Liberty Energy Inc. et al. vs. U.S. Well Services, LLC et al.

Explore the PTAB proceeding IPR2025-00661 filed by Liberty Energy Inc. et al. on 2025-03-05. This includes filing dates, application numbers, tech centers, patent numbers, and current case status.

Proceeding Overview

Proceeding Number

IPR2025-00661

Filing Date

2025-03-05

Accorded Filing Date

2025-03-05

Institution Decision Date

—

Last Modified Date

2025-09-29

Proceeding Type

IPR

Termination Date

2025-07-17

Trial Status

Terminated-Settled

Parties & Counsel

Petitioner

Liberty Energy Inc. et al.

Represented By

Walters, Chadet al

Patent Owner / Respondent

U.S. Well Services, LLC et al.

Represented By

Ferguson, Brianet al

Tribunal & Venue

Tribunal

Patent Trial and Appeal Board (USPTO)

Technology Center

TC 3600 - Transportation, E-Commerce & Construction

Patent Information

1 Patent Involved

Respondent Application Number 17060647

Respondent Patent Number 11459863

External Links

Espacenet

Google Patents

Respondent Inventor Lon Robinson et al

Respondent Tech Center TC 3600 - Transportation, E-Commerce & Construction

Address and Attorney/Agent Information

13 Registered Practitioners

Power of Attorney & Correspondence

Firm / Entity Name Hogan Lovells Cadwalader US LLP

Customer Number 132858

Address 609 Main Street, Suite 4200, Houston, TX, 77002, UNITED STATES

Attorney / Agent Information

Reg #	Name	Phone
40357	Celine Crowson	202-637-5600
46089	Melissa Schwaller	713-632-1449
48163	Jason Lohr	415-374-2300
57025	Kristin Connarn	617-535-4000
60506	Taylor Evans	713-632-1400
65250	Helen Trac	248-495-0021
66218	Joseph Raffetto	+1 970 778 4063
68385	Scott Hughes	202-637-3659
70017	Corey Leggett	303-899-7300
70816	Sanjiva Reddy	212-918-3209
71636	Polly Sims	713-632-1400
72224	Joe Grdinovac	713-632-1400
78533	Connor Day	713-632-1418

Proceeding Documents

Notice: refund approved NOTICE

2025-09-29 FILING PARTY: BOARD

Download

Petitioners' Request for Refund of Post-Institution Fees OTHER

2025-09-26 FILING PARTY: PETITIONER

Download

DECISION Termination Prior to Institution of Trial 37 C.F.R. § 42.74 TERMINATE

2025-07-17 FILING PARTY: BOARD

Download

PATENT OWNER’S PRELIMINARY RESPONSE '863 POPR

2025-07-16 FILING PARTY: PATENT OWNER

Download

Unopposed Motion to Terminate Proceeding MOTION

2025-07-15 FILING PARTY: PETITIONER

Download

Liberty Energy Inc. et al. vs. U.S. Well Services, LLC et al.

Proceeding Overview

Parties & Counsel

Petitioner

Liberty Energy Inc. et al.

Represented By

Patent Owner / Respondent

U.S. Well Services, LLC et al.

Represented By

Tribunal & Venue

Patent Information

Address and Attorney/Agent Information

Power of Attorney & Correspondence

Attorney / Agent Information

Proceeding Documents

Notice: refund approved NOTICE

Petitioners' Request for Refund of Post-Institution Fees OTHER

DECISION Termination Prior to Institution of Trial 37 C.F.R. § 42.74 TERMINATE

PATENT OWNER’S PRELIMINARY RESPONSE '863 POPR

Unopposed Motion to Terminate Proceeding MOTION

EX-2002 - Covenant Not to Sue - 863 Patent Exhibit

Patent Owner's Discretionary Denial Brief RESPONSE

Patent Owner's Updated Mandatory Notices NOTICE

Patent Owner's Updated Power of Attorney NOTICE

Patent Owner's Unopposed Motion for Pro Hac Vice Admission of Richard Quarles MOTION

EX-2001 - Declaration of Richard Quarles ISO Motion for PHV Exhibit

Notice: Notice filing date accorded NOTICE

PATENT OWNER’S POWER OF ATTORNEY NOTICE

PATENT OWNER’S MANDATORY NOTICES NOTICE

1036 - Marks Handbook Exhibit

1014 - Part 1-Nesbitt-2006-Handbook of pumps and pumping Exhibit

1015 - Hall-Ellis Declaration Exhibit

1030 - Golden Liquid Cooling Power Thyristors Exhibit

1006 - SDTX-4-24-cv-00839-32 Plaintiffs’ Amended Complaint Exhibit

1027 - US2533001 Eberhard Exhibit

1023 PART 1 - Fink Exhibit

1007 - 863 Patent Claim Listing Exhibit

1019 - Camara-EE Reference Exhibit

1001 - US11459863 Exhibit

1023 PART 3 - Fink Exhibit

1028 - NEMA ICS-61800-4 Exhibit

1009 - 62805521 Fischer Provisional Exhibit

1004 - SDTX-4-24-cv-00839-1 Plaintiffs’ Original Complaint Exhibit

Petitioners' Power of Attorney (863 patent) NOTICE

1014 - Part 4-Nesbitt-2006-Handbook of pumps and pumping Exhibit

1011 - WO 2018201118 Orban Exhibit

1031 - Iverson and Whitaker A Uniform Temperature, Ultra High Heat Flux Liq Exhibit

1008 - US10988998 Fischer Exhibit

1013 - Part 2 of 2 Karassik Pump Handbook Exhibit

1026 - Broussard Exhibit

1012 - US20170030177A1 Oehring Exhibit

1014 - Part 3-Nesbitt-2006-Handbook of pumps and pumping Exhibit

1029 - Chang An NPN High Power Fast Germanium Core Driver Transistor Exhibit

1018 - US_2789714_A Norris Exhibit

1023 PART 2 - Fink Exhibit

1025 - Coli 20120255734 Exhibit

1022 - US1743771 Hall Exhibit

1016 - US_9893500_B2 Oehring Exhibit

1005 - Return of Service Exhibit

1003 - Declaration of Dr. Robert Durham Exhibit

1032 - Hefner A Dynamic Electro-Thermal Model for the IGBT. Exhibit

1014 - Part 2-Nesbitt-2006-Handbook of pumps and pumping Exhibit

1021 - IEEE Standards Dictionary Exhibit

1002 - 11459863 File History Exhibit

1035 - MW Quintuple 2.2.2017 Exhibit

1010 - US20200040878A1 Morris Exhibit

1024 - Horikoshi - US20110241590A1 Exhibit

1033 - Morton-Unlocking the Earth_ A short history Exhibit

1020 - Roe Exhibit

1013 - Part 1 of 2 Karassik Pump Handbook Exhibit

1017 - Weir Oil & Gas introduces new continuous duty 5000-horsepower pump Exhibit

Petition for Inter Partes Review of U.S. Patent 11,459,863 PETITION

1034 - GD2500Q Op & Service Manual Exhibit