Blowout Preventer Seal Assembly And Method Of Using Same

Patent No. EP2726699 (titled "Blowout Preventer Seal Assembly And Method Of Using Same") was filed by National Oilwell Varco on Jun 6, 2012. The application was issued on Jul 15, 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
ENOVATE SYSTEMS	Apr 14, 2016	NAISMITH

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
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Feb 7, 2017
Communication to the parties concerning the termination of the opposition proceedings (opponent)
Feb 7, 2017
Communication to the parties concerning the termination of the opposition proceedings (proprietor)
Feb 2, 2017
Termination of the opposition proceedings with revocation of patent
Dec 1, 2016
Communication about missing advice of delivery
Nov 28, 2016
Advice of delivery
Nov 3, 2016
Advice of delivery
Nov 3, 2016
Advice of delivery
Oct 31, 2016
Advice of delivery
Oct 24, 2016
Acknowledgement of a document
Oct 24, 2016
Acknowledgement of a document
Oct 24, 2016
Decision revoking the European patent
Oct 24, 2016
Decision revoking the European patent
Oct 7, 2016
(Electronic) Receipt
Oct 7, 2016
Letter accompanying subsequently filed items
Oct 7, 2016
Request for revocation of patent
Aug 10, 2016
Brief communication - Opposition proceedings
Aug 10, 2016
Grant of extension of time limit (opposition procedure)
Aug 3, 2016
(Electronic) Receipt
Aug 3, 2016
Request for extension of time limit
May 23, 2016
Communication of a notice of opposition and request to file observations
May 23, 2016
Notice of further oppositions to opponent(s)
Apr 21, 2016
Communication of a notice of opposition - first information to patent proprietor
Apr 14, 2016
(Electronic) Receipt
Apr 14, 2016
Non-patent literature cited during the opposition procedure
Apr 14, 2016
Notice of opposition
Apr 14, 2016
Notice of opposition
Apr 14, 2016
Patent document cited during the opposition procedure
Apr 14, 2016
Patent document cited during the opposition procedure
Apr 14, 2016
Patent document cited during the opposition procedure
Apr 14, 2016
Patent document cited during the opposition procedure
Apr 14, 2016
Patent document cited during the opposition procedure
Apr 14, 2016
Patent document cited during the opposition procedure
Apr 14, 2016
Patent document cited during the opposition procedure
Apr 14, 2016
Patent document cited during the opposition procedure
Apr 14, 2016
Patent document cited during the opposition procedure
Jul 16, 2015
Transmission of the certificate for a European patent pursuant to Rule 74 EPC
Jun 18, 2015
Decision to grant a European patent
May 29, 2015
(Electronic) Receipt
May 29, 2015
Filing of the translations of the claims
May 29, 2015
French translation of claims
May 29, 2015
German translation of the claims
May 29, 2015
Letter accompanying subsequently filed items
Feb 3, 2015
Bibliographic data of the European patent application
Feb 3, 2015
Communication about intention to grant a European patent
Feb 3, 2015
Intention to grant (signatures)
Feb 3, 2015
Text intended for grant
Dec 10, 2014
(Electronic) Receipt
Dec 10, 2014
Annex
Dec 10, 2014
Letter accompanying subsequently filed items
Dec 10, 2014
Matter concerning the application
Nov 3, 2014
Invitation to indicate the basis for amendments
Apr 9, 2014
Notification on forthcoming publication of bibliographic data
Feb 26, 2014
Communication regarding comments on written opinion/amendment of application/payment of claims fee
Feb 11, 2014
Communication to designated inventor
Feb 11, 2014
Communication to designated inventor
Feb 11, 2014
Communication to designated inventor
Jan 21, 2014
Copy of the international preliminary report on patentability
Dec 3, 2013
(Electronic) Receipt
Dec 3, 2013
Amended claims filed after receipt of (European) search report
Dec 3, 2013
Amended claims with annotations
Dec 3, 2013
Amendments received before examination
Dec 3, 2013
Request for entry into the European phase
Nov 8, 2013
Information on entry into European phase
Sep 24, 2013
Reminder for payment period (examination fee/designation fees)
Sep 19, 2013
Copy of the international search report
Sep 19, 2013
International publication of the international search report
Jul 31, 2013
Written opinion of the ISA, boxes No. I to VIII
Jul 31, 2013
Written opinion of the ISA, cover sheet
Jul 31, 2013
Written opinion of the ISA, supplemental box
Jan 23, 2013
Priority document (electronically transmitted)
Jan 3, 2013
Published international application - A2

EP2726699

NATIONAL OILWELL VARCO

Application Number: EP12727727A
Filing Date: Jun 6, 2012
Status: Revoked
Publication Date: Jul 15, 2015
External Links: Slate, Register , Google Patents

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Blowout Preventer Seal Assembly And Method Of Using Same

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Dossier Documents

EP2726699