On 31st March 2023, the Chinese company Zhuhai CosMX Battery Co., Ltd., a.k.a. Zhuhai, lodged a petition for inter partes review (IPR) of certain claims concerning U.S. Patent No. 11,329,352, which is also referred to as the ‘352 Patent. The ‘352 Patent is currently owned by Ningde Amperex Technology Ltd., a.k.a. Amperex. This incident marks yet another noteworthy development in the field of patent law litigation. Notably, the ‘352 Patent pertains to the structure of secondary batteries, a crucial field in today’s tech-heavy global landscape.
This patent review request forms an integral part of an ongoing litigation case currently being heard by the Eastern District of Texas. The court case involves both Zhuhai and Amperex. Zhuhai’s patent review petition has put forth arguments that a number of claims under the ‘352 Patent are evidently obvious, with their basis anchored on various combinations.
One implications of the IPR process is that granted patents can be re-evaluated to ensure that those that should not have been granted are invalidated, and reduction of litigation costs by potentially settling patent disputes more efficiently than court systems. However, its impact on the litigation strategies and patent portfolios of global corporations and law firms cannot be underestimated, affording a clear demonstration of the complexities inherent in intellectual property law.
For more detailed information on the case, you can read the full coverage by clicking here.