Topsoe, Inc. et al. vs. L'AIR LIQUIDE, SOCIÉTÉ ANONYME POUR L'ETUDE ET L'EXPLOITATION DES PROCÉDÉS GEORGES CLAUDE

Explore the PTAB proceeding IPR2025-01174 filed by Topsoe, Inc. et al. on 2025-07-02. This includes filing dates, application numbers, tech centers, patent numbers, and current case status.

Proceeding Overview

Proceeding Number

IPR2025-01174

Filing Date

2025-07-02

Accorded Filing Date

2025-07-02

Institution Decision Date

2025-11-20

Last Modified Date

2025-12-23

Proceeding Type

IPR

Termination Date

2025-11-20

Trial Status

Discretionary Denial

Parties & Counsel

Petitioner

Topsoe, Inc. et al.

Represented By

Feigelson, Aaronet al

Patent Owner / Respondent

L'AIR LIQUIDE, SOCIÉTÉ ANONYME POUR L'ETUDE ET L'EXPLOITATION DES PROCÉDÉS GEORGES CLAUDE

Represented By

Robinson, Eagleet al

Tribunal & Venue

Tribunal

Patent Trial and Appeal Board (USPTO)

Technology Center

TC 1700 - Chemical & Materials Engineering

Patent Information

1 Patent Involved

Respondent Application Number 17399277

Respondent Patent Number 11673805

External Links

Espacenet

Google Patents

Respondent Inventor Sophia SCHMIDT et al

Respondent Tech Center TC 1700 - Chemical & Materials Engineering

Address and Attorney/Agent Information

5 Registered Practitioners

Power of Attorney & Correspondence

Firm / Entity Name American Air Liquide - Intellectual Property Department

Customer Number —

Address 9811 Katy Freeway, Suite 100, Houston, TX, 77024, UNITED STATES

Attorney / Agent Information

Reg #	Name	Phone
55254	Elwood Haynes	713-624-8954
55727	Allen White	713-624-8787
57995	Justin Murray	713-624-8833
63080	Jiyun Xu	--
65687	Yan Jiang	610-640-9350

Proceeding Documents

Notice: refund approved NOTICE

2025-11-25 FILING PARTY: BOARD

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Petitioner's Request for Refund of Post-Institution Fees OTHER

2025-11-21 FILING PARTY: PETITIONER

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Director Discretionary Decision: Deny RESPONSE

2025-11-20 FILING PARTY: BOARD

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Updated Power of Attorney NOTICE

2025-10-09 FILING PARTY: PETITIONER

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Petitioner's Response to Patent Owner's Request for Discretionary Denial RESPONSE

2025-10-09 FILING PARTY: PETITIONER

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Topsoe, Inc. et al. vs. L'AIR LIQUIDE, SOCIÉTÉ ANONYME POUR L'ETUDE ET L'EXPLOITATION DES PROCÉDÉS GEORGES CLAUDE

Proceeding Overview

Parties & Counsel

Petitioner

Topsoe, Inc. et al.

Represented By

Patent Owner / Respondent

L'AIR LIQUIDE, SOCIÉTÉ ANONYME POUR L'ETUDE ET L'EXPLOITATION DES PROCÉDÉS GEORGES CLAUDE

Represented By

Tribunal & Venue

Patent Information

Address and Attorney/Agent Information

Power of Attorney & Correspondence

Attorney / Agent Information

Proceeding Documents

Notice: refund approved NOTICE

Petitioner's Request for Refund of Post-Institution Fees OTHER

Director Discretionary Decision: Deny RESPONSE

Updated Power of Attorney NOTICE

Petitioner's Response to Patent Owner's Request for Discretionary Denial RESPONSE

Patent Owner Preliminary Response POPR

Updated Mandatory Notice NOTICE

Notice: Power of Attorney NOTICE

Notice: Mandatory Notice NOTICE

Patent Owner's Request for Discretionary Denial RESPONSE

Notice: Power of Attorney NOTICE

Notice: Mandatory Notice NOTICE

Notice filing date accorded to petition NOTICE

Martin et al., (2019) “Progress Update on the Allam Cycle..." Exhibit

U.S. Patent Publication No. 2009/0298957 to Gauthier et al. Exhibit

Declaration of Michael Magoulias Exhibit

Petitioner's Explanation and Ranking of Multiple Petitions OTHER

Technology Handbook (Air Liquide, Engineering and Construction. Ed.)... Exhibit

Riquarts et al. (1985) "Gas separation using pressure swing absorption..." Exhibit

Notice: Power of Attorney NOTICE

Keshavarz et al. (2019) "Cryogenic CO2 Capture,” in Sustainable Agri..." Exhibit

File History of U.S. Patent No. 11,673,805 Exhibit

Appl, M. (1997) "Ammonia Methanol Hydrogen Carbon Monoxide..." Exhibit

U.S. Patent Publication No. 2012/0291484 to Terrien et al. Exhibit

K. Aasberg-Petersen et al. (2004) “Synthesis gas production for FT syn..." Exhibit

Xu et al. (2014) "An Improved CO2 Separation and Purification System..." Exhibit

Patwardhan et al. (2013) "Optimised hydrogen production by steam..." Exhibit

Declaration of June Munford Exhibit

J. R. Rostrup-Nielsen (1993) "Production of Synthesis Gas" Exhibit

Petition: as filed PETITION

CV of Prof. Dr.-Ing. Harald Klein Exhibit

Cotton, B. (2019) "Clean Hydrogen. Part 1: Hydrogen from Natural Gas..." Exhibit

SSRN Listing for Martin, Progress Update on the Allam Cycle Exhibit

U.S. Patent Publication No. 2019/135626 to Rafati et al. Exhibit

J. R. Rostrup-Nielsen (2002) "Syngas in perspective" Exhibit

Declaration of Prof. Dr. Harald Klein Exhibit

U.S. Patent No. 11,673,805 Exhibit

Aasberg-Petersen et al. (2011) “Natural gas to synthesis gas..." Exhibit