Celgard Files for Quick Injunction in Lawsuit Against Senior for Patent Infringement and Trade Secret Misappropriation

Celgard filed suit in September against Senior who sells separators globally that they make in Shenzhen, China. Celgard's Complaint alleges Senior has infringed Celgard's U.S. '520 and '867 Patents on ceramic coated and polypropylene separators. The suit also seeks a permanent injunction preventing Senior from selling the infringing separators and from using Celgard's trade secrets and confidential information, and seeks compensation for damages. See Release. Celgard filed suit in September...

Celgard filed suit in September against Senior who sells separators globally that they make in Shenzhen, China. Celgard's Complaint alleges Senior has infringed Celgard's U.S. '520 and '867 Patents on ceramic coated and polypropylene separators. The suit also seeks a permanent injunction preventing Senior from selling the infringing separators and from using Celgard's trade secrets and confidential information, and seeks compensation for damages. See Release.

In August, Celgard successfully settled a patent infringement lawsuit against Targray International (Targray) for infringing Celgard's '520 and '867 Patents. See Release.

In June, Celgard also successfully settled two suits against MTI Corporation (MTI) for selling separators that infringe Celgard's '586 patent and for selling counterfeit separators with the Celgard® registered trademark. See Release.

The successful outcome of the Targray and MTI cases further solidifies the integrity of Celgard's intellectual property (IP) regarding coated and uncoated separators for lithium-ion batteries. Celgard will continue to prevent the unfair exploitation of its technology and IP to safeguard its assets and customers.

About Celgard and Polypore
Celgard specializes in coated and uncoated dry-process microporous membranes used as separators that are a major component of lithium-ion batteries. Celgard's battery separator technology is important to the performance of lithium-ion batteries for electric drive vehicles, energy storage systems and other applications.

Celgard, LLC is a wholly-owned subsidiary of Polypore International, LP, an Asahi Kasei Company.

Polypore is a global company with facilities in nine countries specializing in microporous membranes used in electric and nonelectric vehicles, energy storage systems and specialty applications. Visit www.celgard.com and www.polypore.com.

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