Zhuhai CosMX Battery Co., Ltd. vs. Ningde Amperex Technology Ltd.

Explore the PTAB proceeding IPR2025-00431 filed by Zhuhai CosMX Battery Co., Ltd. on 2025-01-28. This includes filing dates, application numbers, tech centers, patent numbers, and current case status.

Proceeding Overview

Proceeding Number

IPR2025-00431

Filing Date

2025-01-28

Accorded Filing Date

2025-01-28

Institution Decision Date

2025-08-19

Last Modified Date

2026-06-26

Proceeding Type

IPR

Termination Date

2026-06-26

Trial Status

Terminated-Settled

Parties & Counsel

Petitioner

Zhuhai CosMX Battery Co., Ltd.

Represented By

Stein, Jameset al

Patent Owner / Respondent

Ningde Amperex Technology Ltd.

Represented By

Douglas, Christopheret 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 17885920

Respondent Patent Number 11799131

External Links

Espacenet

Google Patents

Respondent Inventor Kefei WANG et al

Respondent Tech Center TC 1700 - Chemical & Materials Engineering

Address and Attorney/Agent Information

11 Registered Practitioners

Power of Attorney & Correspondence

Firm / Entity Name MAIER & MAIER, PLLC

Customer Number 62008

Address 345 SOUTH PATRICK STREET, ALEXANDRIA, VA, 22314, UNITED STATES

Attorney / Agent Information

Reg #	Name	Phone
34423	Surinder Sachar	703-413-3000
40294	Michael Casey	571-278-6379
51986	Timothy Maier	703-740-8322
53255	Christopher Maier	703-740-8322
58543	Robert Madsen	703-740-8322
59241	Patrick Wamsley	703-519-9801
68584	Max Kaganov	305-807-4358
70435	Timothy Harbeck	703-740-8332
74285	Christopher Ohslund	703-740-8332
80717	Ryan Thompson	703-740-8322
L1386	Lin Chen	703-740-8322

Proceeding Documents

150

Termination Decision: Post-DI Settlement TERMINATE

2026-06-26 FILING PARTY: BOARD

Download

1101

EX1101 - Stipulation of Dismissal Exhibit

2026-06-15 FILING PARTY: PETITIONER

Download

Joint Request to Keep Settlement Agreement Confidential OTHER

2026-06-15 FILING PARTY: PETITIONER

Download

Joint Motion to Terminate MOTION

2026-06-15 FILING PARTY: PETITIONER

Download

Other: Hearing transcript OTHER

2026-06-04 FILING PARTY: BOARD

Download

Zhuhai CosMX Battery Co., Ltd. vs. Ningde Amperex Technology Ltd.

Proceeding Overview

Parties & Counsel

Petitioner

Zhuhai CosMX Battery Co., Ltd.

Represented By

Patent Owner / Respondent

Ningde Amperex Technology Ltd.

Represented By

Tribunal & Venue

Patent Information

Address and Attorney/Agent Information

Power of Attorney & Correspondence

Attorney / Agent Information

Proceeding Documents

Termination Decision: Post-DI Settlement TERMINATE

EX1101 - Stipulation of Dismissal Exhibit

Joint Request to Keep Settlement Agreement Confidential OTHER

Joint Motion to Terminate MOTION

Other: Hearing transcript OTHER

Petitioner's Demonstratives for Oral Hearing OTHER

Ningde Amperex Tech. Exhibit No. 2053 Exhibit

Patent Owner's Exhibit List NOTICE

Order: Setting Oral Argument 37 C.F.R. sec. 42.70 ORDER

Patent Owner's Sur-Reply OTHER

Ningde Amperex Tech. Exhibit No. 2052- Deposition Transcript of Brett Lucht, Ph.D., dated April 2, 2026 Exhibit

Patent Owner's Request for Oral Argument OTHER

Petitioner's Request for Oral Argument OTHER

Second Notice of Stipulation Regarding Scheduling Order NOTICE

Patent Owner's Second Notice of Deposition of Brett Lucht, Ph.D. NOTICE

Ningde Amperex Tech. Exhibit No. 2051-Claim Construction Order ED TX Exhibit

Patent Owner's Updated Exhibit List NOTICE

Patent Owner's Objections to Evidence Submitted with Petitioner's Reply OTHER

Petitioner's Updated Mandatory Notices under 37 CFR 42.8(a)(3) NOTICE

Petitioner's Updated Mandatory Notices under 37 CFR 42.8(a)(3) NOTICE

EX1046_U.S. Patent Application Publication No. 2013/0323556 to Jeong et al Exhibit

