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Method For Preparation Of Hydroxyalkylalkylcellulose Ethers With High Yield

Patent No. EP1969012 (titled "Method For Preparation Of Hydroxyalkylalkylcellulose Ethers With High Yield") was filed by Samsung Fine Chemicals on Dec 30, 2005. The application was issued on Aug 13, 2014.

Patent Summary

Patent Family

Patent Oppositions (3)

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
AKZO NOBEL	May 11, 2015	ALFERINK
TYLOSE	Apr 28, 2015	PLATE
THE DOW CHEMICAL	Apr 23, 2015	GOLDENER

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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Dec 1, 2016
Communication to the parties concerning the termination of the opposition proceedings (opponent)
Dec 1, 2016
Communication to the parties concerning the termination of the opposition proceedings (opponent)
Dec 1, 2016
Communication to the parties concerning the termination of the opposition proceedings (opponent)
Dec 1, 2016
Communication to the parties concerning the termination of the opposition proceedings (proprietor)
Nov 28, 2016
Termination of the opposition proceedings with revocation of patent
Sep 12, 2016
Advice of delivery
Sep 1, 2016
Advice of delivery
Aug 30, 2016
Advice of delivery
Aug 25, 2016
Advice of delivery
Aug 25, 2016
Advice of delivery
Aug 22, 2016
Advice of delivery
Aug 19, 2016
Advice of delivery
Aug 18, 2016
Advice of delivery
Aug 18, 2016
Advice of delivery
Aug 17, 2016
Acknowledgement of a document
Aug 17, 2016
Acknowledgement of a document
Aug 17, 2016
Acknowledgement of a document
Aug 17, 2016
Acknowledgement of a document
Aug 17, 2016
Annex to the communication
Aug 17, 2016
Decision of the Opposition Division and instruction
Aug 17, 2016
Decision revoking the European patent
Aug 17, 2016
Grounds for the decision (Annex) - opposition
Aug 17, 2016
Internal form - Opposition/addressees
Aug 17, 2016
Notification concerning the date of oral proceedings
Aug 17, 2016
Notification concerning the date of oral proceedings
Aug 17, 2016
Notification concerning the date of oral proceedings
Aug 17, 2016
Notification concerning the date of oral proceedings
Aug 13, 2016
Request for interpreters during oral proceedings
Aug 9, 2016
Brief communication - Opposition proceedings
Aug 9, 2016
Brief communication - Opposition proceedings
Aug 9, 2016
Brief communication - Opposition proceedings
Aug 6, 2016
Written submission in preparation to/during oral proceedings
Aug 5, 2016
Brief communication - Opposition proceedings
Aug 5, 2016
Brief communication - Opposition proceedings
Aug 5, 2016
Brief communication - Opposition proceedings
Aug 4, 2016
Written submission in preparation to/during oral proceedings
Aug 3, 2016
Oral proceedings: reply to date proposed
Aug 2, 2016
Oral proceedings: reply to date proposed
Jul 18, 2016
Brief communication - Opposition proceedings
Jul 18, 2016
Brief communication - Opposition proceedings
Jul 18, 2016
Brief communication - Opposition proceedings
Jul 14, 2016
Written submission in preparation to/during oral proceedings
Jul 13, 2016
Written submission in preparation to/during oral proceedings
May 14, 2016
Advice of delivery
May 11, 2016
Advice of delivery
May 11, 2016
Advice of delivery
May 10, 2016
Advice of delivery
May 9, 2016
Advice of delivery
May 3, 2016
Advice of delivery
Apr 29, 2016
Annex to the communication - opposition
Apr 29, 2016
Preparation for oral proceedings
Apr 29, 2016
Summons to attend oral proceedings
Apr 29, 2016
Summons to attend oral proceedings
Apr 29, 2016
Summons to attend oral proceedings
Apr 29, 2016
Summons to attend oral proceedings
Dec 3, 2015
Brief communication - Opposition proceedings
Dec 3, 2015
Brief communication - Opposition proceedings
Dec 3, 2015
Brief communication - Opposition proceedings
Dec 3, 2015
Communication concerning statement of surrender/lapse of patent
Jun 18, 2015
Advice of delivery
Jun 17, 2015
Communication of a notice of opposition and request to file observations
Jun 17, 2015
Notice of further oppositions to opponent(s)
Jun 17, 2015
Notice of further oppositions to opponent(s)
Jun 17, 2015
Notice of further oppositions to opponent(s)
May 19, 2015
Communication of a notice of opposition - first information to patent proprietor
May 12, 2015
Notice of opposition
May 12, 2015
Patent document cited during the opposition procedure
May 12, 2015
Patent document cited during the opposition procedure
May 12, 2015
Patent document cited during the opposition procedure
May 12, 2015
Patent document cited during the opposition procedure
May 12, 2015
Patent document cited during the opposition procedure
May 12, 2015
Payment of fees and costs
May 11, 2015
Notice of opposition
May 11, 2015
Patent document cited during the opposition procedure
May 11, 2015
Patent document cited during the opposition procedure
May 11, 2015
Patent document cited during the opposition procedure
May 11, 2015
Patent document cited during the opposition procedure
May 11, 2015
Patent document cited during the opposition procedure
