Airfoil Diffuser For A Centrifugal Compressor

Patent No. EP2198167 (titled "Airfoil Diffuser For A Centrifugal Compressor") was filed by Praxair Technology on Aug 25, 2008. The application was issued on Apr 20, 2022.

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
SIEMENS	Jan 12, 2018	PATERIS PATENTANWALTE PARTMBB

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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May 3, 2022
Termination of the opposition proceedings with maintenance of patent
Mar 24, 2022
Decision to maintain the European patent in amended form
Mar 24, 2022
Decision to maintain the European patent in amended form
Mar 14, 2022
(Electronic) Receipt
Mar 14, 2022
French translation of claims
Mar 14, 2022
German translation of the claims
Mar 14, 2022
Letter accompanying subsequently filed items
Feb 11, 2022
Communication of bibliographic data
Feb 11, 2022
Communication to opponent concerning maintenance
Feb 11, 2022
Communication with request to file translations
Feb 3, 2022
Maintenance of the patent with the documents specified in the final decision
Oct 21, 2021
Advice of delivery
Oct 18, 2021
Advice of delivery
Oct 18, 2021
Annex to the communication - opposition
Oct 18, 2021
Decision of the Opposition Division and instruction
Oct 18, 2021
Druckexemplar in opposition procedure
Oct 18, 2021
Grounds for the decision (Annex) - opposition
Oct 18, 2021
Interlocutory decision in opposition proceedings
Oct 18, 2021
Interlocutory decision in opposition proceedings
Oct 18, 2021
Means of redress
Oct 18, 2021
Minutes of the oral proceedings (Opposition Division) - conclusion of the proceedings
Oct 18, 2021
Minutes of the oral proceedings (Opposition Division) - introduction of the parties
Oct 18, 2021
Provision of a copy of the minutes - opposition procedure
Oct 18, 2021
Provision of a copy of the minutes - opposition procedure
Oct 18, 2021
Scanned annex to a communication - opposition procedure
Oct 18, 2021
Scanned annex to a communication - opposition procedure
Oct 18, 2021
Transmittal of decision / summons - opposition
Oct 18, 2021
Transmittal of decision / summons - opposition
Jun 8, 2021
Information about the result of oral proceedings
May 10, 2021
Brief communication - Opposition proceedings
May 3, 2021
(Electronic) Receipt
May 3, 2021
Letter accompanying subsequently filed items
May 3, 2021
Written submission in preparation to/during oral proceedings
Apr 13, 2021
Brief communication - Opposition proceedings
Apr 13, 2021
Brief communication - Opposition proceedings
Apr 9, 2021
Communication of amended entries
Apr 1, 2021
(Electronic) Receipt
Apr 1, 2021
Citation in opposition procedure - 010
Apr 1, 2021
Letter accompanying subsequently filed items
Apr 1, 2021
Written submission in preparation to/during oral proceedings
Mar 31, 2021
Authorisation
Mar 31, 2021
Request for change of opponent's representative
Jan 12, 2021
Notification concerning the date of oral proceedings
Jan 12, 2021
Notification concerning the date of oral proceedings
Dec 23, 2020
Brief communication - Opposition proceedings
Dec 18, 2020
(Electronic) Receipt
Dec 18, 2020
(Electronic) Receipt
Dec 18, 2020
Letter accompanying subsequently filed items
Dec 18, 2020
Letter accompanying subsequently filed items
Dec 18, 2020
Request for interpreters during oral proceedings
Dec 18, 2020
Written submission in preparation to/during oral proceedings
Oct 12, 2020
Advice of delivery
Oct 6, 2020
Advice of delivery
Oct 1, 2020
Acknowledgement of a document
Oct 1, 2020
Acknowledgement of a document
Oct 1, 2020
Annex to the communication - opposition
Oct 1, 2020
Information concerning oral proceedings
Oct 1, 2020
Summons to attend oral proceedings
Oct 1, 2020
Summons to attend oral proceedings
Jun 3, 2020
Confirmation of revocation of automatic debit order
May 28, 2020
Letter relating to the automatic debiting procedure
Jun 24, 2019
Communication of the registration of a transfer or change of name and/or address
Jun 18, 2019
Submission concerning change of applicant's address
Jun 21, 2018
Brief communication - Opposition proceedings
Jun 15, 2018
Brief communication - Opposition proceedings
Jun 15, 2018
Brief communication - Opposition proceedings
Jun 15, 2018
