A plaintiffs firm suing over injuries caused by exploding e-cigarettes has asked a California judge to coordinate the cases in order to decide a jurisdictional challenge raised by LG, the alleged manufacturer of the lithium ion batteries at issue.

Meanwhile, LG Chem Ltd., the chemical unit of South Korea’s LG Corp., has insisted it doesn’t even make batteries for e-cigarettes. It has filed motions to quash service of summons and the complaints in at least seven cases, all filed by Bentley & More in Newport Beach, California.