Reduced Distortion Spectacle Lens

Patent No. EP3526641 (titled "Reduced Distortion Spectacle Lens") was filed by Carl Zeiss on Oct 13, 2017. The application was issued on Mar 18, 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
RODENSTOCK	Dec 18, 2020	MULLER BORE & PARTNER PATENTANWALTE PARTG 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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Feb 7, 2023
Communication to the parties concerning the termination of the opposition proceedings (opponent)
Feb 7, 2023
Communication to the parties concerning the termination of the opposition proceedings (proprietor)
Feb 2, 2023
Termination of the opposition proceedings with revocation of patent
Oct 21, 2022
Advice of delivery
Oct 19, 2022
Advice of delivery
Oct 18, 2022
Annex to the communication - opposition
Oct 18, 2022
Consolidated list of cited opposition documents
Oct 18, 2022
Decision revoking the European patent
Oct 18, 2022
Decision revoking the European patent
Oct 18, 2022
Grounds for the decision (Annex) - opposition
Oct 18, 2022
Means of redress
Oct 18, 2022
Minutes of the oral proceedings (Opposition Division) - conclusion of the proceedings
Oct 18, 2022
Minutes of the oral proceedings (Opposition Division) - introduction of the parties
Oct 18, 2022
Provision of a copy of the minutes - opposition procedure
Oct 18, 2022
Provision of a copy of the minutes - opposition procedure
Oct 18, 2022
Transmittal of decision / summons - opposition
Oct 18, 2022
Transmittal of decision / summons - opposition
Jul 1, 2022
Brief communication - Opposition proceedings
Jun 29, 2022
Information about the result of oral proceedings
Jun 24, 2022
(Electronic) Receipt
Jun 24, 2022
Letter accompanying subsequently filed items
Jun 24, 2022
Oral proceedings: reply to date proposed
May 10, 2022
Brief communication - Opposition proceedings
May 9, 2022
Brief communication - Opposition proceedings
May 9, 2022
Brief communication - Opposition proceedings
May 6, 2022
Brief communication - Opposition proceedings
May 2, 2022
(Electronic) Receipt
May 2, 2022
Letter accompanying subsequently filed items
May 2, 2022
Oral proceedings: reply to date proposed
Apr 29, 2022
(Electronic) Receipt
Apr 29, 2022
(Electronic) Receipt
Apr 29, 2022
Auxiliary request during Opposition procedure
Apr 29, 2022
Auxiliary request during Opposition procedure
Apr 29, 2022
Auxiliary request during Opposition procedure
Apr 29, 2022
Auxiliary request during Opposition procedure
Apr 29, 2022
Auxiliary request during Opposition procedure - 01
Apr 29, 2022
Auxiliary request during Opposition procedure - 02
Apr 29, 2022
Auxiliary request during Opposition procedure - 03
Apr 29, 2022
Auxiliary request during Opposition procedure - 04
Apr 29, 2022
Letter accompanying subsequently filed items
Apr 29, 2022
Letter accompanying subsequently filed items
Apr 29, 2022
Main request during Opposition procedure
Apr 29, 2022
Main request during Opposition procedure
Apr 29, 2022
Request for interpreters during oral proceedings
Apr 29, 2022
Written submission in preparation to/during oral proceedings
Apr 27, 2022
(Electronic) Receipt
Apr 27, 2022
Letter accompanying subsequently filed items
Apr 27, 2022
Written submission in preparation to/during oral proceedings
Apr 21, 2022
Notification concerning the date of oral proceedings
Apr 21, 2022
Notification concerning the date of oral proceedings
Feb 18, 2022
(Electronic) Receipt
Feb 18, 2022
Letter accompanying subsequently filed items
Oct 13, 2021
Advice of delivery
Oct 11, 2021
Advice of delivery
Oct 7, 2021
Annex to the communication - opposition
Oct 7, 2021
Information concerning oral proceedings
Oct 7, 2021
Summons to attend oral proceedings
Oct 7, 2021
Summons to attend oral proceedings
Oct 7, 2021
Transmittal of decision / summons - opposition
Oct 7, 2021
Transmittal of decision / summons - opposition
Jun 7, 2021
Brief communication - Opposition proceedings
Jun 1, 2021
(Electronic) Receipt
Jun 1, 2021
Auxiliary request during Opposition procedure - 01
Jun 1, 2021
Auxiliary request during Opposition procedure - 02
Jun 1, 2021
Auxiliary request during Opposition procedure - 03
Jun 1, 2021
Auxiliary request during Opposition procedure - 04
Jun 1, 2021
Letter accompanying subsequently filed items
Jun 1, 2021
Main request during Opposition procedure
Jun 1, 2021
Reply of the patent proprietor to the notice(s) of opposition
Jan 22, 2021
Communication of a notice of opposition and request to file observations
Jan 22, 2021
Notice of further oppositions to opponent(s)
Jan 12, 2021
Communication of a notice of opposition - first information to patent proprietor
Dec 18, 2020
Any annexes (other than citation) to an opposition letter
Dec 18, 2020
Citation in opposition procedure - 001
Dec 18, 2020
Citation in opposition procedure - 001
Dec 18, 2020
Citation in opposition procedure - 002
Dec 18, 2020
Citation in opposition procedure - 002
Dec 18, 2020
Citation in opposition procedure - 003
Dec 18, 2020
Citation in opposition procedure - 003
Dec 18, 2020