Petitioner's Reply to Patent Owner's Response to Petition for Inter Partes Review of U.S. Patent No. 11,799,131 REPLYTOOPP

EX1043_Wheeler Group Research Webpage Exhibit

EX1045_Deposition Transcript of Dean R Wheeler, Ph.D., dated January 28, 2026 Exhibit

EX1048_U.S. Patent No. 11,769,910 Exhibit

EX1047_International Patent Application Publication No. WO2018/088743 A1 to Choi et al. and Certified English Translation Exhibit

EX1049_Claim Construction Order, Ningde Amperex Tech. Ltd. v. Zhuhai CosMX Battery Co., No. 2:24-cv-00728-JRG (E.D. Tex. Feb. 17, 2026), ECF 171 Exhibit

EX1044_Supplemental Declaration of Brett Lucht, Ph.D., dated February 18, 2026 Exhibit

Patent Owner's Updated Mandatory Notices NOTICE

Petitioner's Notice of Deposition of Dean R. Wheeler, Ph.D. NOTICE

Notice of Stipulation Regarding Scheduling Order NOTICE

Ningde Amperex Tech. Exhibit No. 2046-Tan, et al., Review on Low-Temperature Electrolytes Exhibit

Ningde Amperex Tech. Exhibit No. 2049-Academic Press Dictionary of Science and Technology Exhibit

Ningde Amperex Tech. Exhibit No. 2045-Michan, et al., Fluoroethylene Carbonate and Vinylene Carbonate Reduction Exhibit

Ningde Amperex Tech. Exhibit No. 2048-Xing et al., Deciphering the Ethylene Carbonate-Propylene Carbonate Mystery Exhibit

Ningde Amperex Tech. Exhibit No. 2043-Declaration of Dr. Brett Lucht, dated September 15, 2023, IPR2023-01016 Exhibit

Patent Owner's Response RESPONSE

Ningde Amperex Tech. Exhibit No. 2050-Deposition Transcript of Brett Lucht, Ph.D., dated October 22, 2025 Exhibit

Ningde Amperex Tech. Exhibit No. 2042-Deposition Transcript of Brett Lucht, Ph.D., dated September 13, 2022, IPR2021-01440 Exhibit

Ningde Amperex Tech. Exhibit No. 2047-Supplemental Declaration of Dean R. Wheeler, Ph.D. Exhibit

Order Denying Director Review of Institution Decision REHEARING

Ex. 3101 Request Authorized file supplement - Denied Exhibit

Petitioner's Updated Power of Attorney NOTICE

Petitioner's Updated Mandatory Notices Under 37 CFR § 42.8(a)(3) NOTICE

Patent Owner's Notice of Deposition of Brett Lucht, Ph.D. NOTICE

Patent Owner's Updated Mandatory Notices NOTICE

General Order: Related Matters Updates ORDER

Authorized Response to Director Review Request OTHER

Patent Owner's Objections to Evidence Submitted Prior to Institution OTHER

Exhibit 3100 Exhibit

Patent Owner's Request of Director Review REQUEST

Patent Owner’s Notice of Intent to Designate Provisionally Recognized PTAB Attorney Brady Cox NOTICE

Ningde Amperex Tech. Exhibit No. 2041-Declaration of Brady Cox Exhibit

Petitioner's Objections to Evidence Submitted with Patent Owner's Preliminary Response OTHER

Institution Decision: Granting Institution of Inter Partes Review 35 U.S.C. sec. 314 DECISION

Order: SCHEDULING ORDER ORDER

Director Discretionary Decision: Refer RESPONSE

EX1032_Order, ECF 86 Exhibit

Ningde Amperex Tech. Exhibit No. 2023-Interfacial Processes and Influence of Composite Exhibit

EX1034_Order, ECF 163 Exhibit

Ningde Amperex Tech. Exhibit No. 2040-Ethylene Carbonate – Mitsubishi Exhibit

Ningde Amperex Tech. Exhibit No. 2035- Binder-free LiCoO2 Exhibit

Ningde Amperex Tech. Exhibit No. 2030-Effects of Cycling Exhibit

Ningde Amperex Tech. Exhibit No. 2021-204442NDEEP_Annex W3 Exhibit

EX1029 _Partial Stay Order, ECF 402 Exhibit