Obtained Settlement for Celgard in Patent Litigation against Targray, a Competitor in the Battery Separator Market

September 2019

Celgard, LLC v. Targray Technology International Inc., Case No. 5:19-cv-02401-VKD (N.D. Cal.)

Robins Kaplan represented Celgard, LLC in a cross-border patent litigation matter against Targray Technology International. Celgard is a global leader in the development and production of specialty microporous membranes, including separators used in lithium-ion batteries for consumer electronic devices and electric vehicles. Targray competes with Celgard in the battery separator market. 

According to the complaint, Targray infringed upon two of Celgard’s patents. The complaint alleged that Targray’s ceramic coated and uncoated lithium-ion battery separators infringed both of these patents.

The complaint, filed in the Northern District of California, sought compensation for Targray’s past and present infringement. The matter settled on confidential terms.
Past results are reported to provide the reader with an indication of the type of litigation we practice. They do not and should not be construed to create an expectation of result in any other case, as all cases are dependent upon their own unique fact situation and applicable law.

William E. Manske


Chair, Recruiting/Hiring Committee

Li Zhu


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