Air Purification Device

Patent No. EP3493891 (titled "Air Purification Device") was filed by DR Schn on Mar 20, 2017. The application was issued on Dec 25, 2019.

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
MAHLE	Sep 23, 2020	GRAUEL

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 30, 2022
Communication to the parties concerning the termination of the opposition proceedings (opponent)
Sep 30, 2022
Communication to the parties concerning the termination of the opposition proceedings (proprietor)
Sep 23, 2022
Termination of the opposition proceedings with revocation of patent
Jul 5, 2022
Advice of delivery
Jun 21, 2022
(Electronic) Receipt
Jun 21, 2022
Advice of delivery
Jun 21, 2022
Letter accompanying subsequently filed items
Jun 15, 2022
Decision of the Opposition Division and instruction
Jun 15, 2022
Decision revoking the European patent
Jun 15, 2022
Decision revoking the European patent
Jun 15, 2022
Grounds for the decision (Annex) - opposition
Jun 15, 2022
Means of redress
Jun 15, 2022
Transmittal of decision / summons - opposition
Jun 15, 2022
Transmittal of decision / summons - opposition
May 6, 2022
Brief communication - Opposition proceedings
Apr 27, 2022
(Electronic) Receipt
Apr 27, 2022
Letter accompanying subsequently filed items
Apr 27, 2022
Letter regarding the opposition procedure (no time limit)
Apr 11, 2022
Notification concerning the date of oral proceedings
Apr 11, 2022
Notification concerning the date of oral proceedings
Apr 5, 2022
Brief communication - Opposition proceedings
Mar 31, 2022
(Electronic) Receipt
Mar 31, 2022
Letter accompanying subsequently filed items
Mar 31, 2022
Written submission in preparation to/during oral proceedings
Jan 19, 2022
Brief communication - Opposition proceedings
Jan 14, 2022
(Electronic) Receipt
Jan 14, 2022
Letter accompanying subsequently filed items
Jan 14, 2022
Request for interpreters during oral proceedings
Jan 11, 2022
Advice of delivery
Dec 22, 2021
Advice of delivery
Dec 17, 2021
Annex to the communication - opposition
Dec 17, 2021
Information concerning oral proceedings
Dec 17, 2021
Summons to attend oral proceedings
Dec 17, 2021
Summons to attend oral proceedings
Dec 17, 2021
Transmittal of decision / summons - opposition
Dec 17, 2021
Transmittal of decision / summons - opposition
Dec 21, 2020
Brief communication - Opposition proceedings
Dec 14, 2020
Auxiliary request during Opposition procedure
Dec 14, 2020
Auxiliary request during Opposition procedure - 01
Dec 14, 2020
Reply of the patent proprietor to the notice(s) of opposition
Oct 7, 2020
Communication of a notice of opposition and request to file observations
Oct 7, 2020
Notice of further oppositions to opponent(s)
Sep 29, 2020
Communication of a notice of opposition - first information to patent proprietor
Sep 23, 2020
(Electronic) Receipt
Sep 23, 2020
Any annexes (other than citation) to an opposition letter
Sep 23, 2020
Citation in opposition procedure - 001
Sep 23, 2020
Citation in opposition procedure - 002
Sep 23, 2020
Citation in opposition procedure - 003
Sep 23, 2020
Citation in opposition procedure - 004
Sep 23, 2020
Citation in opposition procedure - 005
Sep 23, 2020
Citation in opposition procedure - 006
Sep 23, 2020
Citation in opposition procedure - 007
Sep 23, 2020
Citation in opposition procedure - 008
Sep 23, 2020
Citation in opposition procedure - 009
Sep 23, 2020
Citation in opposition procedure - 010
Sep 23, 2020
Citation in opposition procedure - 011
Sep 23, 2020
Consolidated list of cited opposition documents
Sep 23, 2020
International publication (Pamphlet)
Sep 23, 2020
Notice of opposition
Sep 23, 2020
Notice of opposition
Jan 3, 2020
Transmission of the certificate for a European patent pursuant to Rule 74 EPC
Nov 28, 2019
Decision to grant a European patent
Nov 14, 2019
(Electronic) Receipt
Nov 14, 2019
Filing of the translations of the claims
Nov 14, 2019
Letter accompanying subsequently filed items
Nov 6, 2019
Bibliographic data of the European patent application
Nov 6, 2019
Communication about intention to grant a European patent
Nov 6, 2019
Intention to grant (signatures)
Nov 6, 2019
Text intended for grant (clean copy)
Nov 6, 2019
Text intended for grant (version for approval)
Oct 18, 2019
(Electronic) Receipt
Oct 18, 2019
English translation of the claims
Oct 18, 2019
French translation of claims
Oct 18, 2019
Letter accompanying subsequently filed items
Oct 18, 2019
Request for correction/amendment of the text proposed for grant sent from 01.04.2012
Jul 15, 2019
Bibliographic data of the European patent application
Jul 15, 2019
Communication about intention to grant a European patent
