 2024
(Electronic) Receipt
Mar 19, 2024
Letter accompanying subsequently filed items
Mar 19, 2024
Reply to appeal
Nov 20, 2023
F3344 Setting time limit for reply/ file observations to appeal (inter partes)
Nov 9, 2023
(Electronic) Receipt
Nov 9, 2023
Letter accompanying subsequently filed items
Nov 9, 2023
Patent Document cited during the appeal procedure
Nov 9, 2023
Patent Document cited during the appeal procedure
Nov 9, 2023
Patent Document cited during the appeal procedure
Nov 9, 2023
Patent Document cited during the appeal procedure
Nov 9, 2023
Patent Document cited during the appeal procedure
Nov 9, 2023
Patent Document cited during the appeal procedure
Nov 9, 2023
Patent Document cited during the appeal procedure
Nov 9, 2023
Patent Document cited during the appeal procedure
Nov 9, 2023
Patent Document cited during the appeal procedure
Nov 9, 2023
Statement of grounds of appeal
Sep 21, 2023
F3204 Communication of the file number to the parties
Sep 13, 2023
(Electronic) Receipt
Sep 13, 2023
Letter accompanying subsequently filed items
Sep 13, 2023
Notice of appeal
Jul 18, 2023
(Electronic) Receipt
Jul 18, 2023
Advice of delivery
Jul 18, 2023
Letter accompanying subsequently filed items
Jul 14, 2023
Advice of delivery
Jul 13, 2023
Annex to the communication - opposition
Jul 13, 2023
Decision of the Opposition Division and instruction
Jul 13, 2023
Decision rejecting the opposition
Jul 13, 2023
Decision rejecting the opposition
Jul 13, 2023
Grounds for the decision (Annex) - opposition
Jul 13, 2023
Means of redress
Jul 13, 2023
Minutes of the oral proceedings (Opposition Division) - conclusion of the proceedings
Jul 13, 2023
Minutes of the oral proceedings (Opposition Division) - introduction of the parties
Jul 13, 2023
Provision of a copy of the minutes - opposition procedure
Jul 13, 2023
Provision of a copy of the minutes - opposition procedure
Jul 13, 2023
Scanned annex to a communication - opposition procedure
Jul 13, 2023
Transmittal of decision / summons - opposition
Jul 13, 2023
Transmittal of decision / summons - opposition
Jun 20, 2023
Information about the result of oral proceedings
Jun 5, 2023
Brief communication - Opposition proceedings
May 31, 2023
(Electronic) Receipt
May 31, 2023
Letter accompanying subsequently filed items
May 31, 2023
Written submission in preparation to/during oral proceedings
Apr 25, 2023
Brief communication - Opposition proceedings
Apr 20, 2023
(Electronic) Receipt
Apr 20, 2023
Brief communication - Opposition proceedings
Apr 20, 2023
Communication of amended entries
Apr 20, 2023
Letter accompanying subsequently filed items
Apr 20, 2023
Request for interpreters during oral proceedings
Apr 14, 2023
(Electronic) Receipt
Apr 14, 2023
Letter accompanying subsequently filed items
Apr 14, 2023
Written submission in preparation to/during oral proceedings
Dec 5, 2022
Advice of delivery
Nov 30, 2022
(Electronic) Receipt
Nov 30, 2022
Advice of delivery
Nov 30, 2022
Letter accompanying subsequently filed items
Nov 28, 2022
Annex to the communication - opposition
Nov 28, 2022
Information concerning oral proceedings
Nov 28, 2022
Scanned annex to a communication - opposition procedure
Nov 28, 2022
Summons to attend oral proceedings
Nov 28, 2022
Summons to attend oral proceedings
Nov 28, 2022
Transmittal of decision / summons - opposition
Nov 28, 2022
Transmittal of decision / summons - opposition
Oct 7, 2022
Notification concerning the date of oral proceedings
Oct 7, 2022
Notification concerning the date of oral proceedings
Oct 4, 2022
(Electronic) Receipt
Oct 4, 2022
Letter accompanying subsequently filed items
Oct 4, 2022
Oral proceedings: Request for postponement
Sep 16, 2022
Brief communication - Opposition proceedings
Sep 12, 2022
(Electronic) Receipt
Sep 12, 2022
Letter accompanying subsequently filed items
Sep 12, 2022
Written submission in preparation to/during oral proceedings
Aug 12, 2022
Brief communication - Opposition proceedings
Aug 12, 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 - 01
Aug 5, 2022
Auxiliary request during Opposition procedure - 02
Aug 5, 2022
Auxiliary request during Opposition procedure - 03
Aug 5, 2022
Letter accompanying subsequently filed items
Aug 5, 2022
Request for interpreters during oral proceedings
Aug 5, 2022
Written submission in preparation to/during oral proceedings
Aug 4, 2022
(Electronic) Receipt
Aug 4, 2022
Letter accompanying subsequently filed items
Aug 4, 2022
Written submission in preparation to/during oral proceedings
Jun 29, 2022
Brief communication - Opposition proceedings
Jun 17, 2022
(Electronic) Receipt
Jun 17, 2022
Request for interpreters during oral proceedings
Jun 15, 2022
Notification concerning the date of oral proceedings
Jun 15, 2022
Notification concerning the date of oral proceedings
Dec 7, 2021
Advice of delivery
Dec 6, 2021
Advice of delivery
Dec 2, 2021
Annex to the communication - opposition
Dec 2, 2021
Information concerning oral proceedings
Dec 2, 2021
Summons to attend oral proceedings
Dec 2, 2021
Summons to attend oral proceedings
Dec 2, 2021
Transmittal of decision / summons - opposition
Dec 2, 2021
Transmittal of decision / summons - opposition
Apr 12, 2021
Brief communication - Opposition proceedings
Mar 29, 2021
(Electronic) Receipt
Mar 29, 2021
Letter accompanying subsequently filed items
Mar 29, 2021
