Hard Water Foaming Agents And Methods For Gypsum Board Production

Patent No. EP2225326 (titled "Hard Water Foaming Agents And Methods For Gypsum Board Production") was filed by United States Gypsum on Dec 11, 2008. The application was issued on Feb 18, 2015.

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
KNAUF GIPS KG	Nov 16, 2015	ZECH

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 28, 2018
Communication to the parties concerning the termination of the opposition proceedings (opponent)
Feb 28, 2018
Communication to the parties concerning the termination of the opposition proceedings (proprietor)
Feb 23, 2018
Termination of the opposition proceedings with revocation of patent
Dec 1, 2017
Advice of delivery
Dec 1, 2017
Advice of delivery
Nov 21, 2017
Advice of delivery
Nov 21, 2017
Advice of delivery
Nov 17, 2017
Advice of delivery
Nov 13, 2017
Acknowledgement of a document
Nov 13, 2017
Acknowledgement of a document
Nov 13, 2017
Decision of the Opposition Division and instruction
Nov 13, 2017
Decision revoking the European patent
Nov 13, 2017
Grounds for the decision (Annex) - opposition
Nov 13, 2017
Internal form - Opposition/addressees
Nov 13, 2017
Scanned annex to a communication - opposition procedure
Nov 13, 2017
Scanned annex to a communication - opposition procedure
Nov 13, 2017
Scanned annex to a communication - opposition procedure
Nov 10, 2017
Annex to the communication - opposition
Nov 10, 2017
Internal form - Opposition/addressees
Nov 10, 2017
Minutes of the oral proceedings (Opposition Division) - conclusion of the proceedings
Nov 10, 2017
Minutes of the oral proceedings (Opposition Division) - conclusion of the proceedings
Nov 10, 2017
Minutes of the oral proceedings (Opposition Division) - introduction of the parties
Nov 10, 2017
Provision of a copy of the minutes - opposition procedure
Nov 10, 2017
Scanned annex to a communication - opposition procedure
Nov 10, 2017
Scanned annex to a communication - opposition procedure
Nov 10, 2017
Scanned annex to a communication - opposition procedure
Oct 24, 2017
Information about the result of oral proceedings
Oct 19, 2017
Brief communication - Opposition proceedings
Oct 13, 2017
(Electronic) Receipt
Oct 13, 2017
Letter accompanying subsequently filed items
Oct 13, 2017
Letter regarding the opposition procedure (no time limit)
Aug 31, 2017
Brief communication - Opposition proceedings
Aug 25, 2017
Brief communication - Opposition proceedings
Aug 25, 2017
Brief communication - Opposition proceedings
Aug 23, 2017
(Electronic) Receipt
Aug 23, 2017
Amended claims with annotations
Aug 23, 2017
Amended claims with annotations
Aug 23, 2017
Amended claims with annotations
Aug 23, 2017
Amended claims with annotations
Aug 23, 2017
Claims
Aug 23, 2017
Claims
Aug 23, 2017
Claims
Aug 23, 2017
Claims
Aug 23, 2017
Letter accompanying subsequently filed items
Aug 23, 2017
Letter regarding the opposition procedure (no time limit)
Aug 23, 2017
Request for interpreters during oral proceedings
Aug 22, 2017
Request for interpreters during oral proceedings
Aug 22, 2017
Request for interpreters during oral proceedings
Aug 17, 2017
(Electronic) Receipt
Aug 17, 2017
Request for interpreters during oral proceedings
Jan 31, 2017
Advice of delivery
Jan 31, 2017
Advice of delivery
Jan 26, 2017
Advice of delivery
Jan 23, 2017
Advice of delivery
Jan 18, 2017
Acknowledgement of a document
Jan 18, 2017
Acknowledgement of a document
Jan 18, 2017
Annex to the communication - opposition
Jan 18, 2017
Information concerning oral proceedings
Jan 18, 2017
Preparation for oral proceedings
Jan 18, 2017
Summons to attend oral proceedings
Jan 18, 2017
Summons to attend oral proceedings
Jan 11, 2017
Information about the result of oral proceedings
Oct 21, 2016
Brief communication - Opposition proceedings
Oct 13, 2016
(Electronic) Receipt
Oct 13, 2016
Letter accompanying subsequently filed items
Oct 13, 2016
Letter regarding the opposition procedure (no time limit)
Oct 13, 2016
Non-patent literature cited during the opposition procedure
Oct 13, 2016
Non-patent literature cited during the opposition procedure
Aug 26, 2016
Brief communication - Opposition proceedings
Aug 17, 2016
(Electronic) Receipt
Aug 17, 2016
Letter accompanying subsequently filed items
Aug 17, 2016
Letter regarding the opposition procedure (no time limit)
Jul 7, 2016
Submission concerning representation
Jun 27, 2016
Brief communication - Opposition proceedings
Jun 27, 2016
Communication of amended entries
Jun 10, 2016
Request concerning representative opponent
May 17, 2016
