This is what the DJ complaint alleges: Plaintiff sells LIMEADE BLAST batteries and battery chargers. Defendant offers LIMEADE corporate wellness services to unwell corporations. Defendant is moving into delivering software apps relating to self-monitoring on smartphones. Smartphones that use batteries. The kind of batteries that cause airplane fires (see para. 20 of the complaint). So Defendant sent a C&D.
Note: This is The Trademark Blog, not the Onion or Daily Currant. I really downloaded this complaint from Pacer and para. 20 really says what it says (unfortunately exhibit 10 of the complaint was not on Pacer so I can’t confirm that para 20 is a correct quote of the C&D).