Reply of the patent proprietor to the notice(s) of opposition
Mar 16, 2021
Brief communication - Opposition proceedings
Mar 16, 2021
Grant of extension of time limit (opposition procedure)
Mar 15, 2021
Communication concerning the filing of a power of attorney
Mar 15, 2021
Communication of amended entries concerning the representative
Feb 25, 2021
(Electronic) Receipt
Feb 25, 2021
Letter accompanying subsequently filed items
Feb 25, 2021
Submission concerning change of proprietor's representative
Oct 20, 2020
Communication of a notice of opposition and request to file observations
Oct 20, 2020
Notice of further oppositions to opponent(s)
Oct 14, 2020
Communication of a notice of opposition - first information to patent proprietor
Oct 8, 2020
(Electronic) Receipt
Oct 8, 2020
Citation in opposition procedure - 001
Oct 8, 2020
Citation in opposition procedure - 002
Oct 8, 2020
Citation in opposition procedure - 003
Oct 8, 2020
Citation in opposition procedure - 004
Oct 8, 2020
Citation in opposition procedure - 005
Oct 8, 2020
Consolidated list of cited opposition documents
Oct 8, 2020
Notice of opposition
Oct 8, 2020
Notice of opposition
Jan 20, 2020
Transmission of the certificate for a European patent pursuant to Rule 74 EPC
Dec 12, 2019
Decision to grant a European patent
Nov 29, 2019
(Electronic) Receipt
Nov 29, 2019
English translation of the claims
Nov 29, 2019
Filing of the translations of the claims
Nov 29, 2019
French translation of claims
Nov 29, 2019
Letter accompanying subsequently filed items
Jul 31, 2019
Bibliographic data of the European patent application
Jul 31, 2019
Communication about intention to grant a European patent
Jul 31, 2019
Intention to grant (signatures)
Jul 31, 2019
Text intended for grant (clean copy)
Jul 31, 2019
Text intended for grant (version for approval)
May 3, 2019
Amended claims with annotations
May 3, 2019
Amended description with annotations
May 3, 2019
Claims
May 3, 2019
Description
May 3, 2019
Reply to communication from the Examining Division
Apr 30, 2019
(Electronic) Receipt
Apr 30, 2019
Amended claims with annotations
Apr 30, 2019
Amended claims with annotations
Apr 30, 2019
Amended description with annotations
Apr 30, 2019
Amended description with annotations
Apr 30, 2019
Claims
Apr 30, 2019
Claims
Apr 30, 2019
Cover sheet for fax transmission
Apr 30, 2019
Description
Apr 30, 2019
Description
Apr 30, 2019
Letter accompanying subsequently filed items
Apr 30, 2019
Reply to communication from the Examining Division
Apr 30, 2019
Reply to communication from the Examining Division
Jan 2, 2019
Annex to the communication
Jan 2, 2019
Communication from the Examining Division
Jan 2, 2019
Communication of the registration of a transfer or change of name and/or address
Dec 14, 2018
(Electronic) Receipt
Dec 14, 2018
Annexes in respect of a client data request
Dec 14, 2018
Annexes in respect of a client data request
Dec 14, 2018
Annexes in respect of a client data request
Dec 14, 2018
Annexes in respect of a client data request
Dec 14, 2018
Letter accompanying subsequently filed items
Dec 14, 2018
Miscellaneous requests concerning client data
Dec 13, 2018
Examination started
Nov 20, 2018
Indication of deficiencies in a request for registering a transfer of rights and invitation to correct them
Nov 7, 2018
(Electronic) Receipt
Nov 7, 2018
Annexes in respect of a client data request
Nov 7, 2018
Letter accompanying subsequently filed items
Nov 7, 2018
Submission concerning a transfer of rights (applicant)
Oct 22, 2018
(Electronic) Receipt
Oct 22, 2018
Amended claims filed after receipt of (European) search report
Oct 22, 2018
Amended claims with annotations
Oct 22, 2018
Amended description filed after receipt of (European) search report
Oct 22, 2018
Amended description with annotations
Oct 22, 2018
Amendments received before examination
Oct 22, 2018
Letter accompanying subsequently filed items
May 2, 2018
Reminder period for payment of examination fee/designation fee and correction of deficiencies in Written Opinion/amendment
Mar 28, 2018
Notification of forthcoming publication
Jul 24, 2017
Communication to designated inventor
Jul 12, 2017
Designation of inventor
Jul 12, 2017
Letter concerning the inventor
Jul 12, 2017
Letter concerning the inventor
Feb 27, 2017
Communication regarding the transmission of the European search report
Feb 27, 2017
European search opinion
Feb 27, 2017
European search report
Feb 27, 2017
Information on Search Strategy
Feb 21, 2017
Modified abstract
Feb 7, 2017
Search started
Dec 14, 2016
Communication to designated inventor
Dec 14, 2016
Communication to designated inventor
Oct 21, 2016
Abstract
Oct 21, 2016
Acknowledgement of receipt of electronic submission of the request for grant of a European patent
Oct 21, 2016
Claims
Oct 21, 2016
Description
Oct 21, 2016
Designation of inventor
Oct 21, 2016
Request for grant of a European patent

EP3311994

CARL ZEISS

Application Number: EP16195137A
Filing Date: Oct 21, 2016
Status: Granted And Under Opposition; Dec 6, 2019
Publication Date: Jan 8, 2020
External Links: Slate, EP3311994B1, Google Patents

IP Verse

Method, In Particular 3D Printing Method, For The Production Of A Spectacle Lens

Patent Summary

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Patent Oppositions

Dossier Documents

EP3311994