Infringement action filed 6 Sep 2024 in the United States District Court for the Eastern District of Texas and closed 23 Jun 2026, with 6 patents asserted. Recorded basis of termination: dismissed with prejudice.
An electrode includes a current collector; a first active material layer including a first active material; and a second active material layer including a second active material; wherein the first active material layer is arranged between the current collector and the second active material layer. The first active material layer is formed on a surface of the current collector, and a particle size of 90% accumulative volume of the first active material is less than 40 μm. The active material layer is used to ensure that the electrochemical device and the electronic device do not generate a short circuit when pressed by an external force, thereby ensuring the mechanical safety performance of the electrochemical device and the electronic device.
An electrolyte including a dinitrile compound, a trinitrile compound, and propyl propionate. Based on the total weight of the electrolyte, the weight percentage of the dinitrile compound is X, the weight percentage of the trinitrile compound is Y, and the weight percentage of the propyl propionate is Z, wherein, about 2.2 wt %≤(X+Y)≤about 8 wt %, about 0.1≤(X/Y)≤about 2.3, about 5 wt %≤Z≤about 50 wt %, 1 wt %
The docket lists 6 asserted patents. Full bibliographic detail, drawings and prosecution history for the remaining 4 asserted patents are one query away in Eureka.
Abigail Clark · Brad Estes · Chunmeng Yang · Gregory Blake Thompson · Lance Lin Yang · Michael Daniel Powell · Quincy Lu · Razmig Hagop Messerian · Sable Bahleda · Yunzhi Lin
Andrew Thompson (Tom) Gorham · Blaney Harper · Evan Peter Tassis · Gasper Joseph LaRosa II · Harry Lee Gillam Jr. · John Charles Evans · Joseph Farley · Joseph Franklin Cleveland Jr. · Melissa Richards Smith · Michael Christopher Hendershot · Robert Breetz · T. Kaitlin Crowder
Firm
Brackett & Ellis PC (Fort Worth), Gillam & Smith, LLP, Jones Day, Jones Day (Cleveland), Jones Day (Palo Alto), Jones Day (Washington)
Source: case record + Patsnap company data. Attorney names appear as recorded in the docket.Compare both portfolios
Outcome
Basis of termination
From the record · verbatim
"Before the Court is the Stipulation of Dismissal Pursuant to Rule 41(a)(1) (the “Stipulation”) filed by Plaintiff Ningde Amperex Technology Limited (“Plaintiff”) and Defendant Zhuhai CosMX Battery Co., Ltd. (“Defendant”) (collectively, the “Parties”). (Dkt. No. 290.) In the Stipulation, the Parties jointly move to dismiss all claims in this action with prejudice pursuant to Rule 41 of the Federal Rules of Civil Procedure. (Id. at 1.) Having considered the Stipulation, the Court ACCEPTS AND ACKNOWLEDGES that all claims in the above-captioned case are DISMISSED WITH PREJUDICE. Each party shall bear its own costs and fees. All pending requests for relief in the above-captioned case between Plaintiff and Defendant not explicitly granted herein are DENIED AS MOOT. The Clerk of Court is directed to CLOSE the above-captioned case as no parties or claims remain."
Case 2:24-cv-00728 · E.D. Tex. · closed 23 June 2026
Source: case record, verbatim. The quoted paragraph is the basis-of-termination text as filed.
Related cases
Three questions this record usually leads to. Each one runs against the full litigation and patent corpus, and cites what it finds.
2:24-cv-00728 is a patent infringement action brought by Ningde Amperex Technology Limited against Zhuhai CosMX Battery Co., Ltd., filed on 6 Sep 2024 in the United States District Court for the Eastern District of Texas. The case closed on 23 June 2026.
Which patents were asserted in 2:24-cv-00728?
US12015118B2 (“Electrode electrochemical device and electronic device”), assigned to NINGDE AMPEREX TECHNOLOGY LIMITED, currently active; US11769910B2 (“Electrolyte and electrochemical device”), assigned to NINGDE AMPEREX TECHNOLOGY LIMITED, currently active; US11799131B2 (“Electrolyte and electrochemical device”), assigned to NINGDE AMPEREX TECHNOLOGY LIMITED; US11923498B2 (“Lithium-ion battery having desirable safety performance”), assigned to NINGDE AMPEREX TECHNOLOGY LIMITED; US10964927B2 (“Separator and electrochemical device”), assigned to NINGDE AMPEREX TECHNOLOGY LIMITED; US11575148B2 (“Porous film and lithium-ion battery”), assigned to NINGDE AMPEREX TECHNOLOGY LIMITED. The record also lists Lithium-ion battery products and/or related services.
How was case 2:24-cv-00728 terminated?
The recorded basis of termination is dismissed with prejudice. The termination text reads: "Before the Court is the Stipulation of Dismissal Pursuant to Rule 41(a)(1) (the “Stipulation”) filed by Plaintiff Ningde Amperex Technology Limited (“Plaintiff”) and Defendant Zhuhai CosMX Battery Co., Ltd. (“Defendant”) (collectively, the “Parties”). (Dkt. No. 290.) In the Stipulation, the Parties jointly move to dismiss all claims in this action with prejudice pursuant to Rule 41 of the Federal Rules of Civil Procedure. (Id. at 1.) Having considered the Stipulation, the Court ACCEPTS AND ACKNOWLEDGES that all claims in the above-captioned case are DISMISSED WITH PREJUDICE. Each party shall
What does dismissal with prejudice mean?
A dismissal with prejudice permanently ends the claims that were filed, so the same claims cannot be brought again against that defendant. It is the usual form when the parties have settled.
How long did case 2:24-cv-00728 take?
655 calendar days, from filing on 6 Sep 2024 to closure on 23 June 2026.
Who were the attorneys and the judge in 2:24-cv-00728?
Chief Judge Rodney Gilstrap presided. Abigail Clark, Brad Estes, Chunmeng Yang, Gregory Blake Thompson, Lance Lin Yang, Michael Daniel Powell, Quincy Lu, Razmig Hagop Messerian, Sable Bahleda and Yunzhi Lin are recorded as counsel for plaintiff Ningde Amperex Technology. Andrew Thompson (Tom) Gorham, Blaney Harper, Evan Peter Tassis, Gasper Joseph LaRosa II, Harry Lee Gillam Jr., John Charles Evans, Joseph Farley, Joseph Franklin Cleveland Jr., Melissa Richards Smith, Michael Christopher Hendershot, Robert Breetz and T. Kaitlin Crowder appear for defendant Zhuhai CosMX Battery.
Answers reproduce fields from the case record for 2:24-cv-00728 and do not constitute legal advice.Ask your own question
Disclaimer. This page reproduces publicly available court docket data for case 2:24-cv-00728 and is provided for general information and reference only. It is not legal advice and must not be relied upon as such.
Docket data has limits. Records are drawn from a snapshot and may lag the live docket. Sealed filings, amended complaints, counterclaims and post-closure motions may not be reflected. Party names, attorney names and firm affiliations are reproduced as recorded and may contain omissions. Where a field is absent from the record, this page marks it as not recorded rather than inferring a value.
No characterisation of the parties or the outcome. This page reports what the record contains. Nothing here should be read as an assertion that any party infringed, that any patent is valid or invalid, that any settlement occurred, or that any party prevailed.
No FTO or validity opinion. Nothing on this page constitutes a freedom-to-operate, novelty, validity or infringement opinion. Any decision touching a live patent dispute should be verified independently and reviewed with qualified patent counsel.