Brief communication - Opposition proceedings
May 10, 2016
(Electronic) Receipt
May 10, 2016
Letter accompanying subsequently filed items
May 10, 2016
Reply of the patent proprietor to the notice(s) of opposition
Jan 12, 2016
Communication of a notice of opposition and request to file observations
Jan 12, 2016
Notice of further oppositions to opponent(s)
Nov 27, 2015
Communication of a notice of opposition - first information to patent proprietor
Nov 16, 2015
Non-patent literature cited during the opposition procedure
Nov 16, 2015
Non-patent literature cited during the opposition procedure
Nov 16, 2015
Notice of opposition
Nov 16, 2015
Patent document cited during the opposition procedure
Nov 16, 2015
Patent document cited during the opposition procedure
Nov 16, 2015
Patent document cited during the opposition procedure
Nov 16, 2015
Patent document cited during the opposition procedure
Nov 16, 2015
Patent document cited during the opposition procedure
Nov 16, 2015
Patent document cited during the opposition procedure
Nov 16, 2015
Patent document cited during the opposition procedure
Nov 16, 2015
Patent document cited during the opposition procedure
Nov 16, 2015
Payment of fees and costs
Feb 18, 2015
Transmission of the certificate for a European patent pursuant to Rule 74 EPC
Jan 22, 2015
Decision to grant a European patent
Dec 18, 2014
Filing of the translations of the claims
Dec 18, 2014
French translation of claims
Dec 18, 2014
German translation of the claims
Dec 15, 2014
Filing of the translations of the claims
Dec 15, 2014
French translation of claims
Dec 15, 2014
German translation of the claims
Oct 2, 2014
Communication of amended entries concerning the representative
Sep 29, 2014
Submission concerning change of applicant's representative
Aug 21, 2014
Bibliographic data of the European patent application
Aug 21, 2014
Communication about intention to grant a European patent
Aug 21, 2014
Intention to grant (signatures)
Aug 21, 2014
Text intended for grant (clean copy)
Aug 21, 2014
Text intended for grant (version for approval)
Mar 15, 2014
Amended claims with annotations
Mar 15, 2014
Claims
Mar 15, 2014
Reply to communication from the Examining Division
Mar 13, 2014
Amended claims with annotations
Mar 13, 2014
Claims
Mar 13, 2014
Reply to communication from the Examining Division
Nov 13, 2013
Annex to the communication
Nov 13, 2013
Communication from the Examining Division
Oct 31, 2013
Examination started
May 15, 2013
Amended claims filed after receipt of (European) search report
May 15, 2013
Amended claims with annotations
May 15, 2013
Amendments received before examination
May 10, 2013
Amended claims filed after receipt of (European) search report
May 10, 2013
Amended claims with annotations
May 10, 2013
Amendments received before examination
Nov 6, 2012
Invitation to declare maintenance of the application and to correct deficiencies in the Written Opinion/amend application
Oct 19, 2012
Communication regarding the transmission of the European search report
Oct 19, 2012
European search opinion
Oct 19, 2012
Supplementary European search report
Oct 4, 2011
Communication confirming withdrawal from representation
Oct 4, 2011
Communication of amended entries concerning the representative
Aug 27, 2011
Submission concerning change of applicant's representative
Aug 25, 2011
Submission concerning change of applicant's representative
Aug 25, 2011
Submission concerning change of applicant's representative
Dec 16, 2010
Letter concerning the inventor
Sep 7, 2010
Invitation to indicate correct address of inventor
Aug 31, 2010
Letter which had not been notified
Aug 11, 2010
Notification on forthcoming publication of bibliographic data
Aug 9, 2010
Communication regarding possible amendment of the application/payment of claims fee
Jul 13, 2010
Copy of the international preliminary report on patentability
Jun 24, 2010
Request for entry into the European phase
May 18, 2010
Information on entry into European phase
Aug 3, 2009
Priority document (electronically transmitted)
Jul 9, 2009
Copy of the international search report
Jul 9, 2009
Published international application - A1

EP2225326

UNITED STATES GYPSUM

Application Number: EP08868770A
Filing Date: Dec 11, 2008
Status: Revoked; Mar 2, 2018
Publication Date: Feb 18, 2015
External Links: Slate, Register , Google Patents

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Hard Water Foaming Agents And Methods For Gypsum Board Production

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Dossier Documents

EP2225326