Liberty Energy Services LLC et al. vs. U.S. WELL SERVICES, LLC et al.

Explore the PTAB proceeding IPR2025-01424 filed by Liberty Energy Services LLC et al. on 2025-08-27. This includes filing dates, application numbers, tech centers, patent numbers, and current case status.

Proceeding Overview

Proceeding Number

IPR2025-01424

Filing Date

2025-08-27

Accorded Filing Date

2025-08-27

Institution Decision Date

2026-01-09

Last Modified Date

2026-02-10

Proceeding Type

IPR

Termination Date

2026-01-09

Trial Status

Discretionary Denial

Parties & Counsel

Petitioner

Liberty Energy Services LLC 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 2100 - Computer Architecture & Software

Patent Information

1 Patent Involved

Respondent Application Number 16443273

Respondent Patent Number 11211801

External Links

Espacenet

Google Patents

Respondent Inventor Brandon N. Hinderliter et al

Respondent Tech Center TC 2100 - Computer Architecture & Software

Address and Attorney/Agent Information

15 Registered Practitioners

Power of Attorney & Correspondence

Firm / Entity Name Abel Schillinger, LLP

Customer Number 13897

Address PO Box 80010, Austin, TX, 78708, UNITED STATES

Attorney / Agent Information

Reg #	Name	Phone
35284	George Meyer	512-900-8500
36079	Jeffrey Abel	512-900-8500
44532	Bernadette Bennett	512-900-8500
46767	Angel Herrera Jr	512-900-8500
50417	Heribert Muensterer	512-900-8507
57634	Katrin Venter	571-214-8271
58342	Ethan Schillinger	512-900-8500
63835	Taffie Jones	336-741-2932
66027	David Pittman	312-580-9696
66575	Brett Hamilton	512-900-8520
68730	Lei Guo	512-900-8500
69778	Max Kolar	512-900-8500
75702	Jaclyn Torres	512-900-8535
76319	Alex Jacobs	847-797-1354
82214	Maria Amon	512-900-8518

Proceeding Documents

Director Discretionary Decision: Deny RESPONSE

2026-01-09 FILING PARTY: BOARD

Download

1025

EX1025 - U.S. Patent No. 11,031,677 Exhibit

2025-12-10 FILING PARTY: PETITIONER

Download

Patent Owner’s Preliminary Response '801 POPR

2025-12-10 FILING PARTY: PATENT OWNER

Download

1026

EX1026 - U.S. Patent No. 10,964,927 Exhibit

2025-12-10 FILING PARTY: PETITIONER

Download

1032

EX1032 - Patent Owner Original Complaint - SDTX-4-24-cv-00839 Exhibit

2025-12-10 FILING PARTY: PETITIONER

Download

Liberty Energy Services LLC et al. vs. U.S. WELL SERVICES, LLC et al.

Proceeding Overview

Parties & Counsel

Petitioner

Liberty Energy Services LLC 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

Director Discretionary Decision: Deny RESPONSE

EX1025 - U.S. Patent No. 11,031,677 Exhibit

Patent Owner’s Preliminary Response '801 POPR

EX1026 - U.S. Patent No. 10,964,927 Exhibit

EX1032 - Patent Owner Original Complaint - SDTX-4-24-cv-00839 Exhibit

EX1029 - About IEEE Exhibit

Ex. 2012 - IEEE Xplore: 141-1993 – IEEE Recommended Practice for Electric Power Distribution for Industrial Plants Exhibit

Ex. 2010 - U.S. Pat. Pub. No. 2019/0211661, Udo Reckels et al., Exhibit

EX1033 - Patent Owner First Amended Complaint - SDTX-4-24-cv-00839 Exhibit

Ex. 2011 - Improving Safety and Productivity in Oil and Gas Operations Exhibit

EX1030 - IEEE Standards Exhibit

EX1031 - Patent Owner Complaint - EDTX-2-25-cv-00522 Exhibit

Petitioners' Opposition to Patent Owner's Discretionary Denial Brief RESPONSE

EX1035 - Patent Owner Third Amended Complaint - SDTX-4-24-cv-00839 Exhibit

EX1034 - Patent Owner Second Amended Complaint - SDTX-4-24-cv-00839 Exhibit

EX1028 - Analysis of the $69.6 Bn Hydraulic Fracturing Industry 2025-2030 Exhibit

