Surface-Modified Calcium Oxide

Patent No. EP2920248 (titled "Surface-Modified Calcium Oxide") was filed by Kalkfabrik Netstal on Oct 18, 2013. The application was issued on Nov 7, 2018.

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
SCHAEFER KALK	Jul 25, 2019	MAI BESIER

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 21, 2022
Communication to the parties concerning the termination of the opposition proceedings (proprietor)
Feb 16, 2022
Termination of the opposition proceedings with maintenance of patent
Nov 8, 2021
(Electronic) Receipt
Nov 8, 2021
Advice of delivery
Nov 8, 2021
Letter accompanying subsequently filed items
Nov 5, 2021
Decision to discontinue the opposition proceedings
Nov 5, 2021
Notification concerning the date of oral proceedings
Nov 5, 2021
Transmittal of decision / summons - opposition
Nov 4, 2021
Brief communication - Opposition proceedings
Nov 4, 2021
Brief communication - Opposition proceedings
Oct 26, 2021
(Electronic) Receipt
Oct 26, 2021
Letter accompanying subsequently filed items
Oct 26, 2021
Withdrawal of an opposition
Oct 4, 2021
Notification concerning the date of oral proceedings
Oct 4, 2021
Notification concerning the date of oral proceedings
May 14, 2021
(Electronic) Receipt
May 14, 2021
Advice of delivery
May 14, 2021
Communication about missing advice of delivery
May 14, 2021
Letter accompanying subsequently filed items
Apr 7, 2021
Advice of delivery
Apr 6, 2021
Annex to the communication - opposition
Apr 6, 2021
Information concerning oral proceedings
Apr 6, 2021
Summons to attend oral proceedings
Apr 6, 2021
Summons to attend oral proceedings
Apr 6, 2021
Transmittal of decision / summons - opposition
Apr 6, 2021
Transmittal of decision / summons - opposition
Oct 28, 2020
Brief communication - Opposition proceedings
Oct 23, 2020
(Electronic) Receipt
Oct 23, 2020
(Electronic) Receipt
Oct 23, 2020
Letter accompanying subsequently filed items
Oct 23, 2020
Letter accompanying subsequently filed items
Oct 23, 2020
Letter regarding the opposition procedure (no time limit)
Oct 23, 2020
Letter regarding the opposition procedure (no time limit)
Sep 16, 2020
Communication of amended entries
Sep 1, 2020
Request concerning representative opponent
Jul 17, 2020
Brief communication - Opposition proceedings
Jul 9, 2020
Letter regarding the opposition procedure (no time limit)
Jul 9, 2020
Priority document
Jan 14, 2020
(Electronic) Receipt
Jan 14, 2020
Citation in opposition procedure - 018
Jan 14, 2020
Letter accompanying subsequently filed items
Jan 14, 2020
Letter regarding the opposition procedure (no time limit)
Jan 7, 2020
Request for documents
Jan 2, 2020
Brief communication - Opposition proceedings
Dec 17, 2019
(Electronic) Receipt
Dec 17, 2019
Auxiliary request during Opposition procedure
Dec 17, 2019
Auxiliary request during Opposition procedure
Dec 17, 2019
Auxiliary request during Opposition procedure
Dec 17, 2019
Auxiliary request during Opposition procedure - 01
Dec 17, 2019
Auxiliary request during Opposition procedure - 02
Dec 17, 2019
Auxiliary request during Opposition procedure - 03
Dec 17, 2019
Citation in opposition procedure - 015
Dec 17, 2019
Citation in opposition procedure - 016
Dec 17, 2019
Citation in opposition procedure - 017
Dec 17, 2019
Consolidated list of cited opposition documents
Dec 17, 2019
Letter accompanying subsequently filed items
Dec 17, 2019
Main request during Opposition procedure
Dec 17, 2019
Reply of the patent proprietor to the notice(s) of opposition
Aug 22, 2019
Communication of a notice of opposition and request to file observations
Aug 22, 2019
Notice of further oppositions to opponent(s)
Aug 5, 2019
Communication of a notice of opposition - first information to patent proprietor
Aug 5, 2019
Consolidated list of cited opposition documents
Jul 25, 2019
Citation in opposition procedure - 001
Jul 25, 2019
Citation in opposition procedure - 002
Jul 25, 2019
Citation in opposition procedure - 003
Jul 25, 2019
Citation in opposition procedure - 004
Jul 25, 2019
Citation in opposition procedure - 005
Jul 25, 2019
Citation in opposition procedure - 006
Jul 25, 2019
Citation in opposition procedure - 007
Jul 25, 2019
Citation in opposition procedure - 008