Jul 15, 2019
Intention to grant (signatures)
Jul 15, 2019
Text intended for grant (clean copy)
Jul 15, 2019
Text intended for grant (version for approval)
Jun 12, 2019
Examination started
May 28, 2019
(Electronic) Receipt
May 28, 2019
Letter accompanying subsequently filed items
May 28, 2019
Statement of non-availability of priority search results
May 20, 2019
Invitation to file a copy of search results(priority)
May 15, 2019
Notification on forthcoming publication of bibliographic data
Apr 23, 2019
(Electronic) Receipt
Apr 23, 2019
Letter accompanying subsequently filed items
Apr 23, 2019
Matter concerning the application
Mar 27, 2019
Annexes to the international preliminary examination report
Mar 27, 2019
Copy of the international preliminary examination report
Mar 22, 2019
Communication regarding comments on written opinion/amendment of application/payment of claims fee
Mar 20, 2019
Communication to designated inventor
Mar 20, 2019
Communication to designated inventor
Mar 20, 2019
Communication to designated inventor
Mar 20, 2019
Confirmation of effective date of early entry
Mar 7, 2019
(Electronic) Receipt
Mar 7, 2019
Request for entry into the European phase
Feb 1, 2019
Information on entry into European phase
Jan 8, 2019
Annex to International preliminary examination report
Jan 8, 2019
International preliminary examination report
Jan 8, 2019
International preliminary examination report - free text sheet
Jan 8, 2019
International preliminary examination report - points I-VIII
Jan 8, 2019
Transmittal of International Preliminary Examination Report
Sep 14, 2018
(Electronic) Receipt
Sep 14, 2018
Letter regarding PCTII procedure
Sep 14, 2018
PCT(IPEA): Amended sheet - claims
Sep 14, 2018
PCT(IPEA): Amended sheet - claims
Sep 14, 2018
PCT(IPEA): Amended sheet - description
Sep 14, 2018
PCT(IPEA): Amended sheet - description
Sep 14, 2018
Reply to communication PCT/IPEA/408
Aug 17, 2018
Written opinion
Aug 17, 2018
Written opinion - free text sheet
Aug 17, 2018
Written opinion - points I-VIII
Apr 26, 2018
Priority document (electronically transmitted)
Apr 26, 2018
Priority document (electronically transmitted)
Apr 4, 2018
Notification of election of EPO
Mar 29, 2018
Copy of the international search report
Mar 29, 2018
Copy of the international search report
Mar 29, 2018
Published international application - A1
Oct 27, 2017
Amendments of documents (Article 19 PCT) (without attachments)
Sep 5, 2017
Notification of the recording of a change
Sep 5, 2017
Notification of the recording of a change
Aug 22, 2017
Notification of receipt of demand
Aug 10, 2017
Incoming letter related to PCT RO
Aug 9, 2017
(Electronic) Receipt
Aug 9, 2017
Abstract
Aug 9, 2017
Letter regarding PCTII procedure
Aug 9, 2017
PCT demand form
Aug 9, 2017
PCT(IPEA): Amended sheet - claims
Aug 9, 2017
PCT(IPEA): Amended sheet - description
Aug 9, 2017
PCT(IPEA): Amended sheet - description
Aug 9, 2017
Payment of fees and costs
Aug 9, 2017
Reply to International Search Opinion
Aug 9, 2017
Submission concerning representation
Aug 2, 2017
Incoming letter related to PCT RO
Jul 31, 2017
Submission concerning representation
Jun 14, 2017
ISR: cited documents
Jun 14, 2017
International Search Report - copy in English for the IB
Jun 8, 2017
Copy of the international preliminary report on patentability
Jun 8, 2017
Written opinion of the ISA, boxes No. I to VIII
Jun 8, 2017
Written opinion of the ISA, cover sheet
Jun 8, 2017
Written opinion of the ISA, supplemental box
May 31, 2017
Notification relating to declaration under Rule 4.17 PCT (copy for ISA/EP)
May 31, 2017
Notification relating to declaration under Rule 4.17 PCT (copy for ISA/EP)
May 9, 2017
Incoming letter related to PCT RO
May 9, 2017
RO101 Declaration
Apr 24, 2017
Incoming letter related to PCT RO
Apr 6, 2017
Notification of receipt of Search copy
Mar 29, 2017
Notification of the international application number and of the international filing date
Mar 25, 2017
Request form for international application (copy for ISA/EP)
Mar 20, 2017
(Electronic) Receipt
Mar 20, 2017
Abstract
Mar 20, 2017
Claims
Mar 20, 2017
Description
Mar 20, 2017
Document concerning fees and payments
Mar 20, 2017
Drawings
Mar 20, 2017
Electronic request for grant of an International application

EP3493891

DR SCHN

Application Number: EP17712945A
Filing Date: Mar 20, 2017
Status: Revoked; Sep 30, 2022
Publication Date: Dec 25, 2019
External Links: Slate, Register , Google Patents

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Air Purification Device

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Dossier Documents

EP3493891