EX1027 - USWS PTAB History Exhibit

EX1036 - Overview of the IEEE Color Books Exhibit

Patent Owner’s Updated Mandatory Notices NOTICE

Ex. 2001 - REVISED Declaration Of Richard H. Quarles Exhibit

Ex. 3001 Exhibit

Patent Owner’s Discretionary Denial Brief RESPONSE

Ex. 2004- Case No. 2:25-cv-00522-JRG-RSP – Scheduling Order Exhibit

Ex. 2002- Civil Action No. 2:24-cv-00884-JRG-RSP – Defendants’ Amended Answer and Counterclaims Exhibit

Ex. 2006 - Federal Court Management Statistics-Profiles Exhibit

Ex. 2008 - Case No. 4:24-CV-00839-KPE – Liberty Motion to Stay Exhibit

Ex. 2009 - Case No. 2:25-cv-00522-JRG-RSP – Joint (Agreed) Motion for Entry of Docket Control Number Exhibit

Ex. 2007 - USPTO Rescission of Memorandum Addressing Discretionary Denial Procedures Exhibit

Ex. 2005 - Case No. 2:25-cv-00522-JRG-RSP – Liberty’s Invalidity Contentions Exhibit

Ex. 2003 - Case No. 2:24-cv-00884-JRG-RSP – Order to Sever Counterclaims Exhibit

PO Notice Of Intent To Designate Richard H. Quarles As A Provisionally Recognized PTAB Attorney Eligible For Automatic PHV Admission As Back Up Counsel NOTICE

Ex. 2001 - Declaration Of Richard H. Quarles ISO PO PHV Admission (‘801) Exhibit

EX1024 - IPR2025-01424 October 27, 2025 Stipulation Exhibit

Petitioners' Updated Exhibit List NOTICE

Petitioners' Updated Mandatory Notices NOTICE

Patent Owner’s Mandatory Notices NOTICE

Patent Owner's Power of Attorney ('801) NOTICE

Notice: Notice filing date accorded NOTICE

1019 - Horikoshi - US20110241590A1 Exhibit

1014 - Roe - PRACTICES AND PROCEDURES OF INDUSTRIAL ELECTRICAL DESIGN Exhibit

1021 - Solar Turbines Turbomachinery Systems For Oil and Gas Application Exhibit

1009 - US20120255734A1 Coli Exhibit

1017 - US1743771 Hall Exhibit

1010 - Kumar-2005-Harmonics In Offshore Electrical Power Systems Exhibit

1006 - 801 Patent Claim Listing Exhibit

1011 - GE Power TM2500 Mobile Power Plant Webpage. Exhibit

Petition for Inter Partes Review of U.S. Patent No. 11,211,801 PETITION

1020 - NFPA NEC 70 Exhibit

1023 - Solar Turbines Product and Solutions - Power Generation Webpage Exhibit

Petitioners' Power of Attorney NOTICE

1016 - IEEE100 Standards Dictionary Exhibit

1008 - Solar Turbines Exhibit

1015 - Camara-EE Reference Exhibit

1001 - US11211801 Exhibit

1012 - Declaration of Mina Ching Exhibit

1002 - 801 File History Exhibit

1013 - Declaration of Sylvia Hall-Ellis, PhD Exhibit

1003 - Declaration of Robert Durham Exhibit

1004 - WO_2018071738_A1 (Reckels) Exhibit

1018 - Fink pt2 Exhibit

1007 - US20170030178A1 Oehring178 Exhibit

1005 - IEEE Red Book Exhibit

1018 - Fink pt1 Exhibit

1022 - Solar Turbines Product and Solutions - Oil and Gas Webpage Exhibit