Grant of extension of time limit (opposition procedure)
Jun 12, 2018
(Electronic) Receipt
Jun 12, 2018
Auxiliary request during Opposition procedure
Jun 12, 2018
Auxiliary request during Opposition procedure
Jun 12, 2018
Auxiliary request during Opposition procedure
Jun 12, 2018
Auxiliary request during Opposition procedure
Jun 12, 2018
Auxiliary request during Opposition procedure
Jun 12, 2018
Auxiliary request during Opposition procedure - 01
Jun 12, 2018
Auxiliary request during Opposition procedure - 02
Jun 12, 2018
Auxiliary request during Opposition procedure - 03
Jun 12, 2018
Auxiliary request during Opposition procedure - 04
Jun 12, 2018
Auxiliary request during Opposition procedure - 05
Jun 12, 2018
Letter accompanying subsequently filed items
Jun 12, 2018
Reply of the patent proprietor to the notice(s) of opposition
Jun 11, 2018
Request for extension of time limit
Jan 31, 2018
Communication of a notice of opposition and request to file observations
Jan 31, 2018
Notice of further oppositions to opponent(s)
Jan 23, 2018
Communication of a notice of opposition - first information to patent proprietor
Jan 12, 2018
(Electronic) Receipt
Jan 12, 2018
Citation in opposition procedure - 001
Jan 12, 2018
Citation in opposition procedure - 002
Jan 12, 2018
Citation in opposition procedure - 003
Jan 12, 2018
Citation in opposition procedure - 004
Jan 12, 2018
Citation in opposition procedure - 005
Jan 12, 2018
Citation in opposition procedure - 006
Jan 12, 2018
Citation in opposition procedure - 007
Jan 12, 2018
Citation in opposition procedure - 008
Jan 12, 2018
Citation in opposition procedure - 009
Jan 12, 2018
Notice of opposition
Jan 12, 2018
Notice of opposition
Apr 12, 2017
Transmission of the certificate for a European patent pursuant to Rule 74 EPC
Mar 16, 2017
Decision to grant a European patent
Mar 6, 2017
(Electronic) Receipt
Mar 6, 2017
French translation of claims
Mar 6, 2017
German translation of the claims
Mar 6, 2017
Letter accompanying subsequently filed items
Oct 27, 2016
Bibliographic data of the European patent application
Oct 27, 2016
Communication about intention to grant a European patent
Oct 27, 2016
Intention to grant (signatures)
Oct 27, 2016
Text intended for grant (clean copy)
Oct 27, 2016
Text intended for grant (version for approval)
Oct 10, 2016
Examination started
Nov 12, 2015
Response to enquiry for communication from the Examining Division
Nov 9, 2015
Enquiry as to when a communication from the Examining Division can be expected
Nov 9, 2015
Miscellaneous requests concerning client data
May 13, 2014
Submission concerning representation
Mar 28, 2014
CDS Clean up - amended data concerning the representative of the applicant (Association)
Apr 18, 2012
Letter relating to the automatic debiting procedure
Sep 21, 2011
Letter concerning the inventor
Sep 19, 2011
Letter concerning the inventor
Jun 30, 2011
Deficiencies in request for rectification in designation of inventor
Jun 17, 2011
Letter concerning the inventor
May 27, 2010
Notification on forthcoming publication of bibliographic data
May 4, 2010
Communication regarding comments on Written Opinion/amendment of application/payment of claims fee
Apr 13, 2010
Copy of the international preliminary report on patentability
Mar 26, 2010
(Electronic) Receipt
Mar 26, 2010
Request for entry into the European phase
Feb 5, 2010
Information on entry into European phase
Apr 23, 2009
Priority document (electronically transmitted)
Apr 2, 2009
Copy of the international search report
Apr 2, 2009
Published international application - A1
Dec 30, 2008
Written opinion of the ISA, boxes No. I to VIII
Dec 30, 2008
Written opinion of the ISA, cover sheet
Dec 30, 2008
Written opinion of the ISA, supplemental box
Sep 4, 2008
Abstract
Sep 4, 2008
Claims
Sep 4, 2008
Description
Sep 4, 2008
Drawings

EP2198167

PRAXAIR TECHNOLOGY

Application Number: EP08798620A
Filing Date: Aug 25, 2008
Status: Patent Maintained As Amended; Mar 18, 2022
Publication Date: Apr 20, 2022
External Links: Slate, EP2198167B2, Google Patents

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Airfoil Diffuser For A Centrifugal Compressor

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Dossier Documents

EP2198167