Citation in opposition procedure - 004
Dec 18, 2020
Citation in opposition procedure - 005
Dec 18, 2020
Citation in opposition procedure - 006
Dec 18, 2020
Citation in opposition procedure - 007
Dec 18, 2020
Citation in opposition procedure - 008
Dec 18, 2020
Citation in opposition procedure - 009
Dec 18, 2020
Citation in opposition procedure - 010
Dec 18, 2020
Citation in opposition procedure - 011
Dec 18, 2020
Citation in opposition procedure - 012
Dec 18, 2020
Citation in opposition procedure - 013
Dec 18, 2020
Citation in opposition procedure - 014
Dec 18, 2020
Citation in opposition procedure - 015
Dec 18, 2020
Citation in opposition procedure - 016
Dec 18, 2020
Citation in opposition procedure - 017
Dec 18, 2020
Citation in opposition procedure - 018
Dec 18, 2020
Citation in opposition procedure - 019
Dec 18, 2020
Citation in opposition procedure - 020
Dec 18, 2020
Citation in opposition procedure - 021
Dec 18, 2020
Citation in opposition procedure - 022
Dec 18, 2020
Citation in opposition procedure - 023
Dec 18, 2020
Citation in opposition procedure - 024
Dec 18, 2020
Citation in opposition procedure - 025
Dec 18, 2020
Consolidated list of cited opposition documents
Dec 18, 2020
Notice of opposition
Dec 18, 2020
Notice of opposition
Mar 30, 2020
Transmission of the certificate for a European patent pursuant to Rule 74 EPC
Feb 20, 2020
Decision to grant a European patent
Feb 6, 2020
(Electronic) Receipt
Feb 6, 2020
French translation of claims
Feb 6, 2020
German translation of the claims
Feb 6, 2020
Letter accompanying subsequently filed items
Oct 23, 2019
Bibliographic data of the European patent application
Oct 23, 2019
Communication about intention to grant a European patent
Oct 23, 2019
Intention to grant (signatures)
Oct 23, 2019
Text intended for grant (clean copy)
Oct 23, 2019
Text intended for grant (version for approval)
Sep 27, 2019
Examination started
Jul 24, 2019
Notification on forthcoming publication of bibliographic data
May 22, 2019
Communication to designated inventor
May 18, 2019
Priority search results copy provided by EPO
May 10, 2019
(Electronic) Receipt
May 10, 2019
Amended claims filed after receipt of (European) search report
May 10, 2019
Amended claims with annotations
May 10, 2019
Amended description filed after receipt of (European) search report
May 10, 2019
Amended description with annotations
May 10, 2019
Amendments received before examination
May 10, 2019
Request for entry into the European phase
Apr 29, 2019
Annexes to the international preliminary examination report
Apr 29, 2019
Copy of the international preliminary examination report
Feb 22, 2019
Information on entry into European phase
Oct 5, 2018
Annex to International preliminary examination report
Oct 5, 2018
International preliminary examination report
Oct 5, 2018
International preliminary examination report - free text sheet
Oct 5, 2018
International preliminary examination report - points I-VIII
Oct 5, 2018
Transmittal of International Preliminary Examination Report
Sep 4, 2018
Notification of election of EPO
Aug 21, 2018
Notification of receipt of demand
Aug 14, 2018
(Electronic) Receipt
Aug 14, 2018
PCT demand form
Aug 14, 2018
PCT(IPEA): Amended sheet - claims
Aug 14, 2018
PCT(IPEA): Amended sheet - claims
Aug 14, 2018
Payment of fees and costs
Aug 14, 2018
Reply to International Search Opinion
May 7, 2018
Priority document (electronically transmitted)
Apr 19, 2018
Copy of the international search report
Apr 19, 2018
Published international application - A1
Jan 30, 2018
ISR: cited documents
Jan 29, 2018
Written opinion of the ISA, boxes No. I to VIII
Jan 29, 2018
Written opinion of the ISA, cover sheet
Jan 29, 2018
Written opinion of the ISA, supplemental box
Jan 15, 2018
Notification relating to declaration under Rule 4.17 PCT (copy for ISA/EP)
Dec 4, 2017
Annex
Dec 4, 2017
Incoming letter related to ISA procedure
Dec 4, 2017
Incoming letter related to ISA procedure
Dec 4, 2017
Submission concerning representation
Dec 4, 2017
Submission concerning representation
Dec 4, 2017
Submission concerning representation
Dec 4, 2017
Substitute sheet (Rule 26) - request form for ISA/EP
Nov 7, 2017
Notification of receipt of Search copy
Oct 30, 2017
Abstract
Oct 30, 2017
Annex
Oct 30, 2017
Claims
Oct 30, 2017
Description
Oct 30, 2017
Drawings
Oct 30, 2017
Fee calculation sheet for an international application
Oct 30, 2017
Incoming communication concerning PCT Direct
Oct 30, 2017
Incoming letter related to ISA procedure
Oct 30, 2017
Notification Concerning Payment of Prescribed Fees (copy for ISA/EP)
Oct 30, 2017
Notification of the International Application Number and of the International Filing Date (copy for ISA/EP)
Oct 30, 2017
Request form for international application (copy for ISA/EP)

EP3526641

CARL ZEISS

Application Number: EP17788090A
Filing Date: Oct 13, 2017
Status: Revoked; Feb 3, 2023
Publication Date: Mar 18, 2020
External Links: Slate, Register , Google Patents

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Dossier Documents

EP3526641