May 11, 2015
Payment of fees and costs
May 11, 2015
Payment of fees and costs
May 7, 2015
Brief communication - Opposition proceedings
May 6, 2015
Communication of a notice of opposition - first information to patent proprietor
May 6, 2015
Communication of a notice of opposition - first information to patent proprietor
Apr 29, 2015
Non-patent literature cited during the opposition procedure
Apr 29, 2015
Non-patent literature cited during the opposition procedure
Apr 29, 2015
Notice of opposition
Apr 29, 2015
Patent document cited during the opposition procedure
Apr 29, 2015
Patent document cited during the opposition procedure
Apr 29, 2015
Translation of the evidence during Opposition procedure
Apr 29, 2015
Translation of the evidence during Opposition procedure
Apr 28, 2015
Any annexes (other than citation) to an opposition letter
Apr 28, 2015
Non-patent literature cited during the opposition procedure
Apr 28, 2015
Non-patent literature cited during the opposition procedure
Apr 28, 2015
Notice of opposition
Apr 28, 2015
Patent document cited during the opposition procedure
Apr 28, 2015
Patent document cited during the opposition procedure
Apr 28, 2015
Patent document cited during the opposition procedure
Apr 28, 2015
Patent document cited during the opposition procedure
Apr 28, 2015
Payment of fees and costs
Apr 28, 2015
Payment of fees and costs
Apr 23, 2015
Any annexes (other than citation) to an opposition letter
Apr 23, 2015
Notice of opposition
Apr 23, 2015
Payment of fees and costs
Apr 23, 2015
Payment of fees and costs
Aug 13, 2014
Transmission of the certificate for a European patent pursuant to Rule 74 EPC
Jul 17, 2014
Decision to grant a European patent
Mar 21, 2014
Annex to the communication about intention to grant a European patent
Mar 21, 2014
Bibliographic data of the European patent application
Mar 21, 2014
Communication about intention to grant a European patent
Mar 21, 2014
Intention to grant (signatures)
Mar 21, 2014
Text intended for grant
Mar 10, 2014
Processing of request for correction of text proposed for grant or third party observations (from 01-04-2012)
Jan 30, 2014
Amended description with annotations
Jan 30, 2014
Description
Jan 30, 2014
Request for correction/amendment of the text proposed for grant sent from 01.04.2012
Jan 22, 2014
Request for change of applicant's representative
Jan 2, 2014
Submission concerning representation
Dec 6, 2013
Annex to the communication about intention to grant a European patent
Dec 6, 2013
Bibliographic data of the European patent application
Dec 6, 2013
Communication about intention to grant a European patent
Dec 6, 2013
Intention to grant (signatures)
Dec 6, 2013
Text intended for grant
Aug 9, 2012
Claims
Aug 9, 2012
Claims
Aug 9, 2012
Description
Aug 9, 2012
Description
Aug 9, 2012
Reply to communication from the Examining Division
Aug 8, 2012
Amended claims with annotations
Aug 8, 2012
Amended description with annotations
Aug 8, 2012
Claims
Aug 8, 2012
Description
Aug 8, 2012
Reply to communication from the Examining Division
Apr 3, 2012
Annex to the communication
Apr 3, 2012
Communication from the Examining Division
Jan 28, 2012
Reply to Written Opinion prepared by the EPO
Jan 27, 2012
Reply to Written Opinion prepared by the EPO
Sep 20, 2011
Communication of amended entries concerning the representative
Aug 3, 2011
Submission concerning representation
Jul 19, 2011
Invitation to declare maintenance of the application and to correct deficiencies in the Written Opinion/amend application
Jul 1, 2011
Communication regarding the transmission of the European search report
Jul 1, 2011
European search opinion
Jul 1, 2011
Supplementary European search report
May 23, 2011
Communication of amended entries concerning the representative
May 10, 2011
General authorisation
May 10, 2011
Matter concerning the application
Feb 25, 2011
Submission concerning representation
Oct 14, 2010
General authorisation
Oct 14, 2010
Matter concerning the application
Dec 18, 2008
Submission concerning representation
Nov 4, 2008
Letter concerning the inventor
Oct 7, 2008
General authorisation
Oct 7, 2008
Matter concerning the application
Sep 11, 2008
Invitation to indicate correct address of inventor
Sep 2, 2008
Letter which had not been notified
Aug 20, 2008
Notification on forthcoming publication of bibliographic data
Aug 7, 2008
Communication regarding possible amendment of claims/payment of claims fees
Jul 22, 2008
(Electronic) Receipt
Jul 22, 2008
Annex
Jul 22, 2008
Annex
Jul 22, 2008
Annex
Jul 22, 2008
Request for entry into the European phase
Jul 17, 2008
Copy of the international preliminary report on patentability
May 15, 2008
Information on entry into European phase
Jul 12, 2007
Copy of the international search report
Jul 12, 2007
Published international application - A1

EP1969012

SAMSUNG FINE CHEMICALS

Application Number: EP05844817A
Filing Date: Dec 30, 2005
Status: Revoked
Publication Date: Aug 13, 2014
External Links: Slate, Register , Google Patents