Jul 25, 2019
Citation in opposition procedure - 009
Jul 25, 2019
Citation in opposition procedure - 010
Jul 25, 2019
Citation in opposition procedure - 011
Jul 25, 2019
Citation in opposition procedure - 012
Jul 25, 2019
Citation in opposition procedure - 013
Jul 25, 2019
Citation in opposition procedure - 014
Jul 25, 2019
International publication (Pamphlet)
Jul 25, 2019
Notice of opposition
Jul 25, 2019
Notice of opposition
Nov 19, 2018
Transmission of the certificate for a European patent pursuant to Rule 74 EPC
Oct 11, 2018
Decision to grant a European patent
Sep 27, 2018
Bibliographic data of the European patent application
Sep 27, 2018
Information about intention to grant a patent
Sep 27, 2018
Intention to grant (signatures)
Sep 27, 2018
Text intended for grant (clean copy)
Sep 27, 2018
Text intended for grant (version for approval)
Sep 7, 2018
(Electronic) Receipt
Sep 7, 2018
Amended claims with annotations
Sep 7, 2018
Amended description with annotations
Sep 7, 2018
Claims
Sep 7, 2018
Description
Sep 7, 2018
English translation of the claims
Sep 7, 2018
French translation of claims
Sep 7, 2018
Letter accompanying subsequently filed items
Sep 7, 2018
Request for correction/amendment of the text proposed for grant sent from 01.04.2012
May 11, 2018
Bibliographic data of the European patent application
May 11, 2018
Communication about intention to grant a European patent
May 11, 2018
Intention to grant (signatures)
May 11, 2018
Text intended for grant (clean copy)
May 11, 2018
Text intended for grant (version for approval)
Jan 22, 2018
(Electronic) Receipt
Jan 22, 2018
Amended claims with annotations
Jan 22, 2018
Amended description with annotations
Jan 22, 2018
Claims
Jan 22, 2018
Description
Jan 22, 2018
Letter accompanying subsequently filed items
Jan 22, 2018
Reply to communication from the Examining Division
Dec 12, 2017
Annex to the communication
Dec 12, 2017
Consultation by telephone/in person (with time limit)
Dec 12, 2017
Result of consultation by telephone/in person
Sep 8, 2017
(Electronic) Receipt
Sep 8, 2017
Amended claims with annotations
Sep 8, 2017
Amended description with annotations
Sep 8, 2017
Claims
Sep 8, 2017
Description
Sep 8, 2017
Letter accompanying subsequently filed items
Sep 8, 2017
Reply to communication from the Examining Division
Aug 24, 2017
Annex to the communication
Aug 24, 2017
Communication from the Examining Division
Aug 14, 2017
Payment of fees and costs
Aug 11, 2017
Examination started
Aug 6, 2016
Payment of fees and costs
Aug 26, 2015
Notification on forthcoming publication of bibliographic data
Aug 5, 2015
Payment of fees and costs
Jun 23, 2015
Communication regarding comments on written opinion/amendment of application/payment of claims fee
Jun 19, 2015
Communication to designated inventor
Jun 16, 2015
Priority search results copy provided by EPO
Jun 1, 2015
Copy of the international preliminary report on patentability
Apr 20, 2015
Amended claims filed after receipt of (European) search report
Apr 20, 2015
Amended claims with annotations
Apr 20, 2015
Declaration of eligibility for a reduction of fees
Apr 20, 2015
Letter accompanying subsequently filed items
Apr 20, 2015
Payment of fees and costs
Apr 20, 2015
Request for entry into the European phase
Mar 27, 2015
Information on entry into European phase
Jun 12, 2014
Priority document (electronically transmitted)
May 22, 2014
Copy of the international search report
May 22, 2014
Copy of the international search report
May 22, 2014
Published international application - A1
Jan 31, 2014
Written opinion of the ISA, boxes No. I to VIII
Jan 31, 2014
Written opinion of the ISA, cover sheet
Jan 31, 2014
Written opinion of the ISA, supplemental box
Oct 30, 2013
Abstract
Oct 30, 2013
Claims
Oct 30, 2013
Description
Oct 30, 2013
Drawings

EP2920248

KALKFABRIK NETSTAL

Application Number: EP13783229A
Filing Date: Oct 18, 2013
Status: Granted And Under Opposition; Oct 5, 2018
Publication Date: Nov 7, 2018
External Links: Slate, Register , Google Patents

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Surface-Modified Calcium Oxide

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Dossier Documents

EP2920248