Litigation

ZHUHAI COSMX BATTERY CO., LTD. v. Ningde Amperex Technology Limited

Pending - Instituted

IPR2025-00389

Auto-generating section 1 of 4: Case overview & background…

Each section takes ~30-60s with web-search grounding. Keep this tab open — sections will fill in below as they complete.

Court: Patent Trial and Appeal Board (PTAB)
Filed: 2025-04-01

Patents at issue (1)

11923498 PTAB settled/terminated

Plaintiffs (1)

π ZHUHAI COSMX BATTERY CO., LTD.

Defendants (1)

Δ Ningde Amperex Technology Limited

Summary

An Inter Partes Review (IPR) was filed by ZHUHAI COSMX BATTERY CO., LTD. against Ningde Amperex Technology Limited regarding patent 11923498, which has been instituted.

Case overview & background

Plain-language overview of the case: parties, accused product, patents at issue, and why the suit matters.

Not yet generated. Click Generate to run the LLM with web-search grounding (~30-60s).

Key legal developments & outcome

Major rulings, motions, claim construction, settlements, and the present posture or final disposition.

Not yet generated. Click Generate to run the LLM with web-search grounding (~30-60s).

Plaintiff representatives

Counsel of record for the plaintiff(s): attorneys, firms, and roles (lead counsel, of counsel, local counsel).

Not yet generated. Click Generate to run the LLM with web-search grounding (~30-60s).

Defendant representatives

Counsel of record for the defendant(s): attorneys, firms, and roles (lead counsel, of counsel, local counsel).

Not yet generated. Click Generate to run the LLM with web-search grounding (~30-60s).

Record id: 11923498-ipr2025-00389 · edit in Admin

Further reading

Cost of Inter Partes Review (IPR): a 2026 breakdown
An IPR ends most cases when the prior art is real. The all-in cost is roughly a tenth of full litigation — but only if you stage it right.
Finding prior art with free tools: Google Patents, Lens, Espacenet, and more
A serious paid prior-art search costs $5,000 to $20,000. The first 80% of what you'd find is sitting behind free tools — if you know how to drive them.
Patent law glossary
Sixty-plus patent-law terms, defined in one or two sentences each, with a link to the deeper article. The universal landing pad when an article uses a term you don't know.
Obviousness under § 103
Most patented inventions are combinations of existing ideas. The modern KSR standard makes those combinations easier to attack than they used to be.
TC Heartland LLC v. Kraft Foods Group Brands LLC (2017)
Pre-TC Heartland, plaintiffs sued in plaintiff-friendly E.D. Tex. by default. Post-TC Heartland, venue is a real defense — and Delaware is where most U.S. patent cases land.

All resources →